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Rename variables to avoid confusion. No functionallity change intended.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144377 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chad Rosier 2011-11-11 06:27:41 +00:00
parent a07d3fc693
commit 1c47de87c7
1 changed files with 18 additions and 18 deletions
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36
lib/Target/ARM/ARMFastISel.cpp
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@ -563,9 +563,9 @@ unsigned ARMFastISel::ARMMaterializeInt(const Constant *C, EVT VT) {
// Use MVN to emit negative constants.
if (VT == MVT::i32 && Subtarget->hasV6T2Ops() && CI->isNegative()) {
unsigned Imm = (unsigned)~(CI->getSExtValue());
bool EncodeImm = isThumb2 ? (ARM_AM::getT2SOImmVal(Imm) != -1) :
bool UseImm = isThumb2 ? (ARM_AM::getT2SOImmVal(Imm) != -1) :
(ARM_AM::getSOImmVal(Imm) != -1);
if (EncodeImm) {
if (UseImm) {
unsigned Opc = isThumb2 ? ARM::t2MVNi : ARM::MVNi;
unsigned ImmReg = createResultReg(TLI.getRegClassFor(MVT::i32));
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL,
@ -1232,25 +1232,25 @@ bool ARMFastISel::ARMEmitCmp(const Value *Src1Value, const Value *Src2Value,
// Check to see if the 2nd operand is a constant that we can encode directly
// in the compare.
int EncodedImm = 0;
bool EncodeImm = false;
int Imm = 0;
bool UseImm = false;
bool isNegativeImm = false;
if (const ConstantInt *ConstInt = dyn_cast<ConstantInt>(Src2Value)) {
if (SrcVT == MVT::i32 || SrcVT == MVT::i16 || SrcVT == MVT::i8 ||
SrcVT == MVT::i1) {
const APInt &CIVal = ConstInt->getValue();
EncodedImm = (isZExt) ? (int)CIVal.getZExtValue() : (int)CIVal.getSExtValue();
if (EncodedImm < 0) {
Imm = (isZExt) ? (int)CIVal.getZExtValue() : (int)CIVal.getSExtValue();
if (Imm < 0) {
isNegativeImm = true;
EncodedImm = -EncodedImm;
Imm = -Imm;
}
EncodeImm = isThumb2 ? (ARM_AM::getT2SOImmVal(EncodedImm) != -1) :
(ARM_AM::getSOImmVal(EncodedImm) != -1);
UseImm = isThumb2 ? (ARM_AM::getT2SOImmVal(Imm) != -1) :
(ARM_AM::getSOImmVal(Imm) != -1);
}
} else if (const ConstantFP *ConstFP = dyn_cast<ConstantFP>(Src2Value)) {
if (SrcVT == MVT::f32 || SrcVT == MVT::f64)
if (ConstFP->isZero() && !ConstFP->isNegative())
EncodeImm = true;
UseImm = true;
}
unsigned CmpOpc;
@ -1261,11 +1261,11 @@ bool ARMFastISel::ARMEmitCmp(const Value *Src1Value, const Value *Src2Value,
// TODO: Verify compares.
case MVT::f32:
isICmp = false;
CmpOpc = EncodeImm ? ARM::VCMPEZS : ARM::VCMPES;
CmpOpc = UseImm ? ARM::VCMPEZS : ARM::VCMPES;
break;
case MVT::f64:
isICmp = false;
CmpOpc = EncodeImm ? ARM::VCMPEZD : ARM::VCMPED;
CmpOpc = UseImm ? ARM::VCMPEZD : ARM::VCMPED;
break;
case MVT::i1:
case MVT::i8:
@ -1274,12 +1274,12 @@ bool ARMFastISel::ARMEmitCmp(const Value *Src1Value, const Value *Src2Value,
// Intentional fall-through.
case MVT::i32:
if (isThumb2) {
if (!EncodeImm)
if (!UseImm)
CmpOpc = ARM::t2CMPrr;
else
CmpOpc = isNegativeImm ? ARM::t2CMNzri : ARM::t2CMPri;
} else {
if (!EncodeImm)
if (!UseImm)
CmpOpc = ARM::CMPrr;
else
CmpOpc = isNegativeImm ? ARM::CMNzri : ARM::CMPri;
@ -1291,7 +1291,7 @@ bool ARMFastISel::ARMEmitCmp(const Value *Src1Value, const Value *Src2Value,
if (SrcReg1 == 0) return false;
unsigned SrcReg2;
if (!EncodeImm) {
if (!UseImm) {
SrcReg2 = getRegForValue(Src2Value);
if (SrcReg2 == 0) return false;
}
@ -1302,14 +1302,14 @@ bool ARMFastISel::ARMEmitCmp(const Value *Src1Value, const Value *Src2Value,
ResultReg = ARMEmitIntExt(SrcVT, SrcReg1, MVT::i32, isZExt);
if (ResultReg == 0) return false;
SrcReg1 = ResultReg;
if (!EncodeImm) {
if (!UseImm) {
ResultReg = ARMEmitIntExt(SrcVT, SrcReg2, MVT::i32, isZExt);
if (ResultReg == 0) return false;
SrcReg2 = ResultReg;
}
}
if (!EncodeImm) {
if (!UseImm) {
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL,
TII.get(CmpOpc))
.addReg(SrcReg1).addReg(SrcReg2));
@ -1320,7 +1320,7 @@ bool ARMFastISel::ARMEmitCmp(const Value *Src1Value, const Value *Src2Value,
// Only add immediate for icmp as the immediate for fcmp is an implicit 0.0.
if (isICmp)
MIB.addImm(EncodedImm);
MIB.addImm(Imm);
AddOptionalDefs(MIB);
}