DAGCombiner: Check if store is volatile first

This is the simpler check. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@248625 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index 01ca2884d0382080ffa36a0253a5a038f02c6e84..f94f506156c2faa8f3077b63efeffea200e58127 100644 (file)
--- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -14519,6 +14519,9 @@ bool DAGCombiner::findBetterNeighborChains(StoreSDNode* St) {
     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::findBetterNeighborChains(StoreSDNode* St) {
     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