automatic import of glibcopeneuler20.03

1 files changed, 583 insertions, 0 deletions

diff --git a/LoongArch-Add-ifunc-support-for-strncmp-aligned-lsx.patch b/LoongArch-Add-ifunc-support-for-strncmp-aligned-lsx.patch
new file mode 100644
index 0000000..0297fc3
--- /dev/null
+++ b/LoongArch-Add-ifunc-support-for-strncmp-aligned-lsx.patch
@@ -0,0 +1,583 @@
+From 6f03da2d7ef218c0f78375cf706dada59c3fee63 Mon Sep 17 00:00:00 2001
+From: dengjianbo <dengjianbo@loongson.cn>
+Date: Thu, 24 Aug 2023 16:50:19 +0800
+Subject: [PATCH 10/29] LoongArch: Add ifunc support for strncmp{aligned, lsx}
+
+Based on the glibc microbenchmark, only a few short inputs with this
+strncmp-aligned and strncmp-lsx implementation experience performance
+degradation, overall, strncmp-aligned could reduce the runtime 0%-10%
+for aligned comparision, 10%-25% for unaligend comparision, strncmp-lsx
+could reduce the runtime about 0%-60%.
+
+Signed-off-by: Peng Fan <fanpeng@loongson.cn>
+Signed-off-by: ticat_fp <fanpeng@loongson.cn>
+---
+ sysdeps/loongarch/lp64/multiarch/Makefile     |   2 +
+ .../lp64/multiarch/ifunc-impl-list.c          |   7 +
+ .../loongarch/lp64/multiarch/ifunc-strncmp.h  |  38 +++
+ .../lp64/multiarch/strncmp-aligned.S          | 218 ++++++++++++++++++
+ .../loongarch/lp64/multiarch/strncmp-lsx.S    | 208 +++++++++++++++++
+ sysdeps/loongarch/lp64/multiarch/strncmp.c    |  35 +++
+ 6 files changed, 508 insertions(+)
+ create mode 100644 sysdeps/loongarch/lp64/multiarch/ifunc-strncmp.h
+ create mode 100644 sysdeps/loongarch/lp64/multiarch/strncmp-aligned.S
+ create mode 100644 sysdeps/loongarch/lp64/multiarch/strncmp-lsx.S
+ create mode 100644 sysdeps/loongarch/lp64/multiarch/strncmp.c
+
+diff --git a/sysdeps/loongarch/lp64/multiarch/Makefile b/sysdeps/loongarch/lp64/multiarch/Makefile
+index d5a500de..5d7ae7ae 100644
+--- a/sysdeps/loongarch/lp64/multiarch/Makefile
++++ b/sysdeps/loongarch/lp64/multiarch/Makefile
+@@ -14,6 +14,8 @@ sysdep_routines += \
+   strchrnul-lasx \
+   strcmp-aligned \
+   strcmp-lsx \
++  strncmp-aligned \
++  strncmp-lsx \
+   memcpy-aligned \
+   memcpy-unaligned \
+   memmove-unaligned \
+diff --git a/sysdeps/loongarch/lp64/multiarch/ifunc-impl-list.c b/sysdeps/loongarch/lp64/multiarch/ifunc-impl-list.c
+index 9183b7da..c8ba87bd 100644
+--- a/sysdeps/loongarch/lp64/multiarch/ifunc-impl-list.c
++++ b/sysdeps/loongarch/lp64/multiarch/ifunc-impl-list.c
+@@ -69,6 +69,13 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
+ 	      IFUNC_IMPL_ADD (array, i, strcmp, 1, __strcmp_aligned)
+ 	      )
+ 
++  IFUNC_IMPL (i, name, strncmp,
++#if !defined __loongarch_soft_float
++	      IFUNC_IMPL_ADD (array, i, strncmp, SUPPORT_LSX, __strncmp_lsx)
++#endif
++	      IFUNC_IMPL_ADD (array, i, strncmp, 1, __strncmp_aligned)
++	      )
++
+   IFUNC_IMPL (i, name, memcpy,
+ #if !defined __loongarch_soft_float
+               IFUNC_IMPL_ADD (array, i, memcpy, SUPPORT_LASX, __memcpy_lasx)
+diff --git a/sysdeps/loongarch/lp64/multiarch/ifunc-strncmp.h b/sysdeps/loongarch/lp64/multiarch/ifunc-strncmp.h
+new file mode 100644
+index 00000000..1a7dc36b
+--- /dev/null
++++ b/sysdeps/loongarch/lp64/multiarch/ifunc-strncmp.h
+@@ -0,0 +1,38 @@
++/* Common definition for strncmp ifunc selection.
