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Diffstat (limited to 'gcc/doc/invoke.texi')
| -rw-r--r-- | gcc/doc/invoke.texi | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 22001f9..1cfaae7 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -9933,6 +9933,18 @@ the profile feedback data files. See @option{-fprofile-dir}. To optimize the program based on the collected profile information, use @option{-fprofile-use}. @xref{Optimize Options}, for more information. +@item -fprofile-update=@var{method} +@opindex fprofile-update + +Alter the update method for an application instrumented for profile +feedback based optimization. The @var{method} argument should be one of +@samp{single} or @samp{atomic}. The first one is useful for single-threaded +applications, while the second one prevents profile corruption by emitting +thread-safe code. + +@strong{Warning:} When an application does not properly join all threads +(or creates an detached thread), a profile file can be still corrupted. + @item -fsanitize=address @opindex fsanitize=address Enable AddressSanitizer, a fast memory error detector. |