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1 //===-- X86FloatingPoint.cpp - Floating point Reg -> Stack converter ------===//
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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2 //
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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3 // The LLVM Compiler Infrastructure
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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4 //
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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5 // This file is distributed under the University of Illinois Open Source
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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6 // License. See LICENSE.TXT for details.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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7 //
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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8 //===----------------------------------------------------------------------===//
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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9 //
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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10 // This file defines the pass which converts floating point instructions from
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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11 // pseudo registers into register stack instructions. This pass uses live
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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12 // variable information to indicate where the FPn registers are used and their
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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13 // lifetimes.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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14 //
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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15 // The x87 hardware tracks liveness of the stack registers, so it is necessary
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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16 // to implement exact liveness tracking between basic blocks. The CFG edges are
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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17 // partitioned into bundles where the same FP registers must be live in
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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18 // identical stack positions. Instructions are inserted at the end of each basic
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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19 // block to rearrange the live registers to match the outgoing bundle.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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20 //
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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21 // This approach avoids splitting critical edges at the potential cost of more
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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22 // live register shuffling instructions when critical edges are present.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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23 //
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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24 //===----------------------------------------------------------------------===//
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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25
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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26 #include "X86.h"
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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27 #include "X86InstrInfo.h"
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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28 #include "llvm/ADT/DepthFirstIterator.h"
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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29 #include "llvm/ADT/STLExtras.h"
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30 #include "llvm/ADT/SmallPtrSet.h"
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77
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31 #include "llvm/ADT/SmallSet.h"
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32 #include "llvm/ADT/SmallVector.h"
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33 #include "llvm/ADT/Statistic.h"
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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34 #include "llvm/CodeGen/EdgeBundles.h"
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95
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35 #include "llvm/CodeGen/LivePhysRegs.h"
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36 #include "llvm/CodeGen/MachineFunctionPass.h"
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37 #include "llvm/CodeGen/MachineInstrBuilder.h"
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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38 #include "llvm/CodeGen/MachineRegisterInfo.h"
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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39 #include "llvm/CodeGen/Passes.h"
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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40 #include "llvm/IR/InlineAsm.h"
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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41 #include "llvm/Support/Debug.h"
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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42 #include "llvm/Support/ErrorHandling.h"
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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43 #include "llvm/Support/raw_ostream.h"
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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44 #include "llvm/Target/TargetInstrInfo.h"
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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45 #include "llvm/Target/TargetMachine.h"
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77
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46 #include "llvm/Target/TargetSubtargetInfo.h"
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47 #include <algorithm>
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83
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48 #include <bitset>
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49 using namespace llvm;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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50
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77
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51 #define DEBUG_TYPE "x86-codegen"
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|
52
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53 STATISTIC(NumFXCH, "Number of fxch instructions inserted");
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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54 STATISTIC(NumFP , "Number of floating point instructions");
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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55
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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56 namespace {
|
77
|
57 const unsigned ScratchFPReg = 7;
|
|
58
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59 struct FPS : public MachineFunctionPass {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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60 static char ID;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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61 FPS() : MachineFunctionPass(ID) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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62 initializeEdgeBundlesPass(*PassRegistry::getPassRegistry());
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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63 // This is really only to keep valgrind quiet.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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64 // The logic in isLive() is too much for it.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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65 memset(Stack, 0, sizeof(Stack));
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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66 memset(RegMap, 0, sizeof(RegMap));
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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67 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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68
|
77
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69 void getAnalysisUsage(AnalysisUsage &AU) const override {
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70 AU.setPreservesCFG();
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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71 AU.addRequired<EdgeBundles>();
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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72 AU.addPreservedID(MachineLoopInfoID);
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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73 AU.addPreservedID(MachineDominatorsID);
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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74 MachineFunctionPass::getAnalysisUsage(AU);
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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75 }
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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76
|
77
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77 bool runOnMachineFunction(MachineFunction &MF) override;
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78
|
77
|
79 const char *getPassName() const override { return "X86 FP Stackifier"; }
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80
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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81 private:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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82 const TargetInstrInfo *TII; // Machine instruction info.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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83
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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84 // Two CFG edges are related if they leave the same block, or enter the same
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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85 // block. The transitive closure of an edge under this relation is a
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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86 // LiveBundle. It represents a set of CFG edges where the live FP stack
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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87 // registers must be allocated identically in the x87 stack.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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88 //
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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89 // A LiveBundle is usually all the edges leaving a block, or all the edges
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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90 // entering a block, but it can contain more edges if critical edges are
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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91 // present.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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92 //
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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93 // The set of live FP registers in a LiveBundle is calculated by bundleCFG,
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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|
94 // but the exact mapping of FP registers to stack slots is fixed later.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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|
95 struct LiveBundle {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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|
96 // Bit mask of live FP registers. Bit 0 = FP0, bit 1 = FP1, &c.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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|
97 unsigned Mask;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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|
98
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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99 // Number of pre-assigned live registers in FixStack. This is 0 when the
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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|
100 // stack order has not yet been fixed.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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|
101 unsigned FixCount;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
102
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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|
103 // Assigned stack order for live-in registers.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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|
104 // FixStack[i] == getStackEntry(i) for all i < FixCount.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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105 unsigned char FixStack[8];
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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|
106
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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|
107 LiveBundle() : Mask(0), FixCount(0) {}
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
108
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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|
109 // Have the live registers been assigned a stack order yet?
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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|
110 bool isFixed() const { return !Mask || FixCount; }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
111 };
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
112
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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|
113 // Numbered LiveBundle structs. LiveBundles[0] is used for all CFG edges
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
114 // with no live FP registers.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
115 SmallVector<LiveBundle, 8> LiveBundles;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
116
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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|
117 // The edge bundle analysis provides indices into the LiveBundles vector.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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|
118 EdgeBundles *Bundles;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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diff
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|
119
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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120 // Return a bitmask of FP registers in block's live-in list.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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|
121 static unsigned calcLiveInMask(MachineBasicBlock *MBB) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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|
122 unsigned Mask = 0;
|
95
|
123 for (const auto &LI : MBB->liveins()) {
|
|
124 if (LI.PhysReg < X86::FP0 || LI.PhysReg > X86::FP6)
|
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125 continue;
|
95
|
126 Mask |= 1 << (LI.PhysReg - X86::FP0);
|
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|
127 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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|
128 return Mask;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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|
129 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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|
130
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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131 // Partition all the CFG edges into LiveBundles.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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|
132 void bundleCFG(MachineFunction &MF);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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diff
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|
133
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
134 MachineBasicBlock *MBB; // Current basic block
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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|
135
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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136 // The hardware keeps track of how many FP registers are live, so we have
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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|
137 // to model that exactly. Usually, each live register corresponds to an
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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diff
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|
138 // FP<n> register, but when dealing with calls, returns, and inline
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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diff
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|
139 // assembly, it is sometimes necessary to have live scratch registers.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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|
140 unsigned Stack[8]; // FP<n> Registers in each stack slot...
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
141 unsigned StackTop; // The current top of the FP stack.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
142
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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|
143 enum {
|
77
|
144 NumFPRegs = 8 // Including scratch pseudo-registers.
|
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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diff
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|
145 };
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
146
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
147 // For each live FP<n> register, point to its Stack[] entry.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
148 // The first entries correspond to FP0-FP6, the rest are scratch registers
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
149 // used when we need slightly different live registers than what the
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
150 // register allocator thinks.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
151 unsigned RegMap[NumFPRegs];
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
152
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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|
153 // Set up our stack model to match the incoming registers to MBB.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
154 void setupBlockStack();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
155
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
156 // Shuffle live registers to match the expectations of successor blocks.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
157 void finishBlockStack();
|
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|
158
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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|
159 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
160 void dumpStack() const {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
161 dbgs() << "Stack contents:";
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
162 for (unsigned i = 0; i != StackTop; ++i) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
163 dbgs() << " FP" << Stack[i];
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
164 assert(RegMap[Stack[i]] == i && "Stack[] doesn't match RegMap[]!");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
165 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
166 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
167 #endif
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
168
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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169 /// getSlot - Return the stack slot number a particular register number is
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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|
170 /// in.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
171 unsigned getSlot(unsigned RegNo) const {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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|
172 assert(RegNo < NumFPRegs && "Regno out of range!");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
173 return RegMap[RegNo];
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
174 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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|
175
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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176 /// isLive - Is RegNo currently live in the stack?
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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177 bool isLive(unsigned RegNo) const {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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|
178 unsigned Slot = getSlot(RegNo);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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179 return Slot < StackTop && Stack[Slot] == RegNo;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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180 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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|
181
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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182 /// getStackEntry - Return the X86::FP<n> register in register ST(i).
