use simplified ConstantFP:get method.

llvm-svn: 49979
diff --git a/clang/lib/CodeGen/CGExprConstant.cpp b/clang/lib/CodeGen/CGExprConstant.cpp
index ace494c8..94ff8f7 100644
--- a/clang/lib/CodeGen/CGExprConstant.cpp
+++ b/clang/lib/CodeGen/CGExprConstant.cpp
@@ -50,7 +50,7 @@
     return llvm::ConstantInt::get(E->getValue());
   }
   llvm::Constant *VisitFloatingLiteral(const FloatingLiteral *E) {
-    return llvm::ConstantFP::get(ConvertType(E->getType()), E->getValue());
+    return llvm::ConstantFP::get(E->getValue());
   }
   llvm::Constant *VisitCharacterLiteral(const CharacterLiteral *E) {
     return llvm::ConstantInt::get(ConvertType(E->getType()), E->getValue());