[DAG] BaseIndexOffset::computeAliasing - early out on failed matches.…

… NFCI. Don't wait to test that all base ptr matches have succeeded
llvm · Jan 4, 2024 · 43e0723 · 43e0723
1 parent 6bb8d69
commit 43e0723
Showing 1 changed file with 5 additions and 2 deletions.
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGAddressAnalysis.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGAddressAnalysis.cpp
@@ -91,10 +91,13 @@ bool BaseIndexOffset::computeAliasing(const SDNode *Op0,
                                       const SelectionDAG &DAG, bool &IsAlias) {
 
   BaseIndexOffset BasePtr0 = match(Op0, DAG);
-  BaseIndexOffset BasePtr1 = match(Op1, DAG);
+  if (!BasePtr0.getBase().getNode())
+    return false;
 
-  if (!(BasePtr0.getBase().getNode() && BasePtr1.getBase().getNode()))
+  BaseIndexOffset BasePtr1 = match(Op1, DAG);
+  if (!BasePtr1.getBase().getNode())
     return false;
+
   int64_t PtrDiff;
   if (NumBytes0 && NumBytes1 &&
       BasePtr0.equalBaseIndex(BasePtr1, DAG, PtrDiff)) {