annotate lib/Target/Sparc/SparcTargetMachine.cpp @ 83:60c9769439b8 LLVM3.7

LLVM 3.7
author Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
date Wed, 18 Feb 2015 14:55:36 +0900
parents 54457678186b
children afa8332a0e37
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1 //===-- SparcTargetMachine.cpp - Define TargetMachine for Sparc -----------===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9 //
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10 //
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11 //===----------------------------------------------------------------------===//
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12
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13 #include "SparcTargetMachine.h"
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14 #include "SparcTargetObjectFile.h"
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15 #include "Sparc.h"
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16 #include "llvm/CodeGen/Passes.h"
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17 #include "llvm/IR/LegacyPassManager.h"
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18 #include "llvm/Support/TargetRegistry.h"
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19 using namespace llvm;
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20
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21 extern "C" void LLVMInitializeSparcTarget() {
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22 // Register the target.
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23 RegisterTargetMachine<SparcV8TargetMachine> X(TheSparcTarget);
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24 RegisterTargetMachine<SparcV9TargetMachine> Y(TheSparcV9Target);
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25 }
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26
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27 static std::string computeDataLayout(bool is64Bit) {
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28 // Sparc is big endian.
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29 std::string Ret = "E-m:e";
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30
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31 // Some ABIs have 32bit pointers.
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32 if (!is64Bit)
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33 Ret += "-p:32:32";
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34
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35 // Alignments for 64 bit integers.
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36 Ret += "-i64:64";
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37
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38 // On SparcV9 128 floats are aligned to 128 bits, on others only to 64.
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39 // On SparcV9 registers can hold 64 or 32 bits, on others only 32.
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40 if (is64Bit)
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41 Ret += "-n32:64";
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42 else
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43 Ret += "-f128:64-n32";
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44
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45 if (is64Bit)
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46 Ret += "-S128";
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47 else
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48 Ret += "-S64";
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49
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50 return Ret;
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51 }
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52
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53 /// SparcTargetMachine ctor - Create an ILP32 architecture model
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54 ///
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55 SparcTargetMachine::SparcTargetMachine(const Target &T, StringRef TT,
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56 StringRef CPU, StringRef FS,
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57 const TargetOptions &Options,
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58 Reloc::Model RM, CodeModel::Model CM,
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59 CodeGenOpt::Level OL,
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60 bool is64bit)
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61 : LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL),
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62 TLOF(make_unique<SparcELFTargetObjectFile>()),
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63 DL(computeDataLayout(is64bit)),
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64 Subtarget(TT, CPU, FS, *this, is64bit) {
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65 initAsmInfo();
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66 }
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67
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68 SparcTargetMachine::~SparcTargetMachine() {}
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69
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70 namespace {
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71 /// Sparc Code Generator Pass Configuration Options.
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72 class SparcPassConfig : public TargetPassConfig {
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73 public:
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74 SparcPassConfig(SparcTargetMachine *TM, PassManagerBase &PM)
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75 : TargetPassConfig(TM, PM) {}
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76
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77 SparcTargetMachine &getSparcTargetMachine() const {
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78 return getTM<SparcTargetMachine>();
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79 }
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80
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81 void addIRPasses() override;
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82 bool addInstSelector() override;
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83 void addPreEmitPass() override;
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84 };
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85 } // namespace
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86
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87 TargetPassConfig *SparcTargetMachine::createPassConfig(PassManagerBase &PM) {
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88 return new SparcPassConfig(this, PM);
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89 }
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90
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91 void SparcPassConfig::addIRPasses() {
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92 addPass(createAtomicExpandPass(&getSparcTargetMachine()));
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93
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94 TargetPassConfig::addIRPasses();
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95 }
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96
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97 bool SparcPassConfig::addInstSelector() {
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98 addPass(createSparcISelDag(getSparcTargetMachine()));
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99 return false;
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100 }
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101
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102 void SparcPassConfig::addPreEmitPass(){
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103 addPass(createSparcDelaySlotFillerPass(getSparcTargetMachine()));
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104 }
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105
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106 void SparcV8TargetMachine::anchor() { }
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107
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108 SparcV8TargetMachine::SparcV8TargetMachine(const Target &T,
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109 StringRef TT, StringRef CPU,
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110 StringRef FS,
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111 const TargetOptions &Options,
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112 Reloc::Model RM,
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113 CodeModel::Model CM,
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114 CodeGenOpt::Level OL)
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115 : SparcTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL, false) {
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116 }
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117
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118 void SparcV9TargetMachine::anchor() { }
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119
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120 SparcV9TargetMachine::SparcV9TargetMachine(const Target &T,
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121 StringRef TT, StringRef CPU,
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122 StringRef FS,
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123 const TargetOptions &Options,
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124 Reloc::Model RM,
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125 CodeModel::Model CM,
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126 CodeGenOpt::Level OL)
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127 : SparcTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL, true) {
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128 }