diff options
Diffstat (limited to 'lib/VMCore/AsmWriter.cpp')
-rw-r--r-- | lib/VMCore/AsmWriter.cpp | 25 |
1 files changed, 16 insertions, 9 deletions
diff --git a/lib/VMCore/AsmWriter.cpp b/lib/VMCore/AsmWriter.cpp index 7b39efb7c7..4a7fde1905 100644 --- a/lib/VMCore/AsmWriter.cpp +++ b/lib/VMCore/AsmWriter.cpp @@ -708,8 +708,7 @@ static void WriteConstantInternal(raw_ostream &Out, const Constant *CV, } if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV)) { - if (&CFP->getValueAPF().getSemantics() == &APFloat::IEEEhalf || - &CFP->getValueAPF().getSemantics() == &APFloat::IEEEsingle || + if (&CFP->getValueAPF().getSemantics() == &APFloat::IEEEsingle || &CFP->getValueAPF().getSemantics() == &APFloat::IEEEdouble) { // We would like to output the FP constant value in exponential notation, // but we cannot do this if doing so will lose precision. Check here to @@ -759,16 +758,20 @@ static void WriteConstantInternal(raw_ostream &Out, const Constant *CV, return; } - // Some form of long double. These appear as a magic letter identifying - // the type, then a fixed number of hex digits. + // Either half, or some form of long double. + // These appear as a magic letter identifying the type, then a + // fixed number of hex digits. Out << "0x"; + // Bit position, in the current word, of the next nibble to print. + int shiftcount; + if (&CFP->getValueAPF().getSemantics() == &APFloat::x87DoubleExtended) { Out << 'K'; // api needed to prevent premature destruction APInt api = CFP->getValueAPF().bitcastToAPInt(); const uint64_t* p = api.getRawData(); uint64_t word = p[1]; - int shiftcount=12; + shiftcount = 12; int width = api.getBitWidth(); for (int j=0; j<width; j+=4, shiftcount-=4) { unsigned int nibble = (word>>shiftcount) & 15; @@ -784,17 +787,21 @@ static void WriteConstantInternal(raw_ostream &Out, const Constant *CV, } } return; - } else if (&CFP->getValueAPF().getSemantics() == &APFloat::IEEEquad) + } else if (&CFP->getValueAPF().getSemantics() == &APFloat::IEEEquad) { + shiftcount = 60; Out << 'L'; - else if (&CFP->getValueAPF().getSemantics() == &APFloat::PPCDoubleDouble) + } else if (&CFP->getValueAPF().getSemantics() == &APFloat::PPCDoubleDouble) { + shiftcount = 60; Out << 'M'; - else + } else if (&CFP->getValueAPF().getSemantics() == &APFloat::IEEEhalf) { + shiftcount = 12; + Out << 'H'; + } else llvm_unreachable("Unsupported floating point type"); // api needed to prevent premature destruction APInt api = CFP->getValueAPF().bitcastToAPInt(); const uint64_t* p = api.getRawData(); uint64_t word = *p; - int shiftcount=60; int width = api.getBitWidth(); for (int j=0; j<width; j+=4, shiftcount-=4) { unsigned int nibble = (word>>shiftcount) & 15; |