X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FTarget%2FTargetMachine.cpp;h=fe8a7cebd0a0113e3f9b8a05b1a3be9fa256d876;hb=6b3ae4638bc5a3fb3bad286f96a1234b8a53053a;hp=fb95c52a999e4ae38fa1032574ce80b433fcc025;hpb=51b198af83cb0080c2709b04c129a3d774c07765;p=oota-llvm.git diff --git a/lib/Target/TargetMachine.cpp b/lib/Target/TargetMachine.cpp index fb95c52a999..fe8a7cebd0a 100644 --- a/lib/Target/TargetMachine.cpp +++ b/lib/Target/TargetMachine.cpp @@ -11,7 +11,9 @@ // //===----------------------------------------------------------------------===// -#include "llvm/Target/TargetAsmInfo.h" +#include "llvm/CodeGen/MachineFunction.h" +#include "llvm/CodeGen/MachineFrameInfo.h" +#include "llvm/MC/MCAsmInfo.h" #include "llvm/Target/TargetMachine.h" #include "llvm/Target/TargetOptions.h" #include "llvm/Support/CommandLine.h" @@ -25,24 +27,27 @@ namespace llvm { bool LessPreciseFPMADOption; bool PrintMachineCode; bool NoFramePointerElim; + bool NoFramePointerElimNonLeaf; bool NoExcessFPPrecision; bool UnsafeFPMath; - bool FiniteOnlyFPMathOption; + bool NoInfsFPMath; + bool NoNaNsFPMath; bool HonorSignDependentRoundingFPMathOption; bool UseSoftFloat; FloatABI::ABIType FloatABIType; bool NoImplicitFloat; bool NoZerosInBSS; - bool ExceptionHandling; - bool UnwindTablesMandatory; - Reloc::Model RelocationModel; - CodeModel::Model CMModel; - bool PerformTailCallOpt; - unsigned StackAlignment; + bool JITExceptionHandling; + bool JITEmitDebugInfo; + bool JITEmitDebugInfoToDisk; + bool GuaranteedTailCallOpt; + unsigned StackAlignmentOverride; bool RealignStack; bool DisableJumpTables; bool StrongPHIElim; + bool HasDivModLibcall; bool AsmVerbosityDefault(false); + bool EnableSegmentedStacks; } static cl::opt @@ -55,6 +60,11 @@ DisableFPElim("disable-fp-elim", cl::location(NoFramePointerElim), cl::init(false)); static cl::opt +DisableFPElimNonLeaf("disable-non-leaf-fp-elim", + cl::desc("Disable frame pointer elimination optimization for non-leaf funcs"), + cl::location(NoFramePointerElimNonLeaf), + cl::init(false)); +static cl::opt DisableExcessPrecision("disable-excess-fp-precision", cl::desc("Disable optimizations that may increase FP precision"), cl::location(NoExcessFPPrecision), @@ -70,9 +80,14 @@ EnableUnsafeFPMath("enable-unsafe-fp-math", cl::location(UnsafeFPMath), cl::init(false)); static cl::opt -EnableFiniteOnlyFPMath("enable-finite-only-fp-math", - cl::desc("Enable optimizations that assumes non- NaNs / +-Infs"), - cl::location(FiniteOnlyFPMathOption), +EnableNoInfsFPMath("enable-no-infs-fp-math", + cl::desc("Enable FP math optimizations that assume no +-Infs"), + cl::location(NoInfsFPMath), + cl::init(false)); +static cl::opt +EnableNoNaNsFPMath("enable-no-nans-fp-math", + cl::desc("Enable FP math optimizations that assume no NaNs"), + cl::location(NoNaNsFPMath), cl::init(false)); static cl::opt EnableHonorSignDependentRoundingFPMath("enable-sign-dependent-rounding-fp-math", @@ -104,57 +119,38 @@ DontPlaceZerosInBSS("nozero-initialized-in-bss", cl::location(NoZerosInBSS), cl::init(false)); static cl::opt -EnableExceptionHandling("enable-eh", - cl::desc("Emit DWARF exception handling (default if target supports)"), - cl::location(ExceptionHandling), +EnableJITExceptionHandling("jit-enable-eh", + cl::desc("Emit exception handling information"), + cl::location(JITExceptionHandling), cl::init(false)); +// In debug builds, make this default to true. +#ifdef