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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183 unsigned getStackEntry(unsigned STi) const {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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184 if (STi >= StackTop)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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185 report_fatal_error("Access past stack top!");
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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186 return Stack[StackTop-1-STi];
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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187 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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188
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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189 /// getSTReg - Return the X86::ST(i) register which contains the specified
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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190 /// FP<RegNo> register.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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|
191 unsigned getSTReg(unsigned RegNo) const {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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192 return StackTop - 1 - getSlot(RegNo) + X86::ST0;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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193 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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194
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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195 // pushReg - Push the specified FP<n> register onto the stack.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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196 void pushReg(unsigned Reg) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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|
197 assert(Reg < NumFPRegs && "Register number out of range!");
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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|
198 if (StackTop >= 8)
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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199 report_fatal_error("Stack overflow!");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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|
200 Stack[StackTop] = Reg;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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|
201 RegMap[Reg] = StackTop++;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
202 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
203
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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|
204 bool isAtTop(unsigned RegNo) const { return getSlot(RegNo) == StackTop-1; }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
205 void moveToTop(unsigned RegNo, MachineBasicBlock::iterator I) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
206 DebugLoc dl = I == MBB->end() ? DebugLoc() : I->getDebugLoc();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
207 if (isAtTop(RegNo)) return;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
208
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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|
209 unsigned STReg = getSTReg(RegNo);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
210 unsigned RegOnTop = getStackEntry(0);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
211
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
212 // Swap the slots the regs are in.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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|
213 std::swap(RegMap[RegNo], RegMap[RegOnTop]);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
214
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
215 // Swap stack slot contents.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
216 if (RegMap[RegOnTop] >= StackTop)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
217 report_fatal_error("Access past stack top!");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
218 std::swap(Stack[RegMap[RegOnTop]], Stack[StackTop-1]);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
219
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
220 // Emit an fxch to update the runtime processors version of the state.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
221 BuildMI(*MBB, I, dl, TII->get(X86::XCH_F)).addReg(STReg);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
222 ++NumFXCH;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
223 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
224
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
225 void duplicateToTop(unsigned RegNo, unsigned AsReg, MachineInstr *I) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
226 DebugLoc dl = I == MBB->end() ? DebugLoc() : I->getDebugLoc();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
227 unsigned STReg = getSTReg(RegNo);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
228 pushReg(AsReg); // New register on top of stack
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
229
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
230 BuildMI(*MBB, I, dl, TII->get(X86::LD_Frr)).addReg(STReg);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
231 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
232
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
233 /// popStackAfter - Pop the current value off of the top of the FP stack
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
234 /// after the specified instruction.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
235 void popStackAfter(MachineBasicBlock::iterator &I);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
236
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
237 /// freeStackSlotAfter - Free the specified register from the register
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
238 /// stack, so that it is no longer in a register. If the register is
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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|
239 /// currently at the top of the stack, we just pop the current instruction,
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
240 /// otherwise we store the current top-of-stack into the specified slot,
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
241 /// then pop the top of stack.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
242 void freeStackSlotAfter(MachineBasicBlock::iterator &I, unsigned Reg);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
243
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
244 /// freeStackSlotBefore - Just the pop, no folding. Return the inserted
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
245 /// instruction.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
246 MachineBasicBlock::iterator
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
247 freeStackSlotBefore(MachineBasicBlock::iterator I, unsigned FPRegNo);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
248
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
249 /// Adjust the live registers to be the set in Mask.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
250 void adjustLiveRegs(unsigned Mask, MachineBasicBlock::iterator I);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
251
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
252 /// Shuffle the top FixCount stack entries such that FP reg FixStack[0] is
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
253 /// st(0), FP reg FixStack[1] is st(1) etc.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
254 void shuffleStackTop(const unsigned char *FixStack, unsigned FixCount,
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
255 MachineBasicBlock::iterator I);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
256
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
257 bool processBasicBlock(MachineFunction &MF, MachineBasicBlock &MBB);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
258
|
77
|
259 void handleCall(MachineBasicBlock::iterator &I);
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
260 void handleZeroArgFP(MachineBasicBlock::iterator &I);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
261 void handleOneArgFP(MachineBasicBlock::iterator &I);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
262 void handleOneArgFPRW(MachineBasicBlock::iterator &I);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
263 void handleTwoArgFP(MachineBasicBlock::iterator &I);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
264 void handleCompareFP(MachineBasicBlock::iterator &I);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
265 void handleCondMovFP(MachineBasicBlock::iterator &I);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
266 void handleSpecialFP(MachineBasicBlock::iterator &I);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
267
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
268 // Check if a COPY instruction is using FP registers.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
269 static bool isFPCopy(MachineInstr *MI) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
270 unsigned DstReg = MI->getOperand(0).getReg();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
271 unsigned SrcReg = MI->getOperand(1).getReg();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
272
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
273 return X86::RFP80RegClass.contains(DstReg) ||
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
274 X86::RFP80RegClass.contains(SrcReg);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
275 }
|
77
|
276
|
|
277 void setKillFlags(MachineBasicBlock &MBB) const;
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
278 };
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
279 char FPS::ID = 0;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
280 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
281
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
282 FunctionPass *llvm::createX86FloatingPointStackifierPass() { return new FPS(); }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
283
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
284 /// getFPReg - Return the X86::FPx register number for the specified operand.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
285 /// For example, this returns 3 for X86::FP3.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
286 static unsigned getFPReg(const MachineOperand &MO) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
287 assert(MO.isReg() && "Expected an FP register!");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
288 unsigned Reg = MO.getReg();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
289 assert(Reg >= X86::FP0 && Reg <= X86::FP6 && "Expected FP register!");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
290 return Reg - X86::FP0;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
291 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
292
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
293 /// runOnMachineFunction - Loop over all of the basic blocks, transforming FP
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
294 /// register references into FP stack references.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
295 ///
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
296 bool FPS::runOnMachineFunction(MachineFunction &MF) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
297 // We only need to run this pass if there are any FP registers used in this
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
298 // function. If it is all integer, there is nothing for us to do!
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
299 bool FPIsUsed = false;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
300
|
95
|
301 static_assert(X86::FP6 == X86::FP0+6, "Register enums aren't sorted right!");
|
|
302 const MachineRegisterInfo &MRI = MF.getRegInfo();
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
303 for (unsigned i = 0; i <= 6; ++i)
|
95
|
304 if (!MRI.reg_nodbg_empty(X86::FP0 + i)) {
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
305 FPIsUsed = true;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
306 break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
307 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
308
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
309 // Early exit.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
310 if (!FPIsUsed) return false;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
311
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
312 Bundles = &getAnalysis<EdgeBundles>();
|
77
|
313 TII = MF.getSubtarget().getInstrInfo();
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
314
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
315 // Prepare cross-MBB liveness.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
316 bundleCFG(MF);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
317
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
318 StackTop = 0;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
319
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
320 // Process the function in depth first order so that we process at least one
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
321 // of the predecessors for every reachable block in the function.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
322 SmallPtrSet<MachineBasicBlock*, 8> Processed;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
323 MachineBasicBlock *Entry = MF.begin();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
324
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
325 bool Changed = false;
|
77
|
326 for (MachineBasicBlock *BB : depth_first_ext(Entry, Processed))
|
|
327 Changed |= processBasicBlock(MF, *BB);
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
328
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
329 // Process any unreachable blocks in arbitrary order now.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
330 if (MF.size() != Processed.size())
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
331 for (MachineFunction::iterator BB = MF.begin(), E = MF.end(); BB != E; ++BB)
|
83
|
332 if (Processed.insert(BB).second)
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
333 Changed |= processBasicBlock(MF, *BB);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
334
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
335 LiveBundles.clear();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
336
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
337 return Changed;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
338 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
339
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
340 /// bundleCFG - Scan all the basic blocks to determine consistent live-in and
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
341 /// live-out sets for the FP registers. Consistent means that the set of
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
342 /// registers live-out from a block is identical to the live-in set of all
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
343 /// successors. This is not enforced by the normal live-in lists since
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
344 /// registers may be implicitly defined, or not used by all successors.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
345 void FPS::bundleCFG(MachineFunction &MF) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
346 assert(LiveBundles.empty() && "Stale data in LiveBundles");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
347 LiveBundles.resize(Bundles->getNumBundles());
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
348
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
349 // Gather the actual live-in masks for all MBBs.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
350 for (MachineFunction::iterator I = MF.begin(), E = MF.end(); I != E; ++I) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
351 MachineBasicBlock *MBB = I;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
352 const unsigned Mask = calcLiveInMask(MBB);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
353 if (!Mask)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
354 continue;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
355 // Update MBB ingoing bundle mask.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
356 LiveBundles[Bundles->getBundle(MBB->getNumber(), false)].Mask |= Mask;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
357 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
358 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
359
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
360 /// processBasicBlock - Loop over all of the instructions in the basic block,
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
361 /// transforming FP instructions into their stack form.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
362 ///
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
363 bool FPS::processBasicBlock(MachineFunction &MF, MachineBasicBlock &BB) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
364 bool Changed = false;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
365 MBB = &BB;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
366
|
77
|
367 setKillFlags(BB);
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
368 setupBlockStack();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
369
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
370 for (MachineBasicBlock::iterator I = BB.begin(); I != BB.end(); ++I) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
371 MachineInstr *MI = I;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
372 uint64_t Flags = MI->getDesc().TSFlags;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
373
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
374 unsigned FPInstClass = Flags & X86II::FPTypeMask;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
375 if (MI->isInlineAsm())
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
376 FPInstClass = X86II::SpecialFP;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
377
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
378 if (MI->isCopy() && isFPCopy(MI))
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
379 FPInstClass = X86II::SpecialFP;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
380
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
381 if (MI->isImplicitDef() &&
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
382 X86::RFP80RegClass.contains(MI->getOperand(0).getReg()))
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
383 FPInstClass = X86II::SpecialFP;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
384
|
77
|
385 if (MI->isCall())
|
|
386 FPInstClass = X86II::SpecialFP;
|
|
387
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
388 if (FPInstClass == X86II::NotFP)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
389 continue; // Efficiently ignore non-fp insts!
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
390
|
77
|
391 MachineInstr *PrevMI = nullptr;
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
392 if (I != BB.begin())
|
77
|
393 PrevMI = std::prev(I);
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
394
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
395 ++NumFP; // Keep track of # of pseudo instrs
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
396 DEBUG(dbgs() << "\nFPInst:\t" << *MI);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
397
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
398 // Get dead variables list now because the MI pointer may be deleted as part
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
399 // of processing!
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
400 SmallVector<unsigned, 8> DeadRegs;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
401 for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
402 const MachineOperand &MO = MI->getOperand(i);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
403 if (MO.isReg() && MO.isDead())
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
404 DeadRegs.push_back(MO.getReg());
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
405 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
406
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
407 switch (FPInstClass) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
408 case X86II::ZeroArgFP: handleZeroArgFP(I); break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
409 case X86II::OneArgFP: handleOneArgFP(I); break; // fstp ST(0)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
410 case X86II::OneArgFPRW: handleOneArgFPRW(I); break; // ST(0) = fsqrt(ST(0))
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
411 case X86II::TwoArgFP: handleTwoArgFP(I); break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
412 case X86II::CompareFP: handleCompareFP(I); break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
413 case X86II::CondMovFP: handleCondMovFP(I); break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
414 case X86II::SpecialFP: handleSpecialFP(I); break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
415 default: llvm_unreachable("Unknown FP Type!");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
416 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
417
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
418 // Check to see if any of the values defined by this instruction are dead
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
419 // after definition. If so, pop them.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
420 for (unsigned i = 0, e = DeadRegs.size(); i != e; ++i) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
421 unsigned Reg = DeadRegs[i];
|
77
|
422 // Check if Reg is live on the stack. An inline-asm register operand that
|
|
423 // is in the clobber list and marked dead might not be live on the stack.
|
|
424 if (Reg >= X86::FP0 && Reg <= X86::FP6 && isLive(Reg-X86::FP0)) {
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
425 DEBUG(dbgs() << "Register FP#" << Reg-X86::FP0 << " is dead!\n");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
426 freeStackSlotAfter(I, Reg-X86::FP0);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
427 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
428 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
429
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
430 // Print out all of the instructions expanded to if -debug
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
431 DEBUG(
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
432 MachineBasicBlock::iterator PrevI(PrevMI);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
433 if (I == PrevI) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
434 dbgs() << "Just deleted pseudo instruction\n";
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
435 } else {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
436 MachineBasicBlock::iterator Start = I;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
437 // Rewind to first instruction newly inserted.
