[all-commits] [llvm/llvm-project] bda8d1: [PatternMatch] Do not match constant expression trunc

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: bda8d1ad72fc72f21f6c536692594376d00db8b6
      https://github.com/llvm/llvm-project/commit/bda8d1ad72fc72f21f6c536692594376d00db8b6
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2024-06-03 (Mon, 03 Jun 2024)

  Changed paths:
    M llvm/include/llvm/IR/PatternMatch.h
    M llvm/test/Transforms/InstCombine/icmp-of-trunc-ext.ll

  Log Message:
  -----------
  [PatternMatch] Do not match constant expression trunc

Similar to the change previously made for binops, make m_Trunc()
only match instructions, not constant expressions. This is more
likely to cause a crash than do something useful.

Fixes crash reported at:
https://github.com/llvm/llvm-project/pull/92885#issuecomment-2145034670



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