++   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 (lsx) attribute_hidden;
++#endif
++
++extern __typeof (REDIRECT_NAME) OPTIMIZE (aligned) attribute_hidden;
++
++static inline void *
++IFUNC_SELECTOR (void)
++{
++#if !defined __loongarch_soft_float
++  if (SUPPORT_LSX)
++    return OPTIMIZE (lsx);
++  else
++#endif
++    return OPTIMIZE (aligned);
++}
+diff --git a/sysdeps/loongarch/lp64/multiarch/strncmp-aligned.S b/sysdeps/loongarch/lp64/multiarch/strncmp-aligned.S
+new file mode 100644
+index 00000000..e2687fa7
+--- /dev/null
++++ b/sysdeps/loongarch/lp64/multiarch/strncmp-aligned.S
+@@ -0,0 +1,218 @@
++/* Optimized strncmp 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 STRNCMP __strncmp_aligned
++#else
++# define STRNCMP strncmp
++#endif
++
++LEAF(STRNCMP, 6)
++    beqz        a2, L(ret0)
++    lu12i.w     a5, 0x01010
++    andi        a3, a0, 0x7
++    ori         a5, a5, 0x101
++
++    andi        a4, a1, 0x7
++    bstrins.d   a5, a5, 63, 32
++    li.d        t7, -1
++    li.d        t8, 8
++
++    addi.d      a2, a2, -1
++    slli.d      a6, a5, 7
++    bne         a3, a4, L(unaligned)
++    bstrins.d   a0, zero, 2, 0
++
++    bstrins.d   a1, zero, 2, 0
++    ld.d        t0, a0, 0
++    ld.d        t1, a1, 0
++    slli.d      t2, a3, 3
++
++
++    sub.d       t5, t8, a3
++    srl.d       t3, t7, t2
++    srl.d       t0, t0, t2
++    srl.d       t1, t1, t2
++
++    orn         t0, t0, t3
++    orn         t1, t1, t3
++    sub.d       t2, t0, a5
++    andn        t3, a6, t0
++
++    and         t2, t2, t3
++    bne         t0, t1, L(al_end)
++    sltu        t4, a2, t5
++    sub.d       a2, a2, t5
++
++L(al_loop):
++    or          t4, t2, t4
++    bnez        t4, L(ret0)
++    ldx.d       t0, a0, t8
++    ldx.d       t1, a1, t8
++
++
++    addi.d      t8, t8, 8
++    sltui       t4, a2, 8
++    addi.d      a2, a2, -8
++    sub.d       t2, t0, a5
++
++    andn        t3, a6, t0
++    and         t2, t2, t3
++    beq         t0, t1, L(al_loop)
++    addi.d      a2, a2, 8
++
++L(al_end):
++    xor         t3, t0, t1
++    or          t2, t2, t3
++    ctz.d       t2, t2
++    srli.d      t4, t2, 3
++
++    bstrins.d   t2, zero, 2, 0
++    srl.d       t0, t0, t2
++    srl.d       t1, t1, t2
++    andi        t0, t0, 0xff
++
++
++    andi        t1, t1, 0xff
++    sltu        t2, a2, t4
++    sub.d       a0, t0, t1
++    masknez     a0, a0, t2
++
++    jr          ra
++L(ret0):
++    move        a0, zero
++    jr          ra
++    nop
++
++L(unaligned):
++    slt         a7, a4, a3
++    xor         t0, a0, a1
++    maskeqz     t0, t0, a7
++    xor         a0, a0, t0
++
++    xor         a1, a1, t0
++    andi        a3, a0, 0x7
++    andi        a4, a1, 0x7
++    bstrins.d   a0, zero, 2, 0
++
++
++    bstrins.d   a1, zero, 2, 0
