[llvm] r248625 - DAGCombiner: Check if store is volatile first

[Matt Arsenault via llvm-commits]

Author: arsenm
Date: Fri Sep 25 17:06:19 2015
New Revision: 248625

URL: http://llvm.org/viewvc/llvm-project?rev=248625&view=rev
Log:
DAGCombiner: Check if store is volatile first

This is the simpler check. NFC.

Modified:
    llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp?rev=248625&r1=248624&r2=248625&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp Fri Sep 25 17:06:19 2015
@@ -14519,6 +14519,9 @@ bool DAGCombiner::findBetterNeighborChai
     if (Index != St && !SDValue(Index, 0)->hasOneUse())
       break;
 
+    if (Index->isVolatile() || Index->isIndexed())
+      break;
+
     // Find the base pointer and offset for this memory node.
     BaseIndexOffset Ptr = BaseIndexOffset::match(Index->getBasePtr());
 
@@ -14526,9 +14529,6 @@ bool DAGCombiner::findBetterNeighborChai
     if (!Ptr.equalBaseIndex(BasePtr))
       break;
 
-    if (Index->isVolatile() || Index->isIndexed())
-      break;
-
     // Find the next memory operand in the chain. If the next operand in the
     // chain is a store then move up and continue the scan with the next
     // memory operand. If the next operand is a load save it and use alias