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| author | Clement Courbet <courbet@google.com> | 2019-05-15 08:21:18 +0000 |
|---|---|---|
| committer | Clement Courbet <courbet@google.com> | 2019-05-15 08:21:18 +0000 |
| commit | d9d0665d1c6b23412771fb2e6b2f00e383d7c892 (patch) | |
| tree | 21eb810ba1b90081d08c244487de92e47adbc797 | |
| parent | 041f40e5daf35842f67ab40eaa1f29e99727b736 (diff) | |
| download | bcm5719-llvm-d9d0665d1c6b23412771fb2e6b2f00e383d7c892.tar.gz bcm5719-llvm-d9d0665d1c6b23412771fb2e6b2f00e383d7c892.zip | |
[[DAGCombiner][NFC] Add a comment.
As suggested in D61846.
llvm-svn: 360755
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 8fe6f721584..27da26446ee 100644 --- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -19830,6 +19830,8 @@ bool DAGCombiner::isAlias(SDNode *Op0, SDNode *Op1) const { return false; } + // Try to prove that there is aliasing, or that there is no aliasing. Either + // way, we can return now. If nothing can be proved, proceed with more tests. bool IsAlias; if (BaseIndexOffset::computeAliasing(Op0, MUC0.NumBytes, Op1, MUC1.NumBytes, DAG, IsAlias)) |
