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-rw-r--r--Loongarch-Add-ifunc-support-for-memcpy-aligned-unali.patch2570
1 files changed, 2570 insertions, 0 deletions
diff --git a/Loongarch-Add-ifunc-support-for-memcpy-aligned-unali.patch b/Loongarch-Add-ifunc-support-for-memcpy-aligned-unali.patch
new file mode 100644
index 0000000..2bbf367
--- /dev/null
+++ b/Loongarch-Add-ifunc-support-for-memcpy-aligned-unali.patch
@@ -0,0 +1,2570 @@
+From 9c522272146423c1ef9fb9e071737a8ad26e844e Mon Sep 17 00:00:00 2001
+From: dengjianbo <dengjianbo@loongson.cn>
+Date: Tue, 15 Aug 2023 09:11:53 +0800
+Subject: [PATCH 07/29] Loongarch: Add ifunc support for memcpy{aligned,
+ unaligned, lsx, lasx} and memmove{aligned, unaligned, lsx, lasx}
+
+These implementations improve the time to copy data in the glibc
+microbenchmark as below:
+memcpy-lasx reduces the runtime about 8%-76%
+memcpy-lsx reduces the runtime about 8%-72%
+memcpy-unaligned reduces the runtime of unaligned data copying up to 40%
+memcpy-aligned reduece the runtime of unaligned data copying up to 25%
+memmove-lasx reduces the runtime about 20%-73%
+memmove-lsx reduces the runtime about 50%
+memmove-unaligned reduces the runtime of unaligned data moving up to 40%
+memmove-aligned reduces the runtime of unaligned data moving up to 25%
+
+Signed-off-by: Peng Fan <fanpeng@loongson.cn>
+Signed-off-by: ticat_fp <fanpeng@loongson.cn>
+---
+ sysdeps/loongarch/lp64/multiarch/Makefile | 5 +
+ .../lp64/multiarch/ifunc-impl-list.c | 19 +
+ sysdeps/loongarch/lp64/multiarch/ifunc-lasx.h | 45 +
+ .../loongarch/lp64/multiarch/memcpy-aligned.S | 783 ++++++++++++++++++
+ .../loongarch/lp64/multiarch/memcpy-lasx.S | 20 +
+ sysdeps/loongarch/lp64/multiarch/memcpy-lsx.S | 20 +
+ .../lp64/multiarch/memcpy-unaligned.S | 247 ++++++
+ sysdeps/loongarch/lp64/multiarch/memcpy.c | 37 +
+ .../lp64/multiarch/memmove-aligned.S | 20 +
+ .../loongarch/lp64/multiarch/memmove-lasx.S | 287 +++++++
+ .../loongarch/lp64/multiarch/memmove-lsx.S | 534 ++++++++++++
+ .../lp64/multiarch/memmove-unaligned.S | 380 +++++++++
+ sysdeps/loongarch/lp64/multiarch/memmove.c | 38 +
+ 13 files changed, 2435 insertions(+)
+ create mode 100644 sysdeps/loongarch/lp64/multiarch/ifunc-lasx.h
+ create mode 100644 sysdeps/loongarch/lp64/multiarch/memcpy-aligned.S
+ create mode 100644 sysdeps/loongarch/lp64/multiarch/memcpy-lasx.S
+ create mode 100644 sysdeps/loongarch/lp64/multiarch/memcpy-lsx.S
+ create mode 100644 sysdeps/loongarch/lp64/multiarch/memcpy-unaligned.S
+ create mode 100644 sysdeps/loongarch/lp64/multiarch/memcpy.c
+ create mode 100644 sysdeps/loongarch/lp64/multiarch/memmove-aligned.S
+ create mode 100644 sysdeps/loongarch/lp64/multiarch/memmove-lasx.S
+ create mode 100644 sysdeps/loongarch/lp64/multiarch/memmove-lsx.S
+ create mode 100644 sysdeps/loongarch/lp64/multiarch/memmove-unaligned.S
+ create mode 100644 sysdeps/loongarch/lp64/multiarch/memmove.c
+
+diff --git a/sysdeps/loongarch/lp64/multiarch/Makefile b/sysdeps/loongarch/lp64/multiarch/Makefile
+index 110a8c5c..afa51041 100644
+--- a/sysdeps/loongarch/lp64/multiarch/Makefile
++++ b/sysdeps/loongarch/lp64/multiarch/Makefile
+@@ -9,5 +9,10 @@ sysdep_routines += \
+ strchrnul-aligned \
+ strchrnul-lsx \
+ strchrnul-lasx \
++ memcpy-aligned \
++ memcpy-unaligned \
++ memmove-unaligned \
++ memmove-lsx \
++ memmove-lasx \
+ # sysdep_routines
+ endif
+diff --git a/sysdeps/loongarch/lp64/multiarch/ifunc-impl-list.c b/sysdeps/loongarch/lp64/multiarch/ifunc-impl-list.c
+index c7164b45..25eb96b0 100644
+--- a/sysdeps/loongarch/lp64/multiarch/ifunc-impl-list.c
++++ b/sysdeps/loongarch/lp64/multiarch/ifunc-impl-list.c
+@@ -53,5 +53,24 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
+ #endif
+ IFUNC_IMPL_ADD (array, i, strchrnul, 1, __strchrnul_aligned)
+ )
++
++ IFUNC_IMPL (i, name, memcpy,
++#if !defined __loongarch_soft_float
++ IFUNC_IMPL_ADD (array, i, memcpy, SUPPORT_LASX, __memcpy_lasx)
++ IFUNC_IMPL_ADD (array, i, memcpy, SUPPORT_LSX, __memcpy_lsx)
++#endif
++ IFUNC_IMPL_ADD (array, i, memcpy, SUPPORT_UAL, __memcpy_unaligned)
++ IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_aligned)
++ )
++
++ IFUNC_IMPL (i, name, memmove,
++#if !defined __loongarch_soft_float
++ IFUNC_IMPL_ADD (array, i, memmove, SUPPORT_LASX, __memmove_lasx)
++ IFUNC_IMPL_ADD (array, i, memmove, SUPPORT_LSX, __memmove_lsx)
++#endif
++ IFUNC_IMPL_ADD (array, i, memmove, SUPPORT_UAL, __memmove_unaligned)
++ IFUNC_IMPL_ADD (array, i, memmove, 1, __memmove_aligned)
++ )
++
+ return i;
+ }
+diff --git a/sysdeps/loongarch/lp64/multiarch/ifunc-lasx.h b/sysdeps/loongarch/lp64/multiarch/ifunc-lasx.h
+new file mode 100644
+index 00000000..3be67da6
+--- /dev/null
++++ b/sysdeps/loongarch/lp64/multiarch/ifunc-lasx.h
+@@ -0,0 +1,45 @@
++/* Common definition for ifunc selection implementation.
++ All versions must be listed in ifunc-impl-list.c.
++ Copyright (C) 2023 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <https://www.gnu.org/licenses/>. */
++
++#include <ldsodefs.h>
++#include <ifunc-init.h>
++
++#if !defined __loongarch_soft_float
++extern __typeof (REDIRECT_NAME) OPTIMIZE (lasx) attribute_hidden;
++extern __typeof (REDIRECT_NAME) OPTIMIZE (lsx) attribute_hidden;
++#endif
++
++extern __typeof (REDIRECT_NAME) OPTIMIZE (aligned) attribute_hidden;
++extern __typeof (REDIRECT_NAME) OPTIMIZE (unaligned) attribute_hidden;
++
++static inline void *
++IFUNC_SELECTOR (void)
++{
++#if !defined __loongarch_soft_float
++ if (SUPPORT_LASX)
++ return OPTIMIZE (lasx);
++ else if (SUPPORT_LSX)
++ return OPTIMIZE (lsx);
++ else
++#endif
++ if (SUPPORT_UAL)
++ return OPTIMIZE (unaligned);
++ else
++ return OPTIMIZE (aligned);
++}
+diff --git a/sysdeps/loongarch/lp64/multiarch/memcpy-aligned.S b/sysdeps/loongarch/lp64/multiarch/memcpy-aligned.S
+new file mode 100644
+index 00000000..299dd49c
+--- /dev/null
++++ b/sysdeps/loongarch/lp64/multiarch/memcpy-aligned.S
+@@ -0,0 +1,783 @@
++/* Optimized memcpy_aligned implementation using basic Loongarch instructions.
++ Copyright (C) 2023 Free Software Foundation, Inc.
