-//=====---- X86Subtarget.h - Define Subtarget for the X86 -----*- C++ -*--====//
+//===-- X86Subtarget.h - Define Subtarget for the X86 ----------*- C++ -*--===//
//
// The LLVM Compiler Infrastructure
//
#define X86SUBTARGET_H
#include "llvm/ADT/Triple.h"
+#include "llvm/IR/CallingConv.h"
#include "llvm/Target/TargetSubtargetInfo.h"
-#include "llvm/CallingConv.h"
#include <string>
#define GET_SUBTARGETINFO_HEADER
};
}
-class X86Subtarget : public X86GenSubtargetInfo {
+class X86Subtarget final : public X86GenSubtargetInfo {
protected:
enum X86SSEEnum {
- NoMMXSSE, MMX, SSE1, SSE2, SSE3, SSSE3, SSE41, SSE42, AVX, AVX2
+ NoMMXSSE, MMX, SSE1, SSE2, SSE3, SSSE3, SSE41, SSE42, AVX, AVX2, AVX512F
};
enum X863DNowEnum {
NoThreeDNow, ThreeDNow, ThreeDNowA
};
+ enum X86ProcFamilyEnum {
+ Others, IntelAtom, IntelSLM
+ };
+
+ /// X86ProcFamily - X86 processor family: Intel Atom, and others
+ X86ProcFamilyEnum X86ProcFamily;
+
/// PICStyle - Which PIC style to use
///
PICStyles::Style PICStyle;
/// 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;
/// HasXOP - Target has XOP instructions
bool HasXOP;
+ /// HasTBM - Target has TBM instructions.
+ bool HasTBM;
+
/// HasMOVBE - True if the processor has the MOVBE instruction.
bool HasMOVBE;
/// 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;
+
+ /// HasSHA - Processor has SHA instructions.
+ bool HasSHA;
+
+ /// 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;
+ /// IsSHLDSlow - True if SHLD instructions are slow.
+ bool IsSHLDSlow;
+
/// IsUAMemFast - True if unaligned memory access is fast.
bool IsUAMemFast;
/// 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;
+
+ /// Processor has AVX-512 PreFetch Instructions
+ bool HasPFI;
+
+ /// Processor has AVX-512 Exponential and Reciprocal Instructions
+ bool HasERI;
+
+ /// Processor has AVX-512 Conflict Detection Instructions
+ bool HasCDI;
+
/// 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;
/// TargetTriple - What processor and OS we're targeting.
Triple TargetTriple;
+ /// Instruction itineraries for scheduling
+ InstrItineraryData InstrItins;
+
private:
- /// In64BitMode - True if compiling for 64-bit, false for 32-bit.
+ /// StackAlignOverride - Override the stack alignment.
+ unsigned StackAlignOverride;
+
+ /// In64BitMode - True if compiling for 64-bit, false for 16-bit or 32-bit.
bool In64BitMode;
-public:
+ /// In32BitMode - True if compiling for 32-bit, false for 16-bit or 64-bit.
+ bool In32BitMode;
+
+ /// In16BitMode - True if compiling for 16-bit, false for 32-bit or 64-bit.
+ bool In16BitMode;
+public:
/// This constructor initializes the data members to match that
/// of the specified triple.
///
X86Subtarget(const std::string &TT, const std::string &CPU,
const std::string &FS,
- unsigned StackAlignOverride, bool is64Bit);
+ unsigned StackAlignOverride);
/// getStackAlignment - Returns the minimum alignment known to hold of the
/// stack frame on entry to the function and which must be maintained by every
/// subtarget options. Definition of function is auto generated by tblgen.
void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
- /// AutoDetectSubtargetFeatures - Auto-detect CPU features using CPUID
- /// instruction.
- void AutoDetectSubtargetFeatures();
+ /// \brief Reset the features for the X86 target.
