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00d406e77bb0e49d79dc1b13d7077436ee5cdf14
glibc/sysdeps/x86
History
litenglong 00d406e77b x86: Disable AVX Fast Unaligned Load on Hygon 1/2/3 
- Performance testing revealed significant memcpy performance degradation
  when bit_arch_AVX_Fast_Unaligned_Load is enabled on Hygon 3.
- Hygon confirmed AVX performance issues in certain memory functions.
- Glibc benchmarks show SSE outperforms AVX for
  memcpy/memmove/memset/strcmp/strcpy/strlen and so on.
- Hardware differences primarily in floating-point operations don't justify
  AVX usage for memory operations.

Reviewed-by: gaoxiang <gaoxiang@kylinos.cn>
Signed-off-by: litenglong <litenglong@kylinos.cn>
Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
2025-10-27 05:16:30 +08:00
..
bits
math: Fix unknown type name '__float128' for clang 3.4 to 3.8.1 (bug 32694)
2025-02-23 11:47:11 +08:00
fpu
x86: Use "%v" to emit VEX encoded instructions for AVX targets
2025-09-22 17:33:25 +02:00
htl
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2025-01-01 11:22:09 -08:00
include
x86: Use separate variable for TLSDESC XSAVE/XSAVEC state size (bug 32810)
2025-03-29 09:17:38 +01:00
nptl
Move <thread_pointer.h> to kernel-independent sysdeps directories
2025-01-09 19:30:16 +01:00
sys/platform
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2025-01-01 11:22:09 -08:00
__longjmp_cancel.S
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2025-01-01 11:22:09 -08:00
abi-note.c
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2025-01-01 11:22:09 -08:00
atomic-machine.h
x86: Define atomic_compare_and_exchange_{val, bool}_acq using __atomic_compare_exchange_n
2025-09-09 07:58:52 -07:00
cacheinfo.c
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2025-01-01 11:22:09 -08:00
cacheinfo.h
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2025-01-01 11:22:09 -08:00
configure
x86: Don't use asm statement for trunc/truncf
2025-09-17 04:30:11 -07:00
configure.ac
x86: Don't use asm statement for trunc/truncf
2025-09-17 04:30:11 -07:00
cpu-features-offsets.sym
x86-64: Update _dl_tlsdesc_dynamic to preserve AMX registers
2024-02-29 04:30:01 -08:00
cpu-features.c
x86: Disable AVX Fast Unaligned Load on Hygon 1/2/3
2025-10-27 05:16:30 +08:00
cpu-tunables.c
Fix typo in comment
2025-03-31 10:54:52 -03:00
dl-cacheinfo.h
x86: Include <bits/stdlib-bsearch.h> in dl-cacheinfo.h
2025-09-08 20:31:36 -07:00
dl-diagnostics-cpu.c
x86: Use separate variable for TLSDESC XSAVE/XSAVEC state size (bug 32810)
2025-03-29 09:17:38 +01:00
dl-get-cpu-features.c
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2025-01-01 11:22:09 -08:00
dl-hwcap2.h
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2025-01-01 11:22:09 -08:00
dl-hwcap.h
Remove dl-procinfo.h
2025-03-05 11:22:09 -03:00
dl-isa-level.h
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2025-01-01 11:22:09 -08:00
dl-lookupcfg.h
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2025-01-01 11:22:09 -08:00
dl-minsigstacksize.h
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2025-01-01 11:22:09 -08:00
dl-new-hash.h
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2025-01-01 11:22:09 -08:00
dl-procinfo.c
Remove unused dl-procinfo.h
2025-02-28 16:55:18 +00:00
dl-prop.h
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2025-01-01 11:22:09 -08:00
dl-tunables.list
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2025-01-01 11:22:09 -08:00
elf-initfini.h
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2025-01-01 11:22:09 -08:00
elide.h
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2025-01-01 11:22:09 -08:00
features-offsets.sym
x86: Update _dl_tlsdesc_dynamic to preserve caller-saved registers
2024-02-28 09:02:56 -08:00
float128-abi.h
Move __isnanf128 to libc.so
2021-03-30 14:58:19 +05:30
fpu_control.h
x86: Restore "*&" GCC asm memory operand workaround to installed fpu-control.h
2025-09-24 08:04:41 +02:00
get-cpuid-feature-leaf.c
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2025-01-01 11:22:09 -08:00
get-isa-level.h
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2025-01-01 11:22:09 -08:00
hp-timing.h
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2025-01-01 11:22:09 -08:00
init-arch.h
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2025-01-01 11:22:09 -08:00
isa-ifunc-macros.h
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2025-01-01 11:22:09 -08:00
isa-level.c
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2025-01-01 11:22:09 -08:00
isa-level.h
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2025-01-01 11:22:09 -08:00
jmp_buf-ssp.sym
x86: Support shadow stack pointer in setjmp/longjmp
2018-07-14 05:59:53 -07:00
ldbl2mpn.c
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2025-01-01 11:22:09 -08:00
ldsodefs.h
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2025-01-01 11:22:09 -08:00
libc-start.c
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2025-01-01 11:22:09 -08:00
link_map.h
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2025-01-01 11:22:09 -08:00
linkmap.h
…
longjmp.c
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2025-01-01 11:22:09 -08:00
Makeconfig
Add _Float64x function aliases.
