X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FTarget%2FTargetOptions.h;h=d52cb60cf108fd5a78d5a6e3bf2e213b47e5ccd8;hb=00552e3875ee5f382db6c98286a241a7d0efe1b8;hp=3a1809a80a0d8f24bfc770343dbfa11d8f4a5e06;hpb=e0231413225cf47aaf3238bf21afd0d59025028d;p=oota-llvm.git diff --git a/include/llvm/Target/TargetOptions.h b/include/llvm/Target/TargetOptions.h index 3a1809a80a0..d52cb60cf10 100644 --- a/include/llvm/Target/TargetOptions.h +++ b/include/llvm/Target/TargetOptions.h @@ -15,18 +15,20 @@ #ifndef LLVM_TARGET_TARGETOPTIONS_H #define LLVM_TARGET_TARGETOPTIONS_H +#include "llvm/Target/TargetRecip.h" +#include "llvm/MC/MCTargetOptions.h" #include namespace llvm { class MachineFunction; + class Module; class StringRef; - // Possible float ABI settings. Used with FloatABIType in TargetOptions.h. namespace FloatABI { enum ABIType { Default, // Target-specific (either soft or hard depending on triple, etc). - Soft, // Soft float. - Hard // Hard float. + Soft, // Soft float. + Hard // Hard float. }; } @@ -38,39 +40,48 @@ namespace llvm { }; } + namespace JumpTable { + enum JumpTableType { + Single, // Use a single table for all indirect jumptable calls. + Arity, // Use one table per number of function parameters. + Simplified, // Use one table per function type, with types projected + // into 4 types: pointer to non-function, struct, + // primitive, and function pointer. + Full // Use one table per unique function type + }; + } + + namespace ThreadModel { + enum Model { + POSIX, // POSIX Threads + Single // Single Threaded Environment + }; + } + class TargetOptions { public: TargetOptions() - : PrintMachineCode(false), NoFramePointerElim(false), - NoFramePointerElimNonLeaf(false), LessPreciseFPMADOption(false), - UnsafeFPMath(false), NoInfsFPMath(false), - NoNaNsFPMath(false), HonorSignDependentRoundingFPMathOption(false), - UseSoftFloat(false), NoZerosInBSS(false), JITExceptionHandling(false), - JITEmitDebugInfo(false), JITEmitDebugInfoToDisk(false), - GuaranteedTailCallOpt(false), DisableTailCalls(false), - StackAlignmentOverride(0), RealignStack(true), - DisableJumpTables(false), EnableFastISel(false), - PositionIndependentExecutable(false), EnableSegmentedStacks(false), - UseInitArray(false), TrapFuncName(""), FloatABIType(FloatABI::Default), - AllowFPOpFusion(FPOpFusion::Standard) - {} + : PrintMachineCode(false), + LessPreciseFPMADOption(false), UnsafeFPMath(false), + NoInfsFPMath(false), NoNaNsFPMath(false), + HonorSignDependentRoundingFPMathOption(false), + NoZerosInBSS(false), + GuaranteedTailCallOpt(false), + StackAlignmentOverride(0), + EnableFastISel(false), PositionIndependentExecutable(false), + UseInitArray(false), DisableIntegratedAS(false), + CompressDebugSections(false), FunctionSections(false), + DataSections(false), UniqueSectionNames(true), TrapUnreachable(false), + FloatABIType(FloatABI::Default), + AllowFPOpFusion(FPOpFusion::Standard), Reciprocals(TargetRecip()), + JTType(JumpTable::Single), + ThreadModel(ThreadModel::POSIX) {} /// PrintMachineCode - This flag is enabled when the -print-machineinstrs /// option is specified on the command line, and should enable debugging /// output from the code generator. unsigned PrintMachineCode : 1; - /// NoFramePointerElim - This flag is enabled when the -disable-fp-elim is - /// specified on the command line. If the target supports the frame pointer - /// elimination optimization, this option should disable it. - unsigned NoFramePointerElim : 1; - - /// NoFramePointerElimNonLeaf - This flag is enabled when the - /// -disable-non-leaf-fp-elim is specified on the command line. If the - /// target supports the frame pointer elimination optimization, this option - /// should disable it for non-leaf functions. - unsigned NoFramePointerElimNonLeaf : 1; - /// DisableFramePointerElim - This returns true if frame pointer elimination /// optimization should be disabled for the given machine function. bool DisableFramePointerElim(const MachineFunction &MF) const; @@ -113,30 +124,11 @@ namespace llvm { unsigned HonorSignDependentRoundingFPMathOption : 1; bool HonorSignDependentRoundingFPMath() const; - /// UseSoftFloat - This flag is enabled when the -soft-float flag is - /// specified on the command line. When this flag is on, the code generator - /// will generate libcalls to the software floating point library instead of - /// target FP instructions. - unsigned UseSoftFloat : 1; - /// NoZerosInBSS - By default some codegens place zero-initialized data to /// .bss section. This flag disables such behaviour (necessary, e.g. for /// crt*.o compiling). unsigned NoZerosInBSS : 1; - /// JITExceptionHandling - This flag indicates that the JIT should emit - /// exception handling information. - unsigned JITExceptionHandling : 1; - - /// JITEmitDebugInfo - This flag indicates that the JIT should try to emit - /// debug information and notify a debugger about it. - unsigned JITEmitDebugInfo : 1; - - /// JITEmitDebugInfoToDisk - This flag