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LoongArch: Add ifunc support for strrchr{aligned, lsx, lasx}
According to glibc strrchr microbenchmark test results, this implementation could reduce the runtime time as following: Name Percent of rutime reduced strrchr-lasx 10%-50% strrchr-lsx 0%-50% strrchr-aligned 5%-50% Generic strrchr is implemented by function strlen + memrchr, the lasx version will compare with generic strrchr implemented by strlen-lasx + memrchr-lasx, the lsx version will compare with generic strrchr implemented by strlen-lsx + memrchr-lsx, the aligned version will compare with generic strrchr implemented by strlen-aligned + memrchr-generic.
This commit is contained in:
dengjianbo
caiyinyu
parent
06251002d4
commit
24279aecf3
7 changed files with 578 additions and 0 deletions
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@ -9,6 +9,9 @@ sysdep_routines += \
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strchr-aligned \
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strchr-lsx \
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strchr-lasx \
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strrchr-aligned \
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strrchr-lsx \
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strrchr-lasx \
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strchrnul-aligned \
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strchrnul-lsx \
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strchrnul-lasx \
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@ -94,6 +94,14 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
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IFUNC_IMPL_ADD (array, i, stpcpy, 1, __stpcpy_aligned)
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)
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IFUNC_IMPL (i, name, strrchr,
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#if !defined __loongarch_soft_float
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IFUNC_IMPL_ADD (array, i, strrchr, SUPPORT_LASX, __strrchr_lasx)
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IFUNC_IMPL_ADD (array, i, strrchr, SUPPORT_LSX, __strrchr_lsx)
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#endif
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IFUNC_IMPL_ADD (array, i, strrchr, 1, __strrchr_aligned)
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)
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IFUNC_IMPL (i, name, memcpy,
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#if !defined __loongarch_soft_float
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IFUNC_IMPL_ADD (array, i, memcpy, SUPPORT_LASX, __memcpy_lasx)
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41
sysdeps/loongarch/lp64/multiarch/ifunc-strrchr.h
Normal file
41
sysdeps/loongarch/lp64/multiarch/ifunc-strrchr.h
Normal file
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@ -0,0 +1,41 @@
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/* Common definition for strrchr ifunc selections.
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All versions must be listed in ifunc-impl-list.c.
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Copyright (C) 2023 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <ldsodefs.h>
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#include <ifunc-init.h>
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#if !defined __loongarch_soft_float
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extern __typeof (REDIRECT_NAME) OPTIMIZE (lasx) attribute_hidden;
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extern __typeof (REDIRECT_NAME) OPTIMIZE (lsx) attribute_hidden;
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#endif
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extern __typeof (REDIRECT_NAME) OPTIMIZE (aligned) attribute_hidden;
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static inline void *
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IFUNC_SELECTOR (void)
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{
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#if !defined __loongarch_soft_float
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if (SUPPORT_LASX)
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return OPTIMIZE (lasx);
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else if (SUPPORT_LSX)
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return OPTIMIZE (lsx);
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else
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#endif
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return OPTIMIZE (aligned);
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}
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170
sysdeps/loongarch/lp64/multiarch/strrchr-aligned.S
Normal file
170
sysdeps/loongarch/lp64/multiarch/strrchr-aligned.S
Normal file
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@ -0,0 +1,170 @@
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/* Optimized strrchr implementation using basic LoongArch instructions.
