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| author | Nirav Dave <niravd@google.com> | 2019-03-29 18:50:22 +0000 |
|---|---|---|
| committer | Nirav Dave <niravd@google.com> | 2019-03-29 18:50:22 +0000 |
| commit | 7e84cacdbd599b78d313793d36c1ce484b8cbd14 (patch) | |
| tree | 3ff154b16acd51b811fd13ba771aaac8edeb1447 /llvm/lib/CodeGen | |
| parent | 9e911f3a6476e92f633436045528b1ac2e7d4161 (diff) | |
| download | bcm5719-llvm-7e84cacdbd599b78d313793d36c1ce484b8cbd14.tar.gz bcm5719-llvm-7e84cacdbd599b78d313793d36c1ce484b8cbd14.zip | |
[DAG] Avoid redundancy in StoreMerge TokenFactor generation.
Avoid generating redundant TokenFactor when all merged stores have
the same chain.
llvm-svn: 357299
Diffstat (limited to 'llvm/lib/CodeGen')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 2cd698eb7e0..13e1e96cc92 100644 --- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -14514,9 +14514,9 @@ SDValue DAGCombiner::getMergeStoreChains(SmallVectorImpl<MemOpLink> &StoreNodes, Visited.insert(StoreNodes[i].MemNode); } - // don't include nodes that are children + // don't include nodes that are children or repeated nodes. for (unsigned i = 0; i < NumStores; ++i) { - if (Visited.count(StoreNodes[i].MemNode->getChain().getNode()) == 0) + if (Visited.insert(StoreNodes[i].MemNode->getChain().getNode()).second) Chains.push_back(StoreNodes[i].MemNode->getChain()); } |
