Yao Zihong 09a94c86ca riscv: memcpy_noalignment: Reorder to store via a3, then bump a3 ...

Rewrite the copy micro-step from:

    REG_L  a4, 0(a5)
    addi   a3, a3, SZREG
    addi   a5, a5, SZREG
    REG_S  a4, -SZREG(a3)

to:

    REG_L  a4, 0(a5)
    addi   a5, a5, SZREG
    REG_S  a4, 0(a3)
    addi   a3, a3, SZREG

Semantics are unchanged: both read *(a5_old), write *(a3_old), and then
increment a3/a5 by SZREG. memcpy assumes non-overlapping regions, so the
reordering preserves correctness.

No functional change.

Signed-off-by: Yao Zihong <zihong.plct@isrc.iscas.ac.cn>
Reviewed-by: Peter Bergner <bergner@tenstorrent.com>

2025-10-30 17:49:21 -05:00

..

aarch64

aarch64: Fix tst-ifunc-arg-4 on clang-18

2025-10-29 12:54:10 -03:00

alpha

alpha: Fix missing inexact-flag raising for lround/lrint

2025-09-11 14:48:00 -03:00

arc

math: Add fetestexcept internal alias

2025-09-11 14:46:07 -03:00

arm

arm: Add ARM VFPv4 VFMA instruction support in fma/fmaf (BZ 15503)

2025-10-03 15:19:54 -03:00

csky

math: Add fetestexcept internal alias

2025-09-11 14:46:07 -03:00

generic

math: Add builtin support for (l)lround(f)

2025-10-17 17:03:54 +00:00

gnu

Updates struct tcp_zerocopy_receive from 5.11 to netinet/tcp.h.

2025-10-29 12:54:12 -03:00

hppa

math: Add fetestexcept internal alias

2025-09-11 14:46:07 -03:00

htl

Remove futex_supports_pshared

2025-09-08 15:01:18 +02:00

hurd

htl: move pthread_kill into libc.

2025-08-16 01:44:27 +02:00

i386

i386: Remove the SVID error handling from fmodf

2025-10-30 15:41:07 -03:00

ieee754

math: Remove the SVID error handling wrapper from yn/jn

2025-10-30 15:41:35 -03:00

loongarch

math: Add fetestexcept internal alias

2025-09-11 14:46:07 -03:00

m68k

math: Remove the SVID error handling from coshf

2025-10-30 15:41:28 -03:00

mach

math: Remove the SVID error handling wrapper from yn/jn

2025-10-30 15:41:35 -03:00

microblaze

atomic: Switch microblaze to builtin atomics

2025-09-09 13:53:54 +00:00

mips

mips: Fix delay slot filling in bsd-setjmp.S

2025-09-23 10:29:24 -03:00

nptl

Remove futex_supports_pshared

2025-09-08 15:01:18 +02:00

or1k

math: Add fetestexcept internal alias

2025-09-11 14:46:07 -03:00

posix

assert: Refactor assert/assert_perror

2025-09-23 10:29:24 -03:00

powerpc

ppc64le: Power 10 rawmemchr clobbers v20 (bug #33091)

2025-10-26 12:19:53 -05:00

pthread

Add once_flag, ONCE_FLAG_INIT and call_once to stdlib.h for C23

2025-10-01 15:15:15 +00:00

riscv

riscv: memcpy_noalignment: Reorder to store via a3, then bump a3

2025-10-30 17:49:21 -05:00

s390

math: Add fetestexcept internal alias

2025-09-11 14:46:07 -03:00

sh

math: Add fetestexcept internal alias

2025-09-11 14:46:07 -03:00

sparc

math: Add fetestexcept internal alias

2025-09-11 14:46:07 -03:00

unix

math: Remove the SVID error handling wrapper from yn/jn

2025-10-30 15:41:35 -03:00

wordsize-32

Replace count_leading_zeros with stdc_leading_zeros

2025-10-29 12:53:55 -03:00

wordsize-64

stdio-common: Reject integer prefixes in scanf [BZ #12701]

2025-03-28 12:35:53 +00:00

x86

Annotate swtich fall-through

2025-10-29 12:54:01 -03:00

x86_64

x86: fix wmemset ifunc stray '!' (bug 33542)

2025-10-29 12:54:14 -03:00