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Next PPC long double bits. First cut at constants.

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No compile-time support for constant operations yet,
just format transformations.  Make readers and
writers work.  Split constants into 2 doubles in
Legalize.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42865 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dale Johannesen
2007-10-11 18:07:22 +00:00
parent f9193de25b
commit a471c2ecda
10 changed files with 196 additions and 18 deletions
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lib/VMCore/AsmWriter.cpp
+4 -2
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@@ -519,6 +519,8 @@ static void WriteConstantInt(std::ostream &Out, const Constant *CV,
Out << 'K';
else if (&CFP->getValueAPF().getSemantics() == &APFloat::IEEEquad)
Out << 'L';
else if (&CFP->getValueAPF().getSemantics() == &APFloat::PPCDoubleDouble)
Out << 'M';
else
assert(0 && "Unsupported floating point type");
// api needed to prevent premature destruction
@@ -526,7 +528,7 @@ static void WriteConstantInt(std::ostream &Out, const Constant *CV,
const uint64_t* p = api.getRawData();
uint64_t word = *p;
int shiftcount=60;
int width = CFP->getValueAPF().convertToAPInt().getBitWidth();
int width = api.getBitWidth();
for (int j=0; j<width; j+=4, shiftcount-=4) {
unsigned int nibble = (word>>shiftcount) & 15;
if (nibble < 10)
@@ -535,7 +537,7 @@ static void WriteConstantInt(std::ostream &Out, const Constant *CV,
Out << (unsigned char)(nibble - 10 + 'A');
if (shiftcount == 0) {
word = *(++p);
shiftcount = 60;
shiftcount = 64;
if (width-j-4 < 64)
shiftcount = width-j-4;
}