forked from OSchip/llvm-project
799 lines
26 KiB
C++
799 lines
26 KiB
C++
//===-- X86Subtarget.h - Define Subtarget for the X86 ----------*- C++ -*--===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file declares the X86 specific subclass of TargetSubtargetInfo.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_LIB_TARGET_X86_X86SUBTARGET_H
|
|
#define LLVM_LIB_TARGET_X86_X86SUBTARGET_H
|
|
|
|
#include "X86FrameLowering.h"
|
|
#include "X86ISelLowering.h"
|
|
#include "X86InstrInfo.h"
|
|
#include "X86SelectionDAGInfo.h"
|
|
#include "llvm/ADT/StringRef.h"
|
|
#include "llvm/ADT/Triple.h"
|
|
#include "llvm/CodeGen/GlobalISel/CallLowering.h"
|
|
#include "llvm/CodeGen/GlobalISel/InstructionSelector.h"
|
|
#include "llvm/CodeGen/GlobalISel/LegalizerInfo.h"
|
|
#include "llvm/CodeGen/GlobalISel/RegisterBankInfo.h"
|
|
#include "llvm/CodeGen/TargetSubtargetInfo.h"
|
|
#include "llvm/IR/CallingConv.h"
|
|
#include "llvm/MC/MCInstrItineraries.h"
|
|
#include "llvm/Target/TargetMachine.h"
|
|
#include <memory>
|
|
|
|
#define GET_SUBTARGETINFO_HEADER
|
|
#include "X86GenSubtargetInfo.inc"
|
|
|
|
namespace llvm {
|
|
|
|
class GlobalValue;
|
|
|
|
/// The X86 backend supports a number of different styles of PIC.
|
|
///
|
|
namespace PICStyles {
|
|
|
|
enum Style {
|
|
StubPIC, // Used on i386-darwin in pic mode.
|
|
GOT, // Used on 32 bit elf on when in pic mode.
|
|
RIPRel, // Used on X86-64 when in pic mode.
|
|
None // Set when not in pic mode.
|
|
};
|
|
|
|
} // end namespace PICStyles
|
|
|
|
class X86Subtarget final : public X86GenSubtargetInfo {
|
|
public:
|
|
enum X86ProcFamilyEnum {
|
|
Others,
|
|
IntelAtom,
|
|
IntelSLM,
|
|
IntelGLM,
|
|
IntelHaswell,
|
|
IntelBroadwell,
|
|
IntelSkylake,
|
|
IntelKNL,
|
|
IntelSKX,
|
|
IntelCannonlake,
|
|
IntelIcelake,
|
|
};
|
|
|
|
protected:
|
|
enum X86SSEEnum {
|
|
NoSSE, SSE1, SSE2, SSE3, SSSE3, SSE41, SSE42, AVX, AVX2, AVX512F
|
|
};
|
|
|
|
enum X863DNowEnum {
|
|
NoThreeDNow, MMX, ThreeDNow, ThreeDNowA
|
|
};
|
|
|
|
/// X86 processor family: Intel Atom, and others
|
|
X86ProcFamilyEnum X86ProcFamily;
|
|
|
|
/// Which PIC style to use
|
|
PICStyles::Style PICStyle;
|
|
|
|
const TargetMachine &TM;
|
|
|
|
/// SSE1, SSE2, SSE3, SSSE3, SSE41, SSE42, or none supported.
|
|
X86SSEEnum X86SSELevel;
|
|
|
|
/// MMX, 3DNow, 3DNow Athlon, or none supported.
|
|
X863DNowEnum X863DNowLevel;
|
|
|
|
/// True if the processor supports X87 instructions.
|
|
bool HasX87;
|
|
|
|
/// True if this processor has NOPL instruction
|
|
/// (generally pentium pro+).
|
|
bool HasNOPL;
|
|
|
|
/// True if this processor has conditional move instructions
|
|
/// (generally pentium pro+).
|
|
bool HasCMov;
|
|
|
|
/// True if the processor supports X86-64 instructions.
|
|
bool HasX86_64;
|
|
|
|
/// True if the processor supports POPCNT.
|
|
bool HasPOPCNT;
|
|
|
|
/// True if the processor supports SSE4A instructions.
