X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FTarget%2FX86%2FX86Subtarget.h;h=66832b989be1eb74ed61a5489b4d5a31c10329ac;hb=a0de26ce34877fac86ef6d939d56bbebb3b4e14c;hp=5a322400ee9e5b976628eb790f5fe36cb81fc0ad;hpb=c6d59954d8b4bc63aa8e6333d902a3fffc774189;p=oota-llvm.git diff --git a/lib/Target/X86/X86Subtarget.h b/lib/Target/X86/X86Subtarget.h index 5a322400ee9..66832b989be 100644 --- a/lib/Target/X86/X86Subtarget.h +++ b/lib/Target/X86/X86Subtarget.h @@ -1,4 +1,4 @@ -//=====---- X86Subtarget.h - Define Subtarget for the X86 -----*- C++ -*--====// +//===-- X86Subtarget.h - Define Subtarget for the X86 ----------*- C++ -*--===// // // The LLVM Compiler Infrastructure // @@ -15,8 +15,8 @@ #define X86SUBTARGET_H #include "llvm/ADT/Triple.h" +#include "llvm/IR/CallingConv.h" #include "llvm/Target/TargetSubtargetInfo.h" -#include "llvm/CallingConv.h" #include #define GET_SUBTARGETINFO_HEADER @@ -49,6 +49,13 @@ protected: NoThreeDNow, ThreeDNow, ThreeDNowA }; + enum X86ProcFamilyEnum { + Others, IntelAtom + }; + + /// X86ProcFamily - X86 processor family: Intel Atom, and others + X86ProcFamilyEnum X86ProcFamily; + /// PICStyle - Which PIC style to use /// PICStyles::Style PICStyle; @@ -78,11 +85,11 @@ protected: /// HasAES - Target has AES instructions bool HasAES; - /// HasCLMUL - Target has carry-less multiplication - bool HasCLMUL; + /// HasPCLMUL - Target has carry-less multiplication + bool HasPCLMUL; - /// HasFMA3 - Target has 3-operand fused multiply-add - bool HasFMA3; + /// HasFMA - Target has 3-operand fused multiply-add + bool HasFMA; /// HasFMA4 - Target has 4-operand fused multiply-add bool HasFMA4; @@ -111,6 +118,21 @@ protected: /// HasBMI2 - Processor has BMI2 instructions. bool HasBMI2; + /// HasRTM - Processor has RTM instructions. + bool HasRTM; + + /// HasHLE - Processor has HLE. + bool HasHLE; + + /// HasADX - Processor has ADX instructions. + bool HasADX; + + /// HasPRFCHW - Processor has PRFCHW instructions. + bool HasPRFCHW; + + /// HasRDSEED - Processor has RDSEED instructions. + bool HasRDSEED; + /// IsBTMemSlow - True if BT (bit test) of memory instructions are slow. bool IsBTMemSlow; @@ -125,6 +147,28 @@ protected: /// this is true for most x86-64 chips, but not the first AMD chips. bool HasCmpxchg16b; + /// UseLeaForSP - True if the LEA instruction should be used for adjusting + /// the stack pointer. This is an optimization for Intel Atom processors. + bool UseLeaForSP; + + /// HasSlowDivide - True if smaller divides are significantly faster than + /// full divides and should be used when possible. + bool HasSlowDivide; + + /// PostRAScheduler - True if using post-register-allocation scheduler. + bool PostRAScheduler; + + /// PadShortFunctions - True if the short functions should be padded to prevent + /// a stall when returning too early. + bool PadShortFunctions; + + /// CallRegIndirect - True if the Calls with memory reference should be converted + /// to a register-based indirect call. + bool CallRegIndirect; + /// LEAUsesAG - True if the LEA instruction inputs have to be ready at + /// address generation (AG) time. + bool LEAUsesAG; + /// stackAlignment - The minimum alignment known to hold of the stack frame on /// entry to the function and which must be maintained by every function. unsigned stackAlignment; @@ -136,12 +180,17 @@ protected: /// TargetTriple - What processor and OS we're targeting. Triple TargetTriple; + /// Instruction itineraries for scheduling + InstrItineraryData