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add some simple hacky long double support for the CBE. This

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should work for intel long double, but ppc long double aborts
in convert.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57672 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2008-10-17 06:11:48 +00:00
parent b2a1432507
commit abec474236
1 changed files with 15 additions and 5 deletions
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20
lib/Target/CBackend/CBackend.cpp
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@ -1129,11 +1129,21 @@ void CWriter::printConstant(Constant *CPV, bool Static) {
"long double")
<< "*)&FPConstant" << I->second << ')';
} else {
assert(FPC->getType() == Type::FloatTy ||
FPC->getType() == Type::DoubleTy);
double V = FPC->getType() == Type::FloatTy ?
FPC->getValueAPF().convertToFloat() :
FPC->getValueAPF().convertToDouble();
double V;
if (FPC->getType() == Type::FloatTy)
V = FPC->getValueAPF().convertToFloat();
else if (FPC->getType() == Type::DoubleTy)
V = FPC->getValueAPF().convertToDouble();
else {
// Long double. Convert the number to double, discarding precision.
// This is not awesome, but it at least makes the CBE output somewhat
// useful.
APFloat Tmp = FPC->getValueAPF();
bool LosesInfo;
Tmp.convert(APFloat::IEEEdouble, APFloat::rmTowardZero, &LosesInfo);
V = Tmp.convertToDouble();
}
if (IsNAN(V)) {
// The value is NaN