[all-commits] [llvm/llvm-project] 928585: [clang][timers][stats] Add a flag to enable timers...

[Alan Zhao via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 92858528c2db534e4101b7ac6cd263ac7884764d
      https://github.com/llvm/llvm-project/commit/92858528c2db534e4101b7ac6cd263ac7884764d
  Author: Alan Zhao <ayzhao at google.com>
  Date:   2025-07-22 (Tue, 22 Jul 2025)

  Changed paths:
    M clang/include/clang/Basic/CodeGenOptions.def
    M clang/include/clang/Driver/Options.td
    M clang/lib/Frontend/CompilerInvocation.cpp
    M clang/test/Misc/time-passes.c
    M clang/tools/driver/cc1_main.cpp

  Log Message:
  -----------
  [clang][timers][stats] Add a flag to enable timers in the stats file (#149946)

As reported in #138173, enabling `-ftime-report` adds pass timing info
to the stats file if `-stats-file` is specified. This was determined to
be WAI. However, if one intentionally wants to put timer information in
the stats file, using `-ftime-report` may lead to a lot of logspam (that
can't be removed by directing stderr to `/dev/null` as that would also
redirect compiler errors). To address this, this PR adds a flag
`-stats-file-timers` that adds timer data to the stats file without
outputting to stderr.



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