|
|
bool HasSSE4A;
|
|
|
|
/// Target has AES instructions
|
|
bool HasAES;
|
|
bool HasVAES;
|
|
|
|
/// Target has FXSAVE/FXRESTOR instructions
|
|
bool HasFXSR;
|
|
|
|
/// Target has XSAVE instructions
|
|
bool HasXSAVE;
|
|
|
|
/// Target has XSAVEOPT instructions
|
|
bool HasXSAVEOPT;
|
|
|
|
/// Target has XSAVEC instructions
|
|
bool HasXSAVEC;
|
|
|
|
/// Target has XSAVES instructions
|
|
bool HasXSAVES;
|
|
|
|
/// Target has carry-less multiplication
|
|
bool HasPCLMUL;
|
|
bool HasVPCLMULQDQ;
|
|
|
|
/// Target has Galois Field Arithmetic instructions
|
|
bool HasGFNI;
|
|
|
|
/// Target has 3-operand fused multiply-add
|
|
bool HasFMA;
|
|
|
|
/// Target has 4-operand fused multiply-add
|
|
bool HasFMA4;
|
|
|
|
/// Target has XOP instructions
|
|
bool HasXOP;
|
|
|
|
/// Target has TBM instructions.
|
|
bool HasTBM;
|
|
|
|
/// Target has LWP instructions
|
|
bool HasLWP;
|
|
|
|
/// True if the processor has the MOVBE instruction.
|
|
bool HasMOVBE;
|
|
|
|
/// True if the processor has the RDRAND instruction.
|
|
bool HasRDRAND;
|
|
|
|
/// Processor has 16-bit floating point conversion instructions.
|
|
bool HasF16C;
|
|
|
|
/// Processor has FS/GS base insturctions.
|
|
bool HasFSGSBase;
|
|
|
|
/// Processor has LZCNT instruction.
|
|
bool HasLZCNT;
|
|
|
|
/// Processor has BMI1 instructions.
|
|
bool HasBMI;
|
|
|
|
/// Processor has BMI2 instructions.
|
|
bool HasBMI2;
|
|
|
|
/// Processor has VBMI instructions.
|
|
bool HasVBMI;
|
|
|
|
/// Processor has VBMI2 instructions.
|
|
bool HasVBMI2;
|
|
|
|
/// Processor has Integer Fused Multiply Add
|
|
bool HasIFMA;
|
|
|
|
/// Processor has RTM instructions.
|
|
bool HasRTM;
|
|
|
|
/// Processor has ADX instructions.
|
|
bool HasADX;
|
|
|
|
/// Processor has SHA instructions.
|
|
bool HasSHA;
|
|
|
|
/// Processor has PRFCHW instructions.
|
|
bool HasPRFCHW;
|
|
|
|
/// Processor has RDSEED instructions.
|
|
bool HasRDSEED;
|
|
|
|
/// Processor has LAHF/SAHF instructions.
|
|
bool HasLAHFSAHF;
|
|
|
|
/// Processor has MONITORX/MWAITX instructions.
|
|
bool HasMWAITX;
|
|
|
|
/// Processor has Cache Line Zero instruction
|
|
bool HasCLZERO;
|
|
|
|
/// Processor has Prefetch with intent to Write instruction
|
|
bool HasPREFETCHWT1;
|
|
|
|
/// True if SHLD instructions are slow.
|
|
bool IsSHLDSlow;
|
|
|
|
/// True if the PMULLD instruction is slow compared to PMULLW/PMULHW and
|
|
// PMULUDQ.
|
|
bool IsPMULLDSlow;
|
|
|
|
/// True if unaligned memory accesses of 16-bytes are slow.
|
|
bool IsUAMem16Slow;
|
|
|
|
/// True if unaligned memory accesses of 32-bytes are slow.
|
|
bool IsUAMem32Slow;
|
|
|
|
/// True if SSE operations can have unaligned memory operands.
|
|
/// This may require setting a configuration bit in the processor.
|
|
bool HasSSEUnalignedMem;
|
|
|
|
/// True if this processor has the CMPXCHG16B instruction;
|
|
/// this is true for most x86-64 chips, but not the first AMD chips.
|
|
bool HasCmpxchg16b;
|
|
|
|
/// True if the LEA instruction should be used for adjusting
|
|
/// the stack pointer. This is an optimization for Intel Atom processors.
|
|
bool UseLeaForSP;
|
|
|
|
/// True if POPCNT instruction has a false dependency on the destination register.
