X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FTarget%2FTargetMachine.cpp;h=49f1e4dfaae6c29e61d2a7de94e2d0b152b0d3b4;hb=2625f9b2e4388a957286063f6c7fe5406fd0ca7a;hp=7547614a717425d446f0ac5772b52eae0bd2bef5;hpb=c9ab2f39ceadefa4ac8c0c922c55a76c0d637a6e;p=oota-llvm.git diff --git a/lib/Target/TargetMachine.cpp b/lib/Target/TargetMachine.cpp index 7547614a717..49f1e4dfaae 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. // //===----------------------------------------------------------------------===// // @@ -27,76 +27,149 @@ 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; + unsigned StackAlignment; + bool RealignStack; + bool VerboseAsm; + bool DisableJumpTables; + bool StrongPHIElim; + bool DisableRedZone; } -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 - GenerateSoftFloatCalls("soft-float", - cl::desc("Generate software floating point library calls"), - cl::location(UseSoftFloat), - 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)); - cl::opt - DefCodeModel( - "code-model", - cl::desc("Choose relocation 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 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 +OverrideStackAlignment("stack-alignment", + cl::desc("Override default stack alignment"), + cl::location(StackAlignment), + cl::init(0)); + +static cl::opt +EnableRealignStack("realign-stack", + cl::desc("Realign stack if needed"), + cl::location(RealignStack), + cl::init(true)); + +static cl::opt +AsmVerbose("asm-verbose", cl::desc("Add comments to directives."), + cl::location(VerboseAsm), + cl::init(false)); + +static cl::opt +DisableSwitchTables(cl::Hidden, "disable-jump-tables", + cl::desc("Do not generate jump tables."), + cl::location(DisableJumpTables), + cl::init(false)); + +static cl::opt +EnableStrongPHIElim(cl::Hidden, "strong-phi-elim", + cl::desc("Use strong PHI elimination."), + cl::location(StrongPHIElim), + cl::init(false)); + +static cl::opt +DisableRedZoneOption("disable-red-zone", + cl::desc("Do not emit code that uses the red zone."), + cl::location(DisableRedZone), + cl::init(false)); //--------------------------------------------------------------------------- // TargetMachine Class @@ -134,5 +207,11 @@ namespace llvm { /// 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; + } }