[all-commits] [llvm/llvm-project] 142e38: [OpenMP][FIX] Do not use reachability reasoning in...

[Johannes Doerfert via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 142e38007d956c20c94d4c379f8c66152c99d437
      https://github.com/llvm/llvm-project/commit/142e38007d956c20c94d4c379f8c66152c99d437
  Author: Johannes Doerfert <johannes at jdoerfert.de>
  Date:   2022-12-09 (Fri, 09 Dec 2022)

  Changed paths:
    M llvm/lib/Transforms/IPO/AttributorAttributes.cpp
    M llvm/test/Transforms/Attributor/value-simplify-pointer-info.ll

  Log Message:
  -----------
  [OpenMP][FIX] Do not use reachability reasoning in parallel contexts

Similar to dominance reasoning, we cannot use CFG reachability if the
instructions might be executed by different threads. A follow up will
improve our sensitivity for situations when it is OK to use graph
reasoning.