|
|
bool HasPOPCNTFalseDeps;
|
|
|
|
/// True if LZCNT/TZCNT instructions have a false dependency on the destination register.
|
|
bool HasLZCNTFalseDeps;
|
|
|
|
/// True if its preferable to combine to a single shuffle using a variable
|
|
/// mask over multiple fixed shuffles.
|
|
bool HasFastVariableShuffle;
|
|
|
|
/// True if there is no performance penalty to writing only the lower parts
|
|
/// of a YMM or ZMM register without clearing the upper part.
|
|
bool HasFastPartialYMMorZMMWrite;
|
|
|
|
/// True if there is no performance penalty for writing NOPs with up to
|
|
/// 11 bytes.
|
|
bool HasFast11ByteNOP;
|
|
|
|
/// True if there is no performance penalty for writing NOPs with up to
|
|
/// 15 bytes.
|
|
bool HasFast15ByteNOP;
|
|
|
|
/// True if gather is reasonably fast. This is true for Skylake client and
|
|
/// all AVX-512 CPUs.
|
|
bool HasFastGather;
|
|
|
|
/// True if hardware SQRTSS instruction is at least as fast (latency) as
|
|
/// RSQRTSS followed by a Newton-Raphson iteration.
|
|
bool HasFastScalarFSQRT;
|
|
|
|
/// True if hardware SQRTPS/VSQRTPS instructions are at least as fast
|
|
/// (throughput) as RSQRTPS/VRSQRTPS followed by a Newton-Raphson iteration.
|
|
bool HasFastVectorFSQRT;
|
|
|
|
/// True if 8-bit divisions are significantly faster than
|
|
/// 32-bit divisions and should be used when possible.
|
|
bool HasSlowDivide32;
|
|
|
|
/// True if 32-bit divides are significantly faster than
|
|
/// 64-bit divisions and should be used when possible.
|
|
bool HasSlowDivide64;
|
|
|
|
/// True if LZCNT instruction is fast.
|
|
bool HasFastLZCNT;
|
|
|
|
/// True if SHLD based rotate is fast.
|
|
bool HasFastSHLDRotate;
|
|
|
|
/// True if the processor supports macrofusion.
|
|
bool HasMacroFusion;
|
|
|
|
/// True if the processor has enhanced REP MOVSB/STOSB.
|
|
bool HasERMSB;
|
|
|
|
/// True if the short functions should be padded to prevent
|
|
/// a stall when returning too early.
|
|
bool PadShortFunctions;
|
|
|
|
/// True if two memory operand instructions should use a temporary register
|
|
/// instead.
|
|
bool SlowTwoMemOps;
|
|
|
|
/// True if the LEA instruction inputs have to be ready at address generation
|
|
/// (AG) time.
|
|
bool LEAUsesAG;
|
|
|
|
/// True if the LEA instruction with certain arguments is slow
|
|
bool SlowLEA;
|
|
|
|
/// True if the LEA instruction has all three source operands: base, index,
|
|
/// and offset or if the LEA instruction uses base and index registers where
|
|
/// the base is EBP, RBP,or R13
|
|
bool Slow3OpsLEA;
|
|
|
|
/// True if INC and DEC instructions are slow when writing to flags
|
|
bool SlowIncDec;
|
|
|
|
/// 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;
|
|
|
|
/// Processor has AVX-512 population count Instructions
|
|
bool HasVPOPCNTDQ;
|
|
|
|
/// Processor has AVX-512 Doubleword and Quadword instructions
|
|
bool HasDQI;
|
|
|
|
/// Processor has AVX-512 Byte and Word instructions
|
|
bool HasBWI;
|
|
|
|
/// Processor has AVX-512 Vector Length eXtenstions
|
|
bool HasVLX;
|
|
|
|
/// Processor has PKU extenstions
|
|
bool HasPKU;
|
|
|
|
/// Processor has AVX-512 Vector Neural Network Instructions
|
|
bool HasVNNI;
|
|
|
|
/// Processor has AVX-512 Bit Algorithms instructions
|
|
bool HasBITALG;
|
|
|
|
/// Processor supports MPX - Memory Protection Extensions
|
|
bool HasMPX;
|
|
|
|
/// Processor supports CET SHSTK - Control-Flow Enforcement Technology
|
|
/// using Shadow Stack
|
|
bool HasSHSTK;
|
|
|
|
/// Processor supports CET IBT - Control-Flow Enforcement Technology
|
|
/// using Indirect Branch Tracking
|
|
bool HasIBT;
|
|
|
|
/// Processor has Software Guard Extensions
|
|
bool HasSGX;
|
|
|
|
/// Processor supports Flush Cache Line instruction
|
|
bool HasCLFLUSHOPT;
|
|
|
|
/// Processor supports Cache Line Write Back instruction
|
|
bool HasCLWB;
|
|
|
|
/// Processor support RDPID instruction
|
|
bool HasRDPID;
|
|
|
|
/// Use a retpoline thunk rather than indirect calls to block speculative
|
|
/// execution.
