// FIXME: Maybe this should be on by default when Mips16 is specified
//
-static cl::opt<bool> Mixed16_32(
- "mips-mixed-16-32",
- cl::init(false),
- cl::desc("Allow for a mixture of Mips16 "
- "and Mips32 code in a single source file"),
- cl::Hidden);
-
-static cl::opt<bool> Mips_Os16(
- "mips-os16",
- cl::init(false),
- cl::desc("Compile all functions that don' use "
- "floating point as Mips 16"),
- cl::Hidden);
-
-static cl::opt<bool>
-Mips16HardFloat("mips16-hard-float", cl::NotHidden,
- cl::desc("MIPS: mips16 hard float enable."),
- cl::init(false));
-
static cl::opt<bool>
-Mips16ConstantIslands(
- "mips16-constant-islands", cl::NotHidden,
- cl::desc("MIPS: mips16 constant islands enable."),
- cl::init(true));
-
-/// Select the Mips CPU for the given triple and cpu name.
-/// FIXME: Merge with the copy in MipsMCTargetDesc.cpp
-static StringRef selectMipsCPU(Triple TT, StringRef CPU) {
- if (CPU.empty() || CPU == "generic") {
- if (TT.getArch() == Triple::mips || TT.getArch() == Triple::mipsel)
- CPU = "mips32";
- else
- CPU = "mips64";
- }
- return CPU;
-}
-
-void MipsSubtarget::anchor() { }
-
-static std::string computeDataLayout(const MipsSubtarget &ST) {
- std::string Ret = "";
+ Mixed16_32("mips-mixed-16-32", cl::init(false),
+ cl::desc("Allow for a mixture of Mips16 "
+ "and Mips32 code in a single output file"),
+ cl::Hidden);
- // There are both little and big endian mips.
- if (ST.isLittle())
- Ret += "e";
- else
- Ret += "E";
+static cl::opt<bool> Mips_Os16("mips-os16", cl::init(false),
+ cl::desc("Compile all functions that don't use "
+ "floating point as Mips 16"),
+ cl::Hidden);
- Ret += "-m:m";
+static cl::opt<bool> Mips16HardFloat("mips16-hard-float", cl::NotHidden,
+ cl::desc("Enable mips16 hard float."),
+ cl::init(false));
- // Pointers are 32 bit on some ABIs.
- if (!ST.isABI_N64())
- Ret += "-p:32:32";
-
- // 8 and 16 bit integers only need no have natural alignment, but try to
- // align them to 32 bits. 64 bit integers have natural alignment.
- Ret += "-i8:8:32-i16:16:32-i64:64";
+static cl::opt<bool>
+ Mips16ConstantIslands("mips16-constant-islands", cl::NotHidden,
+ cl::desc("Enable mips16 constant islands."),
+ cl::init(true));
- // 32 bit registers are always available and the stack is at least 64 bit
- // aligned. On N64 64 bit registers are also available and the stack is
- // 128 bit aligned.
- if (ST.isABI_N64() || ST.isABI_N32())
- Ret += "-n32:64-S128";
- else
- Ret += "-n32-S64";
+static cl::opt<bool>
+ GPOpt("mgpopt", cl::Hidden,
+ cl::desc("Enable gp-relative addressing of mips small data items"));
- return Ret;
-}
+void MipsSubtarget::anchor() { }
-MipsSubtarget::MipsSubtarget(const std::string &TT, const std::string &CPU,
+MipsSubtarget::MipsSubtarget(const Triple &TT, const std::string &CPU,
const std::string &FS, bool little,
- MipsTargetMachine *_TM)
- : MipsGenSubtargetInfo(TT, CPU, FS), MipsArchVersion(Mips32),
- MipsABI(UnknownABI), IsLittle(little), IsSingleFloat(false),
- IsFPXX(false), IsFP64bit(false), UseOddSPReg(true), IsNaN2008bit(false),
- IsGP64bit(false), HasVFPU(false), HasCnMips(false), IsLinux(true),
- HasMips3_32(false), HasMips3_32r2(false), HasMips4_32(false),
- HasMips4_32r2(false), HasMips5_32r2(false), InMips16Mode(false),
- InMips16HardFloat(Mips16HardFloat), InMicroMipsMode(false), HasDSP(false),
- HasDSPR2(false), AllowMixed16_32(Mixed16_32 | Mips_Os16), Os16(Mips_Os16),
- HasMSA(false), OverrideMode(NoOverride), TM(_TM), TargetTriple(TT),
- DL(computeDataLayout(initializeSubtargetDependencies(CPU, FS, TM))),
- TSInfo(DL), JITInfo(), InstrInfo(MipsInstrInfo::create(*TM)),
