[llvm-bugs] [Bug 51453] New: Backport D107824 to 13.x

via llvm-bugs llvm-bugs at lists.llvm.org
Thu Aug 12 04:05:36 PDT 2021


            Bug ID: 51453
           Summary: Backport D107824 to 13.x
           Product: compiler-rt
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: release blocker
          Priority: P
         Component: tsan
          Assignee: unassignedbugs at nondot.org
          Reporter: dvyukov at google.com
                CC: llvm-bugs at lists.llvm.org

Tom, please backport the following commit to 13.x:

commit 1fa4c188b5a4187dba7e3809d8fd6d6eccff99f4
    sanitizer_common: optimize Mutex for high contention

It's a fix for a significant performance regression for ThreadSanitizer.

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