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

diff --git a/lib/Target/Mips/MipsDelaySlotFiller.cpp b/lib/Target/Mips/MipsDelaySlotFiller.cpp
index b69e5797a1e365688e51b4b0a8fd540e67c0e089..9d104476eeb2360b96e69bf075663b61a37854b1 100644 (file)
--- 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()) {