From 3d45a853db014fdddcdb79424e663dfed5eccbc7 Mon Sep 17 00:00:00 2001
From: Dan Gohman <gohman@apple.com>
Date: Thu, 3 Sep 2009 22:53:57 +0000
Subject: LLVM currently represents floating-point negation as -0.0 - x. Fix
 FastISel to recognize this pattern and emit a floating-point negation using
 xor.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80963 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/CodeGen/FastISel.h | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'include/llvm/CodeGen')

diff --git a/include/llvm/CodeGen/FastISel.h b/include/llvm/CodeGen/FastISel.h
index b2cc94db4e..6cd551976c 100644
--- a/include/llvm/CodeGen/FastISel.h
+++ b/include/llvm/CodeGen/FastISel.h
@@ -300,6 +300,8 @@ protected:
 private:
   bool SelectBinaryOp(User *I, ISD::NodeType ISDOpcode);
 
+  bool SelectFNeg(User *I);
+
   bool SelectGetElementPtr(User *I);
 
   bool SelectCall(User *I);
-- 
cgit v1.2.3-70-g09d2