++    ld.d        t4, a0, 0
++    ld.d        t1, a1, 0
++    slli.d      t2, a3, 3
++
++    slli.d      t3, a4, 3
++    srl.d       t5, t7, t3
++    srl.d       t0, t4, t2
++    srl.d       t1, t1, t3
++
++    orn         t0, t0, t5
++    orn         t1, t1, t5
++    bne         t0, t1, L(not_equal)
++    sub.d       t6, t8, a4
++
++    sub.d       a4, t2, t3
++    sll.d       t2, t7, t2
++    sub.d       t5, t8, a3
++    orn         t4, t4, t2
++
++
++    sub.d       t2, t4, a5
++    andn        t3, a6, t4
++    sltu        t7, a2, t5
++    and         t2, t2, t3
++
++    sub.d       a3, zero, a4
++    or          t2, t2, t7
++    bnez        t2, L(un_end)
++    sub.d       t7, t5, t6
++
++    sub.d       a2, a2, t5
++    sub.d       t6, t8, t7
++L(un_loop):
++    srl.d       t5, t4, a4
++    ldx.d       t4, a0, t8
++
++    ldx.d       t1, a1, t8
++    addi.d      t8, t8, 8
++    sll.d       t0, t4, a3
++    or          t0, t0, t5
++
++
++    bne         t0, t1, L(loop_not_equal)
++    sub.d       t2, t4, a5
++    andn        t3, a6, t4
++    sltui       t5, a2, 8
++
++    and         t2, t2, t3
++    addi.d      a2, a2, -8
++    or          t3, t2, t5
++    beqz        t3, L(un_loop)
++
++    addi.d      a2, a2, 8
++L(un_end):
++    sub.d       t2, t0, a5
++    andn        t3, a6, t0
++    sltu        t5, a2, t6
++
++    and         t2, t2, t3
++    or          t2, t2, t5
++    bnez        t2, L(ret0)
++    ldx.d       t1, a1, t8
++
++
++    srl.d       t0, t4, a4
++    sub.d       a2, a2, t6
++L(not_equal):
++    sub.d       t2, t0, a5
++    andn        t3, a6, t0
++
++    xor         t4, t0, t1
++    and         t2, t2, t3
++    or          t2, t2, t4
++    ctz.d       t2, t2
++
++    bstrins.d   t2, zero, 2, 0
++    srli.d      t4, t2, 3
++    srl.d       t0, t0, t2
++    srl.d       t1, t1, t2
++
++    andi        t0, t0, 0xff
++    andi        t1, t1, 0xff
++    sub.d       t2, t0, t1
++    sub.d       t3, t1, t0
++
++
++    masknez     t0, t2, a7
++    maskeqz     t1, t3, a7
++    sltu        t2, a2, t4
++    or          a0, t0, t1
++
++    masknez     a0, a0, t2
++    jr          ra
++L(loop_not_equal):
++    add.d       a2, a2, t7
++    b           L(not_equal)
++END(STRNCMP)
++
++libc_hidden_builtin_def (STRNCMP)
+diff --git a/sysdeps/loongarch/lp64/multiarch/strncmp-lsx.S b/sysdeps/loongarch/lp64/multiarch/strncmp-lsx.S
+new file mode 100644
+index 00000000..0b4eee2a
+--- /dev/null
++++ b/sysdeps/loongarch/lp64/multiarch/strncmp-lsx.S
+@@ -0,0 +1,208 @@
++/* Optimized strncmp 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 STRNCMP __strncmp_lsx
++
++LEAF(STRNCMP, 6)
++    beqz            a2, L(ret0)
++    pcalau12i       t0, %pc_hi20(L(INDEX))
++    andi            a3, a0, 0xf
