[all-commits] [llvm/llvm-project] 3eed84: [profile] Fix bounds checks in profile merging (#1...

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 3eed8479a895253307c6d87a38bb5acf314c6505
      https://github.com/llvm/llvm-project/commit/3eed8479a895253307c6d87a38bb5acf314c6505
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2024-12-06 (Fri, 06 Dec 2024)

  Changed paths:
    M compiler-rt/lib/profile/InstrProfilingMerge.c

  Log Message:
  -----------
  [profile] Fix bounds checks in profile merging (#118782)

These bounds checks work on the result of the pointer addition -- but
the pointer addition already asserts that no overflow may occur, so the
checks are optimized away after #118472. Avoid this by performing the
addition in a way that permits overflow.



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