-//=====-- MipsSubtarget.h - Define Subtarget for the Mips -----*- C++ -*--====//
+//===-- MipsSubtarget.h - Define Subtarget for the Mips ---------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
//
//===----------------------------------------------------------------------===//
//
-// This file declares the Mips specific subclass of TargetSubtarget.
+// This file declares the Mips specific subclass of TargetSubtargetInfo.
//
//===----------------------------------------------------------------------===//
-#ifndef MIPSSUBTARGET_H
-#define MIPSSUBTARGET_H
-
-#include "llvm/Target/TargetSubtarget.h"
-#include "llvm/Target/TargetMachine.h"
+#ifndef LLVM_LIB_TARGET_MIPS_MIPSSUBTARGET_H
+#define LLVM_LIB_TARGET_MIPS_MIPSSUBTARGET_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"
+#include "MipsABIInfo.h"
#include <string>
+#define GET_SUBTARGETINFO_HEADER
+#include "MipsGenSubtargetInfo.inc"
+
namespace llvm {
+class StringRef;
-class MipsSubtarget : public TargetSubtarget {
+class MipsTargetMachine;
-public:
- enum MipsABIEnum {
- O32, O64, N32, N64, EABI
- };
-
-protected:
+class MipsSubtarget : public MipsGenSubtargetInfo {
+ virtual void anchor();
enum MipsArchEnum {
- Mips1, Mips2, Mips3, Mips4, Mips32, Mips32r2
+ Mips1, Mips2, Mips32, Mips32r2, Mips32r6, Mips3, Mips4, Mips5, Mips64,
+ Mips64r2, Mips64r6
};
- // Mips architecture version
+ // Mips architecture version
MipsArchEnum MipsArchVersion;
- // Mips supported ABIs
- MipsABIEnum MipsABI;
+ // Selected ABI
+ MipsABIInfo ABI;
// IsLittle - The target is Little Endian
bool IsLittle;
// 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;
// HasVFPU - Processor has a vector floating point unit.
bool HasVFPU;
+ // CPU supports cnMIPS (Cavium Networks Octeon CPU).
+ bool HasCnMips;
+
// isLinux - Target system is Linux. Is false we consider ELFOS for now.
bool IsLinux;
+ // UseSmallSection - Small section is used.
+ bool UseSmallSection;
+
/// Features related to the presence of specific instructions.
-
- // HasSEInReg - SEB and SEH (signext in register) instructions.
- bool HasSEInReg;
- // HasCondMov - Conditional mov (MOVZ, MOVN) instructions.
- bool HasCondMov;
+ // HasMips3_32 - The subset of MIPS-III instructions added to MIPS32
+ bool HasMips3_32;
- // HasMulDivAdd - Multiply add and sub (MADD, MADDu, MSUB, MSUBu)
- // instructions.
- bool HasMulDivAdd;
+ // HasMips3_32r2 - The subset of MIPS-III instructions added to MIPS32r2
+ bool HasMips3_32r2;
- // HasMinMax - MIN and MAX instructions.
- bool HasMinMax;
+ // HasMips4_32 - Has the subset of MIPS-IV present in MIPS32
+ bool HasMips4_32;
- // HasSwap - Byte and half swap instructions.
- bool HasSwap;
+ // HasMips4_32r2 - Has the subset of MIPS-IV present in MIPS32r2
+ bool HasMips4_32r2;
- // HasBitCount - Count leading '1' and '0' bits.
- bool HasBitCount;
+ // HasMips5_32r2 - Has the subset of MIPS-V present in MIPS32r2
+ bool HasMips5_32r2;
+
+ // InMips16 -- can process Mips16 instructions
+ bool InMips16Mode;
+
+ // Mips16 hard float
+ bool InMips16HardFloat;
+
+ // PreviousInMips16 -- the function we just processed was in Mips 16 Mode
+ bool PreviousInMips16Mode;
+
+ // InMicroMips -- can process MicroMips instructions
+ bool InMicroMipsMode;
+
+ // HasDSP, HasDSPR2 -- supports DSP ASE.