++    vld             vr2, t0, %pc_lo12(L(INDEX))
++
++    andi            a4, a1, 0xf
++    li.d            t2, 16
++    bne             a3, a4, L(unaligned)
++    xor             t0, a0, a3
++
++    xor             t1, a1, a4
++    vld             vr0, t0, 0
++    vld             vr1, t1, 0
++    vreplgr2vr.b    vr3, a3
++
++
++    sub.d           t2, t2, a3
++    vadd.b          vr3, vr3, vr2
++    vshuf.b         vr0, vr3, vr0, vr3
++    vshuf.b         vr1, vr3, vr1, vr3
++
++    vseq.b          vr3, vr0, vr1
++    vmin.bu         vr3, vr0, vr3
++    bgeu            t2, a2, L(al_early_end)
++    vsetanyeqz.b    fcc0, vr3
++
++    bcnez           fcc0, L(al_end)
++    add.d           a3, a0, a2
++    addi.d          a4, a3, -1
++    bstrins.d       a4, zero, 3, 0
++
++    sub.d           a2, a3, a4
++L(al_loop):
++    vld             vr0, t0, 16
++    vld             vr1, t1, 16
++    addi.d          t0, t0, 16
++
++
++    addi.d          t1, t1, 16
++    vseq.b          vr3, vr0, vr1
++    vmin.bu         vr3, vr0, vr3
++    beq             t0, a4, L(al_early_end)
++
++    vsetanyeqz.b    fcc0, vr3
++    bceqz           fcc0, L(al_loop)
++L(al_end):
++    vseqi.b         vr3, vr3, 0
++    vfrstpi.b       vr3, vr3, 0
++
++    vshuf.b         vr0, vr0, vr0, vr3
++    vshuf.b         vr1, vr1, vr1, vr3
++    vpickve2gr.bu   t0, vr0, 0
++    vpickve2gr.bu   t1, vr1, 0
++
++    sub.d           a0, t0, t1
++    jr              ra
++L(al_early_end):
++    vreplgr2vr.b    vr4, a2
++    vslt.b          vr4, vr2, vr4
++
++
++    vorn.v          vr3, vr3, vr4
++    b               L(al_end)
++L(unaligned):
++    slt             a5, a3, a4
++    xor             t0, a0, a1
++
++    maskeqz         t0, t0, a5
++    xor             a0, a0, t0
++    xor             a1, a1, t0
++    andi            a3, a0, 0xf
++
++    andi            a4, a1, 0xf
++    xor             t0, a0, a3
++    xor             t1, a1, a4
++    vld             vr0, t0, 0
++
++    vld             vr3, t1, 0
++    sub.d           t2, t2, a3
++    vreplgr2vr.b    vr4, a3
++    vreplgr2vr.b    vr5, a4
++
++
++    vaddi.bu        vr6, vr2, 16
++    vsub.b          vr7, vr4, vr5
++    vsub.b          vr6, vr6, vr7
++    vadd.b          vr4, vr2, vr4
++
++    vshuf.b         vr1, vr3, vr3, vr6
++    vshuf.b         vr0, vr7, vr0, vr4
++    vshuf.b         vr1, vr7, vr1, vr4
++    vseq.b          vr4, vr0, vr1
++
++    vmin.bu         vr4, vr0, vr4
++    bgeu            t2, a2, L(un_early_end)
++    vsetanyeqz.b    fcc0, vr4
++    bcnez           fcc0, L(un_end)
++
++    add.d           a6, a0, a2
++    vslt.b          vr5, vr2, vr5
++    addi.d          a7, a6, -1
++    vor.v           vr3, vr3, vr5
++
++
++    bstrins.d       a7, zero, 3, 0
++    sub.d           a2, a6, a7
++L(un_loop):
