This is the mail archive of the libc-alpha@sourceware.org mailing list for the glibc project.
Index Nav: | [Date Index] [Subject Index] [Author Index] [Thread Index] | |
---|---|---|
Message Nav: | [Date Prev] [Date Next] | [Thread Prev] [Thread Next] |
Other format: | [Raw text] |
Hello, This patch consists of new functions: x86_64: memcmp_ssse3 wmemcmp_ssse3 wmemcmp_sse4 x86_32: wmemcmp_ssse3 wmemcmp_sse4 This patch --- improves memcmp for atom in 64 bit mode by up to 4X. --- improves wmemcmp for atom in 64 bit mode by up to 3.5X and for core i5, core i7 by up to 3.8X. --- improves wmemcmp for atom in 32 bit mode by up to 3.3X and for core i5, core i7 by up to 4X. The patch was tested on atom, core 2, core i7. This patch additionally fixes bugs in wcsmbs/wmemcmp.c and sysdeps/string/test-memcmp.c (simple_wmemcmp). -- Liubov Dmitrieva Software Engineer Intel Corporation Change Log: 2011-09-27 Liubov Dmitrieva <liubov.dmitrieva@gmail.com> * sysdeps/x86_64/multiarch/Makefile: (sysdep_routines): Add memcmp-ssse3 wmemcmp-sse4 wmemcmp-ssse3 wmemcmp-c * sysdeps/x86_64/multiarch/memcmp-ssse3: New file. * sysdeps/x86_64/multiarch/memcmp.S: Update. Add __memcmp_ssse3. * sysdeps/x86_64/multiarch/memcmp-sse4.S: Update. (USE_AS_WMEMCMP): New macro. Fixing indents. * sysdeps/x86_64/multiarch/wmemcmp.S: New file. * sysdeps/x86_64/multiarch/wmemcmp-ssse3.S: New file. * sysdeps/x86_64/multiarch/wmemcmp-sse4.S: New file. * sysdeps/x86_64/multiarch/wmemcmp-c.S: New file. * sysdeps/i386/i686/multiarch/Makefile (sysdep_routines): Add wmemcmp-ssse3 wmemcmp-sse4 wmemcmp-c * sysdeps/i386/i686/multiarch/wmemcmp.S: New file. * sysdeps/i386/i686/multiarch/wmemcmp-c.c: New file. * sysdeps/i386/i686/multiarch/wmemcmp-ssse3.S: New file. * sysdeps/i386/i686/multiarch/wmemcmp-sse4.S: New file. * sysdeps/i386/i686/multiarch/memcmp-sse4.S: Update. (USE_AS_WMEMCMP): New macro. * sysdeps/i386/i686/multiarch/memcmp-ssse3: Likewise. * sysdeps/string/test-memcmp.c: Update. Fix simple_wmemcmp. Add new tests. * wcsmbs/wmemcmp.c: Update. (WMEMCMP): New macro. Fix overflow bug.
Attachment:
memcmp_wmemcmp.patch
Description: Binary data
Attachment:
ChangeLog.memcmp_wmemcmp
Description: Binary data
Index Nav: | [Date Index] [Subject Index] [Author Index] [Thread Index] | |
---|---|---|
Message Nav: | [Date Prev] [Date Next] | [Thread Prev] [Thread Next] |