[all-commits] [llvm/llvm-project] 4d8528: [SimplifyCFG] Fold switch over ucmp/scmp to icmp a...

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4d85285ff68d11fcb8c6b296799a11074e7ff7d7
      https://github.com/llvm/llvm-project/commit/4d85285ff68d11fcb8c6b296799a11074e7ff7d7
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2024-08-22 (Thu, 22 Aug 2024)

  Changed paths:
    M llvm/lib/Transforms/Utils/SimplifyCFG.cpp
    M llvm/test/Transforms/SimplifyCFG/switch-on-cmp.ll

  Log Message:
  -----------
  [SimplifyCFG] Fold switch over ucmp/scmp to icmp and br (#105636)

If we switch over ucmp/scmp and have two switch cases going to the same
destination, we can convert into icmp+br.

Fixes https://github.com/llvm/llvm-project/issues/105632.



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