|
77
|
438 while (Start != BB.begin() && std::prev(Start) != PrevI) --Start;
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
439 dbgs() << "Inserted instructions:\n\t";
|
95
|
440 Start->print(dbgs());
|
77
|
441 while (++Start != std::next(I)) {}
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
442 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
443 dumpStack();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
444 );
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
445 (void)PrevMI;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
446
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
447 Changed = true;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
448 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
449
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
450 finishBlockStack();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
451
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
452 return Changed;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
453 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
454
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
455 /// setupBlockStack - Use the live bundles to set up our model of the stack
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
456 /// to match predecessors' live out stack.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
457 void FPS::setupBlockStack() {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
458 DEBUG(dbgs() << "\nSetting up live-ins for BB#" << MBB->getNumber()
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
459 << " derived from " << MBB->getName() << ".\n");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
460 StackTop = 0;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
461 // Get the live-in bundle for MBB.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
462 const LiveBundle &Bundle =
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
463 LiveBundles[Bundles->getBundle(MBB->getNumber(), false)];
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
464
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
465 if (!Bundle.Mask) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
466 DEBUG(dbgs() << "Block has no FP live-ins.\n");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
467 return;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
468 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
469
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
470 // Depth-first iteration should ensure that we always have an assigned stack.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
471 assert(Bundle.isFixed() && "Reached block before any predecessors");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
472
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
473 // Push the fixed live-in registers.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
474 for (unsigned i = Bundle.FixCount; i > 0; --i) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
475 MBB->addLiveIn(X86::ST0+i-1);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
476 DEBUG(dbgs() << "Live-in st(" << (i-1) << "): %FP"
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
477 << unsigned(Bundle.FixStack[i-1]) << '\n');
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
478 pushReg(Bundle.FixStack[i-1]);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
479 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
480
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
481 // Kill off unwanted live-ins. This can happen with a critical edge.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
482 // FIXME: We could keep these live registers around as zombies. They may need
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
483 // to be revived at the end of a short block. It might save a few instrs.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
484 adjustLiveRegs(calcLiveInMask(MBB), MBB->begin());
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
485 DEBUG(MBB->dump());
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
486 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
487
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
488 /// finishBlockStack - Revive live-outs that are implicitly defined out of
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
489 /// MBB. Shuffle live registers to match the expected fixed stack of any
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
490 /// predecessors, and ensure that all predecessors are expecting the same
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
491 /// stack.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
492 void FPS::finishBlockStack() {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
493 // The RET handling below takes care of return blocks for us.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
494 if (MBB->succ_empty())
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
495 return;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
496
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
497 DEBUG(dbgs() << "Setting up live-outs for BB#" << MBB->getNumber()
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
498 << " derived from " << MBB->getName() << ".\n");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
499
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
500 // Get MBB's live-out bundle.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
501 unsigned BundleIdx = Bundles->getBundle(MBB->getNumber(), true);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
502 LiveBundle &Bundle = LiveBundles[BundleIdx];
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
503
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
504 // We may need to kill and define some registers to match successors.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
505 // FIXME: This can probably be combined with the shuffle below.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
506 MachineBasicBlock::iterator Term = MBB->getFirstTerminator();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
507 adjustLiveRegs(Bundle.Mask, Term);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
508
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
509 if (!Bundle.Mask) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
510 DEBUG(dbgs() << "No live-outs.\n");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
511 return;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
512 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
513
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
514 // Has the stack order been fixed yet?
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
515 DEBUG(dbgs() << "LB#" << BundleIdx << ": ");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
516 if (Bundle.isFixed()) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
517 DEBUG(dbgs() << "Shuffling stack to match.\n");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
518 shuffleStackTop(Bundle.FixStack, Bundle.FixCount, Term);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
519 } else {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
520 // Not fixed yet, we get to choose.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
521 DEBUG(dbgs() << "Fixing stack order now.\n");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
522 Bundle.FixCount = StackTop;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
523 for (unsigned i = 0; i < StackTop; ++i)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
524 Bundle.FixStack[i] = getStackEntry(i);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
525 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
526 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
527
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
528
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
529 //===----------------------------------------------------------------------===//
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
530 // Efficient Lookup Table Support
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
531 //===----------------------------------------------------------------------===//
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
532
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
533 namespace {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
534 struct TableEntry {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
535 uint16_t from;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
536 uint16_t to;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
537 bool operator<(const TableEntry &TE) const { return from < TE.from; }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
538 friend bool operator<(const TableEntry &TE, unsigned V) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
539 return TE.from < V;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
540 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
541 friend bool LLVM_ATTRIBUTE_UNUSED operator<(unsigned V,
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
542 const TableEntry &TE) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
543 return V < TE.from;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
544 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
545 };
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
546 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
547
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
548 #ifndef NDEBUG
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
549 static bool TableIsSorted(const TableEntry *Table, unsigned NumEntries) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
550 for (unsigned i = 0; i != NumEntries-1; ++i)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
551 if (!(Table[i] < Table[i+1])) return false;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
552 return true;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
553 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
554 #endif
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
555
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
556 static int Lookup(const TableEntry *Table, unsigned N, unsigned Opcode) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
557 const TableEntry *I = std::lower_bound(Table, Table+N, Opcode);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
558 if (I != Table+N && I->from == Opcode)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
559 return I->to;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
560 return -1;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
561 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
562
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
563 #ifdef NDEBUG
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
564 #define ASSERT_SORTED(TABLE)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
565 #else
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
566 #define ASSERT_SORTED(TABLE) \
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
567 { static bool TABLE##Checked = false; \
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
568 if (!TABLE##Checked) { \
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
569 assert(TableIsSorted(TABLE, array_lengthof(TABLE)) && \
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
570 "All lookup tables must be sorted for efficient access!"); \
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
571 TABLE##Checked = true; \
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
572 } \
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
573 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
574 #endif
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
575
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
576 //===----------------------------------------------------------------------===//
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
577 // Register File -> Register Stack Mapping Methods
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
578 //===----------------------------------------------------------------------===//
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
579
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
580 // OpcodeTable - Sorted map of register instructions to their stack version.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
581 // The first element is an register file pseudo instruction, the second is the
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
582 // concrete X86 instruction which uses the register stack.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
583 //
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
584 static const TableEntry OpcodeTable[] = {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
585 { X86::ABS_Fp32 , X86::ABS_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
586 { X86::ABS_Fp64 , X86::ABS_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
587 { X86::ABS_Fp80 , X86::ABS_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
588 { X86::ADD_Fp32m , X86::ADD_F32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
589 { X86::ADD_Fp64m , X86::ADD_F64m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
590 { X86::ADD_Fp64m32 , X86::ADD_F32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
591 { X86::ADD_Fp80m32 , X86::ADD_F32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
592 { X86::ADD_Fp80m64 , X86::ADD_F64m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
593 { X86::ADD_FpI16m32 , X86::ADD_FI16m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
594 { X86::ADD_FpI16m64 , X86::ADD_FI16m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
595 { X86::ADD_FpI16m80 , X86::ADD_FI16m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
596 { X86::ADD_FpI32m32 , X86::ADD_FI32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
597 { X86::ADD_FpI32m64 , X86::ADD_FI32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
598 { X86::ADD_FpI32m80 , X86::ADD_FI32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
599 { X86::CHS_Fp32 , X86::CHS_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
600 { X86::CHS_Fp64 , X86::CHS_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
601 { X86::CHS_Fp80 , X86::CHS_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
602 { X86::CMOVBE_Fp32 , X86::CMOVBE_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
603 { X86::CMOVBE_Fp64 , X86::CMOVBE_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
604 { X86::CMOVBE_Fp80 , X86::CMOVBE_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
605 { X86::CMOVB_Fp32 , X86::CMOVB_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
606 { X86::CMOVB_Fp64 , X86::CMOVB_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
607 { X86::CMOVB_Fp80 , X86::CMOVB_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
608 { X86::CMOVE_Fp32 , X86::CMOVE_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
609 { X86::CMOVE_Fp64 , X86::CMOVE_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
610 { X86::CMOVE_Fp80 , X86::CMOVE_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
611 { X86::CMOVNBE_Fp32 , X86::CMOVNBE_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
612 { X86::CMOVNBE_Fp64 , X86::CMOVNBE_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
613 { X86::CMOVNBE_Fp80 , X86::CMOVNBE_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
614 { X86::CMOVNB_Fp32 , X86::CMOVNB_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
615 { X86::CMOVNB_Fp64 , X86::CMOVNB_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
616 { X86::CMOVNB_Fp80 , X86::CMOVNB_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
617 { X86::CMOVNE_Fp32 , X86::CMOVNE_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
618 { X86::CMOVNE_Fp64 , X86::CMOVNE_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
619 { X86::CMOVNE_Fp80 , X86::CMOVNE_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
620 { X86::CMOVNP_Fp32 , X86::CMOVNP_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
621 { X86::CMOVNP_Fp64 , X86::CMOVNP_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
