From 22bed5db2f34a5b351e133d24603d12f45e96e44 Mon Sep 17 00:00:00 2001
From: NAKAMURA Takumi <geek4civic@gmail.com>
Date: Thu, 16 Feb 2012 08:12:24 +0000
Subject: [PATCH] VMCore/AsmWriter.cpp: Tweak to check #INF and #NAN earlier.

With MSVCRT, prior checker missed emission of #INF and #NAN.

FIXME: Checking should be simpler.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150667 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/VMCore/AsmWriter.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/VMCore/AsmWriter.cpp b/lib/VMCore/AsmWriter.cpp
index 21d4566a080..6874906cfdd 100644
--- a/lib/VMCore/AsmWriter.cpp
+++ b/lib/VMCore/AsmWriter.cpp
@@ -719,7 +719,9 @@ static void WriteConstantInternal(raw_ostream &Out, const Constant *CV,
       bool ignored;
       bool isHalf = &CFP->getValueAPF().getSemantics()==&APFloat::IEEEhalf;
       bool isDouble = &CFP->getValueAPF().getSemantics()==&APFloat::IEEEdouble;
-      if (!isHalf) {
+      bool isInf = CFP->getValueAPF().isInfinity();
+      bool isNaN = CFP->getValueAPF().isNaN();
+      if (!isHalf && !isInf && !isNaN) {
         double Val = isDouble ? CFP->getValueAPF().convertToDouble() :
                                 CFP->getValueAPF().convertToFloat();
         SmallString<128> StrVal;