[PATCH] D131503: [DAGCombine] Combine signext_inreg of extract-extend

[Peter Waller via Phabricator via llvm-commits]

peterwaller-arm marked 2 inline comments as done.
peterwaller-arm added a comment.

I will submit first thing next week unless there are further comments.



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Comment at: llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp:6377
+    if (N1C->getAPIntValue().isMask(ScalarWidth) &&
+        (!LegalOperations || TLI.isOperationLegal(ISD::ZERO_EXTEND, ExtVT))) {
       //    (and (extract_subvector (zext|anyext|sext v) _) iN_mask)
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RKSimon wrote:
> Please commit this separately referencing the phab patch where it was added (D130782?)
Done, and a backport requested in https://github.com/llvm/llvm-project/issues/57089 since this case went into LLVM-15-rc3.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D131503/new/

https://reviews.llvm.org/D131503