[PATCH] D71828: [InstCombine] Convert vector store to scalar store if only one element updated

[Sanjay Patel via Phabricator via llvm-commits]

spatel added a comment.

We have -vector-combine now, and it only runs late in the pipeline. If we put this transform in there, that should bypass concerns about interfering with GVN. That pass also has access to the cost model, so we could try to limit the transform if there are known cases where it would not be profitable (ie, no need to try to implement a codegen reversal).


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https://reviews.llvm.org/D71828