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* Enable AVX2 optimized memset only if -mavx2 worksH.J. Lu2014-07-141-0/+2
| | | | | | | | | | | | | | | | | * config.h.in (HAVE_AVX2_SUPPORT): New #undef. * sysdeps/i386/configure.ac: Set HAVE_AVX2_SUPPORT and config-cflags-avx2. * sysdeps/x86_64/configure.ac: Likewise. * sysdeps/i386/configure: Regenerated. * sysdeps/x86_64/configure: Likewise. * sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Add memset-avx2 only if config-cflags-avx2 is yes. * sysdeps/x86_64/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Tests for memset_chk and memset only if HAVE_AVX2_SUPPORT is defined. * sysdeps/x86_64/multiarch/memset.S: Define multiple versions only if HAVE_AVX2_SUPPORT is defined. * sysdeps/x86_64/multiarch/memset_chk.S: Likewise.
* Add ifunc tests for x86_64 memset_chk and memsetH.J. Lu2014-06-201-0/+11
| | | | | | | | | | | | This patch adds ifunc tests for x86_64 memset_chk and memset. It also defines HAS_AVX2 with AVX2_Usable since AVX2 may not be usable even if processor has AVX2. * sysdeps/x86_64/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Add tests for memset_chk and memset. * sysdeps/x86_64/multiarch/init-arch.h (HAS_AVX2): Defined with AVX2_Usable.
* Update copyright notices with scripts/update-copyrightsAllan McRae2014-01-011-1/+1
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* Update file name in x86_64 ifunc listAllan McRae2013-12-161-1/+1
| | | | File name update missed in commit 584b18eb.
* Add strstr with unaligned loads. Fixes bug 12100.Ondřej Bílka2013-12-141-3/+1
| | | | | | | | | | A sse42 version of strstr used pcmpistr instruction which is quite ineffective. A faster way is look for pairs of characters which is uses sse2, is faster than pcmpistr and for real strings a pairs we look for are relatively rare. For linear time complexity we use buy or rent technique which switches to two-way algorithm when superlinear behaviour is detected.
* Faster strrchr.Ondřej Bílka2013-09-261-6/+0
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* Faster strchr implementation.Ondřej Bílka2013-09-111-1/+0
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* Add unaligned strcmp.Ondřej Bílka2013-09-031-0/+1
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* Fix rawmemchr regression on bulldozer.Ondřej Bílka2013-08-301-6/+0
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* Faster memcpy on x64.Ondrej Bilka2013-05-201-0/+1
| | | | | | | | | We add new memcpy version that uses unaligned loads which are fast on modern processors. This allows second improvement which is avoiding computed jump which is relatively expensive operation. Tests available here: http://kam.mff.cuni.cz/~ondra/memcpy_profile_result27_04_13.tar.bz2
* Faster strlen on x64.Ondrej Bilka2013-03-181-13/+0
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* Remove Prefer_SSE_for_memop on x64Ondrej Bilka2013-03-111-11/+0
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* Revert " * sysdeps/x86_64/strlen.S: Replace with new SSE2 based implementation"Ondrej Bilka2013-03-061-0/+13
| | | | This reverts commit b79188d71716b6286866e06add976fe84100595e.
* * sysdeps/x86_64/strlen.S: Replace with new SSE2 based implementationOndrej Bilka2013-03-061-13/+0
| | | | | which is faster on all x86_64 architectures. Tested on AMD, Intel Nehalem, SNB, IVB.
* Update copyright notices with scripts/update-copyrights.Joseph Myers2013-01-021-1/+1
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* Add x86-64 __libc_ifunc_impl_listH.J. Lu2012-10-111-0/+283
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