- FrameLowering(MipsFrameLowering::create(*TM, *this)),
- TLInfo(MipsTargetLowering::create(*TM)) {
+ const MipsTargetMachine &TM)
+ : MipsGenSubtargetInfo(TargetTuple(TT), CPU, FS),
+ MipsArchVersion(MipsDefault), IsLittle(little), IsSoftFloat(false),
+ IsSingleFloat(false), IsFPXX(false), NoABICalls(false), IsFP64bit(false),
+ UseOddSPReg(true), IsNaN2008bit(false), IsGP64bit(false), HasVFPU(false),
+ HasCnMips(false), HasMips3_32(false), HasMips3_32r2(false),
+ HasMips4_32(false), HasMips4_32r2(false), HasMips5_32r2(false),
+ InMips16Mode(false), InMips16HardFloat(Mips16HardFloat),
+ InMicroMipsMode(false), HasDSP(false), HasDSPR2(false),
+ AllowMixed16_32(Mixed16_32 | Mips_Os16), Os16(Mips_Os16), HasMSA(false),
+ UseTCCInDIV(false), HasEVA(false), TM(TM), TargetTriple(TT), TSInfo(),
+ InstrInfo(
+ MipsInstrInfo::create(initializeSubtargetDependencies(CPU, FS, TM))),
+ FrameLowering(MipsFrameLowering::create(*this)),
+ TLInfo(MipsTargetLowering::create(TM, *this)) {
PreviousInMips16Mode = InMips16Mode;
- // Don't even attempt to generate code for MIPS-I, MIPS-II, MIPS-III, and
- // MIPS-V. They have not been tested and currently exist for the integrated
- // assembler only.
+ if (MipsArchVersion == MipsDefault)
+ MipsArchVersion = Mips32;
+
+ // Don't even attempt to generate code for MIPS-I and MIPS-V. They have not
+ // been tested and currently exist for the integrated assembler only.
if (MipsArchVersion == Mips1)
report_fatal_error("Code generation for MIPS-I is not implemented", false);
- if (MipsArchVersion == Mips2)
- report_fatal_error("Code generation for MIPS-II is not implemented", false);
- if (MipsArchVersion == Mips3)
- report_fatal_error("Code generation for MIPS-III is not implemented",
- false);
if (MipsArchVersion == Mips5)
report_fatal_error("Code generation for MIPS-V is not implemented", false);
- // Assert exactly one ABI was chosen.
- assert(MipsABI != UnknownABI);
- assert((((getFeatureBits() & Mips::FeatureO32) != 0) +
- ((getFeatureBits() & Mips::FeatureEABI) != 0) +
- ((getFeatureBits() & Mips::FeatureN32) != 0) +
- ((getFeatureBits() & Mips::FeatureN64) != 0)) == 1);
-
// Check if Architecture and ABI are compatible.
assert(((!isGP64bit() && (isABI_O32() || isABI_EABI())) ||
(isGP64bit() && (isABI_N32() || isABI_N64()))) &&
report_fatal_error(ISA + " is not compatible with the DSP ASE", false);
}
- // Is the target system Linux ?
- if (TT.find("linux") == std::string::npos)
- IsLinux = false;
+ if (NoABICalls && TM.getRelocationModel() == Reloc::PIC_)
+ report_fatal_error("position-independent code requires '-mabicalls'");
// Set UseSmallSection.
- // TODO: Investigate the IsLinux check. I suspect it's really checking for
- // bare-metal.
- UseSmallSection = !IsLinux && (TM->getRelocationModel() == Reloc::Static);
+ UseSmallSection = GPOpt;
+ if (!NoABICalls && GPOpt) {
+ errs() << "warning: cannot use small-data accesses for '-mabicalls'"
+ << "\n";
+ UseSmallSection = false;
+ }
}
/// This overrides the PostRAScheduler bit in the SchedModel for any CPU.
-bool MipsSubtarget::enablePostMachineScheduler() const { return true; }
+bool MipsSubtarget::enablePostRAScheduler() const { return true; }
void MipsSubtarget::getCriticalPathRCs(RegClassVector &CriticalPathRCs) const {
CriticalPathRCs.clear();
MipsSubtarget &
MipsSubtarget::initializeSubtargetDependencies(StringRef CPU, StringRef FS,
- const TargetMachine *TM) {
- std::string CPUName = selectMipsCPU(TargetTriple, CPU);
-
+ const TargetMachine &TM) {
+ std::string CPUName =
+ MIPS_MC::selectMipsCPU(TargetTuple(TM.getTargetTriple()), CPU);
+
// Parse features string.
