[PATCH] D128769: [DAGCombiner] Fold sra (sub AddC, (shl X, N1C)), N1C --> sext (sub AddC1',(trunc X to (width - N1C)))

[Craig Topper via Phabricator via llvm-commits]

craig.topper added a comment.

There's still a more general form of this that can show up near address arithmetic that we don't catch https://godbolt.org/z/WKfYvbvxe


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https://reviews.llvm.org/D128769