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annotate lib/CodeGen/LLVMTargetMachine.cpp @ 77:54457678186b LLVM3.6

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LLVM 3.6
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Mon, 08 Sep 2014 22:06:00 +0900
parents 95c75e76d11b
children 60c9769439b8
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1 //===-- LLVMTargetMachine.cpp - Implement the LLVMTargetMachine class -----===//
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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 LLVMTargetMachine class.
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11 //
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12 //===----------------------------------------------------------------------===//
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13
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14 #include "llvm/Target/TargetMachine.h"
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15
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16 #include "llvm/Analysis/Passes.h"
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17 #include "llvm/CodeGen/AsmPrinter.h"
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18 #include "llvm/CodeGen/JumpInstrTables.h"
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19 #include "llvm/CodeGen/MachineFunctionAnalysis.h"
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20 #include "llvm/CodeGen/MachineModuleInfo.h"
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21 #include "llvm/CodeGen/Passes.h"
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22 #include "llvm/IR/IRPrintingPasses.h"
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23 #include "llvm/IR/Verifier.h"
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24 #include "llvm/MC/MCAsmInfo.h"
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25 #include "llvm/MC/MCContext.h"
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26 #include "llvm/MC/MCInstrInfo.h"
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27 #include "llvm/MC/MCStreamer.h"
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28 #include "llvm/MC/MCSubtargetInfo.h"
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29 #include "llvm/PassManager.h"
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30 #include "llvm/Support/CommandLine.h"
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31 #include "llvm/Support/ErrorHandling.h"
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32 #include "llvm/Support/FormattedStream.h"
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33 #include "llvm/Support/TargetRegistry.h"
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34 #include "llvm/Target/TargetInstrInfo.h"
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35 #include "llvm/Target/TargetLowering.h"
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36 #include "llvm/Target/TargetLoweringObjectFile.h"
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37 #include "llvm/Target/TargetOptions.h"
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38 #include "llvm/Target/TargetRegisterInfo.h"
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39 #include "llvm/Target/TargetSubtargetInfo.h"
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40 #include "llvm/Transforms/Scalar.h"
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41 using namespace llvm;
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42
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43 // Enable or disable FastISel. Both options are needed, because
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44 // FastISel is enabled by default with -fast, and we wish to be
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45 // able to enable or disable fast-isel independently from -O0.
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46 static cl::opt<cl::boolOrDefault>
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47 EnableFastISelOption("fast-isel", cl::Hidden,
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48 cl::desc("Enable the \"fast\" instruction selector"));
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49
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50 void LLVMTargetMachine::initAsmInfo() {
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51 MCAsmInfo *TmpAsmInfo = TheTarget.createMCAsmInfo(
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52 *getSubtargetImpl()->getRegisterInfo(), getTargetTriple());
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53 // TargetSelect.h moved to a different directory between LLVM 2.9 and 3.0,
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54 // and if the old one gets included then MCAsmInfo will be NULL and
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55 // we'll crash later.
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56 // Provide the user with a useful error message about what's wrong.
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57 assert(TmpAsmInfo && "MCAsmInfo not initialized. "
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58 "Make sure you include the correct TargetSelect.h"
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59 "and that InitializeAllTargetMCs() is being invoked!");
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60
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61 if (Options.DisableIntegratedAS)
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62 TmpAsmInfo->setUseIntegratedAssembler(false);
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63
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64 if (Options.CompressDebugSections)
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65 TmpAsmInfo->setCompressDebugSections(true);
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66
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67 AsmInfo = TmpAsmInfo;
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68 }
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69
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70 LLVMTargetMachine::LLVMTargetMachine(const Target &T, StringRef Triple,
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71 StringRef CPU, StringRef FS,
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72 TargetOptions Options,
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73 Reloc::Model RM, CodeModel::Model CM,
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74 CodeGenOpt::Level OL)
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75 : TargetMachine(T, Triple, CPU, FS, Options) {
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76 CodeGenInfo = T.createMCCodeGenInfo(Triple, RM, CM, OL);
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77 }
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78
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79 void LLVMTargetMachine::addAnalysisPasses(PassManagerBase &PM) {
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80 PM.add(createBasicTargetTransformInfoPass(this));
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81 }
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82
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83 /// addPassesToX helper drives creation and initialization of TargetPassConfig.