|
|
bool UseRetpoline;
|
|
|
|
/// When using a retpoline thunk, call an externally provided thunk rather
|
|
/// than emitting one inside the compiler.
|
|
bool UseRetpolineExternalThunk;
|
|
|
|
/// Use software floating point for code generation.
|
|
bool UseSoftFloat;
|
|
|
|
/// 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;
|
|
|
|
/// Max. memset / memcpy size that is turned into rep/movs, rep/stos ops.
|
|
///
|
|
unsigned MaxInlineSizeThreshold;
|
|
|
|
/// Indicates target prefers 256 bit instructions.
|
|
bool Prefer256Bit;
|
|
|
|
/// What processor and OS we're targeting.
|
|
Triple TargetTriple;
|
|
|
|
/// Instruction itineraries for scheduling
|
|
InstrItineraryData InstrItins;
|
|
|
|
/// GlobalISel related APIs.
|
|
std::unique_ptr<CallLowering> CallLoweringInfo;
|
|
std::unique_ptr<LegalizerInfo> Legalizer;
|
|
std::unique_ptr<RegisterBankInfo> RegBankInfo;
|
|
std::unique_ptr<InstructionSelector> InstSelector;
|
|
|
|
private:
|
|
/// Override the stack alignment.
|
|
unsigned StackAlignOverride;
|
|
|
|
/// Preferred vector width from function attribute.
|
|
unsigned PreferVectorWidthOverride;
|
|
|
|
/// Resolved preferred vector width from function attribute and subtarget
|
|
/// features.
|
|
unsigned PreferVectorWidth;
|
|
|
|
/// Required vector width from function attribute.
|
|
unsigned RequiredVectorWidth;
|
|
|
|
/// True if compiling for 64-bit, false for 16-bit or 32-bit.
|
|
bool In64BitMode;
|
|
|
|
/// True if compiling for 32-bit, false for 16-bit or 64-bit.
|
|
bool In32BitMode;
|
|
|
|
/// True if compiling for 16-bit, false for 32-bit or 64-bit.
|
|
bool In16BitMode;
|
|
|
|
/// Contains the Overhead of gather\scatter instructions
|
|
int GatherOverhead;
|
|
int ScatterOverhead;
|
|
|
|
X86SelectionDAGInfo TSInfo;
|
|
// Ordering here is important. X86InstrInfo initializes X86RegisterInfo which
|
|
// X86TargetLowering needs.
|
|
X86InstrInfo InstrInfo;
|
|
X86TargetLowering TLInfo;
|
|
X86FrameLowering FrameLowering;
|
|
|
|
public:
|
|
/// This constructor initializes the data members to match that
|
|
/// of the specified triple.
|
|
///
|
|
X86Subtarget(const Triple &TT, StringRef CPU, StringRef FS,
|
|
const X86TargetMachine &TM, unsigned StackAlignOverride,
|
|
unsigned PreferVectorWidthOverride,
|
|
unsigned RequiredVectorWidth);
|
|
|
|
const X86TargetLowering *getTargetLowering() const override {
|
|
return &TLInfo;
|
|
}
|
|
|
|
const X86InstrInfo *getInstrInfo() const override { return &InstrInfo; }
|
|
|
|
const X86FrameLowering *getFrameLowering() const override {
|
|
return &FrameLowering;
|
|
}
|
|
|
|
const X86SelectionDAGInfo *getSelectionDAGInfo() const override {
|
|
return &TSInfo;
|
|
}
|
|
|
|
const X86RegisterInfo *getRegisterInfo() const override {
|
|
return &getInstrInfo()->getRegisterInfo();
|
|
}
|
|
|
|
/// Returns the minimum alignment known to hold of the
|
|
/// stack frame on entry to the function and which must be maintained by every
|
|
/// function for this subtarget.