622 { X86::CMOVNP_Fp80 , X86::CMOVNP_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
623 { X86::CMOVP_Fp32 , X86::CMOVP_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
624 { X86::CMOVP_Fp64 , X86::CMOVP_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
625 { X86::CMOVP_Fp80 , X86::CMOVP_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
626 { X86::COS_Fp32 , X86::COS_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
627 { X86::COS_Fp64 , X86::COS_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
628 { X86::COS_Fp80 , X86::COS_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
629 { X86::DIVR_Fp32m , X86::DIVR_F32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
630 { X86::DIVR_Fp64m , X86::DIVR_F64m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
631 { X86::DIVR_Fp64m32 , X86::DIVR_F32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
632 { X86::DIVR_Fp80m32 , X86::DIVR_F32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
633 { X86::DIVR_Fp80m64 , X86::DIVR_F64m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
634 { X86::DIVR_FpI16m32, X86::DIVR_FI16m},
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
635 { X86::DIVR_FpI16m64, X86::DIVR_FI16m},
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
636 { X86::DIVR_FpI16m80, X86::DIVR_FI16m},
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
637 { X86::DIVR_FpI32m32, X86::DIVR_FI32m},
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
638 { X86::DIVR_FpI32m64, X86::DIVR_FI32m},
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
639 { X86::DIVR_FpI32m80, X86::DIVR_FI32m},
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
640 { X86::DIV_Fp32m , X86::DIV_F32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
641 { X86::DIV_Fp64m , X86::DIV_F64m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
642 { X86::DIV_Fp64m32 , X86::DIV_F32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
643 { X86::DIV_Fp80m32 , X86::DIV_F32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
644 { X86::DIV_Fp80m64 , X86::DIV_F64m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
645 { X86::DIV_FpI16m32 , X86::DIV_FI16m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
646 { X86::DIV_FpI16m64 , X86::DIV_FI16m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
647 { X86::DIV_FpI16m80 , X86::DIV_FI16m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
648 { X86::DIV_FpI32m32 , X86::DIV_FI32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
649 { X86::DIV_FpI32m64 , X86::DIV_FI32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
650 { X86::DIV_FpI32m80 , X86::DIV_FI32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
651 { X86::ILD_Fp16m32 , X86::ILD_F16m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
652 { X86::ILD_Fp16m64 , X86::ILD_F16m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
653 { X86::ILD_Fp16m80 , X86::ILD_F16m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
654 { X86::ILD_Fp32m32 , X86::ILD_F32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
655 { X86::ILD_Fp32m64 , X86::ILD_F32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
656 { X86::ILD_Fp32m80 , X86::ILD_F32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
657 { X86::ILD_Fp64m32 , X86::ILD_F64m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
658 { X86::ILD_Fp64m64 , X86::ILD_F64m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
659 { X86::ILD_Fp64m80 , X86::ILD_F64m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
660 { X86::ISTT_Fp16m32 , X86::ISTT_FP16m},
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
661 { X86::ISTT_Fp16m64 , X86::ISTT_FP16m},
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
662 { X86::ISTT_Fp16m80 , X86::ISTT_FP16m},
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
663 { X86::ISTT_Fp32m32 , X86::ISTT_FP32m},
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
664 { X86::ISTT_Fp32m64 , X86::ISTT_FP32m},
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
665 { X86::ISTT_Fp32m80 , X86::ISTT_FP32m},
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
666 { X86::ISTT_Fp64m32 , X86::ISTT_FP64m},
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
667 { X86::ISTT_Fp64m64 , X86::ISTT_FP64m},
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
668 { X86::ISTT_Fp64m80 , X86::ISTT_FP64m},
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
669 { X86::IST_Fp16m32 , X86::IST_F16m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
670 { X86::IST_Fp16m64 , X86::IST_F16m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
671 { X86::IST_Fp16m80 , X86::IST_F16m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
672 { X86::IST_Fp32m32 , X86::IST_F32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
673 { X86::IST_Fp32m64 , X86::IST_F32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
674 { X86::IST_Fp32m80 , X86::IST_F32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
675 { X86::IST_Fp64m32 , X86::IST_FP64m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
676 { X86::IST_Fp64m64 , X86::IST_FP64m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
677 { X86::IST_Fp64m80 , X86::IST_FP64m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
678 { X86::LD_Fp032 , X86::LD_F0 },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
679 { X86::LD_Fp064 , X86::LD_F0 },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
680 { X86::LD_Fp080 , X86::LD_F0 },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
681 { X86::LD_Fp132 , X86::LD_F1 },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
682 { X86::LD_Fp164 , X86::LD_F1 },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
683 { X86::LD_Fp180 , X86::LD_F1 },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
684 { X86::LD_Fp32m , X86::LD_F32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
685 { X86::LD_Fp32m64 , X86::LD_F32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
686 { X86::LD_Fp32m80 , X86::LD_F32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
687 { X86::LD_Fp64m , X86::LD_F64m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
688 { X86::LD_Fp64m80 , X86::LD_F64m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
689 { X86::LD_Fp80m , X86::LD_F80m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
690 { X86::MUL_Fp32m , X86::MUL_F32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
691 { X86::MUL_Fp64m , X86::MUL_F64m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
692 { X86::MUL_Fp64m32 , X86::MUL_F32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
693 { X86::MUL_Fp80m32 , X86::MUL_F32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
694 { X86::MUL_Fp80m64 , X86::MUL_F64m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
695 { X86::MUL_FpI16m32 , X86::MUL_FI16m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
696 { X86::MUL_FpI16m64 , X86::MUL_FI16m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
697 { X86::MUL_FpI16m80 , X86::MUL_FI16m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
698 { X86::MUL_FpI32m32 , X86::MUL_FI32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
699 { X86::MUL_FpI32m64 , X86::MUL_FI32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
700 { X86::MUL_FpI32m80 , X86::MUL_FI32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
701 { X86::SIN_Fp32 , X86::SIN_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
702 { X86::SIN_Fp64 , X86::SIN_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
703 { X86::SIN_Fp80 , X86::SIN_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
704 { X86::SQRT_Fp32 , X86::SQRT_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
705 { X86::SQRT_Fp64 , X86::SQRT_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
706 { X86::SQRT_Fp80 , X86::SQRT_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
707 { X86::ST_Fp32m , X86::ST_F32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
708 { X86::ST_Fp64m , X86::ST_F64m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
709 { X86::ST_Fp64m32 , X86::ST_F32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
710 { X86::ST_Fp80m32 , X86::ST_F32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
711 { X86::ST_Fp80m64 , X86::ST_F64m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
712 { X86::ST_FpP80m , X86::ST_FP80m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
713 { X86::SUBR_Fp32m , X86::SUBR_F32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
714 { X86::SUBR_Fp64m , X86::SUBR_F64m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
715 { X86::SUBR_Fp64m32 , X86::SUBR_F32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
716 { X86::SUBR_Fp80m32 , X86::SUBR_F32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
717 { X86::SUBR_Fp80m64 , X86::SUBR_F64m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
718 { X86::SUBR_FpI16m32, X86::SUBR_FI16m},
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
719 { X86::SUBR_FpI16m64, X86::SUBR_FI16m},
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
720 { X86::SUBR_FpI16m80, X86::SUBR_FI16m},
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
721 { X86::SUBR_FpI32m32, X86::SUBR_FI32m},
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
722 { X86::SUBR_FpI32m64, X86::SUBR_FI32m},
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
723 { X86::SUBR_FpI32m80, X86::SUBR_FI32m},
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
724 { X86::SUB_Fp32m , X86::SUB_F32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
725 { X86::SUB_Fp64m , X86::SUB_F64m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
726 { X86::SUB_Fp64m32 , X86::SUB_F32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
727 { X86::SUB_Fp80m32 , X86::SUB_F32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
728 { X86::SUB_Fp80m64 , X86::SUB_F64m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
729 { X86::SUB_FpI16m32 , X86::SUB_FI16m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
730 { X86::SUB_FpI16m64 , X86::SUB_FI16m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
731 { X86::SUB_FpI16m80 , X86::SUB_FI16m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
732 { X86::SUB_FpI32m32 , X86::SUB_FI32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
733 { X86::SUB_FpI32m64 , X86::SUB_FI32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
734 { X86::SUB_FpI32m80 , X86::SUB_FI32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
735 { X86::TST_Fp32 , X86::TST_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
736 { X86::TST_Fp64 , X86::TST_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
737 { X86::TST_Fp80 , X86::TST_F },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
738 { X86::UCOM_FpIr32 , X86::UCOM_FIr },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
739 { X86::UCOM_FpIr64 , X86::UCOM_FIr },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
740 { X86::UCOM_FpIr80 , X86::UCOM_FIr },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
741 { X86::UCOM_Fpr32 , X86::UCOM_Fr },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
742 { X86::UCOM_Fpr64 , X86::UCOM_Fr },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
743 { X86::UCOM_Fpr80 , X86::UCOM_Fr },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
744 };
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
745
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
746 static unsigned getConcreteOpcode(unsigned Opcode) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
747 ASSERT_SORTED(OpcodeTable);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
748 int Opc = Lookup(OpcodeTable, array_lengthof(OpcodeTable), Opcode);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
749 assert(Opc != -1 && "FP Stack instruction not in OpcodeTable!");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
750 return Opc;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
751 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
752
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
753 //===----------------------------------------------------------------------===//
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
754 // Helper Methods
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
755 //===----------------------------------------------------------------------===//
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
756
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
757 // PopTable - Sorted map of instructions to their popping version. The first
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
758 // element is an instruction, the second is the version which pops.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
759 //
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
760 static const TableEntry PopTable[] = {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
761 { X86::ADD_FrST0 , X86::ADD_FPrST0 },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
762
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
763 { X86::DIVR_FrST0, X86::DIVR_FPrST0 },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
764 { X86::DIV_FrST0 , X86::DIV_FPrST0 },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
765
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
766 { X86::IST_F16m , X86::IST_FP16m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
767 { X86::IST_F32m , X86::IST_FP32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
768
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
769 { X86::MUL_FrST0 , X86::MUL_FPrST0 },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
770
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
771 { X86::ST_F32m , X86::ST_FP32m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
772 { X86::ST_F64m , X86::ST_FP64m },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
773 { X86::ST_Frr , X86::ST_FPrr },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
774
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
775 { X86::SUBR_FrST0, X86::SUBR_FPrST0 },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
776 { X86::SUB_FrST0 , X86::SUB_FPrST0 },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
777
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
778 { X86::UCOM_FIr , X86::UCOM_FIPr },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
779
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
780 { X86::UCOM_FPr , X86::UCOM_FPPr },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
781 { X86::UCOM_Fr , X86::UCOM_FPr },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
782 };
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
783
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
784 /// popStackAfter - Pop the current value off of the top of the FP stack after
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
785 /// the specified instruction. This attempts to be sneaky and combine the pop
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
786 /// into the instruction itself if possible. The iterator is left pointing to
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
787 /// the last instruction, be it a new pop instruction inserted, or the old
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
788 /// instruction if it was modified in place.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
789 ///
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
790 void FPS::popStackAfter(MachineBasicBlock::iterator &I) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
791 MachineInstr* MI = I;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
792 DebugLoc dl = MI->getDebugLoc();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
793 ASSERT_SORTED(PopTable);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
794 if (StackTop == 0)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
795 report_fatal_error("Cannot pop empty stack!");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
796 RegMap[Stack[--StackTop]] = ~0; // Update state
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
797
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
798 // Check to see if there is a popping version of this instruction...
