//
//===----------------------------------------------------------------------===//
-#ifndef MIPSSUBTARGET_H
-#define MIPSSUBTARGET_H
-
+#ifndef LLVM_LIB_TARGET_MIPS_MIPSSUBTARGET_H
+#define LLVM_LIB_TARGET_MIPS_MIPSSUBTARGET_H
+
+#include "MCTargetDesc/MipsABIInfo.h"
+#include "MipsFrameLowering.h"
+#include "MipsISelLowering.h"
+#include "MipsInstrInfo.h"
+#include "MipsSelectionDAGInfo.h"
+#include "llvm/IR/DataLayout.h"
#include "llvm/MC/MCInstrItineraries.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Target/TargetSubtargetInfo.h"
class MipsSubtarget : public MipsGenSubtargetInfo {
virtual void anchor();
-public:
- // NOTE: O64 will not be supported.
- enum MipsABIEnum {
- UnknownABI, O32, N32, N64, EABI
+ enum MipsArchEnum {
+ MipsDefault,
+ Mips1, Mips2, Mips32, Mips32r2, Mips32r3, Mips32r5, Mips32r6, Mips32Max,
+ Mips3, Mips4, Mips5, Mips64, Mips64r2, Mips64r3, Mips64r5, Mips64r6
};
-protected:
- enum MipsArchEnum { Mips32, Mips32r2, Mips4, Mips64, Mips64r2 };
-
// Mips architecture version
MipsArchEnum MipsArchVersion;
- // Mips supported ABIs
- MipsABIEnum MipsABI;
-
// IsLittle - The target is Little Endian
bool IsLittle;
+ // IsSoftFloat - The target does not support any floating point instructions.
+ bool IsSoftFloat;
+
// IsSingleFloat - The target only supports single precision float
// point operations. This enable the target to use all 32 32-bit
// floating point registers instead of only using even ones.
bool IsSingleFloat;
+ // IsFPXX - MIPS O32 modeless ABI.
+ bool IsFPXX;
+
+ // NoABICalls - Disable SVR4-style position-independent code.
+ bool NoABICalls;
+
// IsFP64bit - The target processor has 64-bit floating point registers.
bool IsFP64bit;
+ /// Are odd single-precision registers permitted?
+ /// This corresponds to -modd-spreg and -mno-odd-spreg
+ bool UseOddSPReg;
+
+ // IsNan2008 - IEEE 754-2008 NaN encoding.
+ bool IsNaN2008bit;
+
// IsFP64bit - General-purpose registers are 64 bits wide
bool IsGP64bit;
/// Features related to the presence of specific instructions.
- // HasSEInReg - SEB and SEH (signext in register) instructions.
- bool HasSEInReg;
+ // HasMips3_32 - The subset of MIPS-III instructions added to MIPS32
+ bool HasMips3_32;
- // HasCondMov - Conditional mov (MOVZ, MOVN) instructions.
- bool HasCondMov;
+ // HasMips3_32r2 - The subset of MIPS-III instructions added to MIPS32r2
+ bool HasMips3_32r2;
- // HasSwap - Byte and half swap instructions.
- bool HasSwap;
+ // HasMips4_32 - Has the subset of MIPS-IV present in MIPS32
+ bool HasMips4_32;
- // HasBitCount - Count leading '1' and '0' bits.
- bool HasBitCount;
+ // HasMips4_32r2 - Has the subset of MIPS-IV present in MIPS32r2
+ bool HasMips4_32r2;
- // HasFPIdx -- Floating point indexed load/store instructions.
- bool HasFPIdx;
+ // HasMips5_32r2 - Has the subset of MIPS-V present in MIPS32r2
+ bool HasMips5_32r2;
// InMips16 -- can process Mips16 instructions
bool InMips16Mode;
InstrItineraryData InstrItins;
- // Relocation Model
- Reloc::Model RM;
-
// We can override the determination of whether we are in mips16 mode
// as from the command line
enum {NoOverride, Mips16Override, NoMips16Override} OverrideMode;
- MipsTargetMachine *TM;
+ const MipsTargetMachine &TM;
Triple TargetTriple;
+
+ const MipsSelectionDAGInfo TSInfo;
+ std::unique_ptr<const MipsInstrInfo> InstrInfo;
+ std::unique_ptr<const MipsFrameLowering> FrameLowering;
+ std::unique_ptr<const MipsTargetLowering> TLInfo;
+
public:
- virtual bool enablePostRAScheduler(CodeGenOpt::Level OptLevel,
- AntiDepBreakMode& Mode,
- RegClassVector& CriticalPathRCs) const;
+ /// This overrides the PostRAScheduler bit in the SchedModel for each CPU.