|
|
unsigned getStackAlignment() const { return stackAlignment; }
|
|
|
|
/// Returns the maximum memset / memcpy size
|
|
/// that still makes it profitable to inline the call.
|
|
unsigned getMaxInlineSizeThreshold() const { return MaxInlineSizeThreshold; }
|
|
|
|
/// ParseSubtargetFeatures - Parses features string setting specified
|
|
/// subtarget options. Definition of function is auto generated by tblgen.
|
|
void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
|
|
|
|
/// Methods used by Global ISel
|
|
const CallLowering *getCallLowering() const override;
|
|
const InstructionSelector *getInstructionSelector() const override;
|
|
const LegalizerInfo *getLegalizerInfo() const override;
|
|
const RegisterBankInfo *getRegBankInfo() const override;
|
|
|
|
private:
|
|
/// Initialize the full set of dependencies so we can use an initializer
|
|
/// list for X86Subtarget.
|
|
X86Subtarget &initializeSubtargetDependencies(StringRef CPU, StringRef FS);
|
|
void initializeEnvironment();
|
|
void initSubtargetFeatures(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;
|
|
}
|
|
|
|
/// Is this x86_64 with the ILP32 programming model (x32 ABI)?
|
|
bool isTarget64BitILP32() const {
|
|
return In64BitMode && (TargetTriple.getEnvironment() == Triple::GNUX32 ||
|
|
TargetTriple.isOSNaCl());
|
|
}
|
|
|
|
/// Is this x86_64 with the LP64 programming model (standard AMD64, no x32)?
|
|
bool isTarget64BitLP64() const {
|
|
return In64BitMode && (TargetTriple.getEnvironment() != Triple::GNUX32 &&
|
|
!TargetTriple.isOSNaCl());
|
|
}
|
|
|
|
PICStyles::Style getPICStyle() const { return PICStyle; }
|
|
void setPICStyle(PICStyles::Style Style) { PICStyle = Style; }
|
|
|
|
bool hasX87() const { return HasX87; }
|
|
bool hasNOPL() const { return HasNOPL; }
|
|
bool hasCMov() const { return HasCMov; }
|
|
bool hasSSE1() const { return X86SSELevel >= SSE1; }
|
|
bool hasSSE2() const { return X86SSELevel >= SSE2; }
|
|
bool hasSSE3() const { return X86SSELevel >= SSE3; }
|
|
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 hasInt256() const { return hasAVX2(); }
|
|
bool hasSSE4A() const { return HasSSE4A; }
|
|
bool hasMMX() const { return X863DNowLevel >= MMX; }
|
|
bool has3DNow() const { return X863DNowLevel >= ThreeDNow; }
|
|
bool has3DNowA() const { return X863DNowLevel >= ThreeDNowA; }
|
|
bool hasPOPCNT() const { return HasPOPCNT; }
|
|
bool hasAES() const { return HasAES; }
|
|
bool hasVAES() const { return HasVAES; }
|
|
bool hasFXSR() const { return HasFXSR; }
|
|
bool hasXSAVE() const { return HasXSAVE; }
|
|
bool hasXSAVEOPT() const { return HasXSAVEOPT; }
|
|
bool hasXSAVEC() const { return HasXSAVEC; }
|
|
bool hasXSAVES() const { return HasXSAVES; }
|
|
bool hasPCLMUL() const { return HasPCLMUL; }
|
|
bool hasVPCLMULQDQ() const { return HasVPCLMULQDQ; }
|
|
bool hasGFNI() const { return HasGFNI; }
|
|
// Prefer FMA4 to FMA - its better for commutation/memory folding and
|
|
// has equal or better performance on all supported targets.
