X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FCodeGen%2FLLVMTargetMachine.cpp;h=fd242b3604508e0e77b3e5fb0d4c2d6c15e91f93;hb=276f40540766ad0cfadbf744e0eb58499f60238a;hp=db2a54fcad49be0c41761e42857cbfba7f31886f;hpb=08510b14d4fe5d9b1a979fbee8a7aad11dbc6cea;p=oota-llvm.git diff --git a/lib/CodeGen/LLVMTargetMachine.cpp b/lib/CodeGen/LLVMTargetMachine.cpp index db2a54fcad4..fd242b36045 100644 --- a/lib/CodeGen/LLVMTargetMachine.cpp +++ b/lib/CodeGen/LLVMTargetMachine.cpp @@ -11,30 +11,35 @@ // //===----------------------------------------------------------------------===// -#include "llvm/Transforms/Scalar.h" -#include "llvm/PassManager.h" -#include "llvm/Assembly/PrintModulePass.h" +#include "llvm/Target/TargetMachine.h" +#include "llvm/Analysis/JumpInstrTableInfo.h" +#include "llvm/Analysis/Passes.h" #include "llvm/CodeGen/AsmPrinter.h" -#include "llvm/CodeGen/Passes.h" +#include "llvm/CodeGen/BasicTTIImpl.h" +#include "llvm/CodeGen/ForwardControlFlowIntegrity.h" +#include "llvm/CodeGen/JumpInstrTables.h" #include "llvm/CodeGen/MachineFunctionAnalysis.h" #include "llvm/CodeGen/MachineModuleInfo.h" -#include "llvm/Target/TargetInstrInfo.h" -#include "llvm/Target/TargetLowering.h" -#include "llvm/Target/TargetLoweringObjectFile.h" -#include "llvm/Target/TargetMachine.h" -#include "llvm/Target/TargetOptions.h" -#include "llvm/Target/TargetSubtargetInfo.h" -#include "llvm/Target/TargetRegisterInfo.h" +#include "llvm/CodeGen/Passes.h" +#include "llvm/IR/IRPrintingPasses.h" +#include "llvm/IR/Verifier.h" #include "llvm/MC/MCAsmInfo.h" #include "llvm/MC/MCContext.h" #include "llvm/MC/MCInstrInfo.h" #include "llvm/MC/MCStreamer.h" #include "llvm/MC/MCSubtargetInfo.h" -#include "llvm/ADT/OwningPtr.h" +#include "llvm/PassManager.h" #include "llvm/Support/CommandLine.h" -#include "llvm/Support/FormattedStream.h" #include "llvm/Support/ErrorHandling.h" +#include "llvm/Support/FormattedStream.h" #include "llvm/Support/TargetRegistry.h" +#include "llvm/Target/TargetInstrInfo.h" +#include "llvm/Target/TargetLowering.h" +#include "llvm/Target/TargetLoweringObjectFile.h" +#include "llvm/Target/TargetOptions.h" +#include "llvm/Target/TargetRegisterInfo.h" +#include "llvm/Target/TargetSubtargetInfo.h" +#include "llvm/Transforms/Scalar.h" using namespace llvm; // Enable or disable FastISel. Both options are needed, because @@ -44,22 +49,24 @@ static cl::opt EnableFastISelOption("fast-isel", cl::Hidden, cl::desc("Enable the \"fast\" instruction selector")); -static cl::opt ShowMCEncoding("show-mc-encoding", cl::Hidden, - cl::desc("Show encoding in .s output")); -static cl::opt ShowMCInst("show-mc-inst", cl::Hidden, - cl::desc("Show instruction structure in .s output")); +void LLVMTargetMachine::initAsmInfo() { + MCAsmInfo *TmpAsmInfo = TheTarget.createMCAsmInfo( + *getSubtargetImpl()->getRegisterInfo(), getTargetTriple()); + // TargetSelect.h moved to a different directory between LLVM 2.9 and 3.0, + // and if the old one gets included then MCAsmInfo will be NULL and + // we'll crash later. + // Provide the user with a useful error message about what's wrong. + assert(TmpAsmInfo && "MCAsmInfo not initialized. " + "Make sure you include the correct TargetSelect.h" + "and that InitializeAllTargetMCs() is being invoked!"); -static cl::opt -AsmVerbose("asm-verbose", cl::desc("Add comments to directives."), - cl::init(cl::BOU_UNSET)); - -static