++
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library. If not, see
++ <https://www.gnu.org/licenses/>. */
++
++#include <sysdep.h>
++#include <sys/regdef.h>
++#include <sys/asm.h>
++
++#if IS_IN (libc)
++# define MEMCPY_NAME __memcpy_aligned
++# define MEMMOVE_NAME __memmove_aligned
++#else
++# define MEMCPY_NAME memcpy
++# define MEMMOVE_NAME memmove
++#endif
++
++#define LD_64(reg, n) \
++ ld.d t0, reg, n; \
++ ld.d t1, reg, n + 8; \
++ ld.d t2, reg, n + 16; \
++ ld.d t3, reg, n + 24; \
++ ld.d t4, reg, n + 32; \
++ ld.d t5, reg, n + 40; \
++ ld.d t6, reg, n + 48; \
++ ld.d t7, reg, n + 56;
++
++#define ST_64(reg, n) \
++ st.d t0, reg, n; \
++ st.d t1, reg, n + 8; \
++ st.d t2, reg, n + 16; \
++ st.d t3, reg, n + 24; \
++ st.d t4, reg, n + 32; \
++ st.d t5, reg, n + 40; \
++ st.d t6, reg, n + 48; \
++ st.d t7, reg, n + 56;
++
++LEAF(MEMMOVE_NAME, 6)
++ sub.d t0, a0, a1
++ bltu t0, a2, L(copy_back)
++END(MEMMOVE_NAME)
++
++LEAF_NO_ALIGN(MEMCPY_NAME)
++ srai.d a3, a2, 4
++ beqz a3, L(short_data)
++
++ move a4, a0
++ andi a5, a0, 0x7
++ andi a6, a1, 0x7
++ li.d t8, 8
++ beqz a5, L(check_align)
++
++ sub.d t2, t8, a5
++ sub.d a2, a2, t2
++ pcaddi t1, 20
++ slli.d t3, t2, 3
++
++ add.d a1, a1, t2
++ sub.d t1, t1, t3
++ add.d a4, a4, t2
++ jr t1
++
++L(al7):
++ ld.b t0, a1, -7
++ st.b t0, a4, -7
++L(al6):
++ ld.b t0, a1, -6
++ st.b t0, a4, -6
++L(al5):
++ ld.b t0, a1, -5
++ st.b t0, a4, -5
++L(al4):
++ ld.b t0, a1, -4
++ st.b t0, a4, -4
++L(al3):
++ ld.b t0, a1, -3
++ st.b t0, a4, -3
++L(al2):
++ ld.b t0, a1, -2
++ st.b t0, a4, -2
++L(al1):
++ ld.b t0, a1, -1
++ st.b t0, a4, -1
++
++L(check_align):
++ bne a5, a6, L(unalign)
++ srai.d a3, a2, 4
++ beqz a3, L(al_less_16bytes)
++ andi a3, a2, 0x3f
++
++ beq a3, a2, L(al_less_64bytes)
++ sub.d t0, a2, a3
++ move a2, a3
++ add.d a5, a1, t0
++
++L(loop_64bytes):
++ LD_64(a1, 0)
++ addi.d a1, a1, 64
++ ST_64(a4, 0)
++
++ addi.d a4, a4, 64
++ bne a1, a5, L(loop_64bytes)
++
++L(al_less_64bytes):
++ srai.d a3, a2, 5
++ beqz a3, L(al_less_32bytes)
++
++ ld.d t0, a1, 0
++ ld.d t1, a1, 8
++ ld.d t2, a1, 16
++ ld.d t3, a1, 24
++
++ addi.d a1, a1, 32
++ addi.d a2, a2, -32
++
++ st.d t0, a4, 0
++ st.d t1, a4, 8
++ st.d t2, a4, 16
++ st.d t3, a4, 24
++
++ addi.d a4, a4, 32
++
++L(al_less_32bytes):
++ srai.d a3, a2, 4
++ beqz a3, L(al_less_16bytes)
++
++ ld.d t0, a1, 0
++ ld.d t1, a1, 8
++ addi.d a1, a1, 16
++ addi.d a2, a2, -16
++
++ st.d t0, a4, 0
++ st.d t1, a4, 8
++ addi.d a4, a4, 16
++
++L(al_less_16bytes):
++ srai.d a3, a2, 3
++ beqz a3, L(al_less_8bytes)
++
++ ld.d t0, a1, 0
++ addi.d a1, a1, 8
++ addi.d a2, a2, -8
++ st.d t0, a4, 0
++ addi.d a4, a4, 8
++
++L(al_less_8bytes):
++ srai.d a3, a2, 2
++ beqz a3, L(al_less_4bytes)
++
++ ld.w t0, a1, 0
++ addi.d a1, a1, 4
++ addi.d a2, a2, -4
++ st.w t0, a4, 0
++ addi.d a4, a4, 4
++
++L(al_less_4bytes):
++ srai.d a3, a2, 1
++ beqz a3, L(al_less_2bytes)
++
++ ld.h t0, a1, 0
++ addi.d a1, a1, 2
++ addi.d a2, a2, -2
++ st.h t0, a4, 0
++ addi.d a4, a4, 2
++
++L(al_less_2bytes):
++ beqz a2, L(al_less_1byte)
++
++ ld.b t0, a1, 0
++ st.b t0, a4, 0
++
++L(al_less_1byte):
++ jr ra
++
++L(unalign):
++ andi a5, a1, 0x7
++ bstrins.d a1, zero, 2, 0
++ sub.d t8, t8, a5
++ slli.d a5, a5, 3
++
++ ld.d t0, a1, 0
++ addi.d a1, a1, 8
++ slli.d a6, t8, 3
++ srl.d a7, t0, a5
++
++ srai.d a3, a2, 4
++ beqz a3, L(un_less_16bytes)
++ andi a3, a2, 0x3f
++ beq a3, a2, L(un_less_64bytes)
++
++ sub.d t0, a2, a3
++ move a2, a3
++ add.d a3, a1, t0
++
++L(un_long_bytes):
++ ld.d t0, a1, 0
++ ld.d t1, a1, 8
++ ld.d t2, a1, 16
++ ld.d t3, a1, 24
++
++ srl.d t4, t0, a5
++ sll.d t0, t0, a6
++ srl.d t5, t1, a5
++ sll.d t1, t1, a6
++
++ srl.d t6, t2, a5
++ sll.d t2, t2, a6
++ srl.d t7, t3, a5
++ sll.d t3, t3, a6
++
++ or t0, a7, t0
++ or t1, t4, t1
++ or t2, t5, t2
++ or t3, t6, t3
++
++ ld.d t4, a1, 32
++ ld.d t5, a1, 40
++ ld.d t6, a1, 48
++ ld.d a7, a1, 56
++
++ st.d t0, a4, 0
++ st.d t1, a4, 8
++ st.d t2, a4, 16
++ st.d t3, a4, 24
++
++ addi.d a1, a1, 64
++
++ srl.d t0, t4, a5
++ sll.d t4, t4, a6
++ srl.d t1, t5, a5
++ sll.d t5, t5, a6
++
++ srl.d t2, t6, a5
++ sll.d t6, t6, a6
++ sll.d t3, a7, a6
++ srl.d a7, a7, a5
++
++ or t4, t7, t4
++ or t5, t0, t5
++ or t6, t1, t6
++ or t3, t2, t3
++
++ st.d t4, a4, 32
++ st.d t5, a4, 40
++ st.d t6, a4, 48
++ st.d t3, a4, 56
++
++ addi.d a4, a4, 64
++ bne a3, a1, L(un_long_bytes)
++
++L(un_less_64bytes):
++ srai.d a3, a2, 5
++ beqz a3, L(un_less_32bytes)
++
++ ld.d t0, a1, 0
++ ld.d t1, a1, 8
++ ld.d t2, a1, 16
++ ld.d t3, a1, 24
++
++ addi.d a1, a1, 32
++ addi.d a2, a2, -32
++
++ srl.d t4, t0, a5
++ sll.d t0, t0, a6
++ srl.d t5, t1, a5
++ sll.d t1, t1, a6
++
++ srl.d t6, t2, a5
++ sll.d t2, t2, a6
++ or t0, a7, t0
++ srl.d a7, t3, a5
++ sll.d t3, t3, a6
++
++ or t1, t4, t1
++ or t2, t5, t2
++ or t3, t6, t3
++
++ st.d t0, a4, 0
++ st.d t1, a4, 8
++ st.d t2, a4, 16
++ st.d t3, a4, 24
++
++ addi.d a4, a4, 32
++
++L(un_less_32bytes):
++ srai.d a3, a2, 4
++ beqz a3, L(un_less_16bytes)
++
++ ld.d t0, a1, 0
++ ld.d t1, a1, 8
++ addi.d a1, a1, 16
++ addi.d a2, a2, -16
++
++ srl.d t2, t0, a5
++ sll.d t3, t0, a6
++ sll.d t4, t1, a6
++ or t3, a7, t3
++ or t4, t2, t4
++
++ srl.d a7, t1, a5
++ st.d t3, a4, 0
++ st.d t4, a4, 8
++ addi.d a4, a4, 16
++
++L(un_less_16bytes):
++ srai.d a3, a2, 3
++ beqz a3, L(un_less_8bytes)
++
++ ld.d t0, a1, 0
++ addi.d a1, a1, 8
++ addi.d a2, a2, -8
++ sll.d t1, t0, a6
++
++ or t2, a7, t1
++ srl.d a7, t0, a5
++ st.d t2, a4, 0
++ addi.d a4, a4, 8
++
++L(un_less_8bytes):
++ beqz a2, L(un_less_1byte)
++ bge t8, a2, 1f
++
++ ld.d t0, a1, 0
++ sll.d t0, t0, a6
++ or a7, a7, t0
++
++1:
++ srai.d a3, a2, 2
++ beqz a3, L(un_less_4bytes)
++
++ addi.d a2, a2, -4
++ st.w a7, a4, 0
++ addi.d a4, a4, 4
++ srai.d a7, a7, 32
++
++L(un_less_4bytes):
++ srai.d a3, a2, 1
++ beqz a3, L(un_less_2bytes)
++
++ addi.d a2, a2, -2
++ st.h a7, a4, 0
++ addi.d a4, a4, 2
++ srai.d a7, a7, 16
++
++L(un_less_2bytes):
++ beqz a2, L(un_less_1byte)
++ st.b a7, a4, 0
++
++L(un_less_1byte):
++ jr ra
++
++L(short_data):
++ pcaddi t1, 36
++ slli.d t2, a2, 3
++ add.d a4, a0, a2
++ sub.d t1, t1, t2
++ add.d a1, a1, a2
++ jr t1
++
++L(short_15_bytes):
++ ld.b t0, a1, -15
++ st.b t0, a4, -15
++L(short_14_bytes):
++ ld.b t0, a1, -14
++ st.b t0, a4, -14
++L(short_13_bytes):
++ ld.b t0, a1, -13
++ st.b t0, a4, -13
++L(short_12_bytes):
++ ld.b t0, a1, -12
++ st.b t0, a4, -12
++L(short_11_bytes):
++ ld.b t0, a1, -11
++ st.b t0, a4, -11
++L(short_10_bytes):
++ ld.b t0, a1, -10
++ st.b t0, a4, -10
++L(short_9_bytes):
++ ld.b t0, a1, -9
++ st.b t0, a4, -9
++L(short_8_bytes):
++ ld.b t0, a1, -8
++ st.b t0, a4, -8
++L(short_7_bytes):
++ ld.b t0, a1, -7
++ st.b t0, a4, -7
++L(short_6_bytes):
++ ld.b t0, a1, -6