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
799 int Opcode = Lookup(PopTable, array_lengthof(PopTable), I->getOpcode());
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
800 if (Opcode != -1) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
801 I->setDesc(TII->get(Opcode));
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
802 if (Opcode == X86::UCOM_FPPr)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
803 I->RemoveOperand(0);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
804 } else { // Insert an explicit pop
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
805 I = BuildMI(*MBB, ++I, dl, TII->get(X86::ST_FPrr)).addReg(X86::ST0);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
806 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
807 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
808
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
809 /// freeStackSlotAfter - Free the specified register from the register stack, so
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
810 /// that it is no longer in a register. If the register is currently at the top
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
811 /// of the stack, we just pop the current instruction, otherwise we store the
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
812 /// current top-of-stack into the specified slot, then pop the top of stack.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
813 void FPS::freeStackSlotAfter(MachineBasicBlock::iterator &I, unsigned FPRegNo) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
814 if (getStackEntry(0) == FPRegNo) { // already at the top of stack? easy.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
815 popStackAfter(I);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
816 return;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
817 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
818
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
819 // Otherwise, store the top of stack into the dead slot, killing the operand
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
820 // without having to add in an explicit xchg then pop.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
821 //
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
822 I = freeStackSlotBefore(++I, FPRegNo);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
823 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
824
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
825 /// freeStackSlotBefore - Free the specified register without trying any
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
826 /// folding.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
827 MachineBasicBlock::iterator
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
828 FPS::freeStackSlotBefore(MachineBasicBlock::iterator I, unsigned FPRegNo) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
829 unsigned STReg = getSTReg(FPRegNo);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
830 unsigned OldSlot = getSlot(FPRegNo);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
831 unsigned TopReg = Stack[StackTop-1];
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
832 Stack[OldSlot] = TopReg;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
833 RegMap[TopReg] = OldSlot;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
834 RegMap[FPRegNo] = ~0;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
835 Stack[--StackTop] = ~0;
|
83
|
836 return BuildMI(*MBB, I, DebugLoc(), TII->get(X86::ST_FPrr))
|
|
837 .addReg(STReg)
|
|
838 .getInstr();
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
839 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
840
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
841 /// adjustLiveRegs - Kill and revive registers such that exactly the FP
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
842 /// registers with a bit in Mask are live.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
843 void FPS::adjustLiveRegs(unsigned Mask, MachineBasicBlock::iterator I) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
844 unsigned Defs = Mask;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
845 unsigned Kills = 0;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
846 for (unsigned i = 0; i < StackTop; ++i) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
847 unsigned RegNo = Stack[i];
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
848 if (!(Defs & (1 << RegNo)))
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
849 // This register is live, but we don't want it.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
850 Kills |= (1 << RegNo);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
851 else
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
852 // We don't need to imp-def this live register.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
853 Defs &= ~(1 << RegNo);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
854 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
855 assert((Kills & Defs) == 0 && "Register needs killing and def'ing?");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
856
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
857 // Produce implicit-defs for free by using killed registers.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
858 while (Kills && Defs) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
859 unsigned KReg = countTrailingZeros(Kills);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
860 unsigned DReg = countTrailingZeros(Defs);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
861 DEBUG(dbgs() << "Renaming %FP" << KReg << " as imp %FP" << DReg << "\n");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
862 std::swap(Stack[getSlot(KReg)], Stack[getSlot(DReg)]);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
863 std::swap(RegMap[KReg], RegMap[DReg]);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
864 Kills &= ~(1 << KReg);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
865 Defs &= ~(1 << DReg);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
866 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
867
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
868 // Kill registers by popping.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
869 if (Kills && I != MBB->begin()) {
|
77
|
870 MachineBasicBlock::iterator I2 = std::prev(I);
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
871 while (StackTop) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
872 unsigned KReg = getStackEntry(0);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
873 if (!(Kills & (1 << KReg)))
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
874 break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
875 DEBUG(dbgs() << "Popping %FP" << KReg << "\n");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
876 popStackAfter(I2);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
877 Kills &= ~(1 << KReg);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
878 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
879 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
880
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
881 // Manually kill the rest.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
882 while (Kills) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
883 unsigned KReg = countTrailingZeros(Kills);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
884 DEBUG(dbgs() << "Killing %FP" << KReg << "\n");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
885 freeStackSlotBefore(I, KReg);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
886 Kills &= ~(1 << KReg);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
887 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
888
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
889 // Load zeros for all the imp-defs.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
890 while(Defs) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
891 unsigned DReg = countTrailingZeros(Defs);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
892 DEBUG(dbgs() << "Defining %FP" << DReg << " as 0\n");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
893 BuildMI(*MBB, I, DebugLoc(), TII->get(X86::LD_F0));
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
894 pushReg(DReg);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
895 Defs &= ~(1 << DReg);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
896 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
897
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
898 // Now we should have the correct registers live.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
899 DEBUG(dumpStack());
|
83
|
900 assert(StackTop == countPopulation(Mask) && "Live count mismatch");
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
901 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
902
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
903 /// shuffleStackTop - emit fxch instructions before I to shuffle the top
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
904 /// FixCount entries into the order given by FixStack.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
905 /// FIXME: Is there a better algorithm than insertion sort?
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
906 void FPS::shuffleStackTop(const unsigned char *FixStack,
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
907 unsigned FixCount,
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
908 MachineBasicBlock::iterator I) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
909 // Move items into place, starting from the desired stack bottom.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
910 while (FixCount--) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
911 // Old register at position FixCount.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
912 unsigned OldReg = getStackEntry(FixCount);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
913 // Desired register at position FixCount.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
914 unsigned Reg = FixStack[FixCount];
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
915 if (Reg == OldReg)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
916 continue;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
917 // (Reg st0) (OldReg st0) = (Reg OldReg st0)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
918 moveToTop(Reg, I);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
919 if (FixCount > 0)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
920 moveToTop(OldReg, I);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
921 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
922 DEBUG(dumpStack());
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
923 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
924
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
925
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
926 //===----------------------------------------------------------------------===//
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
927 // Instruction transformation implementation
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
928 //===----------------------------------------------------------------------===//
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
929
|
77
|
930 void FPS::handleCall(MachineBasicBlock::iterator &I) {
|
|
931 unsigned STReturns = 0;
|
|
932
|
|
933 for (const auto &MO : I->operands()) {
|
|
934 if (!MO.isReg())
|
|
935 continue;
|
|
936
|
|
937 unsigned R = MO.getReg() - X86::FP0;
|
|
938
|
|
939 if (R < 8) {
|
|
940 assert(MO.isDef() && MO.isImplicit());
|
|
941 STReturns |= 1 << R;
|
|
942 }
|
|
943 }
|
|
944
|
83
|
945 unsigned N = countTrailingOnes(STReturns);
|
77
|
946
|
|
947 // FP registers used for function return must be consecutive starting at
|
|
948 // FP0.
|
|
949 assert(STReturns == 0 || (isMask_32(STReturns) && N <= 2));
|
|
950
|
|
951 for (unsigned I = 0; I < N; ++I)
|
|
952 pushReg(N - I - 1);
|
|
953 }
|
|
954
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
955 /// handleZeroArgFP - ST(0) = fld0 ST(0) = flds <mem>
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
956 ///
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
957 void FPS::handleZeroArgFP(MachineBasicBlock::iterator &I) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
958 MachineInstr *MI = I;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
959 unsigned DestReg = getFPReg(MI->getOperand(0));
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
960
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
961 // Change from the pseudo instruction to the concrete instruction.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
962 MI->RemoveOperand(0); // Remove the explicit ST(0) operand
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
963 MI->setDesc(TII->get(getConcreteOpcode(MI->getOpcode())));
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
964
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
965 // Result gets pushed on the stack.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
966 pushReg(DestReg);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
967 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
968
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
969 /// handleOneArgFP - fst <mem>, ST(0)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
970 ///
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
971 void FPS::handleOneArgFP(MachineBasicBlock::iterator &I) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
972 MachineInstr *MI = I;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
973 unsigned NumOps = MI->getDesc().getNumOperands();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
974 assert((NumOps == X86::AddrNumOperands + 1 || NumOps == 1) &&
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
975 "Can only handle fst* & ftst instructions!");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
976
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
977 // Is this the last use of the source register?
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
978 unsigned Reg = getFPReg(MI->getOperand(NumOps-1));
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
979 bool KillsSrc = MI->killsRegister(X86::FP0+Reg);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
980
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
981 // FISTP64m is strange because there isn't a non-popping versions.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
982 // If we have one _and_ we don't want to pop the operand, duplicate the value
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
983 // on the stack instead of moving it. This ensure that popping the value is
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
984 // always ok.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
985 // Ditto FISTTP16m, FISTTP32m, FISTTP64m, ST_FpP80m.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
986 //
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
987 if (!KillsSrc &&
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
988 (MI->getOpcode() == X86::IST_Fp64m32 ||
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
989 MI->getOpcode() == X86::ISTT_Fp16m32 ||
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
990 MI->getOpcode() == X86::ISTT_Fp32m32 ||
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
991 MI->getOpcode() == X86::ISTT_Fp64m32 ||
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
992 MI->getOpcode() == X86::IST_Fp64m64 ||
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
993 MI->getOpcode() == X86::ISTT_Fp16m64 ||
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
994 MI->getOpcode() == X86::ISTT_Fp32m64 ||
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
995 MI->getOpcode() == X86::ISTT_Fp64m64 ||
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
996 MI->getOpcode() == X86::IST_Fp64m80 ||
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
997 MI->getOpcode() == X86::ISTT_Fp16m80 ||
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
998 MI->getOpcode() == X86::ISTT_Fp32m80 ||
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
999 MI->getOpcode() == X86::ISTT_Fp64m80 ||
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1000 MI->getOpcode() == X86::ST_FpP80m)) {
|
77
|
1001 duplicateToTop(Reg, ScratchFPReg, I);
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1002 } else {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1003 moveToTop(Reg, I); // Move to the top of the stack...
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1004 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1005
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1006 // Convert from the pseudo instruction to the concrete instruction.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1007 MI->RemoveOperand(NumOps-1); // Remove explicit ST(0) operand
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1008 MI->setDesc(TII->get(getConcreteOpcode(MI->getOpcode())));
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1009
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1010 if (MI->getOpcode() == X86::IST_FP64m ||
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1011 MI->getOpcode() == X86::ISTT_FP16m ||
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1012 MI->getOpcode() == X86::ISTT_FP32m ||
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1013 MI->getOpcode() == X86::ISTT_FP64m ||
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1014 MI->getOpcode() == X86::ST_FP80m) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1015 if (StackTop == 0)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1016 report_fatal_error("Stack empty??");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1017 --StackTop;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1018 } else if (KillsSrc) { // Last use of operand?
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1019 popStackAfter(I);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1020 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1021 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1022
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1023
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1024 /// handleOneArgFPRW: Handle instructions that read from the top of stack and
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1025 /// replace the value with a newly computed value. These instructions may have
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1026 /// non-fp operands after their FP operands.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1027 ///
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1028 /// Examples:
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1029 /// R1 = fchs R2
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1030 /// R1 = fadd R2, [mem]
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1031 ///
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1032 void FPS::handleOneArgFPRW(MachineBasicBlock::iterator &I) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1033 MachineInstr *MI = I;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1034 #ifndef NDEBUG
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1035 unsigned NumOps = MI->getDesc().getNumOperands();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1036 assert(NumOps >= 2 && "FPRW instructions must have 2 ops!!");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1037 #endif
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1038
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1039 // Is this the last use of the source register?
