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f46ef33ad1
Optimize strlen using a mix of scalar and SIMD code. On modern micro architectures large strings are 2.6 times faster than existing strlen_asimd and 35% faster than the new MTE version of strlen. On a random strlen benchmark using small sizes the speedup is 7% vs strlen_asimd and 40% vs the MTE strlen. This fixes the main strlen regressions on Cortex-A53 and other cores with a simple Neon unit. Rename __strlen_generic to __strlen_mte, and select strlen_asimd when MTE is not enabled (this is waiting on support for a HWCAP_MTE bit). This fixes big-endian bug 25824. Passes GLIBC regression tests. Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com> |
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| .. | ||
| ifunc-impl-list.c | ||
| init-arch.h | ||
| Makefile | ||
| memchr_generic.S | ||
| memchr_nosimd.S | ||
| memchr.c | ||
| memcpy_advsimd.S | ||
| memcpy_falkor.S | ||
| memcpy_generic.S | ||
| memcpy_thunderx2.S | ||
| memcpy_thunderx.S | ||
| memcpy.c | ||
| memmove.c | ||
| memset_base64.S | ||
| memset_emag.S | ||
| memset_falkor.S | ||
| memset_generic.S | ||
| memset_kunpeng.S | ||
| memset.c | ||
| rtld-memset.S | ||
| strlen_asimd.S | ||
| strlen_mte.S | ||
| strlen.c | ||