|
|
bool hasFMA() const { return HasFMA; }
|
|
bool hasFMA4() const { return HasFMA4; }
|
|
bool hasAnyFMA() const { return hasFMA() || hasFMA4(); }
|
|
bool hasXOP() const { return HasXOP; }
|
|
bool hasTBM() const { return HasTBM; }
|
|
bool hasLWP() const { return HasLWP; }
|
|
bool hasMOVBE() const { return HasMOVBE; }
|
|
bool hasRDRAND() const { return HasRDRAND; }
|
|
bool hasF16C() const { return HasF16C; }
|
|
bool hasFSGSBase() const { return HasFSGSBase; }
|
|
bool hasLZCNT() const { return HasLZCNT; }
|
|
bool hasBMI() const { return HasBMI; }
|
|
bool hasBMI2() const { return HasBMI2; }
|
|
bool hasVBMI() const { return HasVBMI; }
|
|
bool hasVBMI2() const { return HasVBMI2; }
|
|
bool hasIFMA() const { return HasIFMA; }
|
|
bool hasRTM() const { return HasRTM; }
|
|
bool hasADX() const { return HasADX; }
|
|
bool hasSHA() const { return HasSHA; }
|
|
bool hasPRFCHW() const { return HasPRFCHW || HasPREFETCHWT1; }
|
|
bool hasPREFETCHWT1() const { return HasPREFETCHWT1; }
|
|
bool hasSSEPrefetch() const {
|
|
// We implicitly enable these when we have a write prefix supporting cache
|
|
// level OR if we have prfchw, but don't already have a read prefetch from
|
|
// 3dnow.
|
|
return hasSSE1() || (hasPRFCHW() && !has3DNow()) || hasPREFETCHWT1();
|
|
}
|
|
bool hasRDSEED() const { return HasRDSEED; }
|
|
bool hasLAHFSAHF() const { return HasLAHFSAHF; }
|
|
bool hasMWAITX() const { return HasMWAITX; }
|
|
bool hasCLZERO() const { return HasCLZERO; }
|
|
bool isSHLDSlow() const { return IsSHLDSlow; }
|
|
bool isPMULLDSlow() const { return IsPMULLDSlow; }
|
|
bool isUnalignedMem16Slow() const { return IsUAMem16Slow; }
|
|
bool isUnalignedMem32Slow() const { return IsUAMem32Slow; }
|
|
int getGatherOverhead() const { return GatherOverhead; }
|
|
int getScatterOverhead() const { return ScatterOverhead; }
|
|
bool hasSSEUnalignedMem() const { return HasSSEUnalignedMem; }
|
|
bool hasCmpxchg16b() const { return HasCmpxchg16b; }
|
|
bool useLeaForSP() const { return UseLeaForSP; }
|
|
bool hasPOPCNTFalseDeps() const { return HasPOPCNTFalseDeps; }
|
|
bool hasLZCNTFalseDeps() const { return HasLZCNTFalseDeps; }
|
|
bool hasFastVariableShuffle() const {
|
|
return HasFastVariableShuffle;
|
|
}
|
|
bool hasFastPartialYMMorZMMWrite() const {
|
|
return HasFastPartialYMMorZMMWrite;
|
|
}
|
|
bool hasFastGather() const { return HasFastGather; }
|
|
bool hasFastScalarFSQRT() const { return HasFastScalarFSQRT; }
|
|
bool hasFastVectorFSQRT() const { return HasFastVectorFSQRT; }
|
|
bool hasFastLZCNT() const { return HasFastLZCNT; }
|
|
bool hasFastSHLDRotate() const { return HasFastSHLDRotate; }
|
|
bool hasMacroFusion() const { return HasMacroFusion; }
|
|
bool hasERMSB() const { return HasERMSB; }
|
|
bool hasSlowDivide32() const { return HasSlowDivide32; }
|
|
bool hasSlowDivide64() const { return HasSlowDivide64; }
|
|
bool padShortFunctions() const { return PadShortFunctions; }
|
|
bool slowTwoMemOps() const { return SlowTwoMemOps; }
|
|
bool LEAusesAG() const { return LEAUsesAG; }
|
|
bool slowLEA() const { return SlowLEA; }
|
|
bool slow3OpsLEA() const { return Slow3OpsLEA; }
|
|
bool slowIncDec() const { return SlowIncDec; }
|
|
bool hasCDI() const { return HasCDI; }
|
|
bool hasVPOPCNTDQ() const { return HasVPOPCNTDQ; }
|
|
bool hasPFI() const { return HasPFI; }
|
|
bool hasERI() const { return HasERI; }
|
|
bool hasDQI() const { return HasDQI; }
|
|
bool hasBWI() const { return HasBWI; }
|
|
bool hasVLX() const { return HasVLX; }
|
|
bool hasPKU() const { return HasPKU; }
|
|
bool hasVNNI() const { return HasVNNI; }
|
|
bool hasBITALG() const { return HasBITALG; }
|
|
bool hasMPX() const { return HasMPX; }
|
|
bool hasSHSTK() const { return HasSHSTK; }
|
|
bool hasIBT() const { return HasIBT; }
|
|
bool hasCLFLUSHOPT() const { return HasCLFLUSHOPT; }
|
|
bool hasCLWB() const { return HasCLWB; }
|
|
bool hasRDPID() const { return HasRDPID; }
|
|
bool useRetpoline() const { return UseRetpoline; }
|
|
bool useRetpolineExternalThunk() const { return UseRetpolineExternalThunk; }
|
|
|
|
unsigned getPreferVectorWidth() const { return PreferVectorWidth; }
|
|
unsigned getRequiredVectorWidth() const { return RequiredVectorWidth; }
|
|
|
|
// Helper functions to determine when we should allow widening to 512-bit
|
|
// during codegen.