bool getVerboseAsm() { - switch (AsmVerbose) { - case cl::BOU_UNSET: return TargetMachine::getAsmVerbosityDefault(); - case cl::BOU_TRUE: return true; - case cl::BOU_FALSE: return false; - } - llvm_unreachable("Invalid verbose asm state"); + if (Options.DisableIntegratedAS) + TmpAsmInfo->setUseIntegratedAssembler(false); + + if (Options.CompressDebugSections) + TmpAsmInfo->setCompressDebugSections(true); + + AsmInfo = TmpAsmInfo; } LLVMTargetMachine::LLVMTargetMachine(const Target &T, StringRef Triple, @@ -69,14 +76,10 @@ LLVMTargetMachine::LLVMTargetMachine(const Target &T, StringRef Triple, CodeGenOpt::Level OL) : TargetMachine(T, Triple, CPU, FS, Options) { CodeGenInfo = T.createMCCodeGenInfo(Triple, RM, CM, OL); - AsmInfo = T.createMCAsmInfo(Triple); - // TargetSelect.h moved to a different directory between LLVM 2.9 and 3.0, - // and if the old one gets included then MCAsmInfo will be NULL and - // we'll crash later. - // Provide the user with a useful error message about what's wrong. - assert(AsmInfo && "MCAsmInfo not initialized." - "Make sure you include the correct TargetSelect.h" - "and that InitializeAllTargetMCs() is being invoked!"); +} + +TargetTransformInfo LLVMTargetMachine::getTTI() { + return TargetTransformInfo(BasicTTIImpl(this)); } /// addPassesToX helper drives creation and initialization of TargetPassConfig. @@ -85,7 +88,12 @@ static MCContext *addPassesToGenerateCode(LLVMTargetMachine *TM, bool DisableVerify, AnalysisID StartAfter, AnalysisID StopAfter) { - // Targets may override createPassConfig to provide a target-specific sublass. + + // Add internal analysis passes from the target machine. + PM.add(createTargetTransformInfoWrapperPass(TM->getTargetIRAnalysis())); + + // Targets may override createPassConfig to provide a target-specific + // subclass. TargetPassConfig *PassConfig = TM->createPassConfig(PM); PassConfig->setStartStopPasses(StartAfter, StopAfter); @@ -104,11 +112,10 @@ static MCContext *addPassesToGenerateCode(LLVMTargetMachine *TM, // Install a MachineModuleInfo class, which is an immutable pass that holds // all the per-module stuff we're generating, including MCContext. - MachineModuleInfo *MMI = - new MachineModuleInfo(*TM->getMCAsmInfo(), *TM->getRegisterInfo(), - &TM->getTargetLowering()->getObjFileLowering()); + MachineModuleInfo *MMI = new MachineModuleInfo( + *TM->getMCAsmInfo(), *TM->getSubtargetImpl()->getRegisterInfo(), + &TM->getSubtargetImpl()->getTargetLowering()->getObjFileLowering()); PM.add(MMI); - MCContext *Context = &MMI->getContext(); // Return the MCContext by-ref. // Set up a MachineFunction for the rest of CodeGen to work on. PM.add(new MachineFunctionAnalysis(*TM)); @@ -121,13 +128,13 @@ static MCContext *addPassesToGenerateCode(LLVMTargetMachine *TM, // Ask the target for an isel. if (PassConfig->addInstSelector()) - return NULL; + return nullptr; PassConfig->addMachinePasses(); PassConfig->setInitialized(); - return Context; + return &MMI->getContext(); } bool LLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM, @@ -136,6 +143,16 @@ bool LLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM, bool DisableVerify, AnalysisID StartAfter, AnalysisID StopAfter) { + // Passes to handle jumptable function annotations. These can't be handled at + // JIT time, so we don't add them directly to