From 90fb19ed2c81ed857532c60161108b86d8a1ce94 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Fri, 23 Jan 2004 00:55:21 +0000
Subject: [PATCH] Fix a problem brian ran into with the bytecode reader
 asserting.  It turns out that the problem was actually the writer writing out
 a 'null' value because it didn't normalize it.  This fixes:
 test/Regression/Assembler/2004-01-22-FloatNormalization.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10967 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/VMCore/Constants.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/VMCore/Constants.cpp b/lib/VMCore/Constants.cpp
index e0daca5a66d..8b108c23354 100644
--- a/lib/VMCore/Constants.cpp
+++ b/lib/VMCore/Constants.cpp
@@ -701,6 +701,11 @@ ConstantInt *ConstantInt::get(const Type *Ty, unsigned char V) {
 static ValueMap<double, Type, ConstantFP> FPConstants;
 
 ConstantFP *ConstantFP::get(const Type *Ty, double V) {
+  if (Ty == Type::FloatTy) {
+    // Force the value through memory to normalize it.
+    volatile float Tmp = V;
+    V = Tmp;
+  }
   return FPConstants.getOrCreate(Ty, V);
 }