|
|
// TODO: Currently we're always allowing widening on CPUs without VLX,
|
|
// because for many cases we don't have a better option.
|
|
bool canExtendTo512DQ() const {
|
|
return hasAVX512() && (!hasVLX() || getPreferVectorWidth() >= 512);
|
|
}
|
|
bool canExtendTo512BW() const {
|
|
return hasBWI() && canExtendTo512DQ();
|
|
}
|
|
|
|
// If there are no 512-bit vectors and we prefer not to use 512-bit registers,
|
|
// disable them in the legalizer.
|
|
bool useAVX512Regs() const {
|
|
return hasAVX512() && (canExtendTo512DQ() || RequiredVectorWidth > 256);
|
|
}
|
|
|
|
bool useBWIRegs() const {
|
|
return hasBWI() && useAVX512Regs();
|
|
}
|
|
|
|
bool isXRaySupported() const override { return is64Bit(); }
|
|
|
|
X86ProcFamilyEnum getProcFamily() const { return X86ProcFamily; }
|
|
|
|
/// TODO: to be removed later and replaced with suitable properties
|
|
bool isAtom() const { return X86ProcFamily == IntelAtom; }
|
|
bool isSLM() const { return X86ProcFamily == IntelSLM; }
|
|
bool useSoftFloat() const { return UseSoftFloat; }
|
|
|
|
/// Use mfence if we have SSE2 or we're on x86-64 (even if we asked for
|
|
/// no-sse2). There isn't any reason to disable it if the target processor
|
|
/// supports it.
|
|
bool hasMFence() const { return hasSSE2() || is64Bit(); }
|
|
|
|
const Triple &getTargetTriple() const { return TargetTriple; }
|
|
|
|
bool isTargetDarwin() const { return TargetTriple.isOSDarwin(); }
|
|
bool isTargetFreeBSD() const { return TargetTriple.isOSFreeBSD(); }
|
|
bool isTargetDragonFly() const { return TargetTriple.isOSDragonFly(); }
|
|
bool isTargetSolaris() const { return TargetTriple.isOSSolaris(); }
|
|
bool isTargetPS4() const { return TargetTriple.isPS4CPU(); }
|
|
|
|
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 isTargetKFreeBSD() const { return TargetTriple.isOSKFreeBSD(); }
|
|
bool isTargetGlibc() const { return TargetTriple.isOSGlibc(); }
|
|
bool isTargetAndroid() const { return TargetTriple.isAndroid(); }
|
|
bool isTargetNaCl() const { return TargetTriple.isOSNaCl(); }
|
|
bool isTargetNaCl32() const { return isTargetNaCl() && !is64Bit(); }
|
|
bool isTargetNaCl64() const { return isTargetNaCl() && is64Bit(); }
|
|
bool isTargetMCU() const { return TargetTriple.isOSIAMCU(); }
|
|
bool isTargetFuchsia() const { return TargetTriple.isOSFuchsia(); }
|
|
|
|
bool isTargetWindowsMSVC() const {
|
|
return TargetTriple.isWindowsMSVCEnvironment();
|
|
}
|
|
|
|
bool isTargetKnownWindowsMSVC() const {
|
|
return TargetTriple.isKnownWindowsMSVCEnvironment();
|
|
}
|
|
|
|
bool isTargetWindowsCoreCLR() const {
|
|
return TargetTriple.isWindowsCoreCLREnvironment();
|
|
}
|
|
|
|
bool isTargetWindowsCygwin() const {
|
|
return TargetTriple.isWindowsCygwinEnvironment();
|
|
}
|
|
|
|
bool isTargetWindowsGNU() const {
|
|
return TargetTriple.isWindowsGNUEnvironment();
|
|
}
|
|
|
|
bool isTargetWindowsItanium() const {
|
|
return TargetTriple.isWindowsItaniumEnvironment();
|
|
}
|
|
|
|
bool isTargetCygMing() const { return TargetTriple.isOSCygMing(); }
|
|
|
|
bool isOSWindows() const { return TargetTriple.isOSWindows(); }
|
|
|
|
bool isTargetWin64() const { return In64BitMode && isOSWindows(); }