NDEBUG +#define EMIT_DEBUG false +#else +#define EMIT_DEBUG true +#endif +static cl::opt +EmitJitDebugInfo("jit-emit-debug", + cl::desc("Emit debug information to debugger"), + cl::location(JITEmitDebugInfo), + cl::init(EMIT_DEBUG)); +#undef EMIT_DEBUG static cl::opt -EnableUnwindTables("unwind-tables", - cl::desc("Generate unwinding tables for all functions"), - cl::location(UnwindTablesMandatory), +EmitJitDebugInfoToDisk("jit-emit-debug-to-disk", + cl::Hidden, + cl::desc("Emit debug info objfiles to disk"), + cl::location(JITEmitDebugInfoToDisk), cl::init(false)); -static cl::opt -DefRelocationModel("relocation-model", - cl::desc("Choose relocation model"), - cl::location(RelocationModel), - cl::init(Reloc::Default), - cl::values( - clEnumValN(Reloc::Default, "default", - "Target default relocation model"), - clEnumValN(Reloc::Static, "static", - "Non-relocatable code"), - clEnumValN(Reloc::PIC_, "pic", - "Fully relocatable, position independent code"), - clEnumValN(Reloc::DynamicNoPIC, "dynamic-no-pic", - "Relocatable external references, non-relocatable code"), - clEnumValEnd)); -static cl::opt -DefCodeModel("code-model", - cl::desc("Choose code model"), - cl::location(CMModel), - cl::init(CodeModel::Default), - cl::values( - clEnumValN(CodeModel::Default, "default", - "Target default code model"), - clEnumValN(CodeModel::Small, "small", - "Small code model"), - clEnumValN(CodeModel::Kernel, "kernel", - "Kernel code model"), - clEnumValN(CodeModel::Medium, "medium", - "Medium code model"), - clEnumValN(CodeModel::Large, "large", - "Large code model"), - clEnumValEnd)); static cl::opt -EnablePerformTailCallOpt("tailcallopt", - cl::desc("Turn on tail call optimization."), - cl::location(PerformTailCallOpt), +EnableGuaranteedTailCallOpt("tailcallopt", + cl::desc("Turn fastcc calls into tail calls by (potentially) changing ABI."), + cl::location(GuaranteedTailCallOpt), cl::init(false)); static cl::opt OverrideStackAlignment("stack-alignment", cl::desc("Override default stack alignment"), - cl::location(StackAlignment), + cl::location(StackAlignmentOverride), cl::init(0)); static cl::opt EnableRealignStack("realign-stack", @@ -171,13 +167,37 @@ EnableStrongPHIElim(cl::Hidden, "strong-phi-elim", cl::desc("Use strong PHI elimination."), cl::location(StrongPHIElim), cl::init(false)); - +static cl::opt +TrapFuncName("trap-func", cl::Hidden, + cl::desc("Emit a call to trap function rather than a trap instruction"), + cl::init("")); +static cl::opt +DataSections("fdata-sections", + cl::desc("Emit data into separate sections"), + cl::init(false)); +static cl::opt +FunctionSections("ffunction-sections", + cl::desc("Emit functions into separate sections"), + cl::init(false)); +static cl::opt +SegmentedStacks("segmented-stacks", + cl::desc("Use segmented stacks if possible."), + cl::location(EnableSegmentedStacks), + cl::init(false)); + //--------------------------------------------------------------------------- // TargetMachine Class // -TargetMachine::TargetMachine(const Target &T) - : TheTarget(T), AsmInfo(0) { +TargetMachine::TargetMachine(const Target &T, + StringRef TT, StringRef CPU, StringRef FS) + : TheTarget(T), TargetTriple(TT), TargetCPU(CPU), TargetFS(FS), + CodeGenInfo(0), AsmInfo(0), + MCRelaxAll(false), + MCNoExecStack(false), + MCSaveTempLabels(false), + MCUseLoc(true), + MCUseCFI(true) { // Typically it will be subtargets that will adjust