- // When only the target triple is specified and is
- // a allegrex target, set the features. We also match
- // big and little endian allegrex cores (dont really
- // know if a big one exists)
- if (TT.find("mipsallegrex") != std::string::npos ||
- TT.find("psp") != std::string::npos) {
- MipsABI = EABI;
- IsSingleFloat = true;
- MipsArchVersion = Mips2;
- HasVFPU = true; // Enables Allegrex Vector FPU (not supported yet)
- HasSEInReg = true;
- HasBitCount = true;
+ // Set UseSmallSection.
+ UseSmallSection = !IsLinux && (RM == Reloc::Static);
+ // set some subtarget specific features
+ if (inMips16Mode())
+ HasBitCount=false;
+}
+
+bool
+MipsSubtarget::enablePostRAScheduler(CodeGenOpt::Level OptLevel,
+ TargetSubtargetInfo::AntiDepBreakMode &Mode,
+ RegClassVector &CriticalPathRCs) const {
+ Mode = TargetSubtargetInfo::ANTIDEP_NONE;
+ CriticalPathRCs.clear();
+ CriticalPathRCs.push_back(hasMips64() ?
+ &Mips::GPR64RegClass : &Mips::GPR32RegClass);
+ return OptLevel >= CodeGenOpt::Aggressive;
+}
+
+//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;
+ TM->setHelperClassesMips16();
+ return;
+ } else if (ChangeToNoMips16) {
+ if (!PreviousInMips16Mode)
+ return;
+ OverrideMode = NoMips16Override;
+ PreviousInMips16Mode = false;
+ TM->setHelperClassesMipsSE();
+ return;
+ } else {
+ if (OverrideMode == NoOverride)
+ return;
+ OverrideMode = NoOverride;
+ DEBUG(dbgs() << "back to default" << "\n");
+ if (inMips16Mode() && !PreviousInMips16Mode) {
+ TM->setHelperClassesMips16();
+ PreviousInMips16Mode = true;
+ } else if (!inMips16Mode() && PreviousInMips16Mode) {
+ TM->setHelperClassesMipsSE();
+ PreviousInMips16Mode = false;
+ }
+ return;