From 01b2c857ed4371214c36eaa6e3650add5b12cbaa Mon Sep 17 00:00:00 2001
From: Dan Gohman <gohman@apple.com>
Date: Fri, 25 Sep 2009 23:00:48 +0000
Subject: [PATCH] Add a ConstantFP::getInf utility function for creating
 infinity ConstantFPs.

llvm-svn: 82818
---
 include/llvm/Constants.h | 1 +
 lib/VMCore/Constants.cpp | 6 ++++++
 2 files changed, 7 insertions(+)

diff --git a/include/llvm/Constants.h b/include/llvm/Constants.h
index 90cf55daace..9098cdc187b 100644
--- a/include/llvm/Constants.h
+++ b/include/llvm/Constants.h
@@ -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);
diff --git a/lib/VMCore/Constants.cpp b/lib/VMCore/Constants.cpp
index 743462a4ed3..33edf7adf9e 100644
--- a/lib/VMCore/Constants.cpp
+++ b/lib/VMCore/Constants.cpp
@@ -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) &&