X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FTarget%2FTargetOptions.h;h=d52cb60cf108fd5a78d5a6e3bf2e213b47e5ccd8;hb=00552e3875ee5f382db6c98286a241a7d0efe1b8;hp=188395968bb56db7c5894dd57567e2b4d1fc0ff0;hpb=d6af41b2eb87a1f822932aa19b4a9f6039de11fd;p=oota-llvm.git diff --git a/include/llvm/Target/TargetOptions.h b/include/llvm/Target/TargetOptions.h index 188395968bb..d52cb60cf10 100644 --- a/include/llvm/Target/TargetOptions.h +++ b/include/llvm/Target/TargetOptions.h @@ -15,19 +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. + Default, // Target-specific (either soft or hard depending on triple, etc). + Soft, // Soft float. + Hard // Hard float. }; } @@ -39,33 +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), + : PrintMachineCode(false), LessPreciseFPMADOption(false), UnsafeFPMath(false), NoInfsFPMath(false), NoNaNsFPMath(false), - HonorSignDependentRoundingFPMathOption(false), UseSoftFloat(false), - NoZerosInBSS(false), JITEmitDebugInfo(false), - JITEmitDebugInfoToDisk(false), GuaranteedTailCallOpt(false), - DisableTailCalls(false), StackAlignmentOverride(0), + HonorSignDependentRoundingFPMathOption(false), + NoZerosInBSS(false), + GuaranteedTailCallOpt(false), + StackAlignmentOverride(0), EnableFastISel(false), PositionIndependentExecutable(false), - UseInitArray(false), - DisableIntegratedAS(false), CompressDebugSections(false), - TrapUnreachable(false), - TrapFuncName(""), FloatABIType(FloatABI::Default), - AllowFPOpFusion(FPOpFusion::Standard) {} + 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; - /// DisableFramePointerElim - This returns true if frame pointer elimination /// optimization should be disabled for the given machine function. bool DisableFramePointerElim(const MachineFunction &MF) const; @@ -108,26 +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; - /// 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 @@ -136,10 +137,6 @@ 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; @@ -164,21 +161,23 @@ namespace llvm { /// 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; - /// 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; - /// 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. @@ -199,6 +198,17 @@ namespace llvm { /// 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; }; @@ -214,20 +224,18 @@ inline bool operator==(const TargetOptions &LHS, ARE_EQUAL(NoInfsFPMath) && ARE_EQUAL(NoNaNsFPMath) && ARE_EQUAL(HonorSignDependentRoundingFPMathOption) && - ARE_EQUAL(UseSoftFloat) && ARE_EQUAL(NoZerosInBSS) && - ARE_EQUAL(JITEmitDebugInfo) && - ARE_EQUAL(JITEmitDebugInfoToDisk) && ARE_EQUAL(GuaranteedTailCallOpt) && - ARE_EQUAL(DisableTailCalls) && ARE_EQUAL(StackAlignmentOverride) && ARE_EQUAL(EnableFastISel) && ARE_EQUAL(PositionIndependentExecutable) && ARE_EQUAL(UseInitArray) && ARE_EQUAL(TrapUnreachable) && - ARE_EQUAL(TrapFuncName) && ARE_EQUAL(FloatABIType) && ARE_EQUAL(AllowFPOpFusion) && + ARE_EQUAL(Reciprocals) && + ARE_EQUAL(JTType) && + ARE_EQUAL(ThreadModel) && ARE_EQUAL(MCOptions); #undef ARE_EQUAL }