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Remove the assumption that FP's are either float or

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double from some of the many places in the optimizers
it appears, and do something reasonable with x86
long double.
Make APInt::dump() public, remove newline, use it to
dump ConstantSDNode's.
Allow APFloats in FoldingSet.
Expand X86 backend handling of long doubles (conversions
to/from int, mostly).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41967 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dale Johannesen
2007-09-14 22:26:36 +00:00
parent 24f2ea3971
commit 9e3d3abd93
13 changed files with 118 additions and 56 deletions
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28
lib/CodeGen/SelectionDAG/SelectionDAG.cpp
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@ -322,13 +322,7 @@ static void AddNodeIDNode(FoldingSetNodeID &ID, SDNode *N) {
break;
case ISD::TargetConstantFP:
case ISD::ConstantFP: {
APFloat V = cast<ConstantFPSDNode>(N)->getValueAPF();
if (&V.getSemantics() == &APFloat::IEEEdouble)
ID.AddDouble(V.convertToDouble());
else if (&V.getSemantics() == &APFloat::IEEEsingle)
ID.AddDouble((double)V.convertToFloat());
else
assert(0);
ID.AddAPFloat(cast<ConstantFPSDNode>(N)->getValueAPF());
break;
}
case ISD::TargetGlobalAddress:
@ -709,25 +703,21 @@ SDOperand SelectionDAG::getConstantFP(const APFloat& V, MVT::ValueType VT,
MVT::ValueType EltVT =
MVT::isVector(VT) ? MVT::getVectorElementType(VT) : VT;
bool isDouble = (EltVT == MVT::f64);
double Val = isDouble ? V.convertToDouble() : (double)V.convertToFloat();
// Do the map lookup using the actual bit pattern for the floating point
// value, so that we don't have problems with 0.0 comparing equal to -0.0, and
// we don't have issues with SNANs.
unsigned Opc = isTarget ? ISD::TargetConstantFP : ISD::ConstantFP;
// ?? Should we store float/double/longdouble separately in ID?
FoldingSetNodeID ID;
AddNodeIDNode(ID, Opc, getVTList(EltVT), 0, 0);
ID.AddDouble(Val);
ID.AddAPFloat(V);
void *IP = 0;
SDNode *N = NULL;
if ((N = CSEMap.FindNodeOrInsertPos(ID, IP)))
if (!MVT::isVector(VT))
return SDOperand(N, 0);
if (!N) {
N = new ConstantFPSDNode(isTarget,
isDouble ? APFloat(Val) : APFloat((float)Val), EltVT);
N = new ConstantFPSDNode(isTarget, V, EltVT);
CSEMap.InsertNode(N, IP);
AllNodes.push_back(N);
}
@ -3724,9 +3714,15 @@ void SDNode::dump(const SelectionDAG *G) const {
if (const ConstantSDNode *CSDN = dyn_cast<ConstantSDNode>(this)) {
cerr << "<" << CSDN->getValue() << ">";
} else if (const ConstantFPSDNode *CSDN = dyn_cast<ConstantFPSDNode>(this)) {
cerr << "<" << (&CSDN->getValueAPF().getSemantics()==&APFloat::IEEEsingle ?
CSDN->getValueAPF().convertToFloat() :
CSDN->getValueAPF().convertToDouble()) << ">";
if (&CSDN->getValueAPF().getSemantics()==&APFloat::IEEEsingle)
cerr << "<" << CSDN->getValueAPF().convertToFloat() << ">";
else if (&CSDN->getValueAPF().getSemantics()==&APFloat::IEEEdouble)
cerr << "<" << CSDN->getValueAPF().convertToDouble() << ">";
else {
cerr << "<APFloat(";
CSDN->getValueAPF().convertToAPInt().dump();
cerr << ")>";
}
} else if (const GlobalAddressSDNode *GADN =
dyn_cast<GlobalAddressSDNode>(this)) {
int offset = GADN->getOffset();