+ bool enablePostMachineScheduler() const override;
+ void getCriticalPathRCs(RegClassVector &CriticalPathRCs) const override;
+ CodeGenOpt::Level getOptLevelToEnablePostRAScheduler() const override;
/// Only O32 and EABI supported right now.
- bool isABI_EABI() const { return MipsABI == EABI; }
- bool isABI_N64() const { return MipsABI == N64; }
- bool isABI_N32() const { return MipsABI == N32; }
- bool isABI_O32() const { return MipsABI == O32; }
- unsigned getTargetABI() const { return MipsABI; }
+ bool isABI_EABI() const;
+ bool isABI_N64() const;
+ bool isABI_N32() const;
+ bool isABI_O32() const;
+ const MipsABIInfo &getABI() const;
+ bool isABI_FPXX() const { return isABI_O32() && IsFPXX; }
/// This constructor initializes the data members to match that
/// of the specified triple.
MipsSubtarget(const std::string &TT, const std::string &CPU,
- const std::string &FS, bool little, Reloc::Model RM,
- MipsTargetMachine *TM);
+ const std::string &FS, bool little,
+ const MipsTargetMachine &TM);
/// ParseSubtargetFeatures - Parses features string setting specified
/// subtarget options. Definition of function is auto generated by tblgen.
void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
- bool hasMips32() const { return MipsArchVersion >= Mips32; }
- bool hasMips32r2() const { return MipsArchVersion == Mips32r2 ||
- MipsArchVersion == Mips64r2; }
+ bool hasMips1() const { return MipsArchVersion >= Mips1; }
+ bool hasMips2() const { return MipsArchVersion >= Mips2; }
+ bool hasMips3() const { return MipsArchVersion >= Mips3; }
+ bool hasMips4() const { return MipsArchVersion >= Mips4; }
+ bool hasMips5() const { return MipsArchVersion >= Mips5; }
+ bool hasMips4_32() const { return HasMips4_32; }
+ bool hasMips4_32r2() const { return HasMips4_32r2; }
+ bool hasMips32() const {
+ return (MipsArchVersion >= Mips32 && MipsArchVersion < Mips32Max) ||
+ hasMips64();
+ }
+ bool hasMips32r2() const {
+ return (MipsArchVersion >= Mips32r2 && MipsArchVersion < Mips32Max) ||
+ hasMips64r2();
+ }
+ bool hasMips32r3() const {
+ return (MipsArchVersion >= Mips32r3 && MipsArchVersion < Mips32Max) ||
+ hasMips64r2();
+ }
+ bool hasMips32r5() const {
+ return (MipsArchVersion >= Mips32r5 && MipsArchVersion < Mips32Max) ||
+ hasMips64r2();
+ }
+ bool hasMips32r6() const {
+ return (MipsArchVersion >= Mips32r6 && MipsArchVersion < Mips32Max) ||
+ hasMips64r6();
+ }
bool hasMips64() const { return MipsArchVersion >= Mips64; }
- bool hasMips64r2() const { return MipsArchVersion == Mips64r2; }
+ bool hasMips64r2() const { return MipsArchVersion >= Mips64r2; }
+ bool hasMips64r3() const { return MipsArchVersion >= Mips64r3; }
+ bool hasMips64r5() const { return MipsArchVersion >= Mips64r5; }
+ bool hasMips64r6() const { return MipsArchVersion >= Mips64r6; }
bool hasCnMips() const { return HasCnMips; }
bool isLittle() const { return IsLittle; }
+ bool isABICalls() const { return !NoABICalls; }
+ bool isFPXX() const { return IsFPXX; }
bool isFP64bit() const { return IsFP64bit; }
- bool isNotFP64bit() const { return !IsFP64bit; }
+ bool useOddSPReg() const { return UseOddSPReg; }
+ bool noOddSPReg() const { return !UseOddSPReg; }
+ bool isNaN2008() const { return IsNaN2008bit; }
bool isGP64bit() const { return IsGP64bit; }
bool isGP32bit() const { return !IsGP64bit; }
+ unsigned getGPRSizeInBytes() const { return isGP64bit() ? 8 : 4; }
bool isSingleFloat() const { return IsSingleFloat; }
- bool isNotSingleFloat() const { return !IsSingleFloat; }
bool hasVFPU() const { return HasVFPU; }
- bool inMips16Mode() const {
- switch (OverrideMode) {
- case NoOverride:
- return InMips16Mode;
- case Mips16Override:
- return true;
- case NoMips16Override:
- return false;
- }
- llvm_unreachable("Unexpected mode");
- }
+ bool inMips16Mode() const { return InMips16Mode; }
bool inMips16ModeDefault() const {
return InMips16Mode;
}
+ // Hard float for mips16 means essentially to compile as soft float
+ // but to use a runtime library for soft float that is written with
+ // native mips32 floating point instructions (those runtime routines
+ // run in mips32 hard float mode).