ParseSubtargetFeatures(CPUName, FS);
// Initialize scheduling itinerary for the specified CPU.
InstrItins = getInstrItineraryForCPU(CPUName);
- if (InMips16Mode && !TM->Options.UseSoftFloat)
+ if (InMips16Mode && !IsSoftFloat)
InMips16HardFloat = true;
return *this;
}
-//FIXME: This logic for reseting the subtarget along with
-// the helper classes can probably be simplified but there are a lot of
-// cases so we will defer rewriting this to later.
-//
-void MipsSubtarget::resetSubtarget(MachineFunction *MF) {
- bool ChangeToMips16 = false, ChangeToNoMips16 = false;
- DEBUG(dbgs() << "resetSubtargetFeatures" << "\n");
- AttributeSet FnAttrs = MF->getFunction()->getAttributes();
- ChangeToMips16 = FnAttrs.hasAttribute(AttributeSet::FunctionIndex,
- "mips16");
- ChangeToNoMips16 = FnAttrs.hasAttribute(AttributeSet::FunctionIndex,
- "nomips16");
- assert (!(ChangeToMips16 & ChangeToNoMips16) &&
- "mips16 and nomips16 specified on the same function");
- if (ChangeToMips16) {
- if (PreviousInMips16Mode)
- return;
- OverrideMode = Mips16Override;
- PreviousInMips16Mode = true;
- setHelperClassesMips16();
- return;
- } else if (ChangeToNoMips16) {
- if (!PreviousInMips16Mode)
- return;
- OverrideMode = NoMips16Override;
- PreviousInMips16Mode = false;
- setHelperClassesMipsSE();
- return;
- } else {
- if (OverrideMode == NoOverride)
- return;
- OverrideMode = NoOverride;
- DEBUG(dbgs() << "back to default" << "\n");
- if (inMips16Mode() && !PreviousInMips16Mode) {
- setHelperClassesMips16();
- PreviousInMips16Mode = true;
- } else if (!inMips16Mode() && PreviousInMips16Mode) {
- setHelperClassesMipsSE();
- PreviousInMips16Mode = false;
- }
- return;
- }
-}
-
-void MipsSubtarget::setHelperClassesMips16() {
- InstrInfoSE.swap(InstrInfo);
- FrameLoweringSE.swap(FrameLowering);
- TLInfoSE.swap(TLInfo);
- if (!InstrInfo16) {
- InstrInfo.reset(MipsInstrInfo::create(*TM));
- FrameLowering.reset(MipsFrameLowering::create(*TM, *this));
- TLInfo.reset(MipsTargetLowering::create(*TM));
- } else {
- InstrInfo16.swap(InstrInfo);
- FrameLowering16.swap(FrameLowering);
- TLInfo16.swap(TLInfo);
- }
- assert(TLInfo && "null target lowering 16");
- assert(InstrInfo && "null instr info 16");
- assert(FrameLowering && "null frame lowering 16");
-}
-
-void MipsSubtarget::setHelperClassesMipsSE() {
- InstrInfo16.swap(InstrInfo);
- FrameLowering16.swap(FrameLowering);
- TLInfo16.swap(TLInfo);
- if (!InstrInfoSE) {
- InstrInfo.reset(MipsInstrInfo::create(*TM));
- FrameLowering.reset(MipsFrameLowering::create(*TM, *this));
- TLInfo.reset(MipsTargetLowering::create(*TM));
- } else {
- InstrInfoSE.swap(InstrInfo);
- FrameLoweringSE.swap(FrameLowering);
- TLInfoSE.swap(TLInfo);
- }
- assert(TLInfo && "null target lowering in SE");
- assert(InstrInfo && "null instr info SE");
- assert(FrameLowering && "null frame lowering SE");
-}
-
-bool MipsSubtarget::abiUsesSoftFloat() const {
- return TM->Options.UseSoftFloat && !InMips16HardFloat;
-}
-
bool MipsSubtarget::useConstantIslands() {
DEBUG(dbgs() << "use constant islands " << Mips16ConstantIslands << "\n");
return Mips16ConstantIslands;
}
Reloc::Model MipsSubtarget::getRelocationModel() const {
- return TM->getRelocationModel();
+ return TM.getRelocationModel();
}
+
+bool MipsSubtarget::isABI_EABI() const { return getABI().IsEABI(); }
+bool MipsSubtarget::isABI_N64() const { return getABI().IsN64(); }
+bool MipsSubtarget::isABI_N32() const { return getABI().IsN32(); }
+bool MipsSubtarget::isABI_O32() const { return getABI().IsO32(); }
+const MipsABIInfo &MipsSubtarget::getABI() const { return TM.getABI(); }
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