indicates that the JIT should write - /// the object files generated by the JITEmitDebugInfo flag to disk. This - /// flag is hidden and is only for debugging the debug info. - unsigned JITEmitDebugInfoToDisk : 1; - /// GuaranteedTailCallOpt - This flag is enabled when -tailcallopt is /// specified on the commandline. When the flag is on, participating targets /// will perform tail call optimization on all calls which use the fastcc @@ -145,21 +137,9 @@ namespace llvm { /// as their parent function, etc.), using an alternate ABI if necessary. unsigned GuaranteedTailCallOpt : 1; - /// DisableTailCalls - This flag controls whether we will use tail calls. - /// Disabling them may be useful to maintain a correct call stack. - unsigned DisableTailCalls : 1; - /// StackAlignmentOverride - Override default stack alignment for target. unsigned StackAlignmentOverride; - /// RealignStack - This flag indicates whether the stack should be - /// automatically realigned, if needed. - unsigned RealignStack : 1; - - /// DisableJumpTables - This flag indicates jump tables should not be - /// generated. - unsigned DisableJumpTables : 1; - /// EnableFastISel - This flag enables fast-path instruction selection /// which trades away generated code quality in favor of reducing /// compile time. @@ -171,24 +151,33 @@ namespace llvm { /// if the relocation model is anything other than PIC. unsigned PositionIndependentExecutable : 1; - unsigned EnableSegmentedStacks : 1; - /// UseInitArray - Use .init_array instead of .ctors for static /// constructors. unsigned UseInitArray : 1; - /// 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. - std::string TrapFuncName; - StringRef getTrapFunctionName() const; + /// Disable the integrated assembler. + unsigned DisableIntegratedAS : 1; + + /// Compress DWARF debug sections. + unsigned CompressDebugSections : 1; + + /// Emit functions into separate sections. + unsigned FunctionSections : 1; + + /// Emit data into separate sections. + unsigned DataSections : 1; + + unsigned UniqueSectionNames : 1; + + /// Emit target-specific trap instruction for 'unreachable' IR instructions. + unsigned TrapUnreachable : 1; /// FloatABIType - This setting is set by -float-abi=xxx option is specfied /// on the command line. This setting may either be Default, Soft, or Hard. /// Default selects the target's default behavior. Soft selects the ABI for - /// UseSoftFloat, but does not indicate that FP hardware may not be used. - /// Such a combination is unfortunately popular (e.g. arm-apple-darwin). - /// Hard presumes that the normal FP ABI is used. + /// software floating point, but does not indicate that FP hardware may not + /// be used. Such a combination is unfortunately popular (e.g. + /// arm-apple-darwin). Hard presumes that the normal FP ABI is used. FloatABI::ABIType FloatABIType; /// AllowFPOpFusion - This flag is set by the -fuse-fp-ops=xxx option. @@ -203,13 +192,59 @@ namespace llvm { /// Strict mode - allow fusion only if/when it can be proven that the excess /// precision won't effect the result. /// - /// Note: This option only controls formation of fused ops by the optimizers. - /// Fused operations that are explicitly specified (e.g. FMA via the - /// llvm.fma.* intrinsic) will always be honored, regardless of the value of - /// this option. + /// Note: This option only controls formation of fused ops by the + /// optimizers. Fused operations that are explicitly specified (e.g. FMA + /// via the llvm.fma.* intrinsic) will always be honored, regardless of + /// the value of this option. FPOpFusion::FPOpFusionMode AllowFPOpFusion; + /// This class encapsulates options for reciprocal-estimate code generation. + TargetRecip Reciprocals; + + /// JTType - This flag specifies the type of jump-instruction table to + /// create for functions that have the jumptable attribute. + JumpTable::JumpTableType JTType; + + /// ThreadModel - This flag specifies the type of threading model to assume + /// for things like atomics + ThreadModel::Model ThreadModel; + + /// Machine level options. + MCTargetOptions MCOptions; }; + +// Comparison operators: + + +inline bool operator==(const TargetOptions &LHS, + const TargetOptions &RHS) { +#define ARE_EQUAL(X) LHS.X == RHS.X + return + ARE_EQUAL(UnsafeFPMath) && + ARE_EQUAL(NoInfsFPMath) && + ARE_EQUAL(NoNaNsFPMath) && + ARE_EQUAL(HonorSignDependentRoundingFPMathOption) && + ARE_EQUAL(NoZerosInBSS) && + ARE_EQUAL(GuaranteedTailCallOpt) && + ARE_EQUAL(StackAlignmentOverride) && + ARE_EQUAL(EnableFastISel) && + ARE_EQUAL(PositionIndependentExecutable) && + ARE_EQUAL(UseInitArray) && + ARE_EQUAL(TrapUnreachable) && + ARE_EQUAL(FloatABIType) && + ARE_EQUAL(AllowFPOpFusion) && + ARE_EQUAL(Reciprocals) && + ARE_EQUAL(JTType) && + ARE_EQUAL(ThreadModel) && + ARE_EQUAL(MCOptions); +#undef ARE_EQUAL +} + +inline bool operator!=(const TargetOptions &LHS, + const TargetOptions &RHS) { + return !(LHS == RHS); +} + } // End llvm namespace #endif