++ st.b t0, a4, -6
++L(short_5_bytes):
++ ld.b t0, a1, -5
++ st.b t0, a4, -5
++L(short_4_bytes):
++ ld.b t0, a1, -4
++ st.b t0, a4, -4
++L(short_3_bytes):
++ ld.b t0, a1, -3
++ st.b t0, a4, -3
++L(short_2_bytes):
++ ld.b t0, a1, -2
++ st.b t0, a4, -2
++L(short_1_bytes):
++ ld.b t0, a1, -1
++ st.b t0, a4, -1
++ jr ra
++
++L(copy_back):
++ srai.d a3, a2, 4
++ beqz a3, L(back_short_data)
++
++ add.d a4, a0, a2
++ add.d a1, a1, a2
++
++ andi a5, a4, 0x7
++ andi a6, a1, 0x7
++ beqz a5, L(back_check_align)
++
++ sub.d a2, a2, a5
++ sub.d a1, a1, a5
++ sub.d a4, a4, a5
++
++ pcaddi t1, 18
++ slli.d t3, a5, 3
++ sub.d t1, t1, t3
++ jr t1
++
++ ld.b t0, a1, 6
++ st.b t0, a4, 6
++ ld.b t0, a1, 5
++ st.b t0, a4, 5
++ ld.b t0, a1, 4
++ st.b t0, a4, 4
++ ld.b t0, a1, 3
++ st.b t0, a4, 3
++ ld.b t0, a1, 2
++ st.b t0, a4, 2
++ ld.b t0, a1, 1
++ st.b t0, a4, 1
++ ld.b t0, a1, 0
++ st.b t0, a4, 0
++
++L(back_check_align):
++ bne a5, a6, L(back_unalign)
++
++ srai.d a3, a2, 4
++ beqz a3, L(back_less_16bytes)
++
++ andi a3, a2, 0x3f
++ beq a3, a2, L(back_less_64bytes)
++
++ sub.d t0, a2, a3
++ move a2, a3
++ sub.d a5, a1, t0
++
++L(back_loop_64bytes):
++ LD_64(a1, -64)
++ addi.d a1, a1, -64
++ ST_64(a4, -64)
++
++ addi.d a4, a4, -64
++ bne a1, a5, L(back_loop_64bytes)
++
++L(back_less_64bytes):
++ srai.d a3, a2, 5
++ beqz a3, L(back_less_32bytes)
++
++ ld.d t0, a1, -32
++ ld.d t1, a1, -24
++ ld.d t2, a1, -16
++ ld.d t3, a1, -8
++
++ addi.d a1, a1, -32
++ addi.d a2, a2, -32
++
++ st.d t0, a4, -32
++ st.d t1, a4, -24
++ st.d t2, a4, -16
++ st.d t3, a4, -8
++
++ addi.d a4, a4, -32
++
++L(back_less_32bytes):
++ srai.d a3, a2, 4
++ beqz a3, L(back_less_16bytes)
++
++ ld.d t0, a1, -16
++ ld.d t1, a1, -8
++
++ addi.d a2, a2, -16
++ addi.d a1, a1, -16
++
++ st.d t0, a4, -16
++ st.d t1, a4, -8
++ addi.d a4, a4, -16
++
++L(back_less_16bytes):
++ srai.d a3, a2, 3
++ beqz a3, L(back_less_8bytes)
++
++ ld.d t0, a1, -8
++ addi.d a2, a2, -8
++ addi.d a1, a1, -8
++
++ st.d t0, a4, -8
++ addi.d a4, a4, -8
++
++L(back_less_8bytes):
++ srai.d a3, a2, 2
++ beqz a3, L(back_less_4bytes)
++
++ ld.w t0, a1, -4
++ addi.d a2, a2, -4
++ addi.d a1, a1, -4
++
++ st.w t0, a4, -4
++ addi.d a4, a4, -4
++
++L(back_less_4bytes):
++ srai.d a3, a2, 1
++ beqz a3, L(back_less_2bytes)
++
++ ld.h t0, a1, -2
++ addi.d a2, a2, -2
++ addi.d a1, a1, -2
++
++ st.h t0, a4, -2
++ addi.d a4, a4, -2
++
++L(back_less_2bytes):
++ beqz a2, L(back_less_1byte)
++
++ ld.b t0, a1, -1
++ st.b t0, a4, -1
++
++L(back_less_1byte):
++ jr ra
++
++L(back_unalign):
++ andi t8, a1, 0x7
++ bstrins.d a1, zero, 2, 0
++
++ sub.d a6, zero, t8
++
++ ld.d t0, a1, 0
++ slli.d a6, a6, 3
++ slli.d a5, t8, 3
++ sll.d a7, t0, a6
++
++ srai.d a3, a2, 4
++ beqz a3, L(back_un_less_16bytes)
++
++ andi a3, a2, 0x3f
++ beq a3, a2, L(back_un_less_64bytes)
++
++ sub.d t0, a2, a3
++ move a2, a3
++ sub.d a3, a1, t0
++
++L(back_un_long_bytes):
++ ld.d t0, a1, -8
++ ld.d t1, a1, -16
++ ld.d t2, a1, -24
++ ld.d t3, a1, -32
++
++ sll.d t4, t0, a6
++ srl.d t0, t0, a5
++
++ sll.d t5, t1, a6
++ srl.d t1, t1, a5
++
++ sll.d t6, t2, a6
++ srl.d t2, t2, a5
++
++ sll.d t7, t3, a6
++ srl.d t3, t3, a5
++
++ or t0, t0, a7
++ or t1, t1, t4
++ or t2, t2, t5
++ or t3, t3, t6
++
++ ld.d t4, a1, -40
++ ld.d t5, a1, -48
++ ld.d t6, a1, -56
++ ld.d a7, a1, -64
++ st.d t0, a4, -8
++ st.d t1, a4, -16
++ st.d t2, a4, -24
++ st.d t3, a4, -32
++
++ addi.d a1, a1, -64
++
++ sll.d t0, t4, a6
++ srl.d t4, t4, a5
++
++ sll.d t1, t5, a6
++ srl.d t5, t5, a5
++
++ sll.d t2, t6, a6
++ srl.d t6, t6, a5
++
++ srl.d t3, a7, a5
++ sll.d a7, a7, a6
++
++ or t4, t7, t4
++ or t5, t0, t5
++ or t6, t1, t6
++ or t3, t2, t3
++
++ st.d t4, a4, -40
++ st.d t5, a4, -48
++ st.d t6, a4, -56
++ st.d t3, a4, -64
++
++ addi.d a4, a4, -64
++ bne a3, a1, L(back_un_long_bytes)
++
++L(back_un_less_64bytes):
++ srai.d a3, a2, 5
++ beqz a3, L(back_un_less_32bytes)
++
++ ld.d t0, a1, -8
++ ld.d t1, a1, -16
++ ld.d t2, a1, -24
++ ld.d t3, a1, -32
++
++ addi.d a1, a1, -32
++ addi.d a2, a2, -32
++
++ sll.d t4, t0, a6
++ srl.d t0, t0, a5
++
++ sll.d t5, t1, a6
++ srl.d t1, t1, a5
++
++ sll.d t6, t2, a6
++ srl.d t2, t2, a5
++
++ or t0, a7, t0
++
++ sll.d a7, t3, a6
++ srl.d t3, t3, a5
++
++ or t1, t4, t1
++ or t2, t5, t2
++ or t3, t6, t3
++
++ st.d t0, a4, -8
++ st.d t1, a4, -16
++ st.d t2, a4, -24
++ st.d t3, a4, -32
++
++ addi.d a4, a4, -32
++
++L(back_un_less_32bytes):
++ srai.d a3, a2, 4
++ beqz a3, L(back_un_less_16bytes)
++
++ ld.d t0, a1, -8
++ ld.d t1, a1, -16
++
++ addi.d a1, a1, -16
++ addi.d a2, a2, -16
++
++ sll.d t2, t0, a6
++ srl.d t3, t0, a5
++
++ srl.d t4, t1, a5
++ or t3, a7, t3
++ or t4, t2, t4
++ sll.d a7, t1, a6
++
++ st.d t3, a4, -8
++ st.d t4, a4, -16
++
++ addi.d a4, a4, -16
++
++L(back_un_less_16bytes):
++ srai.d a3, a2, 3
++ beqz a3, L(back_un_less_8bytes)
++
++ ld.d t0, a1, -8
++
++ addi.d a1, a1, -8
++ addi.d a2, a2, -8
++
++ srl.d t1, t0, a5
++ or t2, a7, t1
++ sll.d a7, t0, a6
++
++ st.d t2, a4, -8
++ addi.d a4, a4, -8
++
++L(back_un_less_8bytes):
++ beqz a2, L(back_end)
++ bge t8, a2, 1f
++
++ ld.d t0, a1, -8
++ srl.d t0, t0, a5
++ or a7, a7, t0
++
++1:
++ srai.d a3, a2, 2
++ beqz a3, L(back_un_less_4bytes)
++
++ srai.d t0, a7, 32
++ addi.d a2, a2, -4
++ st.w t0, a4, -4
++ addi.d a4, a4, -4
++ slli.d a7, a7, 32
++
++L(back_un_less_4bytes):
++ srai.d a3, a2, 1
++ beqz a3, L(back_un_less_2bytes)
++ srai.d t0, a7, 48
++ addi.d a2, a2, -2
++ st.h t0, a4, -2
++ addi.d a4, a4, -2
++ slli.d a7, a7, 16
++L(back_un_less_2bytes):
++ beqz a2, L(back_un_less_1byte)
++ srai.d t0, a7, 56
++ st.b t0, a4, -1
++L(back_un_less_1byte):
++ jr ra
++
++L(back_short_data):
++ pcaddi t1, 34
++ slli.d t2, a2, 3
++ sub.d t1, t1, t2
++ jr t1
++
++ ld.b t0, a1, 14
++ st.b t0, a0, 14
++ ld.b t0, a1, 13
++ st.b t0, a0, 13
++ ld.b t0, a1, 12
++ st.b t0, a0, 12
++ ld.b t0, a1, 11
++ st.b t0, a0, 11
++ ld.b t0, a1, 10
++ st.b t0, a0, 10
++ ld.b t0, a1, 9
++ st.b t0, a0, 9
++ ld.b t0, a1, 8
++ st.b t0, a0, 8
++ ld.b t0, a1, 7
++ st.b t0, a0, 7
++ ld.b t0, a1, 6
++ st.b t0, a0, 6
++ ld.b t0, a1, 5
++ st.b t0, a0, 5
++ ld.b t0, a1, 4
++ st.b t0, a0, 4
++ ld.b t0, a1, 3
++ st.b t0, a0, 3
++ ld.b t0, a1, 2
++ st.b t0, a0, 2
++ ld.b t0, a1, 1
++ st.b t0, a0, 1
++ ld.b t0, a1, 0
++ st.b t0, a0, 0
++L(back_end):
++ jr ra
++
++END(MEMCPY_NAME)
++
++libc_hidden_builtin_def (MEMMOVE_NAME)
++libc_hidden_builtin_def (MEMCPY_NAME)
+diff --git a/sysdeps/loongarch/lp64/multiarch/memcpy-lasx.S b/sysdeps/loongarch/lp64/multiarch/memcpy-lasx.S
+new file mode 100644
+index 00000000..4aae5bf8
+--- /dev/null
++++ b/sysdeps/loongarch/lp64/multiarch/memcpy-lasx.S
+@@ -0,0 +1,20 @@
++/* Optimized memcpy implementation using Loongarch LASX instructions.
