From 8c1419fb8939cb5e0c260208c07b31b3c156b6c1 Mon Sep 17 00:00:00 2001
From: Joel Dice <joel.dice@gmail.com>
Date: Thu, 4 Apr 2013 20:02:49 -0600
Subject: [PATCH] jump to target if JumpIfFloatNotEqual comparison is unordered

A dcmpl or dcmpg followed by an ifneq should take the branch if an NaN
is involved.
---
 src/codegen/target/x86/encode.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/codegen/target/x86/encode.cpp b/src/codegen/target/x86/encode.cpp
index e2f1ee287e..97c85d5fc3 100644
--- a/src/codegen/target/x86/encode.cpp
+++ b/src/codegen/target/x86/encode.cpp
@@ -251,6 +251,7 @@ void branchFloat(Context* c, lir::TernaryOperation op, lir::Constant* target) {
 
   case lir::JumpIfFloatNotEqual:
     conditional(c, 0x85, target);
+    conditional(c, 0x8a, target);
     break;
 
   case lir::JumpIfFloatLess: