X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FTarget%2FTargetMachine.cpp;h=342aa0175dfea4dedda0362a702cd99ce4a6463e;hb=73b43b9b549a75fb0015c825df68abd95705a67c;hp=c9e92fa854019c552f3ed2b5c53e9abe78f11fc2;hpb=d74ea2bbd8bb630331f35ead42d385249bd42af8;p=oota-llvm.git diff --git a/lib/Target/TargetMachine.cpp b/lib/Target/TargetMachine.cpp index c9e92fa8540..342aa0175df 100644 --- a/lib/Target/TargetMachine.cpp +++ b/lib/Target/TargetMachine.cpp @@ -2,8 +2,8 @@ // // The LLVM Compiler Infrastructure // -// This file was developed by the LLVM research group and is distributed under -// the University of Illinois Open Source License. See LICENSE.TXT for details. +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // @@ -11,9 +11,9 @@ // //===----------------------------------------------------------------------===// +#include "llvm/Target/TargetAsmInfo.h" #include "llvm/Target/TargetMachine.h" #include "llvm/Target/TargetOptions.h" -#include "llvm/Type.h" #include "llvm/Support/CommandLine.h" using namespace llvm; @@ -27,60 +27,135 @@ namespace llvm { bool NoExcessFPPrecision; bool UnsafeFPMath; bool FiniteOnlyFPMathOption; + bool HonorSignDependentRoundingFPMathOption; + bool UseSoftFloat; + bool NoZerosInBSS; + bool ExceptionHandling; + bool UnwindTablesMandatory; Reloc::Model RelocationModel; + CodeModel::Model CMModel; + bool PerformTailCallOpt; + bool OptimizeForSize; + bool RealignStack; + unsigned StackAlignment; } -namespace { - cl::opt PrintCode("print-machineinstrs", - cl::desc("Print generated machine code"), - cl::location(PrintMachineCode), cl::init(false)); - - cl::opt - DisableFPElim("disable-fp-elim", - cl::desc("Disable frame pointer elimination optimization"), - cl::location(NoFramePointerElim), - cl::init(false)); - cl::opt - DisableExcessPrecision("disable-excess-fp-precision", - cl::desc("Disable optimizations that may increase FP precision"), - cl::location(NoExcessFPPrecision), - cl::init(false)); - cl::opt - EnableUnsafeFPMath("enable-unsafe-fp-math", - cl::desc("Enable optimizations that may decrease FP precision"), - cl::location(UnsafeFPMath), - cl::init(false)); - cl::opt - EnableFiniteOnltFPMath("enable-finite-only-fp-math", - cl::desc("Enable optimizations that assumes non- NaNs / +-Infs"), - cl::location(FiniteOnlyFPMathOption), - cl::init(false)); - 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 PrintCode("print-machineinstrs", + cl::desc("Print generated machine code"), + cl::location(PrintMachineCode), cl::init(false)); + +static cl::opt +DisableFPElim("disable-fp-elim", + cl::desc("Disable frame pointer elimination optimization"), + cl::location(NoFramePointerElim), + cl::init(false)); +static cl::opt +DisableExcessPrecision("disable-excess-fp-precision", + cl::desc("Disable optimizations that may increase FP precision"), + cl::location(NoExcessFPPrecision), + cl::init(false)); +static cl::opt +EnableUnsafeFPMath("enable-unsafe-fp-math", + cl::desc("Enable optimizations that may decrease FP precision"), + 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), + cl::init(false)); +static cl::opt +EnableHonorSignDependentRoundingFPMath(cl::Hidden, + "enable-sign-dependent-rounding-fp-math", + cl::desc("Force codegen to assume rounding mode can change dynamically"), + cl::location(HonorSignDependentRoundingFPMathOption), + cl::init(false)); + +static cl::opt +GenerateSoftFloatCalls("soft-float", + cl::desc("Generate software floating point library calls"), + cl::location(UseSoftFloat), + cl::init(false)); +static cl::opt +DontPlaceZerosInBSS("nozero-initialized-in-bss", + cl::desc("Don't place zero-initialized symbols into bss section"), + 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), + cl::init(false)); +static cl::opt +EnableUnwindTables("unwind-tables", + cl::desc("Generate unwinding tables for all functions"), + cl::location(UnwindTablesMandatory), + 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), + cl::init(false)); +static cl::opt +EnableOptimizeForSize("optimize-size", + cl::desc("Optimize for size."), + cl::location(OptimizeForSize), + cl::init(false)); + +static cl::opt +EnableRealignStack("realign-stack", + cl::desc("Realign stack if needed"), + cl::location(RealignStack), + cl::init(true)); + +static cl::opt +OverrideStackAlignment("stack-alignment", + cl::desc("Override default stack alignment"), + cl::location(StackAlignment), + cl::init(0)); //--------------------------------------------------------------------------- // TargetMachine Class // -TargetMachine::TargetMachine(const std::string &name, const Module &M) - : Name(name) { -} - TargetMachine::~TargetMachine() { + delete AsmInfo; } /// getRelocationModel - Returns the code generation relocation model. The @@ -94,10 +169,28 @@ void TargetMachine::setRelocationModel(Reloc::Model Model) { RelocationModel = Model; } +/// 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; +} + namespace llvm { /// 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; + } +} +