++ Copyright (C) 2023 Free Software Foundation, Inc.
++
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library. If not, see
++ <https://www.gnu.org/licenses/>. */
++
++/* memcpy is part of memmove.S */
+diff --git a/sysdeps/loongarch/lp64/multiarch/memcpy-lsx.S b/sysdeps/loongarch/lp64/multiarch/memcpy-lsx.S
+new file mode 100644
+index 00000000..6ebbe7a2
+--- /dev/null
++++ b/sysdeps/loongarch/lp64/multiarch/memcpy-lsx.S
+@@ -0,0 +1,20 @@
++/* Optimized memcpy implementation using Loongarch LSX instructions.
++ Copyright (C) 2023 Free Software Foundation, Inc.
++
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library. If not, see
++ <https://www.gnu.org/licenses/>. */
++
++/* memcpy is part of memmove.S */
+diff --git a/sysdeps/loongarch/lp64/multiarch/memcpy-unaligned.S b/sysdeps/loongarch/lp64/multiarch/memcpy-unaligned.S
+new file mode 100644
+index 00000000..8e60a22d
+--- /dev/null
++++ b/sysdeps/loongarch/lp64/multiarch/memcpy-unaligned.S
+@@ -0,0 +1,247 @@
++/* Optimized unaligned memcpy implementation using basic Loongarch instructions.
++ Copyright (C) 2023 Free Software Foundation, Inc.
++
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library. If not, see
++ <https://www.gnu.org/licenses/>. */
++
++#include <sysdep.h>
++#include <sys/regdef.h>
++#include <sys/asm.h>
++
++#if IS_IN (libc)
++
++# define MEMCPY_NAME __memcpy_unaligned
++
++# define LD_64(reg, n) \
++ ld.d t0, reg, n; \
++ ld.d t1, reg, n + 8; \
++ ld.d t2, reg, n + 16; \
++ ld.d t3, reg, n + 24; \
++ ld.d t4, reg, n + 32; \
++ ld.d t5, reg, n + 40; \
++ ld.d t6, reg, n + 48; \
++ ld.d t7, reg, n + 56;
++
++# define ST_64(reg, n) \
++ st.d t0, reg, n; \
++ st.d t1, reg, n + 8; \
++ st.d t2, reg, n + 16; \
++ st.d t3, reg, n + 24; \
++ st.d t4, reg, n + 32; \
++ st.d t5, reg, n + 40; \
++ st.d t6, reg, n + 48; \
++ st.d t7, reg, n + 56;
++
++LEAF(MEMCPY_NAME, 3)
++ add.d a4, a1, a2
++ add.d a3, a0, a2
++ li.w a6, 16
++ bge a6, a2, L(less_16bytes)
++
++ li.w a6, 128
++ blt a6, a2, L(long_bytes)
++ li.w a6, 64
++ blt a6, a2, L(more_64bytes)
++
++ li.w a6, 32
++ blt a6, a2, L(more_32bytes)
++
++ ld.d t0, a1, 0
++ ld.d t1, a1, 8
++ ld.d t2, a4, -16
++ ld.d t3, a4, -8
++
++ st.d t0, a0, 0
++ st.d t1, a0, 8
++ st.d t2, a3, -16
++ st.d t3, a3, -8
++ jr ra
++
++L(more_64bytes):
++ srli.d t8, a0, 3
++ slli.d t8, t8, 3
++ addi.d t8, t8, 0x8
++ sub.d a7, a0, t8
++
++ ld.d t0, a1, 0
++ sub.d a1, a1, a7
++ st.d t0, a0, 0
++ add.d a7, a7, a2
++ addi.d a7, a7, -0x20
++
++L(loop_32):
++ ld.d t0, a1, 0
++ ld.d t1, a1, 8
++ ld.d t2, a1, 16
++ ld.d t3, a1, 24
++
++ st.d t0, t8, 0
++ st.d t1, t8, 8
++ st.d t2, t8, 16
++ st.d t3, t8, 24
++
++ addi.d t8, t8, 0x20
++ addi.d a1, a1, 0x20
++ addi.d a7, a7, -0x20
++ blt zero, a7, L(loop_32)
++
++ ld.d t4, a4, -32
++ ld.d t5, a4, -24
++ ld.d t6, a4, -16
++ ld.d t7, a4, -8
++
++ st.d t4, a3, -32
++ st.d t5, a3, -24
++ st.d t6, a3, -16
++ st.d t7, a3, -8
++
++ jr ra
++
++L(more_32bytes):
++ ld.d t0, a1, 0
++ ld.d t1, a1, 8
++ ld.d t2, a1, 16
++ ld.d t3, a1, 24
++
++ ld.d t4, a4, -32
++ ld.d t5, a4, -24
++ ld.d t6, a4, -16
++ ld.d t7, a4, -8
++
++ st.d t0, a0, 0
++ st.d t1, a0, 8
++ st.d t2, a0, 16
++ st.d t3, a0, 24
++
++ st.d t4, a3, -32
++ st.d t5, a3, -24
++ st.d t6, a3, -16
++ st.d t7, a3, -8
++
++ jr ra
++
++L(less_16bytes):
++ srai.d a6, a2, 3
++ beqz a6, L(less_8bytes)
++
++ ld.d t0, a1, 0
++ ld.d t1, a4, -8
++ st.d t0, a0, 0
++ st.d t1, a3, -8
++
++ jr ra
++
++L(less_8bytes):
++ srai.d a6, a2, 2
++ beqz a6, L(less_4bytes)
++
++ ld.w t0, a1, 0
++ ld.w t1, a4, -4
++ st.w t0, a0, 0
++ st.w t1, a3, -4
++
++ jr ra
++
++L(less_4bytes):
++ srai.d a6, a2, 1
++ beqz a6, L(less_2bytes)
++
++ ld.h t0, a1, 0
++ ld.h t1, a4, -2
++ st.h t0, a0, 0
++ st.h t1, a3, -2
++
++ jr ra
++
++L(less_2bytes):
++ beqz a2, L(less_1bytes)
++
++ ld.b t0, a1, 0
++ st.b t0, a0, 0
++ jr ra
++
++L(less_1bytes):
++ jr ra
++
++L(long_bytes):
++ srli.d t8, a0, 3
++ slli.d t8, t8, 3
++ beq a0, t8, L(start)
++ ld.d t0, a1, 0
++
++ addi.d t8, t8, 0x8
++ st.d t0, a0, 0
++ sub.d a7, a0, t8
++ sub.d a1, a1, a7
++
++L(start):
++ addi.d a5, a3, -0x80
++ blt a5, t8, L(align_end_proc)
++
++L(loop_128):
++ LD_64(a1, 0)
++ ST_64(t8, 0)
++ LD_64(a1, 64)
++ addi.d a1, a1, 0x80
++ ST_64(t8, 64)
++ addi.d t8, t8, 0x80
++ bge a5, t8, L(loop_128)
++
++L(align_end_proc):
++ sub.d a2, a3, t8
++ pcaddi t1, 34
++ andi t2, a2, 0x78
++ sub.d t1, t1, t2
++ jr t1
++
++ ld.d t0, a1, 112
++ st.d t0, t8, 112
++ ld.d t0, a1, 104
++ st.d t0, t8, 104
++ ld.d t0, a1, 96
++ st.d t0, t8, 96
++ ld.d t0, a1, 88
++ st.d t0, t8, 88
++ ld.d t0, a1, 80
++ st.d t0, t8, 80
++ ld.d t0, a1, 72
++ st.d t0, t8, 72
++ ld.d t0, a1, 64
++ st.d t0, t8, 64
++ ld.d t0, a1, 56
++ st.d t0, t8, 56
++ ld.d t0, a1, 48
++ st.d t0, t8, 48
++ ld.d t0, a1, 40
++ st.d t0, t8, 40
++ ld.d t0, a1, 32
++ st.d t0, t8, 32
++ ld.d t0, a1, 24
++ st.d t0, t8, 24
++ ld.d t0, a1, 16
++ st.d t0, t8, 16
++ ld.d t0, a1, 8
++ st.d t0, t8, 8
++ ld.d t0, a1, 0
++ st.d t0, t8, 0
++ ld.d t0, a4, -8
++ st.d t0, a3, -8
++
++ jr ra
++END(MEMCPY_NAME)
++
++libc_hidden_builtin_def (MEMCPY_NAME)
++#endif
+diff --git a/sysdeps/loongarch/lp64/multiarch/memcpy.c b/sysdeps/loongarch/lp64/multiarch/memcpy.c
+new file mode 100644
+index 00000000..93b238ce
+--- /dev/null
++++ b/sysdeps/loongarch/lp64/multiarch/memcpy.c
+@@ -0,0 +1,37 @@
++/* Multiple versions of memcpy.
