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| author | Tsvetkova Alexandra <aleksandra.tsvetkova@intel.com> | 2015-12-29 12:52:42 +0000 |
|---|---|---|
| committer | Ilya Enkovich <ienkovich@gcc.gnu.org> | 2015-12-29 12:52:42 +0000 |
| commit | 0bf0df50e5a18e7b707ba0091cb86e1bd388d4b3 (patch) | |
| tree | 15fb381620421c16562fcbe81b00c4e41e55af5c /libmpx/mpxwrap | |
| parent | 8c20a15574b1a551bc6b51b35129b56f69110ef9 (diff) | |
| download | gcc-0bf0df50e5a18e7b707ba0091cb86e1bd388d4b3.zip gcc-0bf0df50e5a18e7b707ba0091cb86e1bd388d4b3.tar.gz gcc-0bf0df50e5a18e7b707ba0091cb86e1bd388d4b3.tar.bz2 | |
mpx_wrappers.c (__mpx_wrapper_memmove): Special handling of one pointer copy.
libmpx/
2015-12-29 Tsvetkova Alexandra <aleksandra.tsvetkova@intel.com>
* libmpxwrap/mpx_wrappers.c (__mpx_wrapper_memmove): Special
handling of one pointer copy.
From-SVN: r231991
Diffstat (limited to 'libmpx/mpxwrap')
| -rw-r--r-- | libmpx/mpxwrap/mpx_wrappers.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/libmpx/mpxwrap/mpx_wrappers.c b/libmpx/mpxwrap/mpx_wrappers.c index ffa7e7e..4df4e9e 100644 --- a/libmpx/mpxwrap/mpx_wrappers.c +++ b/libmpx/mpxwrap/mpx_wrappers.c @@ -483,7 +483,18 @@ __mpx_wrapper_memmove (void *dst, const void *src, size_t n) __bnd_chk_ptr_bounds (dst, n); __bnd_chk_ptr_bounds (src, n); + /* When we copy exactly one pointer it is faster to + just use bndldx + bndstx. */ + if (n == sizeof (void *)) + { + const void **s = (const void**)src; + void **d = (void**)dst; + *d = *s; + return dst; + } + memmove (dst, src, n); + /* Not necessary to copy bounds if size is less then size of pointer or SRC==DST. */ if ((n >= sizeof (void *)) && (src != dst)) |