From cfc3fb57372b2ebd580b966469121cba2029bae9 Mon Sep 17 00:00:00 2001
From: Akira Hatanaka <ahatanaka@mips.com>
Date: Wed, 5 Oct 2011 01:09:37 +0000
Subject: [PATCH] Add comments and move assignment statement. If sawStore is
 true, sawLoad does not have to be set.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141147 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/Mips/MipsDelaySlotFiller.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/Target/Mips/MipsDelaySlotFiller.cpp b/lib/Target/Mips/MipsDelaySlotFiller.cpp
index b69e5797a1e..9d104476eeb 100644
--- a/lib/Target/Mips/MipsDelaySlotFiller.cpp
+++ b/lib/Target/Mips/MipsDelaySlotFiller.cpp
@@ -174,10 +174,12 @@ bool Filler::delayHasHazard(MachineBasicBlock::iterator candidate,
   if (candidate->isImplicitDef() || candidate->isKill())
     return true;
 
+  // Loads or stores cannot be moved past a store to the delay slot
+  // and stores cannot be moved past a load. 
   if (candidate->getDesc().mayLoad()) {
-    sawLoad = true;
     if (sawStore)
       return true;
+    sawLoad = true;
   }
 
   if (candidate->getDesc().mayStore()) {