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Revise per review of previous patch.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41645 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dale Johannesen 2007-08-31 17:03:33 +00:00
parent 1b5dcc34b7
commit ee8476847d
3 changed files with 29 additions and 15 deletions
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2
include/llvm/ADT/StringExtras.h
View File

@ -93,7 +93,7 @@ static inline std::string ftostr(double V) {
return B;
}
static inline std::string ftostr(APFloat V) {
static inline std::string ftostr(const APFloat& V) {
if (&V.getSemantics() == &APFloat::IEEEsingle)
return ftostr(V.convertToDouble());
else if (&V.getSemantics() == &APFloat::IEEEdouble)

36
lib/CodeGen/SelectionDAG/SelectionDAG.cpp
View File

@ -979,20 +979,32 @@ SDOperand SelectionDAG::FoldSetCC(MVT::ValueType VT, SDOperand N1,
APFloat::cmpResult R = N1C->getValueAPF().compare(N2C->getValueAPF());
switch (Cond) {
default: break;
case ISD::SETOEQ:
case ISD::SETEQ: return getConstant(R==APFloat::cmpEqual, VT);
case ISD::SETONE:
case ISD::SETNE: return getConstant(R==APFloat::cmpGreaterThan ||
case ISD::SETEQ: if (R==APFloat::cmpUnordered)
return getNode(ISD::UNDEF, VT);
// fall through
case ISD::SETOEQ: return getConstant(R==APFloat::cmpEqual, VT);
case ISD::SETNE: if (R==APFloat::cmpUnordered)
return getNode(ISD::UNDEF, VT);
// fall through
case ISD::SETONE: return getConstant(R==APFloat::cmpGreaterThan ||
R==APFloat::cmpLessThan, VT);
case ISD::SETOLT:
case ISD::SETLT: return getConstant(R==APFloat::cmpLessThan, VT);
case ISD::SETOGT:
case ISD::SETGT: return getConstant(R==APFloat::cmpGreaterThan, VT);
case ISD::SETOLE:
case ISD::SETLE: return getConstant(R==APFloat::cmpLessThan ||
case ISD::SETLT: if (R==APFloat::cmpUnordered)
return getNode(ISD::UNDEF, VT);
// fall through
case ISD::SETOLT: return getConstant(R==APFloat::cmpLessThan, VT);
case ISD::SETGT: if (R==APFloat::cmpUnordered)
return getNode(ISD::UNDEF, VT);
// fall through
case ISD::SETOGT: return getConstant(R==APFloat::cmpGreaterThan, VT);
case ISD::SETLE: if (R==APFloat::cmpUnordered)
return getNode(ISD::UNDEF, VT);
// fall through
case ISD::SETOLE: return getConstant(R==APFloat::cmpLessThan ||
R==APFloat::cmpEqual, VT);
case ISD::SETOGE:
case ISD::SETGE: return getConstant(R==APFloat::cmpGreaterThan ||
case ISD::SETGE: if (R==APFloat::cmpUnordered)
return getNode(ISD::UNDEF, VT);
// fall through
case ISD::SETOGE: return getConstant(R==APFloat::cmpGreaterThan ||
R==APFloat::cmpEqual, VT);
case ISD::SETO: return getConstant(R!=APFloat::cmpUnordered, VT);
case ISD::SETUO: return getConstant(R==APFloat::cmpUnordered, VT);

6
lib/Target/IA64/IA64ISelDAGToDAG.cpp
View File

@ -404,9 +404,11 @@ SDNode *IA64DAGToDAGISel::Select(SDOperand Op) {
SDOperand Chain = CurDAG->getEntryNode(); // this is a constant, so..
SDOperand V;
if (cast<ConstantFPSDNode>(N)->getValueAPF().isPosZero()) {
ConstantFPSDNode* N2 = cast<ConstantFPSDNode>(N);
if (N2->getValueAPF().isPosZero()) {
V = CurDAG->getCopyFromReg(Chain, IA64::F0, MVT::f64);
} else if (cast<ConstantFPSDNode>(N)->isExactlyValue(APFloat(+1.0))) {
} else if (N2->isExactlyValue(N2->getValueType(0) == MVT::f32 ?
APFloat(+1.0f) : APFloat(+1.0))) {
V = CurDAG->getCopyFromReg(Chain, IA64::F1, MVT::f64);
} else
assert(0 && "Unexpected FP constant!");