++ All versions must be listed in ifunc-impl-list.c.
++ Copyright (C) 2023 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <https://www.gnu.org/licenses/>. */
++
++/* Define multiple versions only for the definition in libc. */
++#if IS_IN (libc)
++# define memcpy __redirect_memcpy
++# include <string.h>
++# undef memcpy
++
++# define SYMBOL_NAME memcpy
++# include "ifunc-lasx.h"
++
++libc_ifunc_redirected (__redirect_memcpy, memcpy,
++ IFUNC_SELECTOR ());
++
++# ifdef SHARED
++__hidden_ver1 (memcpy, __GI_memcpy, __redirect_memcpy)
++ __attribute__ ((visibility ("hidden"))) __attribute_copy__ (memcmp);
++# endif
++
++#endif
+diff --git a/sysdeps/loongarch/lp64/multiarch/memmove-aligned.S b/sysdeps/loongarch/lp64/multiarch/memmove-aligned.S
+new file mode 100644
+index 00000000..5354f383
+--- /dev/null
++++ b/sysdeps/loongarch/lp64/multiarch/memmove-aligned.S
+@@ -0,0 +1,20 @@
++/* Optimized memmove_aligned implementation using basic Loongarch instructions.
++ Copyright (C) 2023 Free Software Foundation, Inc.
++
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library. If not, see
++ <https://www.gnu.org/licenses/>. */
++
++/* memmove_aligned is part of memcpy_aligned, see memcpy-aligned.S. */
+diff --git a/sysdeps/loongarch/lp64/multiarch/memmove-lasx.S b/sysdeps/loongarch/lp64/multiarch/memmove-lasx.S
+new file mode 100644
+index 00000000..ff68e7a2
+--- /dev/null
++++ b/sysdeps/loongarch/lp64/multiarch/memmove-lasx.S
+@@ -0,0 +1,287 @@
++/* Optimized memmove implementation using Loongarch LASX instructions.
++ Copyright (C) 2023 Free Software Foundation, Inc.
++
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library. If not, see
++ <https://www.gnu.org/licenses/>. */
++
++#include <sysdep.h>
++#include <sys/regdef.h>
++#include <sys/asm.h>
++
++#if IS_IN (libc) && !defined __loongarch_soft_float
++
++#ifndef MEMCPY_NAME
++# define MEMCPY_NAME __memcpy_lasx
++#endif
++
++#ifndef MEMMOVE_NAME
++# define MEMMOVE_NAME __memmove_lasx
++#endif
++
++LEAF(MEMCPY_NAME, 6)
++ li.d t0, 32
++ add.d a3, a0, a2
++ add.d a4, a1, a2
++ bgeu t0, a2, L(less_32bytes)
++
++ li.d t1, 64
++ bltu t1, a2, L(copy_long)
++ xvld xr0, a1, 0
++ xvld xr1, a4, -32
++
++ xvst xr0, a0, 0
++ xvst xr1, a3, -32
++ jr ra
++L(less_32bytes):
++ srli.d t0, a2, 4
++
++ beqz t0, L(less_16bytes)
++ vld vr0, a1, 0
++ vld vr1, a4, -16
++ vst vr0, a0, 0
++
++
++ vst vr1, a3, -16
++ jr ra
++L(less_16bytes):
++ srli.d t0, a2, 3
++ beqz t0, L(less_8bytes)
++
++ ld.d t0, a1, 0
++ ld.d t1, a4, -8
++ st.d t0, a0, 0
++ st.d t1, a3, -8
++
++ jr ra
++L(less_8bytes):
++ srli.d t0, a2, 2
++ beqz t0, L(less_4bytes)
++ ld.w t0, a1, 0
++
++ ld.w t1, a4, -4
++ st.w t0, a0, 0
++ st.w t1, a3, -4
++ jr ra
++
++
++L(less_4bytes):
++ srli.d t0, a2, 1
++ beqz t0, L(less_2bytes)
++ ld.h t0, a1, 0
++ ld.h t1, a4, -2
++
++ st.h t0, a0, 0
++ st.h t1, a3, -2
++ jr ra
++L(less_2bytes):
++ beqz a2, L(less_1bytes)
++
++ ld.b t0, a1, 0
++ st.b t0, a0, 0
++L(less_1bytes):
++ jr ra
++END(MEMCPY_NAME)
++
++LEAF(MEMMOVE_NAME, 6)
++
++ li.d t0, 32
++ add.d a3, a0, a2
++ add.d a4, a1, a2
++ bgeu t0, a2, L(less_32bytes)
++
++ li.d t1, 64
++ bltu t1, a2, L(move_long)
++ xvld xr0, a1, 0
++ xvld xr1, a4, -32
++
++ xvst xr0, a0, 0
++ xvst xr1, a3, -32
++ jr ra
++L(move_long):
++ sub.d t2, a0, a1
++
++ bltu t2, a2, L(copy_back)
++L(copy_long):
++ andi t2, a0, 0x1f
++ addi.d a2, a2, -1
++ sub.d t2, t0, t2
++
++
++ xvld xr8, a1, 0
++ xvld xr9, a4, -32
++ sub.d t3, a2, t2
++ add.d a5, a0, t2
++
++ andi a2, t3, 0xff
++ add.d a1, a1, t2
++ beq a2, t3, L(lt256)
++ sub.d a6, a4, a2
++
++ addi.d a6, a6, -1
++L(loop_256):
++ xvld xr0, a1, 0
++ xvld xr1, a1, 32
++ xvld xr2, a1, 64
++
++ xvld xr3, a1, 96
++ xvld xr4, a1, 128
++ xvld xr5, a1, 160
++ xvld xr6, a1, 192
++
++
++ xvld xr7, a1, 224
++ addi.d a1, a1, 256
++ xvst xr0, a5, 0
++ xvst xr1, a5, 32
++
++ xvst xr2, a5, 64
++ xvst xr3, a5, 96
++ xvst xr4, a5, 128
++ xvst xr5, a5, 160
++
++ xvst xr6, a5, 192
++ xvst xr7, a5, 224
++ addi.d a5, a5, 256
++ bne a1, a6, L(loop_256)
++
++L(lt256):
++ srli.d t2, a2, 7
++ beqz t2, L(lt128)
++ xvld xr0, a1, 0
++ xvld xr1, a1, 32
++
++
++ xvld xr2, a1, 64
++ xvld xr3, a1, 96
++ addi.d a1, a1, 128
++ addi.d a2, a2, -128
++
++ xvst xr0, a5, 0
++ xvst xr1, a5, 32
++ xvst xr2, a5, 64
++ xvst xr3, a5, 96
++
++ addi.d a5, a5, 128
++L(lt128):
++ bltu a2, t1, L(lt64)
++ xvld xr0, a1, 0
++ xvld xr1, a1, 32
++
++ addi.d a1, a1, 64
++ addi.d a2, a2, -64
++ xvst xr0, a5, 0
++ xvst xr1, a5, 32
++
++
++ addi.d a5, a5, 64
++L(lt64):
++ bltu a2, t0, L(lt32)
++ xvld xr0, a1, 0
++ xvst xr0, a5, 0
++
++L(lt32):
++ xvst xr8, a0, 0
++ xvst xr9, a3, -32
++ jr ra
++ nop
++
++L(copy_back):
++ addi.d a3, a3, -1
++ addi.d a2, a2, -2
++ andi t2, a3, 0x1f
++ xvld xr8, a1, 0
++
++ xvld xr9, a4, -32
++ sub.d t3, a2, t2
++ sub.d a5, a3, t2
++ sub.d a4, a4, t2
++
++
++ andi a2, t3, 0xff
++ beq a2, t3, L(back_lt256)
++ add.d a6, a1, a2
++ addi.d a6, a6, 2
++
++L(back_loop_256):
++ xvld xr0, a4, -33
++ xvld xr1, a4, -65
++ xvld xr2, a4, -97
++ xvld xr3, a4, -129
++
++ xvld xr4, a4, -161
++ xvld xr5, a4, -193
++ xvld xr6, a4, -225
++ xvld xr7, a4, -257
++
++ addi.d a4, a4, -256
++ xvst xr0, a5, -32
++ xvst xr1, a5, -64
++ xvst xr2, a5, -96
++
++
++ xvst xr3, a5, -128
++ xvst xr4, a5, -160
++ xvst xr5, a5, -192
++ xvst xr6, a5, -224
++
++ xvst xr7, a5, -256
++ addi.d a5, a5, -256
++ bne a4, a6, L(back_loop_256)
++L(back_lt256):
++ srli.d t2, a2, 7
++
++ beqz t2, L(back_lt128)
++ xvld xr0, a4, -33
++ xvld xr1, a4, -65
++ xvld xr2, a4, -97
++
++ xvld xr3, a4, -129
++ addi.d a2, a2, -128
++ addi.d a4, a4, -128
++ xvst xr0, a5, -32
++
++
++ xvst xr1, a5, -64
++ xvst xr2, a5, -96
++ xvst xr3, a5, -128
++ addi.d a5, a5, -128
++
++L(back_lt128):
++ blt a2, t1, L(back_lt64)
++ xvld xr0, a4, -33
++ xvld xr1, a4, -65
++ addi.d a2, a2, -64
++
++ addi.d a4, a4, -64
++ xvst xr0, a5, -32
++ xvst xr1, a5, -64
++ addi.d a5, a5, -64
++
++L(back_lt64):
++ bltu a2, t0, L(back_lt32)
++ xvld xr0, a4, -33
++ xvst xr0, a5, -32
++L(back_lt32):
++ xvst xr8, a0, 0
++
++
++ xvst xr9, a3, -31
++ jr ra
++END(MEMMOVE_NAME)
++
++libc_hidden_builtin_def (MEMCPY_NAME)
++libc_hidden_builtin_def (MEMMOVE_NAME)
++#endif
+diff --git a/sysdeps/loongarch/lp64/multiarch/memmove-lsx.S b/sysdeps/loongarch/lp64/multiarch/memmove-lsx.S
+new file mode 100644
+index 00000000..9e1502a7
+--- /dev/null
++++ b/sysdeps/loongarch/lp64/multiarch/memmove-lsx.S
+@@ -0,0 +1,534 @@
++/* Optimized memmove implementation using Loongarch LSX instructions.
