[PATCH] D127392: [InstCombine] Combine consecutive loads which are being merged to form a wider load.

[Biplob Mishra via Phabricator via llvm-commits]

bipmis added a comment.

@spatel Thanks for reviewing it. The common scenarios in llvm where we see this as an issue is with the cost involved in the inliner, unrolller and vectorizer which results in a sub-optimal code. One such simple example can be with dot product where vectorizer fails to generate a vectorized code as below:
https://godbolt.org/z/Ee4cbf1PG

Similar situation can be seen with the unroller as well as in the example below:
https://godbolt.org/z/dWo8n3Yz8


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https://reviews.llvm.org/D127392