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More DebugLoc propagation in floating-point methods. 

llvm-svn: 63446
This commit is contained in:
Bill Wendling 2009-01-30 23:15:49 +00:00
parent e46e284efd
commit 0bd29743e3
1 changed files with 40 additions and 27 deletions
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65
llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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@ -4132,10 +4132,12 @@ SDValue DAGCombiner::visitFCOPYSIGN(SDNode *N) {
// copysign(x, c1) -> fneg(fabs(x)) iff isneg(c1)
if (!V.isNegative()) {
if (!LegalOperations || TLI.isOperationLegal(ISD::FABS, VT))
return DAG.getNode(ISD::FABS, VT, N0);
return DAG.getNode(ISD::FABS, N->getDebugLoc(), VT, N0);
} else {
if (!LegalOperations || TLI.isOperationLegal(ISD::FNEG, VT))
return DAG.getNode(ISD::FNEG, VT, DAG.getNode(ISD::FABS, VT, N0));
return DAG.getNode(ISD::FNEG, N->getDebugLoc(), VT,
DAG.getNode(ISD::FABS, DebugLoc::getUnknownLoc(),
VT, N0));
}
}
@ -4144,20 +4146,23 @@ SDValue DAGCombiner::visitFCOPYSIGN(SDNode *N) {
// copysign(copysign(x,z), y) -> copysign(x, y)
if (N0.getOpcode() == ISD::FABS || N0.getOpcode() == ISD::FNEG ||
N0.getOpcode() == ISD::FCOPYSIGN)
return DAG.getNode(ISD::FCOPYSIGN, VT, N0.getOperand(0), N1);
return DAG.getNode(ISD::FCOPYSIGN, N->getDebugLoc(), VT,
N0.getOperand(0), N1);
// copysign(x, abs(y)) -> abs(x)
if (N1.getOpcode() == ISD::FABS)
return DAG.getNode(ISD::FABS, VT, N0);
return DAG.getNode(ISD::FABS, N->getDebugLoc(), VT, N0);
// copysign(x, copysign(y,z)) -> copysign(x, z)
if (N1.getOpcode() == ISD::FCOPYSIGN)
return DAG.getNode(ISD::FCOPYSIGN, VT, N0, N1.getOperand(1));
return DAG.getNode(ISD::FCOPYSIGN, N->getDebugLoc(), VT,
N0, N1.getOperand(1));
// copysign(x, fp_extend(y)) -> copysign(x, y)
// copysign(x, fp_round(y)) -> copysign(x, y)
if (N1.getOpcode() == ISD::FP_EXTEND || N1.getOpcode() == ISD::FP_ROUND)
return DAG.getNode(ISD::FCOPYSIGN, VT, N0, N1.getOperand(0));
return DAG.getNode(ISD::FCOPYSIGN, N->getDebugLoc(), VT,
N0, N1.getOperand(0));
return SDValue();
}
@ -4172,7 +4177,7 @@ SDValue DAGCombiner::visitSINT_TO_FP(SDNode *N) {
// fold (sint_to_fp c1) -> c1fp
if (N0C && OpVT != MVT::ppcf128)
return DAG.getNode(ISD::SINT_TO_FP, VT, N0);
return DAG.getNode(ISD::SINT_TO_FP, N->getDebugLoc(), VT, N0);
// If the input is a legal type, and SINT_TO_FP is not legal on this target,
// but UINT_TO_FP is legal on this target, try to convert.
