[PATCH] D119623: [SLP] Simplify indices processing for insertelements

[Alexey Bataev via Phabricator via llvm-commits]

ABataev added a comment.

Would be good to test it using test suite at least, just in case we missed something.



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Comment at: llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp:4026
         SourceVectors.insert(cast<Instruction>(V)->getOperand(0));
-        Optional<int> Idx = *getInsertIndex(V);
-        if (!Idx || *Idx == UndefMaskElem)
-          continue;
-        MinIdx = std::min(MinIdx, *Idx);
+        if (getInsertIndex(V) == None) {
+          LLVM_DEBUG(dbgs() << "SLP: Gather of insertelement vectors with "
----------------
With an early check for insertelements in tryVectorizePair this can be turned to an assert rather than check and schedule cancellation.


Repository:
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  https://reviews.llvm.org/D119623/new/

https://reviews.llvm.org/D119623