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1040 unsigned Reg = getFPReg(MI->getOperand(1));
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1041 bool KillsSrc = MI->killsRegister(X86::FP0+Reg);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1042
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1043 if (KillsSrc) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1044 // If this is the last use of the source register, just make sure it's on
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1045 // the top of the stack.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1046 moveToTop(Reg, I);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1047 if (StackTop == 0)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1048 report_fatal_error("Stack cannot be empty!");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1049 --StackTop;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1050 pushReg(getFPReg(MI->getOperand(0)));
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1051 } else {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1052 // If this is not the last use of the source register, _copy_ it to the top
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1053 // of the stack.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1054 duplicateToTop(Reg, getFPReg(MI->getOperand(0)), I);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1055 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1056
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1057 // Change from the pseudo instruction to the concrete instruction.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1058 MI->RemoveOperand(1); // Drop the source operand.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1059 MI->RemoveOperand(0); // Drop the destination operand.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1060 MI->setDesc(TII->get(getConcreteOpcode(MI->getOpcode())));
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1061 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1062
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1063
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1064 //===----------------------------------------------------------------------===//
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1065 // Define tables of various ways to map pseudo instructions
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1066 //
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1067
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1068 // ForwardST0Table - Map: A = B op C into: ST(0) = ST(0) op ST(i)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1069 static const TableEntry ForwardST0Table[] = {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1070 { X86::ADD_Fp32 , X86::ADD_FST0r },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1071 { X86::ADD_Fp64 , X86::ADD_FST0r },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1072 { X86::ADD_Fp80 , X86::ADD_FST0r },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1073 { X86::DIV_Fp32 , X86::DIV_FST0r },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1074 { X86::DIV_Fp64 , X86::DIV_FST0r },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1075 { X86::DIV_Fp80 , X86::DIV_FST0r },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1076 { X86::MUL_Fp32 , X86::MUL_FST0r },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1077 { X86::MUL_Fp64 , X86::MUL_FST0r },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1078 { X86::MUL_Fp80 , X86::MUL_FST0r },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1079 { X86::SUB_Fp32 , X86::SUB_FST0r },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1080 { X86::SUB_Fp64 , X86::SUB_FST0r },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1081 { X86::SUB_Fp80 , X86::SUB_FST0r },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1082 };
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1083
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1084 // ReverseST0Table - Map: A = B op C into: ST(0) = ST(i) op ST(0)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1085 static const TableEntry ReverseST0Table[] = {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1086 { X86::ADD_Fp32 , X86::ADD_FST0r }, // commutative
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1087 { X86::ADD_Fp64 , X86::ADD_FST0r }, // commutative
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1088 { X86::ADD_Fp80 , X86::ADD_FST0r }, // commutative
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1089 { X86::DIV_Fp32 , X86::DIVR_FST0r },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1090 { X86::DIV_Fp64 , X86::DIVR_FST0r },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1091 { X86::DIV_Fp80 , X86::DIVR_FST0r },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1092 { X86::MUL_Fp32 , X86::MUL_FST0r }, // commutative
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1093 { X86::MUL_Fp64 , X86::MUL_FST0r }, // commutative
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1094 { X86::MUL_Fp80 , X86::MUL_FST0r }, // commutative
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1095 { X86::SUB_Fp32 , X86::SUBR_FST0r },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1096 { X86::SUB_Fp64 , X86::SUBR_FST0r },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1097 { X86::SUB_Fp80 , X86::SUBR_FST0r },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1098 };
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1099
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1100 // ForwardSTiTable - Map: A = B op C into: ST(i) = ST(0) op ST(i)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1101 static const TableEntry ForwardSTiTable[] = {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1102 { X86::ADD_Fp32 , X86::ADD_FrST0 }, // commutative
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1103 { X86::ADD_Fp64 , X86::ADD_FrST0 }, // commutative
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1104 { X86::ADD_Fp80 , X86::ADD_FrST0 }, // commutative
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1105 { X86::DIV_Fp32 , X86::DIVR_FrST0 },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1106 { X86::DIV_Fp64 , X86::DIVR_FrST0 },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1107 { X86::DIV_Fp80 , X86::DIVR_FrST0 },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1108 { X86::MUL_Fp32 , X86::MUL_FrST0 }, // commutative
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1109 { X86::MUL_Fp64 , X86::MUL_FrST0 }, // commutative
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1110 { X86::MUL_Fp80 , X86::MUL_FrST0 }, // commutative
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1111 { X86::SUB_Fp32 , X86::SUBR_FrST0 },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1112 { X86::SUB_Fp64 , X86::SUBR_FrST0 },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1113 { X86::SUB_Fp80 , X86::SUBR_FrST0 },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1114 };
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1115
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1116 // ReverseSTiTable - Map: A = B op C into: ST(i) = ST(i) op ST(0)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1117 static const TableEntry ReverseSTiTable[] = {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1118 { X86::ADD_Fp32 , X86::ADD_FrST0 },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1119 { X86::ADD_Fp64 , X86::ADD_FrST0 },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1120 { X86::ADD_Fp80 , X86::ADD_FrST0 },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1121 { X86::DIV_Fp32 , X86::DIV_FrST0 },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1122 { X86::DIV_Fp64 , X86::DIV_FrST0 },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1123 { X86::DIV_Fp80 , X86::DIV_FrST0 },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1124 { X86::MUL_Fp32 , X86::MUL_FrST0 },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1125 { X86::MUL_Fp64 , X86::MUL_FrST0 },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1126 { X86::MUL_Fp80 , X86::MUL_FrST0 },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1127 { X86::SUB_Fp32 , X86::SUB_FrST0 },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1128 { X86::SUB_Fp64 , X86::SUB_FrST0 },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1129 { X86::SUB_Fp80 , X86::SUB_FrST0 },
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1130 };
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1131
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1132
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1133 /// handleTwoArgFP - Handle instructions like FADD and friends which are virtual
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1134 /// instructions which need to be simplified and possibly transformed.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1135 ///
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1136 /// Result: ST(0) = fsub ST(0), ST(i)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1137 /// ST(i) = fsub ST(0), ST(i)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1138 /// ST(0) = fsubr ST(0), ST(i)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1139 /// ST(i) = fsubr ST(0), ST(i)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1140 ///
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1141 void FPS::handleTwoArgFP(MachineBasicBlock::iterator &I) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1142 ASSERT_SORTED(ForwardST0Table); ASSERT_SORTED(ReverseST0Table);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1143 ASSERT_SORTED(ForwardSTiTable); ASSERT_SORTED(ReverseSTiTable);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1144 MachineInstr *MI = I;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1145
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1146 unsigned NumOperands = MI->getDesc().getNumOperands();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1147 assert(NumOperands == 3 && "Illegal TwoArgFP instruction!");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1148 unsigned Dest = getFPReg(MI->getOperand(0));
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1149 unsigned Op0 = getFPReg(MI->getOperand(NumOperands-2));
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1150 unsigned Op1 = getFPReg(MI->getOperand(NumOperands-1));
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1151 bool KillsOp0 = MI->killsRegister(X86::FP0+Op0);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1152 bool KillsOp1 = MI->killsRegister(X86::FP0+Op1);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1153 DebugLoc dl = MI->getDebugLoc();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1154
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1155 unsigned TOS = getStackEntry(0);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1156
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1157 // One of our operands must be on the top of the stack. If neither is yet, we
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1158 // need to move one.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1159 if (Op0 != TOS && Op1 != TOS) { // No operand at TOS?
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1160 // We can choose to move either operand to the top of the stack. If one of
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1161 // the operands is killed by this instruction, we want that one so that we
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1162 // can update right on top of the old version.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1163 if (KillsOp0) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1164 moveToTop(Op0, I); // Move dead operand to TOS.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1165 TOS = Op0;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1166 } else if (KillsOp1) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1167 moveToTop(Op1, I);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1168 TOS = Op1;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1169 } else {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1170 // All of the operands are live after this instruction executes, so we
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1171 // cannot update on top of any operand. Because of this, we must
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1172 // duplicate one of the stack elements to the top. It doesn't matter
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1173 // which one we pick.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1174 //
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1175 duplicateToTop(Op0, Dest, I);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1176 Op0 = TOS = Dest;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1177 KillsOp0 = true;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1178 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1179 } else if (!KillsOp0 && !KillsOp1) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1180 // If we DO have one of our operands at the top of the stack, but we don't
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1181 // have a dead operand, we must duplicate one of the operands to a new slot
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1182 // on the stack.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1183 duplicateToTop(Op0, Dest, I);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1184 Op0 = TOS = Dest;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1185 KillsOp0 = true;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1186 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1187
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1188 // Now we know that one of our operands is on the top of the stack, and at
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1189 // least one of our operands is killed by this instruction.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1190 assert((TOS == Op0 || TOS == Op1) && (KillsOp0 || KillsOp1) &&
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1191 "Stack conditions not set up right!");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1192
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1193 // We decide which form to use based on what is on the top of the stack, and
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1194 // which operand is killed by this instruction.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1195 const TableEntry *InstTable;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1196 bool isForward = TOS == Op0;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1197 bool updateST0 = (TOS == Op0 && !KillsOp1) || (TOS == Op1 && !KillsOp0);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1198 if (updateST0) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1199 if (isForward)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1200 InstTable = ForwardST0Table;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1201 else
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1202 InstTable = ReverseST0Table;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1203 } else {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1204 if (isForward)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1205 InstTable = ForwardSTiTable;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1206 else
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1207 InstTable = ReverseSTiTable;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1208 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1209
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1210 int Opcode = Lookup(InstTable, array_lengthof(ForwardST0Table),
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1211 MI->getOpcode());
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1212 assert(Opcode != -1 && "Unknown TwoArgFP pseudo instruction!");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1213
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1214 // NotTOS - The register which is not on the top of stack...