+ bool HasDSP, HasDSPR2;
+
+ // Allow mixed Mips16 and Mips32 in one source file
+ bool AllowMixed16_32;
+
+ // Optimize for space by compiling all functions as Mips 16 unless
+ // it needs floating point. Functions needing floating point are
+ // compiled as Mips32
+ bool Os16;
+
+ // HasMSA -- supports MSA ASE.
+ bool HasMSA;
InstrItineraryData InstrItins;
+ // We can override the determination of whether we are in mips16 mode
+ // as from the command line
+ enum {NoOverride, Mips16Override, NoMips16Override} OverrideMode;
+
+ const MipsTargetMachine *TM;
+
+ Triple TargetTriple;
+
+ const DataLayout DL; // Calculates type size & alignment
+ const MipsSelectionDAGInfo TSInfo;
+ std::unique_ptr<const MipsInstrInfo> InstrInfo;
+ std::unique_ptr<const MipsFrameLowering> FrameLowering;
+ std::unique_ptr<const MipsTargetLowering> TLInfo;
+
public:
+ /// 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_O32() const { return MipsABI == O32; }
- unsigned getTargetABI() const { return MipsABI; }
+ bool isABI_EABI() const { return ABI.IsEABI(); }
+ bool isABI_N64() const { return ABI.IsN64(); }
+ bool isABI_N32() const { return ABI.IsN32(); }
+ bool isABI_O32() const { return ABI.IsO32(); }
+ bool isABI_FPXX() const { return isABI_O32() && IsFPXX; }
+ const MipsABIInfo &getABI() const { return ABI; }
/// This constructor initializes the data members to match that
/// of the specified triple.
- MipsSubtarget(const std::string &TT, const std::string &FS, bool little);
-
- /// ParseSubtargetFeatures - Parses features string setting specified
+ MipsSubtarget(const std::string &TT, const std::string &CPU,
+ 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.
- std::string ParseSubtargetFeatures(const std::string &FS,
- const std::string &CPU);
+ void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
+
+ 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 != Mips3 &&
+ MipsArchVersion != Mips4 && MipsArchVersion != Mips5;
+ }
+ bool hasMips32r2() const {
+ return MipsArchVersion == Mips32r2 || MipsArchVersion == Mips32r6 ||
+ MipsArchVersion == Mips64r2 || MipsArchVersion == Mips64r6;
+ }
+ bool hasMips32r6() const {
+ return MipsArchVersion == Mips32r6 || MipsArchVersion == Mips64r6;
+ }
+ bool hasMips64() const { return MipsArchVersion >= Mips64; }
+ bool hasMips64r2() const {
+ return MipsArchVersion == Mips64r2 || MipsArchVersion == Mips64r6;
+ }
+ bool hasMips64r6() const { return MipsArchVersion == Mips64r6; }
- bool isMips1() const { return MipsArchVersion == Mips1; }
- bool isMips32() const { return MipsArchVersion >= Mips32; }
- bool isMips32r2() const { return MipsArchVersion == Mips32r2; }
+ 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 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 { 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 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 abiUsesSoftFloat() const;
+
+ 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 hasMulDivAdd() const { return HasMulDivAdd; }
- bool hasMinMax() const { return HasMinMax; }
- bool hasSwap() const { return HasSwap; }
- bool hasBitCount() const { return HasBitCount; }
+ bool hasExtractInsert() const { return !inMips16Mode() && hasMips32r2(); }
+ bool hasMTHC1() const { return hasMips32r2(); }
+
+ bool allowMixed16_32() const { return inMips16ModeDefault() |
+ AllowMixed16_32;}
+
+ bool os16() const { return Os16;};
+
+ bool isTargetNaCl() 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();
+
+ unsigned stackAlignment() const { return hasMips64() ? 16 : 8; }
+
+ // Grab relocation model
+ Reloc::Model getRelocationModel() const;
+
+ 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 DataLayout *getDataLayout() const override { return &DL; }
+ 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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