[all-commits] [llvm/llvm-project] b84c10: [DAG] visitVSELECT - don't wait for truncation of ...

Simon Pilgrim via All-commits all-commits at lists.llvm.org
Wed Jun 8 08:18:03 PDT 2022


  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b84c10d4bc19532392ffd40ce9558a09c544a898
      https://github.com/llvm/llvm-project/commit/b84c10d4bc19532392ffd40ce9558a09c544a898
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2022-06-08 (Wed, 08 Jun 2022)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp

  Log Message:
  -----------
  [DAG] visitVSELECT - don't wait for truncation of sub before attempting to match with getTruncatedUSUBSAT

Fixes some X86 PSUBUS regressions encountered in D127115 where the truncate was being replaced with a PACKSS/PACKUS before the fold got called again




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