2017-11-27 14:16:47 +00:00
Makefile
x86: Set have-protected-data to no if unsupported
2025-08-22 17:55:32 -07:00
readelflib.c
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2025-01-01 11:22:09 -08:00
sysdep.h
i386: Update ___tls_get_addr to preserve vector registers
2025-06-19 04:30:31 +08:00
tininess.h
…
tst-cpu-features-cpuinfo-static.c
x86: Add PTWRITE feature detection [BZ #27346]
2021-02-07 08:01:14 -08:00
tst-cpu-features-cpuinfo.c
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2025-01-01 11:22:09 -08:00
tst-cpu-features-supports-static.c
x86: Add PTWRITE feature detection [BZ #27346]
2021-02-07 08:01:14 -08:00
tst-cpu-features-supports.c
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2025-01-01 11:22:09 -08:00
tst-get-cpu-features-static.c
…
tst-get-cpu-features.c
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2025-01-01 11:22:09 -08:00
tst-gnu2-tls2-x86-noxsave.c
x86: Update tst-gnu2-tls2 tests
2025-06-19 05:46:31 +08:00
tst-gnu2-tls2-x86-noxsavec.c
x86: Update tst-gnu2-tls2 tests
2025-06-19 05:46:31 +08:00
tst-gnu2-tls2-x86-noxsavexsavec.c
x86: Update tst-gnu2-tls2 tests
2025-06-19 05:46:31 +08:00
tst-gnu2-tls2.c
x86: Update tst-gnu2-tls2 tests
2025-06-19 05:46:31 +08:00
tst-gnu2-tls2.h
x86: Update tst-gnu2-tls2 tests
2025-06-19 05:46:31 +08:00
tst-hwcap-tunables.c
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2025-01-01 11:22:09 -08:00
tst-ifunc-isa-1-static.c
x86: Check ifunc resolver with CPU_FEATURE_USABLE [BZ #27072]
2021-01-21 10:22:26 -08:00
tst-ifunc-isa-1.c
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2025-01-01 11:22:09 -08:00
tst-ifunc-isa-2-static.c
x86: Check ifunc resolver with CPU_FEATURE_USABLE [BZ #27072]
2021-01-21 10:22:26 -08:00
tst-ifunc-isa-2.c
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2025-01-01 11:22:09 -08:00
tst-ifunc-isa.h
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2025-01-01 11:22:09 -08:00
tst-isa-level-1.c
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2025-01-01 11:22:09 -08:00
tst-isa-level-mod-1-baseline.c
x86: Support GNU_PROPERTY_X86_ISA_1_V[234] marker [BZ #26717]
2021-01-07 13:10:13 -08:00
tst-isa-level-mod-1-v2.c
x86: Support GNU_PROPERTY_X86_ISA_1_V[234] marker [BZ #26717]
2021-01-07 13:10:13 -08:00
tst-isa-level-mod-1-v3.c
x86: Support GNU_PROPERTY_X86_ISA_1_V[234] marker [BZ #26717]
2021-01-07 13:10:13 -08:00
tst-isa-level-mod-1-v4.c
x86: Support GNU_PROPERTY_X86_ISA_1_V[234] marker [BZ #26717]
2021-01-07 13:10:13 -08:00
tst-isa-level-mod-1.c
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2025-01-01 11:22:09 -08:00
tst-ldbl-nonnormal-printf.c
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2025-01-01 11:22:09 -08:00
tst-memchr-rtm.c
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2025-01-01 11:22:09 -08:00
tst-memcmp-rtm.c
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2025-01-01 11:22:09 -08:00
tst-memmove-rtm.c
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2025-01-01 11:22:09 -08:00
tst-memrchr-rtm.c
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2025-01-01 11:22:09 -08:00
tst-memset-rtm.c
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2025-01-01 11:22:09 -08:00
tst-setjmp-cet.c
x86: Set header.feature_1 in TCB for always-on CET [BZ #27177]
2021-01-13 05:03:34 -08:00
tst-stack-align.h
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2025-01-01 11:22:09 -08:00
tst-strcasecmp-rtm.c
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2025-01-01 11:22:09 -08:00
tst-strchr-rtm.c
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2025-01-01 11:22:09 -08:00
tst-strcmp-rtm.c
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2025-01-01 11:22:09 -08:00
tst-strcpy-rtm.c
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2025-01-01 11:22:09 -08:00
tst-string-rtm.h
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2025-01-01 11:22:09 -08:00
tst-strlen-rtm.c
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2025-01-01 11:22:09 -08:00
tst-strncasecmp-rtm.c
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2025-01-01 11:22:09 -08:00
tst-strncmp-rtm.c
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2025-01-01 11:22:09 -08:00
tst-strrchr-rtm.c
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2025-01-01 11:22:09 -08:00
tst-sysconf-cache-linesize-static.c
x86: Handle _SC_LEVEL1_ICACHE_LINESIZE [BZ #27444]
2021-03-15 05:43:26 -07:00
tst-sysconf-cache-linesize.c
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2025-01-01 11:22:09 -08:00
tst-tls23.c
i386: Update ___tls_get_addr to preserve vector registers
2025-06-19 04:30:31 +08:00
tst-tls23.h
i386: Update ___tls_get_addr to preserve vector registers
2025-06-19 04:30:31 +08:00
tst-wcscmp-rtm.c
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2025-01-01 11:22:09 -08:00
tst-wcsncmp-rtm.c
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2025-01-01 11:22:09 -08:00
utmp-size.h
login: Check default sizes of structs utmp, utmpx, lastlog
2024-04-19 14:38:17 +02:00
Versions
i386: Also add GLIBC_ABI_GNU2_TLS version [BZ #33129]
2025-08-18 11:58:01 -07:00