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Next round of APFloat changes.

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Use APFloat in UpgradeParser and AsmParser.
Change all references to ConstantFP to use the
APFloat interface rather than double.  Remove
the ConstantFP double interfaces.
Use APFloat functions for constant folding arithmetic
and comparisons.
(There are still way too many places APFloat is
just a wrapper around host float/double, but we're
getting there.)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41747 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dale Johannesen
2007-09-06 18:13:44 +00:00
parent 325be7c608
commit 43421b3dd7
32 changed files with 540 additions and 437 deletions
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27
tools/llvm2cpp/CppWriter.cpp
View File

@ -209,25 +209,30 @@ CppWriter::error(const std::string& msg) {
// result so that we don't lose precision.
void
CppWriter::printCFP(const ConstantFP *CFP) {
APFloat APF = APFloat(CFP->getValueAPF()); // copy
if (CFP->getType() == Type::FloatTy)
APF.convert(APFloat::IEEEdouble, APFloat::rmNearestTiesToEven);
Out << "ConstantFP::get(";
if (CFP->getType() == Type::DoubleTy)
Out << "Type::DoubleTy, ";
else
Out << "Type::FloatTy, ";
Out << "APFloat(";
#if HAVE_PRINTF_A
char Buffer[100];
sprintf(Buffer, "%A", CFP->getValue());
sprintf(Buffer, "%A", APF.convertToDouble());
if ((!strncmp(Buffer, "0x", 2) ||
!strncmp(Buffer, "-0x", 3) ||
!strncmp(Buffer, "+0x", 3)) &&
(atof(Buffer) == CFP->getValue()))
APF.bitwiseIsEqual(APFloat(atof(Buffer)))) {
if (CFP->getType() == Type::DoubleTy)
Out << "BitsToDouble(" << Buffer << ")";
else
Out << "BitsToFloat(" << Buffer << ")";
else {
Out << "BitsToFloat((float)" << Buffer << ")";
Out << ")";
} else {
#endif
std::string StrVal = ftostr(CFP->getValue());
std::string StrVal = ftostr(CFP->getValueAPF());
while (StrVal[0] == ' ')
StrVal.erase(StrVal.begin());
@ -237,17 +242,21 @@ CppWriter::printCFP(const ConstantFP *CFP) {
if (((StrVal[0] >= '0' && StrVal[0] <= '9') ||
((StrVal[0] == '-' || StrVal[0] == '+') &&
(StrVal[1] >= '0' && StrVal[1] <= '9'))) &&
(atof(StrVal.c_str()) == CFP->getValue()))
(CFP->isExactlyValue(atof(StrVal.c_str())))) {
if (CFP->getType() == Type::DoubleTy)
Out << StrVal;
else
Out << StrVal;
Out << StrVal << "f";
}
else if (CFP->getType() == Type::DoubleTy)
Out << "BitsToDouble(0x" << std::hex << DoubleToBits(CFP->getValue())
Out << "BitsToDouble(0x" << std::hex
<< DoubleToBits(CFP->getValueAPF().convertToDouble())
<< std::dec << "ULL) /* " << StrVal << " */";
else
Out << "BitsToFloat(0x" << std::hex << FloatToBits(CFP->getValue())
Out << "BitsToFloat(0x" << std::hex
<< FloatToBits(CFP->getValueAPF().convertToFloat())
<< std::dec << "U) /* " << StrVal << " */";
Out << ")";
#if HAVE_PRINTF_A
}
#endif