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Add a ConstantFP::getInf utility function for creating infinity ConstantFPs.

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llvm-svn: 82818
This commit is contained in:
Dan Gohman 2009-09-25 23:00:48 +00:00
parent 7c98ffa2b6
commit 01b2c857ed
2 changed files with 7 additions and 0 deletions
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1
include/llvm/Constants.h
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@ -258,6 +258,7 @@ public:
static Constant* get(const Type* Ty, const StringRef& Str);
static ConstantFP* get(LLVMContext &Context, const APFloat& V);
static ConstantFP* getNegativeZero(const Type* Ty);
static ConstantFP* getInf(const Type* Ty, bool negative = false);
/// isValueValidForType - return true if Ty is big enough to represent V.
static bool isValueValidForType(const Type *Ty, const APFloat& V);

6
lib/VMCore/Constants.cpp
View File

@ -436,6 +436,12 @@ ConstantFP* ConstantFP::get(LLVMContext &Context, const APFloat& V) {
return Slot;
}
ConstantFP *ConstantFP::getInf(const Type *Ty, bool Negative) {
const fltSemantics &Semantics = *TypeToFloatSemantics(Ty);
return ConstantFP::get(Ty->getContext(),
APFloat::getInf(Semantics, Negative));
}
ConstantFP::ConstantFP(const Type *Ty, const APFloat& V)
: Constant(Ty, ConstantFPVal, 0, 0), Val(V) {
assert(&V.getSemantics() == TypeToFloatSemantics(Ty) &&