[all-commits] [llvm/llvm-project] d68eb9: [Local] Preserve !callees when merging calls (#225...

[Mian Miftah via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d68eb988705ce5e14ca6eba12c74ebdadf573ad7
      https://github.com/llvm/llvm-project/commit/d68eb988705ce5e14ca6eba12c74ebdadf573ad7
  Author: Mian Miftah <mmiftah.duna at gmail.com>
  Date:   2026-09-24 (Thu, 24 Sep 2026)

  Changed paths:
    M llvm/include/llvm/IR/Metadata.h
    M llvm/lib/IR/Metadata.cpp
    M llvm/lib/Transforms/Utils/Local.cpp
    A llvm/test/Transforms/GVN/callees-metadata.ll
    A llvm/test/Transforms/SimplifyCFG/merge-callees-metadata.ll

  Log Message:
  -----------
  [Local] Preserve !callees when merging calls (#225307)

When `SimplifyCFG` hoists or sinks two calls, `combineMetadata` drops `!callees`
even if both calls have it. Take the union of the lists when the retained
call moves, since it must allow the targets of either call. If either call
has no `!callees`, drop it from the merged call. For CSE, keep the list on
the call that stays in place.



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