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[arm fast-isel] Fast-isel only handles simple VTs, so make sure the necessary 

checks are in place.  Some minor cleanup as well.

llvm-svn: 170360
This commit is contained in:
Chad Rosier 2012-12-17 19:59:43 +00:00
parent 95850c24a4
commit 62a144f099
1 changed files with 20 additions and 10 deletions
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30
llvm/lib/Target/ARM/ARMFastISel.cpp
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@ -188,7 +188,7 @@ class ARMFastISel : public FastISel {
bool ARMIsMemCpySmall(uint64_t Len);
bool ARMTryEmitSmallMemCpy(Address Dest, Address Src, uint64_t Len,
unsigned Alignment);
unsigned ARMEmitIntExt(MVT SrcVT, unsigned SrcReg, EVT DestVT, bool isZExt);
unsigned ARMEmitIntExt(MVT SrcVT, unsigned SrcReg, MVT DestVT, bool isZExt);
unsigned ARMMaterializeFP(const ConstantFP *CFP, MVT VT);
unsigned ARMMaterializeInt(const Constant *C, MVT VT);
unsigned ARMMaterializeGV(const GlobalValue *GV, MVT VT);
@ -1608,8 +1608,7 @@ bool ARMFastISel::SelectIToFP(const Instruction *I, bool isSigned) {
// Handle sign-extension.
if (SrcVT == MVT::i16 || SrcVT == MVT::i8) {
MVT DestVT = MVT::i32;
SrcReg = ARMEmitIntExt(SrcVT, SrcReg, DestVT,
SrcReg = ARMEmitIntExt(SrcVT, SrcReg, MVT::i32,
/*isZExt*/!isSigned);
if (SrcReg == 0) return false;
}
@ -1815,7 +1814,9 @@ bool ARMFastISel::SelectBinaryIntOp(const Instruction *I, unsigned ISDOpcode) {
}
bool ARMFastISel::SelectBinaryFPOp(const Instruction *I, unsigned ISDOpcode) {
EVT VT = TLI.getValueType(I->getType(), true);
EVT FPVT = TLI.getValueType(I->getType(), true);
if (!FPVT.isSimple()) return false;
MVT VT = FPVT.getSimpleVT();
// We can get here in the case when we want to use NEON for our fp
// operations, but can't figure out how to. Just use the vfp instructions
@ -1846,7 +1847,7 @@ bool ARMFastISel::SelectBinaryFPOp(const Instruction *I, unsigned ISDOpcode) {
unsigned Op2 = getRegForValue(I->getOperand(1));
if (Op2 == 0) return false;
unsigned ResultReg = createResultReg(TLI.getRegClassFor(VT.getSimpleVT()));
unsigned ResultReg = createResultReg(TLI.getRegClassFor(VT.SimpleTy));
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL,
TII.get(Opc), ResultReg)
.addReg(Op1).addReg(Op2));
@ -2133,7 +2134,9 @@ bool ARMFastISel::SelectRet(const Instruction *I) {
return false;
unsigned SrcReg = Reg + VA.getValNo();
MVT RVVT = TLI.getSimpleValueType(RV->getType());
EVT RVEVT = TLI.getValueType(RV->getType());
if (!RVEVT.isSimple()) return false;
MVT RVVT = RVEVT.getSimpleVT();
MVT DestVT = VA.getValVT();
// Special handling for extended integers.
if (RVVT != DestVT) {
@ -2179,7 +2182,9 @@ unsigned ARMFastISel::ARMSelectCallOp(bool UseReg) {
unsigned ARMFastISel::getLibcallReg(const Twine &Name) {
GlobalValue *GV = new GlobalVariable(Type::getInt32Ty(*Context), false,
GlobalValue::ExternalLinkage, 0, Name);
return ARMMaterializeGV(GV, TLI.getSimpleValueType(GV->getType()));
EVT LCREVT = TLI.getValueType(GV->getType());
if (!LCREVT.isSimple()) return 0;
return ARMMaterializeGV(GV, LCREVT.getSimpleVT());
}
// A quick function that will emit a call for a named libcall in F with the
@ -2591,7 +2596,7 @@ bool ARMFastISel::SelectTrunc(const Instruction *I) {
return true;
}
unsigned ARMFastISel::ARMEmitIntExt(MVT SrcVT, unsigned SrcReg, EVT DestVT,
unsigned ARMFastISel::ARMEmitIntExt(MVT SrcVT, unsigned SrcReg, MVT DestVT,
bool isZExt) {
if (DestVT != MVT::i32 && DestVT != MVT::i16 && DestVT != MVT::i8)
return 0;
@ -2650,9 +2655,14 @@ bool ARMFastISel::SelectIntExt(const Instruction *I) {
unsigned SrcReg = getRegForValue(Src);
if (!SrcReg) return false;
MVT SrcVT = TLI.getSimpleValueType(SrcTy, true);
EVT DestVT = TLI.getValueType(DestTy, true);
EVT SrcEVT, DestEVT;
SrcEVT = TLI.getValueType(SrcTy, true);
DestEVT = TLI.getValueType(DestTy, true);
if (!SrcEVT.isSimple()) return false;
if (!DestEVT.isSimple()) return false;
MVT SrcVT = SrcEVT.getSimpleVT();
MVT DestVT = DestEVT.getSimpleVT();
unsigned ResultReg = ARMEmitIntExt(SrcVT, SrcReg, DestVT, isZExt);
if (ResultReg == 0) return false;
UpdateValueMap(I, ResultReg);