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| author | Martin Liska <mliska@suse.cz> | 2019-05-02 09:57:38 +0200 |
|---|---|---|
| committer | Martin Liska <marxin@gcc.gnu.org> | 2019-05-02 07:57:38 +0000 |
| commit | 786e0e5239529de9a4254fe8411a0e8f843e721a (patch) | |
| tree | 8b319e19012eea14cba954edfd1ac8b95a7a6ff3 /gcc/doc | |
| parent | 06ceaa1d78d586eba492699075a8dee31ab3a3e8 (diff) | |
| download | gcc-786e0e5239529de9a4254fe8411a0e8f843e721a.zip gcc-786e0e5239529de9a4254fe8411a0e8f843e721a.tar.gz gcc-786e0e5239529de9a4254fe8411a0e8f843e721a.tar.bz2 | |
Prefer to use strlen call instead of inline expansion (PR target/88809).
2019-05-02 Martin Liska <mliska@suse.cz>
PR target/88809
* config/i386/i386.c (ix86_expand_strlen): Use strlen call.
With -minline-all-stringops use inline expansion using 4B loop.
* doc/invoke.texi: Document the change of
-minline-all-stringops.
2019-05-02 Martin Liska <mliska@suse.cz>
PR target/88809
* gcc.target/i386/pr88809.c: New test.
* gcc.target/i386/pr88809-2.c: New test.
From-SVN: r270787
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/invoke.texi | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 516eb24..de7e1aa 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -28506,8 +28506,9 @@ By default GCC inlines string operations only when the destination is known to be aligned to least a 4-byte boundary. This enables more inlining and increases code size, but may improve performance of code that depends on fast -@code{memcpy}, @code{strlen}, -and @code{memset} for short lengths. +@code{memcpy} and @code{memset} for short lengths. +The option enables inline expansion of @code{strlen} for all +pointer alignments. @item -minline-stringops-dynamically @opindex minline-stringops-dynamically |