bool inMips16HardFloat() const {
return inMips16Mode() && InMips16HardFloat;
}
bool inMicroMipsMode() const { return InMicroMipsMode; }
+ bool inMicroMips32r6Mode() const { return InMicroMipsMode && hasMips32r6(); }
bool hasDSP() const { return HasDSP; }
bool hasDSPR2() const { return HasDSPR2; }
bool hasMSA() const { return HasMSA; }
- bool isLinux() const { return IsLinux; }
bool useSmallSection() const { return UseSmallSection; }
bool hasStandardEncoding() const { return !inMips16Mode(); }
- bool mipsSEUsesSoftFloat() const;
+ bool useSoftFloat() const { return IsSoftFloat; }
bool enableLongBranchPass() const {
return hasStandardEncoding() || allowMixed16_32();
}
/// Features related to the presence of specific instructions.
- bool hasSEInReg() const { return HasSEInReg; }
- bool hasCondMov() const { return HasCondMov; }
- bool hasSwap() const { return HasSwap; }
- bool hasBitCount() const { return HasBitCount; }
- bool hasFPIdx() const { return HasFPIdx; }
bool hasExtractInsert() const { return !inMips16Mode() && hasMips32r2(); }
+ bool hasMTHC1() const { return hasMips32r2(); }
- const InstrItineraryData &getInstrItineraryData() const { return InstrItins; }
bool allowMixed16_32() const { return inMips16ModeDefault() |
- AllowMixed16_32;}
+ AllowMixed16_32; }
- bool os16() const { return Os16;};
+ bool os16() const { return Os16; }
bool isTargetNaCl() const { return TargetTriple.isOSNaCl(); }
- bool isNotTargetNaCl() const { return !TargetTriple.isOSNaCl(); }
-// for now constant islands are on for the whole compilation unit but we only
-// really use them if in addition we are in mips16 mode
-//
-static bool useConstantIslands();
+ // for now constant islands are on for the whole compilation unit but we only
+ // really use them if in addition we are in mips16 mode
+ static bool useConstantIslands();
unsigned stackAlignment() const { return hasMips64() ? 16 : 8; }
// Grab relocation model
- Reloc::Model getRelocationModel() const {return RM;}
+ Reloc::Model getRelocationModel() const;
- /// \brief Reset the subtarget for the Mips target.
- void resetSubtarget(MachineFunction *MF);
+ MipsSubtarget &initializeSubtargetDependencies(StringRef CPU, StringRef FS,
+ const TargetMachine &TM);
+ /// Does the system support unaligned memory access.
+ ///
+ /// MIPS32r6/MIPS64r6 require full unaligned access support but does not
+ /// specify which component of the system provides it. Hardware, software, and
+ /// hybrid implementations are all valid.
+ bool systemSupportsUnalignedAccess() const { return hasMips32r6(); }
+ // Set helper classes
+ void setHelperClassesMips16();
+ void setHelperClassesMipsSE();
+
+ const MipsSelectionDAGInfo *getSelectionDAGInfo() const override {
+ return &TSInfo;
+ }
+ const MipsInstrInfo *getInstrInfo() const override { return InstrInfo.get(); }
+ const TargetFrameLowering *getFrameLowering() const override {
+ return FrameLowering.get();
+ }
+ const MipsRegisterInfo *getRegisterInfo() const override {
+ return &InstrInfo->getRegisterInfo();
+ }
+ const MipsTargetLowering *getTargetLowering() const override {
+ return TLInfo.get();
+ }
+ const InstrItineraryData *getInstrItineraryData() const override {
+ return &InstrItins;
+ }
};
} // End llvm namespace
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