From 6b9028251cfc5ae93431838dfa6db4750e6b67f4 Mon Sep 17 00:00:00 2001
From: Bruno Cardoso Lopes <bruno.cardoso@gmail.com>
Date: Tue, 18 Jan 2011 19:41:41 +0000
Subject: [PATCH] Negative zero is not legal on mips. Patch by Sasa Stankovic

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123766 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/Mips/MipsISelLowering.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/Target/Mips/MipsISelLowering.cpp b/lib/Target/Mips/MipsISelLowering.cpp
index ed9119345e8..224569b2503 100644
--- a/lib/Target/Mips/MipsISelLowering.cpp
+++ b/lib/Target/Mips/MipsISelLowering.cpp
@@ -1570,5 +1570,7 @@ MipsTargetLowering::isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const {
 bool MipsTargetLowering::isFPImmLegal(const APFloat &Imm, EVT VT) const {
   if (VT != MVT::f32 && VT != MVT::f64)
     return false;
+  if (Imm.isNegZero())
+    return false;
   return Imm.isZero();
 }