glibc/sysdeps/x86_64/multiarch/memchr-avx2-rtm.S

#ifndef MEMCHR
# define MEMCHR __memchr_avx2_rtm
#endif

#define COND_VZEROUPPER	COND_VZEROUPPER_XTEST
#define ZERO_UPPER_VEC_REGISTERS_RETURN \
  ZERO_UPPER_VEC_REGISTERS_RETURN_XTEST

#define VZEROUPPER_RETURN jmp	 L(return_vzeroupper)

#define SECTION(p) p##.avx.rtm

#include "memchr-avx2.S"
x86-64: Add AVX optimized string/memory functions for RTM Since VZEROUPPER triggers RTM abort while VZEROALL won't, select AVX optimized string/memory functions with xtest jz 1f vzeroall ret 1: vzeroupper ret at function exit on processors with usable RTM, but without 256-bit EVEX instructions to avoid VZEROUPPER inside a transactionally executing RTM region. 2021-03-05 15:26:42 +00:00			`#ifndef MEMCHR`
			`# define MEMCHR __memchr_avx2_rtm`
			`#endif`

x86: Shrink code size of memchr-avx2.S This is not meant as a performance optimization. The previous code was far to liberal in aligning targets and wasted code size unnecissarily. The total code size saving is: 59 bytes There are no major changes in the benchmarks. Geometric Mean of all benchmarks New / Old: 0.967 Full xcheck passes on x86_64. Reviewed-by: H.J. Lu <hjl.tools@gmail.com> 2022-06-07 04:11:33 +00:00			`#define COND_VZEROUPPER COND_VZEROUPPER_XTEST`
x86-64: Add AVX optimized string/memory functions for RTM Since VZEROUPPER triggers RTM abort while VZEROALL won't, select AVX optimized string/memory functions with xtest jz 1f vzeroall ret 1: vzeroupper ret at function exit on processors with usable RTM, but without 256-bit EVEX instructions to avoid VZEROUPPER inside a transactionally executing RTM region. 2021-03-05 15:26:42 +00:00			`#define ZERO_UPPER_VEC_REGISTERS_RETURN \`
			`ZERO_UPPER_VEC_REGISTERS_RETURN_XTEST`

			`#define VZEROUPPER_RETURN jmp L(return_vzeroupper)`

			`#define SECTION(p) p##.avx.rtm`

			`#include "memchr-avx2.S"`