addPassesToGenerateCode. + PM.add(createJumpInstrTableInfoPass( + getSubtargetImpl()->getInstrInfo()->getJumpInstrTableEntryBound())); + PM.add(createJumpInstrTablesPass(Options.JTType)); + if (Options.FCFI) + PM.add(createForwardControlFlowIntegrityPass( + Options.JTType, Options.CFIType, Options.CFIEnforcing, + Options.getCFIFuncName())); + // Add common CodeGen passes. MCContext *Context = addPassesToGenerateCode(this, PM, DisableVerify, StartAfter, StopAfter); @@ -148,104 +165,73 @@ bool LLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM, // machine-level pass), and whatever other information is needed to // deserialize the code and resume compilation. For now, just write the // LLVM IR. - PM.add(createPrintModulePass(&Out)); + PM.add(createPrintModulePass(Out)); return false; } - if (hasMCSaveTempLabels()) + if (Options.MCOptions.MCSaveTempLabels) Context->setAllowTemporaryLabels(false); - const MCAsmInfo &MAI = *getMCAsmInfo(); - const MCRegisterInfo &MRI = *getRegisterInfo(); const MCSubtargetInfo &STI = getSubtarget(); - OwningPtr AsmStreamer; + const MCAsmInfo &MAI = *getMCAsmInfo(); + const MCRegisterInfo &MRI = *getSubtargetImpl()->getRegisterInfo(); + const MCInstrInfo &MII = *getSubtargetImpl()->getInstrInfo(); + std::unique_ptr AsmStreamer; switch (FileType) { case CGFT_AssemblyFile: { MCInstPrinter *InstPrinter = getTarget().createMCInstPrinter(MAI.getAssemblerDialect(), MAI, - *getInstrInfo(), - Context->getRegisterInfo(), STI); + MII, MRI, STI); // Create a code emitter if asked to show the encoding. - MCCodeEmitter *MCE = 0; - MCAsmBackend *MAB = 0; - if (ShowMCEncoding) { - const MCSubtargetInfo &STI = getSubtarget(); - MCE = getTarget().createMCCodeEmitter(*getInstrInfo(), MRI, STI, - *Context); - MAB = getTarget().createMCAsmBackend(getTargetTriple(), TargetCPU); - } - - MCStreamer *S = getTarget().createAsmStreamer(*Context, Out, - getVerboseAsm(), - hasMCUseLoc(), - hasMCUseCFI(), - hasMCUseDwarfDirectory(), - InstPrinter, - MCE, MAB, - ShowMCInst); + MCCodeEmitter *MCE = nullptr; + if (Options.MCOptions.ShowMCEncoding) + MCE = getTarget().createMCCodeEmitter(MII, MRI, STI, *Context); + + MCAsmBackend *MAB = getTarget().createMCAsmBackend(MRI, getTargetTriple(), + TargetCPU); + MCStreamer *S = getTarget().createAsmStreamer( + *Context, Out, Options.MCOptions.AsmVerbose, + Options.MCOptions.MCUseDwarfDirectory, InstPrinter, MCE, MAB, + Options.MCOptions.ShowMCInst); AsmStreamer.reset(S); break; } case CGFT_ObjectFile: { // Create the code emitter for the target if it exists. If not, .o file // emission fails. - MCCodeEmitter *MCE = getTarget().createMCCodeEmitter(*getInstrInfo(), MRI, - STI, *Context); - MCAsmBackend *MAB = getTarget().createMCAsmBackend(getTargetTriple(), + MCCodeEmitter *MCE = getTarget().createMCCodeEmitter(MII, MRI, STI, + *Context); + MCAsmBackend *MAB = getTarget().createMCAsmBackend(MRI, getTargetTriple(), TargetCPU); - if (MCE == 0 || MAB == 0) + if (!MCE || !MAB) return true; - AsmStreamer.reset(getTarget().createMCObjectStreamer(getTargetTriple(), - *Context, *MAB, Out, - MCE, hasMCRelaxAll(), - hasMCNoExecStack())); - AsmStreamer.get()->InitSections(); + AsmStreamer.reset( + getTarget() + .createMCObjectStreamer(getTargetTriple(), *Context, *MAB, Out, MCE, + STI, Options.MCOptions.MCRelaxAll)); break; } case CGFT_Null: // The Null output is intended for use for performance analysis and testing, // not real