@ -4180,10 +4185,9 @@ SDValue DAGCombiner::visitSINT_TO_FP(SDNode *N) {
TLI.isOperationLegalOrCustom(ISD::UINT_TO_FP, OpVT)) {
// If the sign bit is known to be zero, we can change this to UINT_TO_FP.
if (DAG.SignBitIsZero(N0))
return DAG.getNode(ISD::UINT_TO_FP, VT, N0);
return DAG.getNode(ISD::UINT_TO_FP, N->getDebugLoc(), VT, N0);
}
return SDValue();
}
@ -4195,7 +4199,7 @@ SDValue DAGCombiner::visitUINT_TO_FP(SDNode *N) {
// fold (uint_to_fp c1) -> c1fp
if (N0C && OpVT != MVT::ppcf128)
return DAG.getNode(ISD::UINT_TO_FP, VT, N0);
return DAG.getNode(ISD::UINT_TO_FP, N->getDebugLoc(), VT, N0);
// If the input is a legal type, and UINT_TO_FP is not legal on this target,
// but SINT_TO_FP is legal on this target, try to convert.
@ -4203,7 +4207,7 @@ SDValue DAGCombiner::visitUINT_TO_FP(SDNode *N) {
TLI.isOperationLegalOrCustom(ISD::SINT_TO_FP, OpVT)) {
// If the sign bit is known to be zero, we can change this to SINT_TO_FP.
if (DAG.SignBitIsZero(N0))
return DAG.getNode(ISD::SINT_TO_FP, VT, N0);
return DAG.getNode(ISD::SINT_TO_FP, N->getDebugLoc(), VT, N0);
}
return SDValue();
@ -4216,7 +4220,8 @@ SDValue DAGCombiner::visitFP_TO_SINT(SDNode *N) {
// fold (fp_to_sint c1fp) -> c1
if (N0CFP)
return DAG.getNode(ISD::FP_TO_SINT, VT, N0);
return DAG.getNode(ISD::FP_TO_SINT, N->getDebugLoc(), VT, N0);
return SDValue();
}
@ -4227,7 +4232,8 @@ SDValue DAGCombiner::visitFP_TO_UINT(SDNode *N) {
// fold (fp_to_uint c1fp) -> c1
if (N0CFP && VT != MVT::ppcf128)
return DAG.getNode(ISD::FP_TO_UINT, VT, N0);
return DAG.getNode(ISD::FP_TO_UINT, N->getDebugLoc(), VT, N0);
return SDValue();
}
@ -4239,7 +4245,7 @@ SDValue DAGCombiner::visitFP_ROUND(SDNode *N) {
// fold (fp_round c1fp) -> c1fp
if (N0CFP && N0.getValueType() != MVT::ppcf128)
return DAG.getNode(ISD::FP_ROUND, VT, N0, N1);
return DAG.getNode(ISD::FP_ROUND, N->getDebugLoc(), VT, N0, N1);
// fold (fp_round (fp_extend x)) -> x
if (N0.getOpcode() == ISD::FP_EXTEND && VT == N0.getOperand(0).getValueType())
@ -4250,15 +4256,17 @@ SDValue DAGCombiner::visitFP_ROUND(SDNode *N) {
// This is a value preserving truncation if both round's are.
bool IsTrunc = N->getConstantOperandVal(1) == 1 &&
N0.getNode()->getConstantOperandVal(1) == 1;
return DAG.getNode(ISD::FP_ROUND, VT, N0.getOperand(0),
return DAG.getNode(ISD::FP_ROUND, N->getDebugLoc(), VT, N0.getOperand(0),
DAG.getIntPtrConstant(IsTrunc));
}
// fold (fp_round (copysign X, Y)) -> (copysign (fp_round X), Y)
if (N0.getOpcode() == ISD::FCOPYSIGN && N0.getNode()->hasOneUse()) {
SDValue Tmp = DAG.getNode(ISD::FP_ROUND, VT, N0.getOperand(0), N1);
SDValue Tmp = DAG.getNode(ISD::FP_ROUND, N0.getDebugLoc(), VT,
N0.getOperand(0), N1);
AddToWorkList(Tmp.getNode());
return DAG.getNode(ISD::FCOPYSIGN, VT, Tmp, N0.getOperand(1));
return DAG.getNode(ISD::FCOPYSIGN, N->getDebugLoc(), VT,
Tmp, N0.getOperand(1));
}
return SDValue();
@ -4273,8 +4281,9 @@ SDValue DAGCombiner::visitFP_ROUND_INREG(SDNode *N) {
// fold (fp_round_inreg c1fp) -> c1fp
if (N0CFP && (TLI.isTypeLegal(EVT) || !LegalTypes)) {
SDValue Round = DAG.getConstantFP(*N0CFP->getConstantFPValue(), EVT);
return DAG.getNode(ISD::FP_EXTEND, VT, Round);
return DAG.getNode(ISD::FP_EXTEND, N->getDebugLoc(), VT, Round);
}
return SDValue();
}
@ -4290,7 +4299,7 @@ SDValue DAGCombiner::visitFP_EXTEND(SDNode *N) {
// fold (fp_extend c1fp) -> c1fp
if (N0CFP && VT != MVT::ppcf128)
return DAG.getNode(ISD::FP_EXTEND, VT, N0);
return DAG.getNode(ISD::FP_EXTEND, N->getDebugLoc(), VT, N0);
// Turn fp_extend(fp_round(X, 1)) -> x since the fp_round doesn't affect the
// value of X.