|
|
|
|
bool isTargetWin32() const { return !In64BitMode && isOSWindows(); }
|
|
|
|
bool isPICStyleGOT() const { return PICStyle == PICStyles::GOT; }
|
|
bool isPICStyleRIPRel() const { return PICStyle == PICStyles::RIPRel; }
|
|
|
|
bool isPICStyleStubPIC() const {
|
|
return PICStyle == PICStyles::StubPIC;
|
|
}
|
|
|
|
bool isPositionIndependent() const { return TM.isPositionIndependent(); }
|
|
|
|
bool isCallingConvWin64(CallingConv::ID CC) const {
|
|
switch (CC) {
|
|
// On Win64, all these conventions just use the default convention.
|
|
case CallingConv::C:
|
|
case CallingConv::Fast:
|
|
case CallingConv::Swift:
|
|
case CallingConv::X86_FastCall:
|
|
case CallingConv::X86_StdCall:
|
|
case CallingConv::X86_ThisCall:
|
|
case CallingConv::X86_VectorCall:
|
|
case CallingConv::Intel_OCL_BI:
|
|
return isTargetWin64();
|
|
// This convention allows using the Win64 convention on other targets.
|
|
case CallingConv::Win64:
|
|
return true;
|
|
// This convention allows using the SysV convention on Windows targets.
|
|
case CallingConv::X86_64_SysV:
|
|
return false;
|
|
// Otherwise, who knows what this is.
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/// Classify a global variable reference for the current subtarget according
|
|
/// to how we should reference it in a non-pcrel context.
|
|
unsigned char classifyLocalReference(const GlobalValue *GV) const;
|
|
|
|
unsigned char classifyGlobalReference(const GlobalValue *GV,
|
|
const Module &M) const;
|
|
unsigned char classifyGlobalReference(const GlobalValue *GV) const;
|
|
|
|
/// Classify a global function reference for the current subtarget.
|
|
unsigned char classifyGlobalFunctionReference(const GlobalValue *GV,
|
|
const Module &M) const;
|
|
unsigned char classifyGlobalFunctionReference(const GlobalValue *GV) const;
|
|
|
|
/// Classify a blockaddress reference for the current subtarget according to
|
|
/// how we should reference it in a non-pcrel context.
|
|
unsigned char classifyBlockAddressReference() const;
|
|
|
|
/// Return true if the subtarget allows calls to immediate address.
|
|
bool isLegalToCallImmediateAddr() const;
|
|
|
|
/// If we are using retpolines, we need to expand indirectbr to avoid it
|
|
/// lowering to an actual indirect jump.
|
|
bool enableIndirectBrExpand() const override { return useRetpoline(); }
|
|
|
|
/// Enable the MachineScheduler pass for all X86 subtargets.
|
|
bool enableMachineScheduler() const override { return true; }
|
|
|
|
// TODO: Update the regression tests and return true.
|
|
bool supportPrintSchedInfo() const override { return false; }
|
|
|
|
bool enableEarlyIfConversion() const override;
|
|
|
|
/// Return the instruction itineraries based on the subtarget selection.
|
|
const InstrItineraryData *getInstrItineraryData() const override {
|
|
return &InstrItins;
|
|
}
|
|
|
|
AntiDepBreakMode getAntiDepBreakMode() const override {
|
|
return TargetSubtargetInfo::ANTIDEP_CRITICAL;
|
|
}
|
|
|
|
bool enableAdvancedRASplitCost() const override { return true; }
|
|
};
|
|
|
|
} // end namespace llvm
|
|
|
|
#endif // LLVM_LIB_TARGET_X86_X86SUBTARGET_H
|