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1215 unsigned NotTOS = (TOS == Op0) ? Op1 : Op0;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1216
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1217 // Replace the old instruction with a new instruction
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1218 MBB->remove(I++);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1219 I = BuildMI(*MBB, I, dl, TII->get(Opcode)).addReg(getSTReg(NotTOS));
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1220
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1221 // If both operands are killed, pop one off of the stack in addition to
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1222 // overwriting the other one.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1223 if (KillsOp0 && KillsOp1 && Op0 != Op1) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1224 assert(!updateST0 && "Should have updated other operand!");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1225 popStackAfter(I); // Pop the top of stack
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1226 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1227
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1228 // Update stack information so that we know the destination register is now on
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1229 // the stack.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1230 unsigned UpdatedSlot = getSlot(updateST0 ? TOS : NotTOS);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1231 assert(UpdatedSlot < StackTop && Dest < 7);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1232 Stack[UpdatedSlot] = Dest;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1233 RegMap[Dest] = UpdatedSlot;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1234 MBB->getParent()->DeleteMachineInstr(MI); // Remove the old instruction
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1235 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1236
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1237 /// handleCompareFP - Handle FUCOM and FUCOMI instructions, which have two FP
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1238 /// register arguments and no explicit destinations.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1239 ///
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1240 void FPS::handleCompareFP(MachineBasicBlock::iterator &I) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1241 ASSERT_SORTED(ForwardST0Table); ASSERT_SORTED(ReverseST0Table);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1242 ASSERT_SORTED(ForwardSTiTable); ASSERT_SORTED(ReverseSTiTable);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1243 MachineInstr *MI = I;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1244
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1245 unsigned NumOperands = MI->getDesc().getNumOperands();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1246 assert(NumOperands == 2 && "Illegal FUCOM* instruction!");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1247 unsigned Op0 = getFPReg(MI->getOperand(NumOperands-2));
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1248 unsigned Op1 = getFPReg(MI->getOperand(NumOperands-1));
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1249 bool KillsOp0 = MI->killsRegister(X86::FP0+Op0);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1250 bool KillsOp1 = MI->killsRegister(X86::FP0+Op1);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1251
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1252 // Make sure the first operand is on the top of stack, the other one can be
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1253 // anywhere.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1254 moveToTop(Op0, I);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1255
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1256 // Change from the pseudo instruction to the concrete instruction.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1257 MI->getOperand(0).setReg(getSTReg(Op1));
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1258 MI->RemoveOperand(1);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1259 MI->setDesc(TII->get(getConcreteOpcode(MI->getOpcode())));
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1260
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1261 // If any of the operands are killed by this instruction, free them.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1262 if (KillsOp0) freeStackSlotAfter(I, Op0);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1263 if (KillsOp1 && Op0 != Op1) freeStackSlotAfter(I, Op1);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1264 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1265
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1266 /// handleCondMovFP - Handle two address conditional move instructions. These
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1267 /// instructions move a st(i) register to st(0) iff a condition is true. These
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1268 /// instructions require that the first operand is at the top of the stack, but
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1269 /// otherwise don't modify the stack at all.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1270 void FPS::handleCondMovFP(MachineBasicBlock::iterator &I) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1271 MachineInstr *MI = I;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1272
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1273 unsigned Op0 = getFPReg(MI->getOperand(0));
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1274 unsigned Op1 = getFPReg(MI->getOperand(2));
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1275 bool KillsOp1 = MI->killsRegister(X86::FP0+Op1);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1276
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1277 // The first operand *must* be on the top of the stack.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1278 moveToTop(Op0, I);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1279
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1280 // Change the second operand to the stack register that the operand is in.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1281 // Change from the pseudo instruction to the concrete instruction.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1282 MI->RemoveOperand(0);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1283 MI->RemoveOperand(1);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1284 MI->getOperand(0).setReg(getSTReg(Op1));
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1285 MI->setDesc(TII->get(getConcreteOpcode(MI->getOpcode())));
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1286
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1287 // If we kill the second operand, make sure to pop it from the stack.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1288 if (Op0 != Op1 && KillsOp1) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1289 // Get this value off of the register stack.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1290 freeStackSlotAfter(I, Op1);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1291 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1292 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1293
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1294
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1295 /// handleSpecialFP - Handle special instructions which behave unlike other
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1296 /// floating point instructions. This is primarily intended for use by pseudo
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1297 /// instructions.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1298 ///
|
77
|
1299 void FPS::handleSpecialFP(MachineBasicBlock::iterator &Inst) {
|
|
1300 MachineInstr *MI = Inst;
|
|
1301
|
|
1302 if (MI->isCall()) {
|
|
1303 handleCall(Inst);
|
|
1304 return;
|
|
1305 }
|
|
1306
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1307 switch (MI->getOpcode()) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1308 default: llvm_unreachable("Unknown SpecialFP instruction!");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1309 case TargetOpcode::COPY: {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1310 // We handle three kinds of copies: FP <- FP, FP <- ST, and ST <- FP.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1311 const MachineOperand &MO1 = MI->getOperand(1);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1312 const MachineOperand &MO0 = MI->getOperand(0);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1313 bool KillsSrc = MI->killsRegister(MO1.getReg());
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1314
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1315 // FP <- FP copy.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1316 unsigned DstFP = getFPReg(MO0);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1317 unsigned SrcFP = getFPReg(MO1);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1318 assert(isLive(SrcFP) && "Cannot copy dead register");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1319 if (KillsSrc) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1320 // If the input operand is killed, we can just change the owner of the
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1321 // incoming stack slot into the result.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1322 unsigned Slot = getSlot(SrcFP);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1323 Stack[Slot] = DstFP;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1324 RegMap[DstFP] = Slot;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1325 } else {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1326 // For COPY we just duplicate the specified value to a new stack slot.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1327 // This could be made better, but would require substantial changes.
|
77
|
1328 duplicateToTop(SrcFP, DstFP, Inst);
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1329 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1330 break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1331 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1332
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1333 case TargetOpcode::IMPLICIT_DEF: {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1334 // All FP registers must be explicitly defined, so load a 0 instead.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1335 unsigned Reg = MI->getOperand(0).getReg() - X86::FP0;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1336 DEBUG(dbgs() << "Emitting LD_F0 for implicit FP" << Reg << '\n');
|
77
|
1337 BuildMI(*MBB, Inst, MI->getDebugLoc(), TII->get(X86::LD_F0));
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1338 pushReg(Reg);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1339 break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1340 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1341
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1342 case TargetOpcode::INLINEASM: {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1343 // The inline asm MachineInstr currently only *uses* FP registers for the
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1344 // 'f' constraint. These should be turned into the current ST(x) register
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1345 // in the machine instr.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1346 //
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1347 // There are special rules for x87 inline assembly. The compiler must know
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1348 // exactly how many registers are popped and pushed implicitly by the asm.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1349 // Otherwise it is not possible to restore the stack state after the inline
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1350 // asm.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1351 //
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1352 // There are 3 kinds of input operands:
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1353 //
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1354 // 1. Popped inputs. These must appear at the stack top in ST0-STn. A
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1355 // popped input operand must be in a fixed stack slot, and it is either
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1356 // tied to an output operand, or in the clobber list. The MI has ST use
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1357 // and def operands for these inputs.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1358 //
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1359 // 2. Fixed inputs. These inputs appear in fixed stack slots, but are
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1360 // preserved by the inline asm. The fixed stack slots must be STn-STm
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1361 // following the popped inputs. A fixed input operand cannot be tied to
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1362 // an output or appear in the clobber list. The MI has ST use operands
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1363 // and no defs for these inputs.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1364 //
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1365 // 3. Preserved inputs. These inputs use the "f" constraint which is
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1366 // represented as an FP register. The inline asm won't change these
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1367 // stack slots.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1368 //
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1369 // Outputs must be in ST registers, FP outputs are not allowed. Clobbered
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1370 // registers do not count as output operands. The inline asm changes the
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1371 // stack as if it popped all the popped inputs and then pushed all the
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1372 // output operands.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1373
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1374 // Scan the assembly for ST registers used, defined and clobbered. We can
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1375 // only tell clobbers from defs by looking at the asm descriptor.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1376 unsigned STUses = 0, STDefs = 0, STClobbers = 0, STDeadDefs = 0;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1377 unsigned NumOps = 0;
|
77
|
1378 SmallSet<unsigned, 1> FRegIdx;
|
|
1379 unsigned RCID;
|
|
1380
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1381 for (unsigned i = InlineAsm::MIOp_FirstOperand, e = MI->getNumOperands();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1382 i != e && MI->getOperand(i).isImm(); i += 1 + NumOps) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1383 unsigned Flags = MI->getOperand(i).getImm();
|
77
|
1384
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1385 NumOps = InlineAsm::getNumOperandRegisters(Flags);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1386 if (NumOps != 1)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1387 continue;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1388 const MachineOperand &MO = MI->getOperand(i + 1);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1389 if (!MO.isReg())
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1390 continue;
|
77
|
1391 unsigned STReg = MO.getReg() - X86::FP0;
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1392 if (STReg >= 8)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1393 continue;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1394
|
77
|
1395 // If the flag has a register class constraint, this must be an operand
|
|
1396 // with constraint "f". Record its index and continue.
|
|
1397 if (InlineAsm::hasRegClassConstraint(Flags, RCID)) {
|
|
1398 FRegIdx.insert(i + 1);
|
|
1399 continue;
|
|
1400 }
|
|
1401
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1402 switch (InlineAsm::getKind(Flags)) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1403 case InlineAsm::Kind_RegUse:
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1404 STUses |= (1u << STReg);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1405 break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1406 case InlineAsm::Kind_RegDef:
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1407 case InlineAsm::Kind_RegDefEarlyClobber:
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1408 STDefs |= (1u << STReg);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1409 if (MO.isDead())
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1410 STDeadDefs |= (1u << STReg);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1411 break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1412 case InlineAsm::Kind_Clobber:
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1413 STClobbers |= (1u << STReg);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1414 break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1415 default:
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1416 break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1417 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1418 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1419
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1420 if (STUses && !isMask_32(STUses))
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1421 MI->emitError("fixed input regs must be last on the x87 stack");
|
83
|
1422 unsigned NumSTUses = countTrailingOnes(STUses);
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1423
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1424 // Defs must be contiguous from the stack top. ST0-STn.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1425 if (STDefs && !isMask_32(STDefs)) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1426 MI->emitError("output regs must be last on the x87 stack");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1427 STDefs = NextPowerOf2(STDefs) - 1;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1428 }
|
83
|
1429 unsigned NumSTDefs = countTrailingOnes(STDefs);
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1430
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1431 // So must the clobbered stack slots. ST0-STm, m >= n.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1432 if (STClobbers && !isMask_32(STDefs | STClobbers))
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1433 MI->emitError("clobbers must be last on the x87 stack");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1434
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1435 // Popped inputs are the ones that are also clobbered or defined.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1436 unsigned STPopped = STUses & (STDefs | STClobbers);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1437 if (STPopped && !isMask_32(STPopped))
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1438 MI->emitError("implicitly popped regs must be last on the x87 stack");
|
83
|
1439 unsigned NumSTPopped = countTrailingOnes(STPopped);
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1440
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1441 DEBUG(dbgs() << "Asm uses " << NumSTUses << " fixed regs, pops "
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1442 << NumSTPopped << ", and defines " << NumSTDefs << " regs.\n");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1443
|
77
|
1444 #ifndef NDEBUG
|
|
1445 // If any input operand uses constraint "f", all output register
|
|
1446 // constraints must be early-clobber defs.
|
|
1447 for (unsigned I = 0, E = MI->getNumOperands(); I < E; ++I)
|
|
1448 if (FRegIdx.count(I)) {
|
|
1449 assert((1 << getFPReg(MI->getOperand(I)) & STDefs) == 0 &&
|
|
1450 "Operands with constraint \"f\" cannot overlap with defs");
|
|
1451 }
|
|
1452 #endif
|
|
1453
|
|
1454 // Collect all FP registers (register operands with constraints "t", "u",
|
|
1455 // and "f") to kill afer the instruction.