@ -4299,8 +4308,9 @@ SDValue DAGCombiner::visitFP_EXTEND(SDNode *N) {
SDValue In = N0.getOperand(0);
if (In.getValueType() == VT) return In;
if (VT.bitsLT(In.getValueType()))
return DAG.getNode(ISD::FP_ROUND, VT, In, N0.getOperand(1));
return DAG.getNode(ISD::FP_EXTEND, VT, In);
return DAG.getNode(ISD::FP_ROUND, N->getDebugLoc(), VT,
In, N0.getOperand(1));
return DAG.getNode(ISD::FP_EXTEND, N->getDebugLoc(), VT, In);
}
// fold (fpext (load x)) -> (fpext (fptrunc (extload x)))
@ -4308,14 +4318,16 @@ SDValue DAGCombiner::visitFP_EXTEND(SDNode *N) {
((!LegalOperations && !cast<LoadSDNode>(N0)->isVolatile()) ||
TLI.isLoadExtLegal(ISD::EXTLOAD, N0.getValueType()))) {
LoadSDNode *LN0 = cast<LoadSDNode>(N0);
SDValue ExtLoad = DAG.getExtLoad(ISD::EXTLOAD, VT, LN0->getChain(),
SDValue ExtLoad = DAG.getExtLoad(ISD::EXTLOAD, N->getDebugLoc(), VT,
LN0->getChain(),
LN0->getBasePtr(), LN0->getSrcValue(),
LN0->getSrcValueOffset(),
N0.getValueType(),
LN0->isVolatile(), LN0->getAlignment());
CombineTo(N, ExtLoad);
CombineTo(N0.getNode(), DAG.getNode(ISD::FP_ROUND, N0.getValueType(),
ExtLoad, DAG.getIntPtrConstant(1)),
CombineTo(N0.getNode(),
DAG.getNode(ISD::FP_ROUND, N0.getDebugLoc(),
N0.getValueType(), ExtLoad, DAG.getIntPtrConstant(1)),
ExtLoad.getValue(1));
return SDValue(N, 0); // Return N so it doesn't get rechecked!
}
@ -4337,10 +4349,11 @@ SDValue DAGCombiner::visitFNEG(SDNode *N) {
SDValue Int = N0.getOperand(0);
MVT IntVT = Int.getValueType();
if (IntVT.isInteger() && !IntVT.isVector()) {
Int = DAG.getNode(ISD::XOR, IntVT, Int,
Int = DAG.getNode(ISD::XOR, DebugLoc::getUnknownLoc(), IntVT, Int,
DAG.getConstant(IntVT.getIntegerVTSignBit(), IntVT));
AddToWorkList(Int.getNode());
return DAG.getNode(ISD::BIT_CONVERT, N->getValueType(0), Int);
return DAG.getNode(ISD::BIT_CONVERT, N->getDebugLoc(),
N->getValueType(0), Int);
}
}