InstrItins; + private: + /// StackAlignOverride - Override the stack alignment. + unsigned StackAlignOverride; + /// In64BitMode - True if compiling for 64-bit, false for 32-bit. bool In64BitMode; public: - /// This constructor initializes the data members to match that /// of the specified triple. /// @@ -166,7 +215,26 @@ public: /// instruction. void AutoDetectSubtargetFeatures(); - bool is64Bit() const { return In64BitMode; } + /// \brief Reset the features for the X86 target. + virtual void resetSubtargetFeatures(const MachineFunction *MF); +private: + void initializeEnvironment(); + void resetSubtargetFeatures(StringRef CPU, StringRef FS); +public: + /// Is this x86_64? (disregarding specific ABI / programming model) + bool is64Bit() const { + return In64BitMode; + } + + /// Is this x86_64 with the ILP32 programming model (x32 ABI)? + bool isTarget64BitILP32() const { + return In64BitMode && (TargetTriple.getEnvironment() == Triple::GNUX32); + } + + /// Is this x86_64 with the LP64 programming model (standard AMD64, no x32)? + bool isTarget64BitLP64() const { + return In64BitMode && (TargetTriple.getEnvironment() != Triple::GNUX32); + } PICStyles::Style getPICStyle() const { return PICStyle; } void setPICStyle(PICStyles::Style Style) { PICStyle = Style; } @@ -179,22 +247,19 @@ public: bool hasSSSE3() const { return X86SSELevel >= SSSE3; } bool hasSSE41() const { return X86SSELevel >= SSE41; } bool hasSSE42() const { return X86SSELevel >= SSE42; } + bool hasAVX() const { return X86SSELevel >= AVX; } + bool hasAVX2() const { return X86SSELevel >= AVX2; } + bool hasFp256() const { return hasAVX(); } + bool hasInt256() const { return hasAVX2(); } bool hasSSE4A() const { return HasSSE4A; } bool has3DNow() const { return X863DNowLevel >= ThreeDNow; } bool has3DNowA() const { return X863DNowLevel >= ThreeDNowA; } bool hasPOPCNT() const { return HasPOPCNT; } - bool hasAVX() const { return X86SSELevel >= AVX; } - bool hasAVX2() const { return X86SSELevel >= AVX2; } - bool hasXMM() const { return X86SSELevel >= SSE1; } - bool hasXMMInt() const { return X86SSELevel >= SSE2; } - bool hasSSE3orAVX() const { return X86SSELevel >= SSE3; } - bool hasSSSE3orAVX() const { return X86SSELevel >= SSSE3; } - bool hasSSE41orAVX() const { return X86SSELevel >= SSE41; } - bool hasSSE42orAVX() const { return X86SSELevel >= SSE42; } bool hasAES() const { return HasAES; } - bool hasCLMUL() const { return HasCLMUL; } - bool hasFMA3() const { return HasFMA3; } - bool hasFMA4() const { return HasFMA4; } + bool hasPCLMUL() const { return HasPCLMUL; } + bool hasFMA() const { return HasFMA; } + // FIXME: Favor FMA when both are enabled. Is this the right thing to do? + bool hasFMA4() const { return HasFMA4 && !HasFMA; } bool hasXOP() const { return HasXOP; } bool hasMOVBE() const { return HasMOVBE; } bool hasRDRAND() const { return HasRDRAND; } @@ -203,10 +268,22 @@ public: bool hasLZCNT() const { return HasLZCNT; } bool hasBMI() const { return HasBMI; } bool hasBMI2() const { return HasBMI2; } + bool hasRTM() const { return HasRTM; } + bool hasHLE() const { return HasHLE; } + bool hasADX() const { return HasADX; } + bool hasPRFCHW() const { return HasPRFCHW; } + bool hasRDSEED() const { return HasRDSEED; } bool isBTMemSlow() const { return IsBTMemSlow; } bool isUnalignedMemAccessFast() const { return IsUAMemFast; } bool hasVectorUAMem() const { return HasVectorUAMem; } bool hasCmpxchg16b() const { return HasCmpxchg16b; } + bool