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1456 unsigned FPKills = ((1u << NumFPRegs) - 1) & ~0xff;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1457 for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1458 MachineOperand &Op = MI->getOperand(i);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1459 if (!Op.isReg() || Op.getReg() < X86::FP0 || Op.getReg() > X86::FP6)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1460 continue;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1461 unsigned FPReg = getFPReg(Op);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1462
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1463 // If we kill this operand, make sure to pop it from the stack after the
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1464 // asm. We just remember it for now, and pop them all off at the end in
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1465 // a batch.
|
77
|
1466 if (Op.isUse() && Op.isKill())
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1467 FPKills |= 1U << FPReg;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1468 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1469
|
77
|
1470 // Do not include registers that are implicitly popped by defs/clobbers.
|
|
1471 FPKills &= ~(STDefs | STClobbers);
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1472
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1473 // Now we can rearrange the live registers to match what was requested.
|
77
|
1474 unsigned char STUsesArray[8];
|
|
1475
|
|
1476 for (unsigned I = 0; I < NumSTUses; ++I)
|
|
1477 STUsesArray[I] = I;
|
|
1478
|
|
1479 shuffleStackTop(STUsesArray, NumSTUses, Inst);
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1480 DEBUG({dbgs() << "Before asm: "; dumpStack();});
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1481
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1482 // With the stack layout fixed, rewrite the FP registers.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1483 for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1484 MachineOperand &Op = MI->getOperand(i);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1485 if (!Op.isReg() || Op.getReg() < X86::FP0 || Op.getReg() > X86::FP6)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1486 continue;
|
77
|
1487
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1488 unsigned FPReg = getFPReg(Op);
|
77
|
1489
|
|
1490 if (FRegIdx.count(i))
|
|
1491 // Operand with constraint "f".
|
|
1492 Op.setReg(getSTReg(FPReg));
|
|
1493 else
|
|
1494 // Operand with a single register class constraint ("t" or "u").
|
|
1495 Op.setReg(X86::ST0 + FPReg);
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1496 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1497
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1498 // Simulate the inline asm popping its inputs and pushing its outputs.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1499 StackTop -= NumSTPopped;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1500
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1501 for (unsigned i = 0; i < NumSTDefs; ++i)
|
77
|
1502 pushReg(NumSTDefs - i - 1);
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1503
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1504 // If this asm kills any FP registers (is the last use of them) we must
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1505 // explicitly emit pop instructions for them. Do this now after the asm has
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1506 // executed so that the ST(x) numbers are not off (which would happen if we
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1507 // did this inline with operand rewriting).
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1508 //
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1509 // Note: this might be a non-optimal pop sequence. We might be able to do
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1510 // better by trying to pop in stack order or something.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1511 while (FPKills) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1512 unsigned FPReg = countTrailingZeros(FPKills);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1513 if (isLive(FPReg))
|
77
|
1514 freeStackSlotAfter(Inst, FPReg);
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1515 FPKills &= ~(1U << FPReg);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1516 }
|
77
|
1517
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1518 // Don't delete the inline asm!
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1519 return;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1520 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1521
|
77
|
1522 case X86::RETQ:
|
|
1523 case X86::RETL:
|
|
1524 case X86::RETIL:
|
|
1525 case X86::RETIQ:
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1526 // If RET has an FP register use operand, pass the first one in ST(0) and
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1527 // the second one in ST(1).
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1528
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1529 // Find the register operands.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1530 unsigned FirstFPRegOp = ~0U, SecondFPRegOp = ~0U;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1531 unsigned LiveMask = 0;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1532
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1533 for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1534 MachineOperand &Op = MI->getOperand(i);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1535 if (!Op.isReg() || Op.getReg() < X86::FP0 || Op.getReg() > X86::FP6)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1536 continue;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1537 // FP Register uses must be kills unless there are two uses of the same
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1538 // register, in which case only one will be a kill.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1539 assert(Op.isUse() &&
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1540 (Op.isKill() || // Marked kill.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1541 getFPReg(Op) == FirstFPRegOp || // Second instance.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1542 MI->killsRegister(Op.getReg())) && // Later use is marked kill.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1543 "Ret only defs operands, and values aren't live beyond it");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1544
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1545 if (FirstFPRegOp == ~0U)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1546 FirstFPRegOp = getFPReg(Op);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1547 else {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1548 assert(SecondFPRegOp == ~0U && "More than two fp operands!");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1549 SecondFPRegOp = getFPReg(Op);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1550 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1551 LiveMask |= (1 << getFPReg(Op));
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1552
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1553 // Remove the operand so that later passes don't see it.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1554 MI->RemoveOperand(i);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1555 --i, --e;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1556 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1557
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1558 // We may have been carrying spurious live-ins, so make sure only the returned
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1559 // registers are left live.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1560 adjustLiveRegs(LiveMask, MI);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1561 if (!LiveMask) return; // Quick check to see if any are possible.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1562
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1563 // There are only four possibilities here:
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1564 // 1) we are returning a single FP value. In this case, it has to be in
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1565 // ST(0) already, so just declare success by removing the value from the
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1566 // FP Stack.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1567 if (SecondFPRegOp == ~0U) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1568 // Assert that the top of stack contains the right FP register.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1569 assert(StackTop == 1 && FirstFPRegOp == getStackEntry(0) &&
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1570 "Top of stack not the right register for RET!");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1571
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1572 // Ok, everything is good, mark the value as not being on the stack
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1573 // anymore so that our assertion about the stack being empty at end of
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1574 // block doesn't fire.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1575 StackTop = 0;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1576 return;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1577 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1578
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1579 // Otherwise, we are returning two values:
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1580 // 2) If returning the same value for both, we only have one thing in the FP
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1581 // stack. Consider: RET FP1, FP1
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1582 if (StackTop == 1) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1583 assert(FirstFPRegOp == SecondFPRegOp && FirstFPRegOp == getStackEntry(0)&&
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1584 "Stack misconfiguration for RET!");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1585
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1586 // Duplicate the TOS so that we return it twice. Just pick some other FPx
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1587 // register to hold it.
|
77
|
1588 unsigned NewReg = ScratchFPReg;
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1589 duplicateToTop(FirstFPRegOp, NewReg, MI);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1590 FirstFPRegOp = NewReg;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1591 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1592
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1593 /// Okay we know we have two different FPx operands now:
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1594 assert(StackTop == 2 && "Must have two values live!");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1595
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1596 /// 3) If SecondFPRegOp is currently in ST(0) and FirstFPRegOp is currently
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1597 /// in ST(1). In this case, emit an fxch.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1598 if (getStackEntry(0) == SecondFPRegOp) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1599 assert(getStackEntry(1) == FirstFPRegOp && "Unknown regs live");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1600 moveToTop(FirstFPRegOp, MI);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1601 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1602
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1603 /// 4) Finally, FirstFPRegOp must be in ST(0) and SecondFPRegOp must be in
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1604 /// ST(1). Just remove both from our understanding of the stack and return.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1605 assert(getStackEntry(0) == FirstFPRegOp && "Unknown regs live");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1606 assert(getStackEntry(1) == SecondFPRegOp && "Unknown regs live");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1607 StackTop = 0;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1608 return;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1609 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1610
|
77
|
1611 Inst = MBB->erase(Inst); // Remove the pseudo instruction
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1612
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1613 // We want to leave I pointing to the previous instruction, but what if we
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1614 // just erased the first instruction?
|
77
|
1615 if (Inst == MBB->begin()) {
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1616 DEBUG(dbgs() << "Inserting dummy KILL\n");
|
77
|
1617 Inst = BuildMI(*MBB, Inst, DebugLoc(), TII->get(TargetOpcode::KILL));
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1618 } else
|
77
|
1619 --Inst;
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1620 }
|
77
|
1621
|
|
1622 void FPS::setKillFlags(MachineBasicBlock &MBB) const {
|
|
1623 const TargetRegisterInfo *TRI =
|
|
1624 MBB.getParent()->getSubtarget().getRegisterInfo();
|
|
1625 LivePhysRegs LPR(TRI);
|
|
1626
|
|
1627 LPR.addLiveOuts(&MBB);
|
|
1628
|
|
1629 for (MachineBasicBlock::reverse_iterator I = MBB.rbegin(), E = MBB.rend();
|
|
1630 I != E; ++I) {
|
|
1631 if (I->isDebugValue())
|
|
1632 continue;
|
|
1633
|
83
|
1634 std::bitset<8> Defs;
|
77
|
1635 SmallVector<MachineOperand *, 2> Uses;
|
|
1636 MachineInstr &MI = *I;
|
|
1637
|
|
1638 for (auto &MO : I->operands()) {
|
|
1639 if (!MO.isReg())
|
|
1640 continue;
|
|
1641
|
|
1642 unsigned Reg = MO.getReg() - X86::FP0;
|
|
1643
|
|
1644 if (Reg >= 8)
|
|
1645 continue;
|
|
1646
|
|
1647 if (MO.isDef()) {
|
|
1648 Defs.set(Reg);
|
|
1649 if (!LPR.contains(MO.getReg()))
|
|
1650 MO.setIsDead();
|
|
1651 } else
|
|
1652 Uses.push_back(&MO);
|
|
1653 }
|
|
1654
|
|
1655 for (auto *MO : Uses)
|
|
1656 if (Defs.test(getFPReg(*MO)) || !LPR.contains(MO->getReg()))
|
|
1657 MO->setIsKill();
|
|
1658
|
|
1659 LPR.stepBackward(MI);
|
|
1660 }
|
|
1661 }
|