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| author | Vlad Serebrennikov <serebrennikov.vladislav@gmail.com> | 2024-07-18 11:49:53 +0400 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-07-18 11:49:53 +0400 |
| commit | 2ef7cbf71c98246d6f3a9c63dea75b76c7b5e928 (patch) | |
| tree | f846de6b5673558b95e51cf5b04498d9015549d1 /clang/docs/CommandGuide | |
| parent | 09cbb45edd149d30766c87be4628e4df13f3496d (diff) | |
| download | llvm-2ef7cbf71c98246d6f3a9c63dea75b76c7b5e928.zip llvm-2ef7cbf71c98246d6f3a9c63dea75b76c7b5e928.tar.gz llvm-2ef7cbf71c98246d6f3a9c63dea75b76c7b5e928.tar.bz2 | |
[clang] Add deprecation warning for `-Ofast` driver option (#98736)
This patch implements consensus on the corresponding RFC documented
here: https://discourse.llvm.org/t/rfc-deprecate-ofast/78687/72
Specifically, I added a deprecation warning for `-Ofast`, that suggests
to use `-O3` or `-O3` with `-ffast-math`, and a new diagnostic group for
aforementioned warning.
Deprecation period is going to be lengthy, so I hope this PR can be
merged in time for Clang 19.
Diffstat (limited to 'clang/docs/CommandGuide')
| -rw-r--r-- | clang/docs/CommandGuide/clang.rst | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/clang/docs/CommandGuide/clang.rst b/clang/docs/CommandGuide/clang.rst index 2915429..663aca1 100644 --- a/clang/docs/CommandGuide/clang.rst +++ b/clang/docs/CommandGuide/clang.rst @@ -429,7 +429,8 @@ Code Generation Options :option:`-Ofast` Enables all the optimizations from :option:`-O3` along with other aggressive optimizations that may violate strict compliance with - language standards. + language standards. This is deprecated in favor of :option:`-O3` + in combination with :option:`-ffast-math`. :option:`-Os` Like :option:`-O2` with extra optimizations to reduce code size. |