[PATCH] D87772: [SLP] sort candidates to increase chance of optimal compare reduction

[Alexey Bataev via Phabricator via llvm-commits]

ABataev added inline comments.


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Comment at: llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp:6860
+      // Step 2: Sort the values so the most common predicates come first.
+      sort(ReducedVals, [&PredCountMap](Value *A, Value *B) {
+        CmpInst::Predicate PredA, PredB;
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`stable_sort`?


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D87772/new/

https://reviews.llvm.org/D87772