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Use ANSI-approved way of getting the value infinity (otherwise VC++ won't compile it)

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llvm-svn: 21662
This commit is contained in:
Jeff Cohen 2005-05-03 03:13:01 +00:00
parent 0c484ea7de
commit d33e8df701
1 changed files with 4 additions and 3 deletions
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7
lib/VMCore/ConstantFolding.cpp
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@ -24,6 +24,7 @@
#include "llvm/DerivedTypes.h"
#include "llvm/Function.h"
#include "llvm/Support/GetElementPtrTypeIterator.h"
#include <limits>
#include <cmath>
using namespace llvm;
@ -471,9 +472,9 @@ struct DirectFPRules
return ConstantClass::get(*Ty, Result);
}
static Constant *Div(const ConstantClass *V1, const ConstantClass *V2) {
if (V2->isExactlyValue(0.0)) return ConstantClass::get(*Ty, INFINITY);
if (V2->isExactlyValue(-0.0)) return ConstantClass::get(*Ty, -INFINITY);
if (V2->isNullValue()) return 0;
BuiltinType inf = std::numeric_limits<BuiltinType>::infinity();
if (V2->isExactlyValue(0.0)) return ConstantClass::get(*Ty, inf);
if (V2->isExactlyValue(-0.0)) return ConstantClass::get(*Ty, -inf);
BuiltinType R = (BuiltinType)V1->getValue() / (BuiltinType)V2->getValue();
return ConstantClass::get(*Ty, R);
}