Match more post-indexed ops.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31569 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index bdb2d5e..430cf5c 100644
--- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -301,8 +301,12 @@
SDOperand BasePtr;
SDOperand Offset;
ISD::MemOpAddrMode AM = ISD::UNINDEXED;
- if (TLI.getPostIndexedAddressParts(Op, VT, BasePtr, Offset, AM,DAG) &&
- BasePtr == Ptr) {
+ if (TLI.getPostIndexedAddressParts(Op, VT, BasePtr, Offset, AM,DAG)) {
+ if (Ptr == Offset)
+ std::swap(BasePtr, Offset);
+ if (Ptr != BasePtr)
+ continue;
+
// Try turning it into a post-indexed load / store except when
// 1) Op must be independent of N, i.e. Op is neither a predecessor
// nor a successor of N. Otherwise, if Op is folded that would