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84 static MCContext *addPassesToGenerateCode(LLVMTargetMachine *TM,
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85 PassManagerBase &PM,
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86 bool DisableVerify,
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87 AnalysisID StartAfter,
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88 AnalysisID StopAfter) {
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89
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90 // Add internal analysis passes from the target machine.
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91 TM->addAnalysisPasses(PM);
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92
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93 // Targets may override createPassConfig to provide a target-specific
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94 // subclass.
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95 TargetPassConfig *PassConfig = TM->createPassConfig(PM);
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96 PassConfig->setStartStopPasses(StartAfter, StopAfter);
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97
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98 // Set PassConfig options provided by TargetMachine.
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99 PassConfig->setDisableVerify(DisableVerify);
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100
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101 PM.add(PassConfig);
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102
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103 PassConfig->addIRPasses();
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104
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105 PassConfig->addCodeGenPrepare();
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106
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107 PassConfig->addPassesToHandleExceptions();
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108
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109 PassConfig->addISelPrepare();
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110
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111 // Install a MachineModuleInfo class, which is an immutable pass that holds
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112 // all the per-module stuff we're generating, including MCContext.
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113 MachineModuleInfo *MMI = new MachineModuleInfo(
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114 *TM->getMCAsmInfo(), *TM->getSubtargetImpl()->getRegisterInfo(),
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115 &TM->getSubtargetImpl()->getTargetLowering()->getObjFileLowering());
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116 PM.add(MMI);
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117
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118 // Set up a MachineFunction for the rest of CodeGen to work on.
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119 PM.add(new MachineFunctionAnalysis(*TM));
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120
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121 // Enable FastISel with -fast, but allow that to be overridden.
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122 if (EnableFastISelOption == cl::BOU_TRUE ||
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123 (TM->getOptLevel() == CodeGenOpt::None &&
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124 EnableFastISelOption != cl::BOU_FALSE))
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125 TM->setFastISel(true);
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126
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127 // Ask the target for an isel.
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128 if (PassConfig->addInstSelector())
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
129 return nullptr;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
130
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
131 PassConfig->addMachinePasses();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
132
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
133 PassConfig->setInitialized();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
134
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
135 return &MMI->getContext();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
136 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
137
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
138 bool LLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM,
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
139 formatted_raw_ostream &Out,
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
140 CodeGenFileType FileType,
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
141 bool DisableVerify,
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
142 AnalysisID StartAfter,
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
143 AnalysisID StopAfter) {
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
144 // Passes to handle jumptable function annotations. These can't be handled at
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
145 // JIT time, so we don't add them directly to addPassesToGenerateCode.
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
146 PM.add(createJumpInstrTableInfoPass());
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
147 PM.add(createJumpInstrTablesPass(Options.JTType));
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
148
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
149 // Add common CodeGen passes.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
150 MCContext *Context = addPassesToGenerateCode(this, PM, DisableVerify,
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
151 StartAfter, StopAfter);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
152 if (!Context)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
153 return true;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
154
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
155 if (StopAfter) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
156 // FIXME: The intent is that this should eventually write out a YAML file,
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
157 // containing the LLVM IR, the machine-level IR (when stopping after a
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
158 // machine-level pass), and whatever other information is needed to
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
159 // deserialize the code and resume compilation. For now, just write the
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
160 // LLVM IR.
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
161 PM.add(createPrintModulePass(Out));
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
162 return false;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
163 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
164
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
165 if (Options.MCOptions.MCSaveTempLabels)
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
166 Context->setAllowTemporaryLabels(false);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
167
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
168 const MCSubtargetInfo &STI = getSubtarget<MCSubtargetInfo>();
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
169 const MCAsmInfo &MAI = *getMCAsmInfo();
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
170 const MCRegisterInfo &MRI = *getSubtargetImpl()->getRegisterInfo();
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
171 const MCInstrInfo &MII = *getSubtargetImpl()->getInstrInfo();
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
172 std::unique_ptr<MCStreamer> AsmStreamer;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
173
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
174 switch (FileType) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
175 case CGFT_AssemblyFile: {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
176 MCInstPrinter *InstPrinter =
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
177 getTarget().createMCInstPrinter(MAI.getAssemblerDialect(), MAI,
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
178 MII, MRI, STI);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
179
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
180 // Create a code emitter if asked to show the encoding.
