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83d776f979
glibc/sysdeps/x86
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Andrew Senkevich 83d776f979 Added memset optimized with AVX512 for KNL hardware. 
It shows improvement up to 28% over AVX2 memset (performance results
attached at <https://sourceware.org/ml/libc-alpha/2015-12/msg00052.html>).

    * sysdeps/x86_64/multiarch/memset-avx512-no-vzeroupper.S: New file.
    * sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Added new file.
    * sysdeps/x86_64/multiarch/ifunc-impl-list.c: Added new tests.
    * sysdeps/x86_64/multiarch/memset.S: Added new IFUNC branch.
    * sysdeps/x86_64/multiarch/memset_chk.S: Likewise.
    * sysdeps/x86/cpu-features.h (bit_Prefer_No_VZEROUPPER,
    index_Prefer_No_VZEROUPPER): New.
    * sysdeps/x86/cpu-features.c (init_cpu_features): Set the
    Prefer_No_VZEROUPPER for Knights Landing.
2015-12-19 02:47:28 +03:00
..
bits Rename bits/linkmap.h to linkmap.h (bug 14912). 2015-09-04 19:44:27 +00:00
fpu Utilize x86_64 vector math functions w/o -fopenmp. 2015-12-07 21:58:26 +03:00
cpu-features-offsets.sym Add _dl_x86_cpu_features to rtld_global 2015-08-13 03:41:22 -07:00
cpu-features.c Added memset optimized with AVX512 for KNL hardware. 2015-12-19 02:47:28 +03:00
cpu-features.h Added memset optimized with AVX512 for KNL hardware. 2015-12-19 02:47:28 +03:00
dl-get-cpu-features.c Add _dl_x86_cpu_features to rtld_global 2015-08-13 03:41:22 -07:00
elide.h nptl: Document crash due to incorrect use of locks 2015-08-20 08:44:37 +02:00
fpu_control.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
init-arch.h Detect and select i586/i686 implementation at run-time 2015-08-27 09:06:44 -07:00
libc-start.c Add _dl_x86_cpu_features to rtld_global 2015-08-13 03:41:22 -07:00
linkmap.h Rename bits/linkmap.h to linkmap.h (bug 14912). 2015-09-04 19:44:27 +00:00
Makefile Run tst-prelink test for GLOB_DAT reloc 2015-11-14 12:00:38 -08:00
rtld-global-offsets.sym Add _dl_x86_cpu_features to rtld_global 2015-08-13 03:41:22 -07:00
tininess.h Use sysdeps/x86/tininess.h for i386 and x86_64 2012-10-30 20:38:31 -07:00
tst-get-cpu-features-static.c Add _dl_x86_cpu_features to rtld_global 2015-08-13 03:41:22 -07:00
tst-get-cpu-features.c Add _dl_x86_cpu_features to rtld_global 2015-08-13 03:41:22 -07:00
Versions Add _dl_x86_cpu_features to rtld_global 2015-08-13 03:41:22 -07:00