mirror/gcc
2
0
Fork 0
mirror of git://gcc.gnu.org/git/gcc.git synced 2025-04-05 10:50:51 +08:00
Code Issues Packages Projects Releases Wiki Activity

re PR c/57182 (Documentation implies -fprofile-arcs required to create .text.unlikely sections)

Browse Source 
2018-11-26  Sandra Loosemore  <sandra@codesourcery.com>

	PR c/57182

	gcc/
	* doc/invoke.texi (Optimize Options): Document that
	-freorder-functions also uses "hot" and "cold" attributes.

From-SVN: r266473
This commit is contained in:
Sandra Loosemore 2018-11-26 13:22:19 -05:00 committed by Sandra Loosemore
parent 17f8ace20e
commit 73d062d118
2 changed files with 9 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2018-11-26 Sandra Loosemore <sandra@codesourcery.com>
PR c/57182
* doc/invoke.texi (Optimize Options): Document that
-freorder-functions also uses "hot" and "cold" attributes.
2018-11-26 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
* config/aarch64/aarch64.c (aarch64_mangle_type): Fix typo in comment.

5
gcc/doc/invoke.texi
View File

@ -9796,8 +9796,9 @@ subsections @code{.text.hot} for most frequently executed functions and
the linker so object file format must support named sections and linker must
place them in a reasonable way.
Also profile feedback must be available to make this option effective. See
@option{-fprofile-arcs} for details.
This option isn't effective unless you either provide profile feedback
(see @option{-fprofile-arcs} for details) or manually annotate functions with
@code{hot} or @code{cold} attributes (@pxref{Common Function Attributes}).
Enabled at levels @option{-O2}, @option{-O3}, @option{-Os}.