users. - AsmStreamer.reset(createNullStreamer(*Context)); + AsmStreamer.reset(getTarget().createNullStreamer(*Context)); break; } // Create the AsmPrinter, which takes ownership of AsmStreamer if successful. - FunctionPass *Printer = getTarget().createAsmPrinter(*this, *AsmStreamer); - if (Printer == 0) + FunctionPass *Printer = + getTarget().createAsmPrinter(*this, std::move(AsmStreamer)); + if (!Printer) return true; - // If successful, createAsmPrinter took ownership of AsmStreamer. - AsmStreamer.take(); - PM.add(Printer); - PM.add(createGCInfoDeleter()); return false; } -/// addPassesToEmitMachineCode - Add passes to the specified pass manager to -/// get machine code emitted. This uses a JITCodeEmitter object to handle -/// actually outputting the machine code and resolving things like the address -/// of functions. This method should returns true if machine code emission is -/// not supported. -/// -bool LLVMTargetMachine::addPassesToEmitMachineCode(PassManagerBase &PM, - JITCodeEmitter &JCE, - bool DisableVerify) { - // Add common CodeGen passes. - MCContext *Context = addPassesToGenerateCode(this, PM, DisableVerify, 0, 0); - if (!Context) - return true; - - addCodeEmitter(PM, JCE); - PM.add(createGCInfoDeleter()); - - return false; // success! -} - /// addPassesToEmitMC - Add passes to the specified pass manager to get /// machine code emitted with the MCJIT. This method returns true if machine /// code is not supported. It fills the MCContext Ctx pointer which can be @@ -256,38 +242,34 @@ bool LLVMTargetMachine::addPassesToEmitMC(PassManagerBase &PM, raw_ostream &Out, bool DisableVerify) { // Add common CodeGen passes. - Ctx = addPassesToGenerateCode(this, PM, DisableVerify, 0, 0); + Ctx = addPassesToGenerateCode(this, PM, DisableVerify, nullptr, nullptr); if (!Ctx) return true; - if (hasMCSaveTempLabels()) + if (Options.MCOptions.MCSaveTempLabels) Ctx->setAllowTemporaryLabels(false); // Create the code emitter for the target if it exists. If not, .o file // emission fails. - const MCRegisterInfo &MRI = *getRegisterInfo(); + const MCRegisterInfo &MRI = *getSubtargetImpl()->getRegisterInfo(); const MCSubtargetInfo &STI = getSubtarget(); - MCCodeEmitter *MCE = getTarget().createMCCodeEmitter(*getInstrInfo(), MRI, - STI, *Ctx); - MCAsmBackend *MAB = getTarget().createMCAsmBackend(getTargetTriple(), TargetCPU); - if (MCE == 0 || MAB == 0) + MCCodeEmitter *MCE = getTarget().createMCCodeEmitter( + *getSubtargetImpl()->getInstrInfo(), MRI, STI, *Ctx); + MCAsmBackend *MAB = getTarget().createMCAsmBackend(MRI, getTargetTriple(), + TargetCPU); + if (!MCE || !MAB) return true; - OwningPtr AsmStreamer; - AsmStreamer.reset(getTarget().createMCObjectStreamer(getTargetTriple(), *Ctx, - *MAB, Out, MCE, - hasMCRelaxAll(), - hasMCNoExecStack())); - AsmStreamer.get()->InitSections(); + std::unique_ptr AsmStreamer(getTarget().createMCObjectStreamer( + getTargetTriple(), *Ctx, *MAB, Out, MCE, STI, + Options.MCOptions.MCRelaxAll)); // Create the AsmPrinter, which takes ownership of AsmStreamer if successful. - FunctionPass *Printer = getTarget().createAsmPrinter(*this, *AsmStreamer); - if (Printer == 0) + FunctionPass *Printer = + getTarget().createAsmPrinter(*this, std::move(AsmStreamer)); + if (!Printer) return true; - // If successful, createAsmPrinter took ownership of AsmStreamer. - AsmStreamer.take(); - PM.add(Printer); return false; // success!