+ void resetSubtargetFeatures(const MachineFunction *MF) override;
+private:
+ void initializeEnvironment();
+ void resetSubtargetFeatures(StringRef CPU, StringRef FS);
+public:
+ /// Is this x86_64? (disregarding specific ABI / programming model)
+ bool is64Bit() const {
+ return In64BitMode;
+ }
+
+ bool is32Bit() const {
+ return In32BitMode;
+ }
+
+ bool is16Bit() const {
+ return In16BitMode;
+ }
- 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 ||
+ TargetTriple.getOS() == Triple::NaCl);
+ }
+
+ /// 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; }
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 hasAVX512() const { return X86SSELevel >= AVX512F; }
+ 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 hasTBM() const { return HasTBM; }
bool hasMOVBE() const { return HasMOVBE; }
bool hasRDRAND() const { return HasRDRAND; }
bool hasF16C() const { return HasF16C; }
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 hasSHA() const { return HasSHA; }
+ bool hasPRFCHW() const { return HasPRFCHW; }
+ bool hasRDSEED() const { return HasRDSEED; }
bool isBTMemSlow() const { return IsBTMemSlow; }
+ bool isSHLDSlow() const { return IsSHLDSlow; }
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 hasCDI() const { return HasCDI; }
+ bool hasPFI() const { return HasPFI; }
+ bool hasERI() const { return HasERI; }
+
+ bool isAtom() const { return X86ProcFamily == IntelAtom; }
const Triple &getTargetTriple() const { return TargetTriple; }
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();
- }
- bool isTargetLinux() const { return TargetTriple.getOS() == Triple::Linux; }
- bool isTargetNaCl() const {
- return TargetTriple.getOS() == Triple::NativeClient;
- }
+ bool isTargetELF() const { return TargetTriple.isOSBinFormatELF(); }
+ bool isTargetCOFF() const { return TargetTriple.isOSBinFormatCOFF(); }
+ bool isTargetMacho() const { return TargetTriple.isOSBinFormatMachO(); }
+
+ bool isTargetLinux() const { return TargetTriple.isOSLinux(); }
+ bool isTargetNaCl() const { return TargetTriple.isOSNaCl(); }
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();
+ bool isTargetWindowsMSVC() const {
+ return TargetTriple.isWindowsMSVCEnvironment();
}
- /// isTargetCOFF - Return true if this is any COFF/Windows target variant.
- bool isTargetCOFF() const {
- return isTargetMingw() || isTargetCygwin() || isTargetWindows();
+ bool isTargetKnownWindowsMSVC() const {
+ return TargetTriple.isKnownWindowsMSVCEnvironment();
}
- bool isTargetWin64() const {
- // FIXME: x86_64-cygwin has not been released yet.
- return In64BitMode && (isTargetCygMing() || isTargetWindows());
+ bool isTargetWindowsCygwin() const {
+ return TargetTriple.isWindowsCygwinEnvironment();
}
- bool isTargetEnvMacho() const {
- return isTargetDarwin() || (TargetTriple.getEnvironment() == Triple::MachO);
+ bool isTargetWindowsGNU() const {
+ return TargetTriple.isWindowsGNUEnvironment();
+ }
+
+ bool isTargetCygMing() const { return TargetTriple.isOSCygMing(); }
+
+ bool isOSWindows() const { return TargetTriple.isOSWindows(); }
+
+ bool isTargetWin64() const {
+ return In64BitMode && TargetTriple.isOSWindows();
}
bool isTargetWin32() const {
- return !In64BitMode && (isTargetMingw() || isTargetWindows());
+ return !In64BitMode && (isTargetCygMing() || isTargetKnownWindowsMSVC());
}
bool isPICStyleSet() const { return PICStyle != PICStyles::None; }
}
bool isPICStyleStubAny() const {
return PICStyle == PICStyles::StubDynamicNoPIC ||
- PICStyle == PICStyles::StubPIC; }
+ PICStyle == PICStyles::StubPIC;
+ }
+
+ bool isCallingConvWin64(CallingConv::ID CC) const {
+ return (isTargetWin64() && CC != CallingConv::X86_64_SysV) ||
+ CC == CallingConv::X86_64_Win64;
+ }
/// ClassifyGlobalReference - Classify a global variable reference for the
/// current subtarget according to how we should reference it in a non-pcrel
/// returns null.
const char *getBZeroEntry() const;
- /// 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;
+ /// This function returns true if the target has sincos() routine in its
+ /// compiler runtime or math libraries.
+ bool hasSinCos() const;
+
+ /// Enable the MachineScheduler pass for all X86 subtargets.
+ bool enableMachineScheduler() const override { return true; }
+
+ /// enablePostRAScheduler - run for Atom optimization.
+ bool enablePostRAScheduler(CodeGenOpt::Level OptLevel,
+ TargetSubtargetInfo::AntiDepBreakMode& Mode,
+ RegClassVector& CriticalPathRCs) const override;
+
+ bool postRAScheduler() const { return PostRAScheduler; }
+
+ /// getInstrItins = Return the instruction itineraries based on the
+ /// subtarget selection.
+ const InstrItineraryData &getInstrItineraryData() const { return InstrItins; }
};
} // End llvm namespace
projects / oota-llvm.git / blobdiff