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
181 MCCodeEmitter *MCE = nullptr;
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
182 if (Options.MCOptions.ShowMCEncoding)
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
183 MCE = getTarget().createMCCodeEmitter(MII, MRI, STI, *Context);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
184
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
185 MCAsmBackend *MAB = getTarget().createMCAsmBackend(MRI, getTargetTriple(),
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
186 TargetCPU);
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
187 MCStreamer *S = getTarget().createAsmStreamer(
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
188 *Context, Out, Options.MCOptions.AsmVerbose,
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
189 Options.MCOptions.MCUseDwarfDirectory, InstPrinter, MCE, MAB,
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
190 Options.MCOptions.ShowMCInst);
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
191 AsmStreamer.reset(S);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
192 break;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
193 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
194 case CGFT_ObjectFile: {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
195 // Create the code emitter for the target if it exists. If not, .o file
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
196 // emission fails.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
197 MCCodeEmitter *MCE = getTarget().createMCCodeEmitter(MII, MRI, STI,
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
198 *Context);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
199 MCAsmBackend *MAB = getTarget().createMCAsmBackend(MRI, getTargetTriple(),
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
200 TargetCPU);
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
201 if (!MCE || !MAB)
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
202 return true;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
203
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
204 AsmStreamer.reset(getTarget().createMCObjectStreamer(
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
205 getTargetTriple(), *Context, *MAB, Out, MCE, STI,
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
206 Options.MCOptions.MCRelaxAll, Options.MCOptions.MCNoExecStack));
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
207 break;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
208 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
209 case CGFT_Null:
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
210 // The Null output is intended for use for performance analysis and testing,
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
211 // not real users.
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
212 AsmStreamer.reset(getTarget().createNullStreamer(*Context));
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
213 break;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
214 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
215
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
216 // Create the AsmPrinter, which takes ownership of AsmStreamer if successful.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
217 FunctionPass *Printer = getTarget().createAsmPrinter(*this, *AsmStreamer);
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
218 if (!Printer)
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
219 return true;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
220
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
221 // If successful, createAsmPrinter took ownership of AsmStreamer.
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
222 AsmStreamer.release();
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
223
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
224 PM.add(Printer);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
225
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
226 return false;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
227 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
228
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
229 /// addPassesToEmitMC - Add passes to the specified pass manager to get
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
230 /// machine code emitted with the MCJIT. This method returns true if machine
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
231 /// code is not supported. It fills the MCContext Ctx pointer which can be
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
232 /// used to build custom MCStreamer.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
233 ///
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
234 bool LLVMTargetMachine::addPassesToEmitMC(PassManagerBase &PM,
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
235 MCContext *&Ctx,
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
236 raw_ostream &Out,
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
237 bool DisableVerify) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
238 // Add common CodeGen passes.
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
239 Ctx = addPassesToGenerateCode(this, PM, DisableVerify, nullptr, nullptr);
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
240 if (!Ctx)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
241 return true;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
242
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
243 if (Options.MCOptions.MCSaveTempLabels)
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
244 Ctx->setAllowTemporaryLabels(false);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
245
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
246 // Create the code emitter for the target if it exists. If not, .o file
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
247 // emission fails.
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
248 const MCRegisterInfo &MRI = *getSubtargetImpl()->getRegisterInfo();
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
249 const MCSubtargetInfo &STI = getSubtarget<MCSubtargetInfo>();
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
250 MCCodeEmitter *MCE = getTarget().createMCCodeEmitter(
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
251 *getSubtargetImpl()->getInstrInfo(), MRI, STI, *Ctx);
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
252 MCAsmBackend *MAB = getTarget().createMCAsmBackend(MRI, getTargetTriple(),
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
253 TargetCPU);
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
254 if (!MCE || !MAB)
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
255 return true;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
256
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
257 std::unique_ptr<MCStreamer> AsmStreamer;
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
258 AsmStreamer.reset(getTarget().createMCObjectStreamer(
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259 getTargetTriple(), *Ctx, *MAB, Out, MCE, STI,
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260 Options.MCOptions.MCRelaxAll, Options.MCOptions.MCNoExecStack));
0
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261
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262 // Create the AsmPrinter, which takes ownership of AsmStreamer if successful.
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263 FunctionPass *Printer = getTarget().createAsmPrinter(*this, *AsmStreamer);
77
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264 if (!Printer)
0
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265 return true;
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266
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267 // If successful, createAsmPrinter took ownership of AsmStreamer.
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268 AsmStreamer.release();
0
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269
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270 PM.add(Printer);
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271
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272 return false; // success!
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273 }