++ Copyright (C) 2023 Free Software Foundation, Inc.
++
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library. If not, see
++ <https://www.gnu.org/licenses/>. */
++
++#include <sysdep.h>
++#include <sys/regdef.h>
++#include <sys/asm.h>
++
++#if IS_IN (libc) && !defined __loongarch_soft_float
++
++# define MEMCPY_NAME __memcpy_lsx
++# define MEMMOVE_NAME __memmove_lsx
++
++LEAF(MEMCPY_NAME, 6)
++ li.d t6, 16
++ add.d a3, a0, a2
++ add.d a4, a1, a2
++ bgeu t6, a2, L(less_16bytes)
++
++ li.d t8, 64
++ li.d t7, 32
++ bltu t8, a2, L(copy_long)
++ bltu t7, a2, L(more_32bytes)
++
++ vld vr0, a1, 0
++ vld vr1, a4, -16
++ vst vr0, a0, 0
++ vst vr1, a3, -16
++
++ jr ra
++L(more_32bytes):
++ vld vr0, a1, 0
++ vld vr1, a1, 16
++ vld vr2, a4, -32
++
++
++ vld vr3, a4, -16
++ vst vr0, a0, 0
++ vst vr1, a0, 16
++ vst vr2, a3, -32
++
++ vst vr3, a3, -16
++ jr ra
++L(less_16bytes):
++ srli.d t0, a2, 3
++ beqz t0, L(less_8bytes)
++
++ vldrepl.d vr0, a1, 0
++ vldrepl.d vr1, a4, -8
++ vstelm.d vr0, a0, 0, 0
++ vstelm.d vr1, a3, -8, 0
++
++ jr ra
++L(less_8bytes):
++ srli.d t0, a2, 2
++ beqz t0, L(less_4bytes)
++ vldrepl.w vr0, a1, 0
++
++
++ vldrepl.w vr1, a4, -4
++ vstelm.w vr0, a0, 0, 0
++ vstelm.w vr1, a3, -4, 0
++ jr ra
++
++L(less_4bytes):
++ srli.d t0, a2, 1
++ beqz t0, L(less_2bytes)
++ vldrepl.h vr0, a1, 0
++ vldrepl.h vr1, a4, -2
++
++ vstelm.h vr0, a0, 0, 0
++ vstelm.h vr1, a3, -2, 0
++ jr ra
++L(less_2bytes):
++ beqz a2, L(less_1bytes)
++
++ ld.b t0, a1, 0
++ st.b t0, a0, 0
++L(less_1bytes):
++ jr ra
++ nop
++END(MEMCPY_NAME)
++
++LEAF(MEMMOVE_NAME, 6)
++ li.d t6, 16
++ add.d a3, a0, a2
++ add.d a4, a1, a2
++ bgeu t6, a2, L(less_16bytes)
++
++ li.d t8, 64
++ li.d t7, 32
++ bltu t8, a2, L(move_long)
++ bltu t7, a2, L(more_32bytes)
++
++ vld vr0, a1, 0
++ vld vr1, a4, -16
++ vst vr0, a0, 0
++ vst vr1, a3, -16
++
++ jr ra
++ nop
++L(move_long):
++ sub.d t0, a0, a1
++ bltu t0, a2, L(copy_back)
++
++
++L(copy_long):
++ vld vr2, a1, 0
++ andi t0, a0, 0xf
++ sub.d t0, t6, t0
++ add.d a1, a1, t0
++
++ sub.d a2, a2, t0
++ andi t1, a1, 0xf
++ bnez t1, L(unaligned)
++ vld vr0, a1, 0
++
++ addi.d a2, a2, -16
++ vst vr2, a0, 0
++ andi t2, a2, 0x7f
++ add.d a5, a0, t0
++
++ beq a2, t2, L(al_less_128)
++ sub.d t3, a2, t2
++ move a2, t2
++ add.d a6, a1, t3
++
++
++L(al_loop):
++ vld vr1, a1, 16
++ vld vr2, a1, 32
++ vld vr3, a1, 48
++ vld vr4, a1, 64
++
++ vld vr5, a1, 80
++ vld vr6, a1, 96
++ vld vr7, a1, 112
++ vst vr0, a5, 0
++
++ vld vr0, a1, 128
++ addi.d a1, a1, 128
++ vst vr1, a5, 16
++ vst vr2, a5, 32
++
++ vst vr3, a5, 48
++ vst vr4, a5, 64
++ vst vr5, a5, 80
++ vst vr6, a5, 96
++
++
++ vst vr7, a5, 112
++ addi.d a5, a5, 128
++ bne a1, a6, L(al_loop)
++L(al_less_128):
++ blt a2, t8, L(al_less_64)
++
++ vld vr1, a1, 16
++ vld vr2, a1, 32
++ vld vr3, a1, 48
++ addi.d a2, a2, -64
++
++ vst vr0, a5, 0
++ vld vr0, a1, 64
++ addi.d a1, a1, 64
++ vst vr1, a5, 16
++
++ vst vr2, a5, 32
++ vst vr3, a5, 48
++ addi.d a5, a5, 64
++L(al_less_64):
++ blt a2, t7, L(al_less_32)
++
++
++ vld vr1, a1, 16
++ addi.d a2, a2, -32
++ vst vr0, a5, 0
++ vld vr0, a1, 32
++
++ addi.d a1, a1, 32
++ vst vr1, a5, 16
++ addi.d a5, a5, 32
++L(al_less_32):
++ blt a2, t6, L(al_less_16)
++
++ vst vr0, a5, 0
++ vld vr0, a1, 16
++ addi.d a5, a5, 16
++L(al_less_16):
++ vld vr1, a4, -16
++
++ vst vr0, a5, 0
++ vst vr1, a3, -16
++ jr ra
++ nop
++
++
++L(magic_num):
++ .dword 0x0706050403020100
++ .dword 0x0f0e0d0c0b0a0908
++L(unaligned):
++ pcaddi t2, -4
++ bstrins.d a1, zero, 3, 0
++ vld vr8, t2, 0
++ vld vr0, a1, 0
++
++ vld vr1, a1, 16
++ addi.d a2, a2, -16
++ vst vr2, a0, 0
++ add.d a5, a0, t0
++
++ vreplgr2vr.b vr9, t1
++ andi t2, a2, 0x7f
++ vadd.b vr9, vr9, vr8
++ addi.d a1, a1, 32
++
++
++ beq t2, a2, L(un_less_128)
++ sub.d t3, a2, t2
++ move a2, t2
++ add.d a6, a1, t3
++
++L(un_loop):
++ vld vr2, a1, 0
++ vld vr3, a1, 16
++ vld vr4, a1, 32
++ vld vr5, a1, 48
++
++ vld vr6, a1, 64
++ vld vr7, a1, 80
++ vshuf.b vr8, vr1, vr0, vr9
++ vld vr0, a1, 96
++
++ vst vr8, a5, 0
++ vshuf.b vr8, vr2, vr1, vr9
++ vld vr1, a1, 112
++ vst vr8, a5, 16
++
++
++ addi.d a1, a1, 128
++ vshuf.b vr2, vr3, vr2, vr9
++ vshuf.b vr3, vr4, vr3, vr9
++ vst vr2, a5, 32
++
++ vshuf.b vr4, vr5, vr4, vr9
++ vst vr3, a5, 48
++ vshuf.b vr5, vr6, vr5, vr9
++ vst vr4, a5, 64
++
++ vshuf.b vr6, vr7, vr6, vr9
++ vst vr5, a5, 80
++ vshuf.b vr7, vr0, vr7, vr9
++ vst vr6, a5, 96
++
++ vst vr7, a5, 112
++ addi.d a5, a5, 128
++ bne a1, a6, L(un_loop)
++L(un_less_128):
++ blt a2, t8, L(un_less_64)
++
++
++ vld vr2, a1, 0
++ vld vr3, a1, 16
++ vshuf.b vr4, vr1, vr0, vr9
++ vld vr0, a1, 32
++
++ vst vr4, a5, 0
++ addi.d a2, a2, -64
++ vshuf.b vr4, vr2, vr1, vr9
++ vld vr1, a1, 48
++
++ addi.d a1, a1, 64
++ vst vr4, a5, 16
++ vshuf.b vr2, vr3, vr2, vr9
++ vshuf.b vr3, vr0, vr3, vr9
++