++    vld             vr0, t0, 16
++    addi.d          t0, t0, 16
++
++    vsetanyeqz.b    fcc0, vr3
++    bcnez           fcc0, L(has_zero)
++    beq             t0, a7, L(end_with_len)
++    vor.v           vr1, vr3, vr3
++
++    vld             vr3, t1, 16
++    addi.d          t1, t1, 16
++    vshuf.b         vr1, vr3, vr1, vr6
++    vseq.b          vr4, vr0, vr1
++
++    vmin.bu         vr4, vr0, vr4
++    vsetanyeqz.b    fcc0, vr4
++    bceqz           fcc0, L(un_loop)
++L(un_end):
++    vseqi.b         vr4, vr4, 0
++
++
++    vfrstpi.b       vr4, vr4, 0
++    vshuf.b         vr0, vr0, vr0, vr4
++    vshuf.b         vr1, vr1, vr1, vr4
++    vpickve2gr.bu   t0, vr0, 0
++
++    vpickve2gr.bu   t1, vr1, 0
++    sub.d           t2, t0, t1
++    sub.d           t3, t1, t0
++    masknez         t0, t2, a5
++
++    maskeqz         t1, t3, a5
++    or              a0, t0, t1
++    jr              ra
++L(has_zero):
++    vshuf.b         vr1, vr3, vr3, vr6
++
++    vseq.b          vr4, vr0, vr1
++    vmin.bu         vr4, vr0, vr4
++    bne             t0, a7, L(un_end)
++L(un_early_end):
++    vreplgr2vr.b    vr5, a2
++
++    vslt.b          vr5, vr2, vr5
++    vorn.v          vr4, vr4, vr5
++    b               L(un_end)
++L(end_with_len):
++    sub.d           a6, a3, a4
++
++    bgeu            a6, a2, 1f
++    vld             vr4, t1, 16
++1:
++    vshuf.b         vr1, vr4, vr3, vr6
++    vseq.b          vr4, vr0, vr1
++
++    vmin.bu         vr4, vr0, vr4
++    vreplgr2vr.b    vr5, a2
++    vslt.b          vr5, vr2, vr5
++    vorn.v          vr4, vr4, vr5
++
++    b               L(un_end)
++L(ret0):
++    move            a0, zero
++    jr              ra
++END(STRNCMP)
++
++    .section         .rodata.cst16,"M",@progbits,16
++    .align           4
++L(INDEX):
++    .dword           0x0706050403020100
++    .dword           0x0f0e0d0c0b0a0908
++
++libc_hidden_builtin_def (STRNCMP)
++#endif
+diff --git a/sysdeps/loongarch/lp64/multiarch/strncmp.c b/sysdeps/loongarch/lp64/multiarch/strncmp.c
+new file mode 100644
+index 00000000..af6d0bc4
+--- /dev/null
++++ b/sysdeps/loongarch/lp64/multiarch/strncmp.c
+@@ -0,0 +1,35 @@
++/* Multiple versions of strncmp.
++   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
++   <http://www.gnu.org/licenses/>.  */
++
++/* Define multiple versions only for the definition in libc.  */
++#if IS_IN (libc)
++# define strncmp __redirect_strncmp
++# include <string.h>
++# undef strncmp
++
++# define SYMBOL_NAME strncmp
++# include "ifunc-strncmp.h"
++
++libc_ifunc_redirected (__redirect_strncmp, strncmp, IFUNC_SELECTOR ());
++
++# ifdef SHARED
++__hidden_ver1 (strncmp, __GI_strncmp, __redirect_strncmp)
++  __attribute__ ((visibility ("hidden"))) __attribute_copy__ (strncmp);
++# endif
++#endif
+-- 
+2.33.0
+