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annotate lib/Target/MSP430/MSP430Subtarget.cpp @ 121:803732b1fca8

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LLVM 5.0
author kono
date Fri, 27 Oct 2017 17:07:41 +0900
parents afa8332a0e37
children c2174574ed3a
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1 //===-- MSP430Subtarget.cpp - MSP430 Subtarget Information ----------------===//
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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 // This file implements the MSP430 specific subclass of TargetSubtargetInfo.
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11 //
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12 //===----------------------------------------------------------------------===//
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13
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14 #include "MSP430Subtarget.h"
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15 #include "MSP430.h"
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16 #include "llvm/Support/TargetRegistry.h"
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17
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18 using namespace llvm;
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19
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20 #define DEBUG_TYPE "msp430-subtarget"
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21
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22 static cl::opt<MSP430Subtarget::HWMultEnum>
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23 HWMultModeOption("mhwmult", cl::Hidden,
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24 cl::desc("Hardware multiplier use mode for MSP430"),
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25 cl::init(MSP430Subtarget::NoHWMult),
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26 cl::values(
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27 clEnumValN(MSP430Subtarget::NoHWMult, "none",
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28 "Do not use hardware multiplier"),
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29 clEnumValN(MSP430Subtarget::HWMult16, "16bit",
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30 "Use 16-bit hardware multiplier"),
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31 clEnumValN(MSP430Subtarget::HWMult32, "32bit",
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32 "Use 32-bit hardware multiplier"),
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33 clEnumValN(MSP430Subtarget::HWMultF5, "f5series",
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34 "Use F5 series hardware multiplier")));
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35
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36 #define GET_SUBTARGETINFO_TARGET_DESC
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37 #define GET_SUBTARGETINFO_CTOR
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38 #include "MSP430GenSubtargetInfo.inc"
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39
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40 void MSP430Subtarget::anchor() { }
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42 MSP430Subtarget &
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43 MSP430Subtarget::initializeSubtargetDependencies(StringRef CPU, StringRef FS) {
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44 ExtendedInsts = false;
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45 HWMultMode = NoHWMult;
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46
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47 std::string CPUName = CPU;
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48 if (CPUName.empty())
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49 CPUName = "msp430";
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50
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51 ParseSubtargetFeatures(CPUName, FS);
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52
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53 if (HWMultModeOption != NoHWMult)
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54 HWMultMode = HWMultModeOption;
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56 return *this;
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57 }
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59 MSP430Subtarget::MSP430Subtarget(const Triple &TT, const std::string &CPU,
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60 const std::string &FS, const TargetMachine &TM)
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61 : MSP430GenSubtargetInfo(TT, CPU, FS), FrameLowering(),
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62 InstrInfo(initializeSubtargetDependencies(CPU, FS)), TLInfo(TM, *this) {}