++ vst vr2, a5, 32
++ vst vr3, a5, 48
++ addi.d a5, a5, 64
++L(un_less_64):
++ blt a2, t7, L(un_less_32)
++
++
++ vshuf.b vr3, vr1, vr0, vr9
++ vld vr0, a1, 0
++ vst vr3, a5, 0
++ addi.d a2, a2, -32
++
++ vshuf.b vr3, vr0, vr1, vr9
++ vld vr1, a1, 16
++ addi.d a1, a1, 32
++ vst vr3, a5, 16
++
++ addi.d a5, a5, 32
++L(un_less_32):
++ blt a2, t6, L(un_less_16)
++ vshuf.b vr2, vr1, vr0, vr9
++ vor.v vr0, vr1, vr1
++
++ vld vr1, a1, 0
++ vst vr2, a5, 0
++ addi.d a5, a5, 16
++L(un_less_16):
++ vld vr2, a4, -16
++
++
++ vshuf.b vr0, vr1, vr0, vr9
++ vst vr0, a5, 0
++ vst vr2, a3, -16
++ jr ra
++
++L(copy_back):
++ addi.d t0, a3, -1
++ vld vr2, a4, -16
++ andi t0, t0, 0xf
++ addi.d t0, t0, 1
++
++ sub.d a4, a4, t0
++ sub.d a2, a2, t0
++ andi t1, a4, 0xf
++ bnez t1, L(back_unaligned)
++
++ vld vr0, a4, -16
++ addi.d a2, a2, -16
++ vst vr2, a3, -16
++ andi t2, a2, 0x7f
++
++
++ sub.d a3, a3, t0
++ beq t2, a2, L(back_al_less_128)
++ sub.d t3, a2, t2
++ move a2, t2
++
++ sub.d a6, a4, t3
++L(back_al_loop):
++ vld vr1, a4, -32
++ vld vr2, a4, -48
++ vld vr3, a4, -64
++
++ vld vr4, a4, -80
++ vld vr5, a4, -96
++ vld vr6, a4, -112
++ vld vr7, a4, -128
++
++ vst vr0, a3, -16
++ vld vr0, a4, -144
++ addi.d a4, a4, -128
++ vst vr1, a3, -32
++
++
++ vst vr2, a3, -48
++ vst vr3, a3, -64
++ vst vr4, a3, -80
++ vst vr5, a3, -96
++
++ vst vr6, a3, -112
++ vst vr7, a3, -128
++ addi.d a3, a3, -128
++ bne a4, a6, L(back_al_loop)
++
++L(back_al_less_128):
++ blt a2, t8, L(back_al_less_64)
++ vld vr1, a4, -32
++ vld vr2, a4, -48
++ vld vr3, a4, -64
++
++ addi.d a2, a2, -64
++ vst vr0, a3, -16
++ vld vr0, a4, -80
++ addi.d a4, a4, -64
++
++
++ vst vr1, a3, -32
++ vst vr2, a3, -48
++ vst vr3, a3, -64
++ addi.d a3, a3, -64
++
++L(back_al_less_64):
++ blt a2, t7, L(back_al_less_32)
++ vld vr1, a4, -32
++ addi.d a2, a2, -32
++ vst vr0, a3, -16
++
++ vld vr0, a4, -48
++ vst vr1, a3, -32
++ addi.d a3, a3, -32
++ addi.d a4, a4, -32
++
++L(back_al_less_32):
++ blt a2, t6, L(back_al_less_16)
++ vst vr0, a3, -16
++ vld vr0, a4, -32
++ addi.d a3, a3, -16
++
++
++L(back_al_less_16):
++ vld vr1, a1, 0
++ vst vr0, a3, -16
++ vst vr1, a0, 0
++ jr ra
++
++L(magic_num_2):
++ .dword 0x0706050403020100
++ .dword 0x0f0e0d0c0b0a0908
++L(back_unaligned):
++ pcaddi t2, -4
++ bstrins.d a4, zero, 3, 0
++ vld vr8, t2, 0
++ vld vr0, a4, 0
++
++ vld vr1, a4, -16
++ addi.d a2, a2, -16
++ vst vr2, a3, -16
++ sub.d a3, a3, t0
++
++
++ vreplgr2vr.b vr9, t1
++ andi t2, a2, 0x7f
++ vadd.b vr9, vr9, vr8
++ addi.d a4, a4, -16
++
++ beq t2, a2, L(back_un_less_128)
++ sub.d t3, a2, t2
++ move a2, t2
++ sub.d a6, a4, t3
++
++L(back_un_loop):
++ vld vr2, a4, -16
++ vld vr3, a4, -32
++ vld vr4, a4, -48
++
++ vld vr5, a4, -64
++ vld vr6, a4, -80
++ vld vr7, a4, -96
++ vshuf.b vr8, vr0, vr1, vr9
++
++
++ vld vr0, a4, -112
++ vst vr8, a3, -16
++ vshuf.b vr8, vr1, vr2, vr9
++ vld vr1, a4, -128
++
++ vst vr8, a3, -32
++ addi.d a4, a4, -128
++ vshuf.b vr2, vr2, vr3, vr9
++ vshuf.b vr3, vr3, vr4, vr9
++
++ vst vr2, a3, -48
++ vshuf.b vr4, vr4, vr5, vr9
++ vst vr3, a3, -64
++ vshuf.b vr5, vr5, vr6, vr9
++
++ vst vr4, a3, -80
++ vshuf.b vr6, vr6, vr7, vr9
++ vst vr5, a3, -96
++ vshuf.b vr7, vr7, vr0, vr9
++
++
++ vst vr6, a3, -112
++ vst vr7, a3, -128
++ addi.d a3, a3, -128
++ bne a4, a6, L(back_un_loop)
++
++L(back_un_less_128):
++ blt a2, t8, L(back_un_less_64)
++ vld vr2, a4, -16
++ vld vr3, a4, -32
++ vshuf.b vr4, vr0, vr1, vr9
++
++ vld vr0, a4, -48
++ vst vr4, a3, -16
++ addi.d a2, a2, -64
++ vshuf.b vr4, vr1, vr2, vr9
++
++ vld vr1, a4, -64
++ addi.d a4, a4, -64
++ vst vr4, a3, -32
++ vshuf.b vr2, vr2, vr3, vr9
++
++
++ vshuf.b vr3, vr3, vr0, vr9
++ vst vr2, a3, -48
++ vst vr3, a3, -64
++ addi.d a3, a3, -64
++
++L(back_un_less_64):
++ blt a2, t7, L(back_un_less_32)
++ vshuf.b vr3, vr0, vr1, vr9
++ vld vr0, a4, -16
++ vst vr3, a3, -16
++
++ addi.d a2, a2, -32
++ vshuf.b vr3, vr1, vr0, vr9
++ vld vr1, a4, -32
++ addi.d a4, a4, -32
++
++ vst vr3, a3, -32
++ addi.d a3, a3, -32
++L(back_un_less_32):
++ blt a2, t6, L(back_un_less_16)
++ vshuf.b vr2, vr0, vr1, vr9
++
++
++ vor.v vr0, vr1, vr1
++ vld vr1, a4, -16
++ vst vr2, a3, -16
++ addi.d a3, a3, -16
++
++L(back_un_less_16):
++ vld vr2, a1, 0
++ vshuf.b vr0, vr0, vr1, vr9
++ vst vr0, a3, -16
++ vst vr2, a0, 0
++
++ jr ra
++END(MEMMOVE_NAME)
++
++libc_hidden_builtin_def (MEMCPY_NAME)
++libc_hidden_builtin_def (MEMMOVE_NAME)
++#endif
+diff --git a/sysdeps/loongarch/lp64/multiarch/memmove-unaligned.S b/sysdeps/loongarch/lp64/multiarch/memmove-unaligned.S
+new file mode 100644
+index 00000000..90a64b6b
+--- /dev/null
++++ b/sysdeps/loongarch/lp64/multiarch/memmove-unaligned.S
+@@ -0,0 +1,380 @@
++/* Optimized memmove_unaligned implementation using basic Loongarch instructions.
++ Copyright (C) 2023 Free Software Foundation, Inc.