FloatABIType from Default // to Soft or Hard. if (UseSoftFloat) @@ -185,29 +205,24 @@ TargetMachine::TargetMachine(const Target &T) } TargetMachine::~TargetMachine() { + delete CodeGenInfo; delete AsmInfo; } /// getRelocationModel - Returns the code generation relocation model. The /// choices are static, PIC, and dynamic-no-pic, and target default. -Reloc::Model TargetMachine::getRelocationModel() { - return RelocationModel; -} - -/// setRelocationModel - Sets the code generation relocation model. -void TargetMachine::setRelocationModel(Reloc::Model Model) { - RelocationModel = Model; +Reloc::Model TargetMachine::getRelocationModel() const { + if (!CodeGenInfo) + return Reloc::Default; + return CodeGenInfo->getRelocationModel(); } /// getCodeModel - Returns the code model. The choices are small, kernel, /// medium, large, and target default. -CodeModel::Model TargetMachine::getCodeModel() { - return CMModel; -} - -/// setCodeModel - Sets the code model. -void TargetMachine::setCodeModel(CodeModel::Model Model) { - CMModel = Model; +CodeModel::Model TargetMachine::getCodeModel() const { + if (!CodeGenInfo) + return CodeModel::Default; + return CodeGenInfo->getCodeModel(); } bool TargetMachine::getAsmVerbosityDefault() { @@ -218,23 +233,52 @@ void TargetMachine::setAsmVerbosityDefault(bool V) { AsmVerbosityDefault = V; } +bool TargetMachine::getFunctionSections() { + return FunctionSections; +} + +bool TargetMachine::getDataSections() { + return DataSections; +} + +void TargetMachine::setFunctionSections(bool V) { + FunctionSections = V; +} + +void TargetMachine::setDataSections(bool V) { + DataSections = V; +} + namespace llvm { + /// DisableFramePointerElim - This returns true if frame pointer elimination + /// optimization should be disabled for the given machine function. + bool DisableFramePointerElim(const MachineFunction &MF) { + // Check to see if we should eliminate non-leaf frame pointers and then + // check to see if we should eliminate all frame pointers. + if (NoFramePointerElimNonLeaf && !NoFramePointerElim) { + const MachineFrameInfo *MFI = MF.getFrameInfo(); + return MFI->hasCalls(); + } + + return NoFramePointerElim; + } + /// LessPreciseFPMAD - This flag return true when -enable-fp-mad option /// is specified on the command line. When this flag is off(default), the /// code generator is not allowed to generate mad (multiply add) if the /// result is "less precise" than doing those operations individually. bool LessPreciseFPMAD() { return UnsafeFPMath || LessPreciseFPMADOption; } - /// FiniteOnlyFPMath - This returns true when the -enable-finite-only-fp-math - /// option is specified on the command line. If this returns false (default), - /// the code generator is not allowed to assume that FP arithmetic arguments - /// and results are never NaNs or +-Infs. - bool FiniteOnlyFPMath() { return UnsafeFPMath || FiniteOnlyFPMathOption; } - /// HonorSignDependentRoundingFPMath - Return true if the codegen must assume /// that the rounding mode of the FPU can change from its default. bool HonorSignDependentRoundingFPMath() { return !UnsafeFPMath && HonorSignDependentRoundingFPMathOption; } -} + /// getTrapFunctionName - If this returns a non-empty string, this means isel + /// should lower Intrinsic::trap to a call to the specified function name + /// instead of an ISD::TRAP node. + StringRef getTrapFunctionName() { + return TrapFuncName; + } +}