useLeaForSP() const { return UseLeaForSP; } + bool hasSlowDivide() const { return HasSlowDivide; } + bool padShortFunctions() const { return PadShortFunctions; } + bool callRegIndirect() const { return CallRegIndirect; } + bool LEAusesAG() const { return LEAUsesAG; } + + bool isAtom() const { return X86ProcFamily == IntelAtom; } const Triple &getTargetTriple() const { return TargetTriple; } @@ -217,41 +294,34 @@ public: bool isTargetSolaris() const { return TargetTriple.getOS() == Triple::Solaris; } - - // ELF is a reasonably sane default and the only other X86 targets we - // support are Darwin and Windows. Just use "not those". bool isTargetELF() const { - return !isTargetDarwin() && !isTargetWindows() && !isTargetCygMing(); + return (TargetTriple.getEnvironment() == Triple::ELF || + TargetTriple.isOSBinFormatELF()); } bool isTargetLinux() const { return TargetTriple.getOS() == Triple::Linux; } bool isTargetNaCl() const { - return TargetTriple.getOS() == Triple::NativeClient; + return TargetTriple.getOS() == Triple::NaCl; } bool isTargetNaCl32() const { return isTargetNaCl() && !is64Bit(); } bool isTargetNaCl64() const { return isTargetNaCl() && is64Bit(); } - bool isTargetWindows() const { return TargetTriple.getOS() == Triple::Win32; } bool isTargetMingw() const { return TargetTriple.getOS() == Triple::MinGW32; } bool isTargetCygwin() const { return TargetTriple.getOS() == Triple::Cygwin; } - bool isTargetCygMing() const { - return isTargetMingw() || isTargetCygwin(); - } - - /// isTargetCOFF - Return true if this is any COFF/Windows target variant. + bool isTargetCygMing() const { return TargetTriple.isOSCygMing(); } bool isTargetCOFF() const { - return isTargetMingw() || isTargetCygwin() || isTargetWindows(); + return (TargetTriple.getEnvironment() != Triple::ELF && + TargetTriple.isOSBinFormatCOFF()); } + bool isTargetEnvMacho() const { return TargetTriple.isEnvironmentMachO(); } bool isTargetWin64() const { // FIXME: x86_64-cygwin has not been released yet. - return In64BitMode && (isTargetCygMing() || isTargetWindows()); - } - - bool isTargetEnvMacho() const { - return isTargetDarwin() || (TargetTriple.getEnvironment() == Triple::MachO); + return In64BitMode && TargetTriple.isOSWindows(); } bool isTargetWin32() const { + // FIXME: Cygwin is included for isTargetWin64 -- should it be included + // here too? return !In64BitMode && (isTargetMingw() || isTargetWindows()); } @@ -291,12 +361,21 @@ public: /// memset with zero passed as the second argument. Otherwise it /// returns null. const char *getBZeroEntry() const; + + /// This function returns true if the target has sincos() routine in its + /// compiler runtime or math libraries. + bool hasSinCos() const; + + /// enablePostRAScheduler - run for Atom optimization. + bool enablePostRAScheduler(CodeGenOpt::Level OptLevel, + TargetSubtargetInfo::AntiDepBreakMode& Mode, + RegClassVector& CriticalPathRCs) const; + + bool postRAScheduler() const { return PostRAScheduler; } - /// getSpecialAddressLatency - For targets where it is beneficial to - /// backschedule instructions that compute addresses, return a value - /// indicating the number of scheduling cycles of backscheduling that - /// should be attempted. - unsigned getSpecialAddressLatency() const; + /// getInstrItins = Return the instruction itineraries based on the + /// subtarget selection. + const InstrItineraryData &getInstrItineraryData() const { return InstrItins; } }; } // End llvm namespace