++
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library. If not, see
++ <https://www.gnu.org/licenses/>. */
++
++#include <sysdep.h>
++#include <sys/regdef.h>
++#include <sys/asm.h>
++
++#if IS_IN (libc)
++
++# define MEMMOVE_NAME __memmove_unaligned
++
++# define LD_64(reg, n) \
++ ld.d t0, reg, n; \
++ ld.d t1, reg, n + 8; \
++ ld.d t2, reg, n + 16; \
++ ld.d t3, reg, n + 24; \
++ ld.d t4, reg, n + 32; \
++ ld.d t5, reg, n + 40; \
++ ld.d t6, reg, n + 48; \
++ ld.d t7, reg, n + 56;
++
++# define ST_64(reg, n) \
++ st.d t0, reg, n; \
++ st.d t1, reg, n + 8; \
++ st.d t2, reg, n + 16; \
++ st.d t3, reg, n + 24; \
++ st.d t4, reg, n + 32; \
++ st.d t5, reg, n + 40; \
++ st.d t6, reg, n + 48; \
++ st.d t7, reg, n + 56;
++
++LEAF(MEMMOVE_NAME, 3)
++ add.d a4, a1, a2
++ add.d a3, a0, a2
++ beq a1, a0, L(less_1bytes)
++ move t8, a0
++
++ srai.d a6, a2, 4
++ beqz a6, L(less_16bytes)
++ srai.d a6, a2, 6
++ bnez a6, L(more_64bytes)
++ srai.d a6, a2, 5
++ beqz a6, L(less_32bytes)
++
++ ld.d t0, a1, 0
++ ld.d t1, a1, 8
++ ld.d t2, a1, 16
++ ld.d t3, a1, 24
++
++ ld.d t4, a4, -32
++ ld.d t5, a4, -24
++ ld.d t6, a4, -16
++ ld.d t7, a4, -8
++
++ st.d t0, a0, 0
++ st.d t1, a0, 8
++ st.d t2, a0, 16
++ st.d t3, a0, 24
++
++ st.d t4, a3, -32
++ st.d t5, a3, -24
++ st.d t6, a3, -16
++ st.d t7, a3, -8
++
++ jr ra
++
++L(less_32bytes):
++ ld.d t0, a1, 0
++ ld.d t1, a1, 8
++ ld.d t2, a4, -16
++ ld.d t3, a4, -8
++
++ st.d t0, a0, 0
++ st.d t1, a0, 8
++ st.d t2, a3, -16
++ st.d t3, a3, -8
++
++ jr ra
++
++L(less_16bytes):
++ srai.d a6, a2, 3
++ beqz a6, L(less_8bytes)
++
++ ld.d t0, a1, 0
++ ld.d t1, a4, -8
++ st.d t0, a0, 0
++ st.d t1, a3, -8
++
++ jr ra
++
++L(less_8bytes):
++ srai.d a6, a2, 2
++ beqz a6, L(less_4bytes)
++
++ ld.w t0, a1, 0
++ ld.w t1, a4, -4
++ st.w t0, a0, 0
++ st.w t1, a3, -4
++
++ jr ra
++
++L(less_4bytes):
++ srai.d a6, a2, 1
++ beqz a6, L(less_2bytes)
++
++ ld.h t0, a1, 0
++ ld.h t1, a4, -2
++ st.h t0, a0, 0
++ st.h t1, a3, -2
++
++ jr ra
++
++L(less_2bytes):
++ beqz a2, L(less_1bytes)
++
++ ld.b t0, a1, 0
++ st.b t0, a0, 0
++
++ jr ra
++
++L(less_1bytes):
++ jr ra
++
++L(more_64bytes):
++ sub.d a7, a0, a1
++ bltu a7, a2, L(copy_backward)
++
++L(copy_forward):
++ srli.d a0, a0, 3
++ slli.d a0, a0, 3
++ beq a0, t8, L(all_align)
++ addi.d a0, a0, 0x8
++ sub.d a7, t8, a0
++ sub.d a1, a1, a7
++ add.d a2, a7, a2
++
++L(start_unalign_proc):
++ pcaddi t1, 18
++ slli.d a6, a7, 3
++ add.d t1, t1, a6
++ jr t1
++
++ ld.b t0, a1, -7
++ st.b t0, a0, -7
++ ld.b t0, a1, -6
++ st.b t0, a0, -6
++ ld.b t0, a1, -5
++ st.b t0, a0, -5
++ ld.b t0, a1, -4
++ st.b t0, a0, -4
++ ld.b t0, a1, -3
++ st.b t0, a0, -3
++ ld.b t0, a1, -2
++ st.b t0, a0, -2
++ ld.b t0, a1, -1
++ st.b t0, a0, -1
++L(start_over):
++
++ addi.d a2, a2, -0x80
++ blt a2, zero, L(end_unalign_proc)
++
++L(loop_less):
++ LD_64(a1, 0)
++ ST_64(a0, 0)
++ LD_64(a1, 64)
++ ST_64(a0, 64)
++
++ addi.d a0, a0, 0x80
++ addi.d a1, a1, 0x80
++ addi.d a2, a2, -0x80
++ bge a2, zero, L(loop_less)
++
++L(end_unalign_proc):
++ addi.d a2, a2, 0x80
++
++ pcaddi t1, 36
++ andi t2, a2, 0x78
++ add.d a1, a1, t2
++ add.d a0, a0, t2
++ sub.d t1, t1, t2
++ jr t1
++
++ ld.d t0, a1, -120
++ st.d t0, a0, -120
++ ld.d t0, a1, -112
++ st.d t0, a0, -112
++ ld.d t0, a1, -104
++ st.d t0, a0, -104
++ ld.d t0, a1, -96
++ st.d t0, a0, -96
++ ld.d t0, a1, -88
++ st.d t0, a0, -88
++ ld.d t0, a1, -80
++ st.d t0, a0, -80
++ ld.d t0, a1, -72
++ st.d t0, a0, -72
++ ld.d t0, a1, -64
++ st.d t0, a0, -64
++ ld.d t0, a1, -56
++ st.d t0, a0, -56
++ ld.d t0, a1, -48
++ st.d t0, a0, -48
++ ld.d t0, a1, -40
++ st.d t0, a0, -40
++ ld.d t0, a1, -32
++ st.d t0, a0, -32
++ ld.d t0, a1, -24
++ st.d t0, a0, -24
++ ld.d t0, a1, -16
++ st.d t0, a0, -16
++ ld.d t0, a1, -8
++ st.d t0, a0, -8
++
++ andi a2, a2, 0x7
++ pcaddi t1, 18
++ slli.d a2, a2, 3
++ sub.d t1, t1, a2
++ jr t1
++
++ ld.b t0, a4, -7
++ st.b t0, a3, -7
++ ld.b t0, a4, -6
++ st.b t0, a3, -6
++ ld.b t0, a4, -5
++ st.b t0, a3, -5
++ ld.b t0, a4, -4
++ st.b t0, a3, -4
++ ld.b t0, a4, -3
++ st.b t0, a3, -3
++ ld.b t0, a4, -2
++ st.b t0, a3, -2
++ ld.b t0, a4, -1
++ st.b t0, a3, -1
++L(end):
++ move a0, t8
++ jr ra
++
++L(all_align):
++ addi.d a1, a1, 0x8
++ addi.d a0, a0, 0x8
++ ld.d t0, a1, -8
++ st.d t0, a0, -8
++ addi.d a2, a2, -8
++ b L(start_over)
++
++L(all_align_back):
++ addi.d a4, a4, -0x8
++ addi.d a3, a3, -0x8
++ ld.d t0, a4, 0
++ st.d t0, a3, 0
++ addi.d a2, a2, -8
++ b L(start_over_back)
++
++L(copy_backward):
++ move a5, a3
++ srli.d a3, a3, 3
++ slli.d a3, a3, 3
++ beq a3, a5, L(all_align_back)
++ sub.d a7, a3, a5
++ add.d a4, a4, a7
++ add.d a2, a7, a2
++
++ pcaddi t1, 18
++ slli.d a6, a7, 3
++ add.d t1, t1, a6
++ jr t1
++
++ ld.b t0, a4, 6
++ st.b t0, a3, 6
++ ld.b t0, a4, 5
++ st.b t0, a3, 5
++ ld.b t0, a4, 4
++ st.b t0, a3, 4
++ ld.b t0, a4, 3
++ st.b t0, a3, 3
++ ld.b t0, a4, 2
++ st.b t0, a3, 2
++ ld.b t0, a4, 1
++ st.b t0, a3, 1
++ ld.b t0, a4, 0
++ st.b t0, a3, 0
++L(start_over_back):
++ addi.d a2, a2, -0x80
++ blt a2, zero, L(end_unalign_proc_back)
++
++L(loop_less_back):
++ LD_64(a4, -64)
++ ST_64(a3, -64)
++ LD_64(a4, -128)
++ ST_64(a3, -128)
++
++ addi.d a4, a4, -0x80
++ addi.d a3, a3, -0x80
++ addi.d a2, a2, -0x80
++ bge a2, zero, L(loop_less_back)
++
++L(end_unalign_proc_back):
++ addi.d a2, a2, 0x80
++
++ pcaddi t1, 36
++ andi t2, a2, 0x78
++ sub.d a4, a4, t2
++ sub.d a3, a3, t2
++ sub.d t1, t1, t2
++ jr t1
++
++ ld.d t0, a4, 112
++ st.d t0, a3, 112
++ ld.d t0, a4, 104
++ st.d t0, a3, 104
++ ld.d t0, a4, 96
++ st.d t0, a3, 96
++ ld.d t0, a4, 88
++ st.d t0, a3, 88
++ ld.d t0, a4, 80
++ st.d t0, a3, 80
++ ld.d t0, a4, 72
++ st.d t0, a3, 72
++ ld.d t0, a4, 64
++ st.d t0, a3, 64
++ ld.d t0, a4, 56
++ st.d t0, a3, 56
++ ld.d t0, a4, 48
++ st.d t0, a3, 48
++ ld.d t0, a4, 40
++ st.d t0, a3, 40
++ ld.d t0, a4, 32
++ st.d t0, a3, 32
++ ld.d t0, a4, 24
++ st.d t0, a3, 24
++ ld.d t0, a4, 16
++ st.d t0, a3, 16
++ ld.d t0, a4, 8
++ st.d t0, a3, 8
++ ld.d t0, a4, 0
++ st.d t0, a3, 0
++
++ andi a2, a2, 0x7
++ pcaddi t1, 18
++ slli.d a2, a2, 3
++ sub.d t1, t1, a2
++ jr t1
++
++ ld.b t0, a1, 6
++ st.b t0, a0, 6
++ ld.b t0, a1, 5
++ st.b t0, a0, 5
++ ld.b t0, a1, 4
++ st.b t0, a0, 4
++ ld.b t0, a1, 3
++ st.b t0, a0, 3
++ ld.b t0, a1, 2
++ st.b t0, a0, 2
++ ld.b t0, a1, 1
++ st.b t0, a0, 1
++ ld.b t0, a1, 0
++ st.b t0, a0, 0
++
++ move a0, t8
++ jr ra
++END(MEMMOVE_NAME)
++
++libc_hidden_builtin_def (MEMMOVE_NAME)
++#endif
+diff --git a/sysdeps/loongarch/lp64/multiarch/memmove.c b/sysdeps/loongarch/lp64/multiarch/memmove.c
+new file mode 100644
+index 00000000..7e3ca4c4
+--- /dev/null
++++ b/sysdeps/loongarch/lp64/multiarch/memmove.c
+@@ -0,0 +1,38 @@
++/* Multiple versions of memmove.
++ All versions must be listed in ifunc-impl-list.c.
++ Copyright (C) 2023 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <https://www.gnu.org/licenses/>. */
++
++/* Define multiple versions only for the definition in libc. */
++#if IS_IN (libc)
++# define memmove __redirect_memmove
++# include <string.h>
++# undef memmove
++
++# define SYMBOL_NAME memmove
++# include "ifunc-lasx.h"
++
++libc_ifunc_redirected (__redirect_memmove, __libc_memmove,
++ IFUNC_SELECTOR ());
++strong_alias (__libc_memmove, memmove);
++
++# ifdef SHARED
++__hidden_ver1 (__libc_memmove, __GI_memmove, __redirect_memmove)
++ __attribute__ ((visibility ("hidden")));
++# endif
++
++#endif
+--
+2.33.0
+
generated by cgit v1.2.3 (git 2.25.1) at 2025-07-14 01:37:35 +0000