[llvm] 43e0723 - [DAG] BaseIndexOffset::computeAliasing - early out on failed matches. NFCI.

[Simon Pilgrim via llvm-commits]

Author: Simon Pilgrim
Date: 2024-01-04T10:50:42Z
New Revision: 43e0723899e909cb2502b34da2003a5774ffb394

URL: https://github.com/llvm/llvm-project/commit/43e0723899e909cb2502b34da2003a5774ffb394
DIFF: https://github.com/llvm/llvm-project/commit/43e0723899e909cb2502b34da2003a5774ffb394.diff

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

Don't wait to test that all base ptr matches have succeeded

Added: 
    

Modified: 
    llvm/lib/CodeGen/SelectionDAG/SelectionDAGAddressAnalysis.cpp

Removed: 
    


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diff  --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGAddressAnalysis.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGAddressAnalysis.cpp
index 39a1e09e83c594..558706d3d3c562 100644
--- 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)) {