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Culling out use of unions for converting FP to bits and vice versa.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22838 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Laskey
2005-08-17 19:34:49 +00:00
parent 8482dd894d
commit cb6682fa44
13 changed files with 65 additions and 209 deletions
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12
lib/VMCore/AsmWriter.cpp
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@@ -29,6 +29,7 @@
#include "llvm/Support/CFG.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/Support/MathExtras.h"
#include <algorithm>
using namespace llvm;
@@ -431,18 +432,9 @@ static void WriteConstantInt(std::ostream &Out, const Constant *CV,
// Otherwise we could not reparse it to exactly the same value, so we must
// output the string in hexadecimal format!
//
// Behave nicely in the face of C TBAA rules... see:
// http://www.nullstone.com/htmls/category/aliastyp.htm
//
union {
double D;
uint64_t U;
} V;
V.D = CFP->getValue();
assert(sizeof(double) == sizeof(uint64_t) &&
"assuming that double is 64 bits!");
Out << "0x" << utohexstr(V.U);
Out << "0x" << utohexstr(DoubleToBits(CFP->getValue()));
} else if (isa<ConstantAggregateZero>(CV)) {
Out << "zeroinitializer";