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Copyright (C) 2023 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
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<https://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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#include <sys/regdef.h>
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#include <sys/asm.h>
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#if IS_IN (libc)
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# define STRRCHR __strrchr_aligned
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#else
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# define STRRCHR strrchr
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#endif
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LEAF(STRRCHR, 6)
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slli.d t0, a0, 3
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bstrins.d a0, zero, 2, 0
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lu12i.w a2, 0x01010
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ld.d t2, a0, 0
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andi a1, a1, 0xff
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ori a2, a2, 0x101
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li.d t3, -1
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bstrins.d a2, a2, 63, 32
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sll.d t5, t3, t0
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slli.d a3, a2, 7
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orn t4, t2, t5
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mul.d a1, a1, a2
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sub.d t0, t4, a2
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andn t1, a3, t4
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and t1, t0, t1
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beqz t1, L(find_tail)
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ctz.d t0, t1
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orn t0, zero, t0
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xor t2, t4, a1
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srl.d t0, t3, t0
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orn t2, t2, t0
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orn t2, t2, t5
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revb.d t2, t2
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sub.d t1, t2, a2
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andn t0, a3, t2
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and t1, t0, t1
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ctz.d t0, t1
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srli.d t0, t0, 3
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addi.d a0, a0, 7
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sub.d a0, a0, t0
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maskeqz a0, a0, t1
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jr ra
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L(find_tail):
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addi.d a4, a0, 8
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addi.d a0, a0, 8
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L(loop_ascii):
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ld.d t2, a0, 0
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sub.d t1, t2, a2
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and t0, t1, a3
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bnez t0, L(more_check)
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ld.d t2, a0, 8
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sub.d t1, t2, a2
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and t0, t1, a3
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addi.d a0, a0, 16
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beqz t0, L(loop_ascii)
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addi.d a0, a0, -8
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L(more_check):
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andn t0, a3, t2
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and t1, t1, t0
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bnez t1, L(tail)
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addi.d a0, a0, 8
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L(loop_nonascii):
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ld.d t2, a0, 0
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sub.d t1, t2, a2
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andn t0, a3, t2
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and t1, t0, t1
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bnez t1, L(tail)
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ld.d t2, a0, 8
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addi.d a0, a0, 16
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sub.d t1, t2, a2
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andn t0, a3, t2
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and t1, t0, t1
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beqz t1, L(loop_nonascii)
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addi.d a0, a0, -8
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L(tail):
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ctz.d t0, t1
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orn t0, zero, t0
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xor t2, t2, a1
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srl.d t0, t3, t0
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orn t2, t2, t0
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revb.d t2, t2
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sub.d t1, t2, a2
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andn t0, a3, t2
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and t1, t0, t1
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bnez t1, L(count_pos)
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L(find_loop):
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beq a0, a4, L(find_end)
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ld.d t2, a0, -8
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addi.d a0, a0, -8
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xor t2, t2, a1
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sub.d t1, t2, a2
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andn t0, a3, t2
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and t1, t0, t1
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beqz t1, L(find_loop)
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revb.d t2, t2
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sub.d t1, t2, a2
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andn t0, a3, t2
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and t1, t0, t1
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L(count_pos):
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ctz.d t0, t1
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addi.d a0, a0, 7
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srli.d t0, t0, 3
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sub.d a0, a0, t0
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jr ra
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nop
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L(find_end):
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xor t2, t4, a1
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orn t2, t2, t5
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revb.d t2, t2
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sub.d t1, t2, a2
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andn t0, a3, t2
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and t1, t0, t1
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ctz.d t0, t1
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srli.d t0, t0, 3
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addi.d a0, a4, -1
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sub.d a0, a0, t0
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maskeqz a0, a0, t1
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jr ra
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END(STRRCHR)
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libc_hidden_builtin_def(STRRCHR)
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176
sysdeps/loongarch/lp64/multiarch/strrchr-lasx.S
Normal file
176
sysdeps/loongarch/lp64/multiarch/strrchr-lasx.S
Normal file
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@ -0,0 +1,176 @@
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/* Optimized strrchr implementation using LoongArch LASX instructions.
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Copyright (C) 2023 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
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<https://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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#include <sys/regdef.h>
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#include <sys/asm.h>
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#if IS_IN (libc) && !defined __loongarch_soft_float
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#define STRRCHR __strrchr_lasx
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LEAF(STRRCHR, 6)
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move a2, a0
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bstrins.d a0, zero, 5, 0
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xvld xr0, a0, 0
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xvld xr1, a0, 32
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li.d t2, -1
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xvreplgr2vr.b xr4, a1
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xvmsknz.b xr2, xr0
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xvmsknz.b xr3, xr1
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xvpickve.w xr5, xr2, 4
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xvpickve.w xr6, xr3, 4
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vilvl.h vr2, vr5, vr2
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vilvl.h vr3, vr6, vr3
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vilvl.w vr2, vr3, vr2
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movfr2gr.d t0, fa2
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sra.d t0, t0, a2
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beq t0, t2, L(find_tail)
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xvseq.b xr2, xr0, xr4
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xvseq.b xr3, xr1, xr4
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xvmsknz.b xr2, xr2
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xvmsknz.b xr3, xr3
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xvpickve.w xr4, xr2, 4
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xvpickve.w xr5, xr3, 4
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vilvl.h vr2, vr4, vr2
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vilvl.h vr3, vr5, vr3
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vilvl.w vr1, vr3, vr2
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slli.d t3, t2, 1
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movfr2gr.d t1, fa1
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cto.d t0, t0
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srl.d t1, t1, a2
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sll.d t3, t3, t0
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addi.d a0, a2, 63
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andn t1, t1, t3
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clz.d t0, t1
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sub.d a0, a0, t0
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maskeqz a0, a0, t1
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jr ra
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.align 5
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L(find_tail):
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addi.d a3, a0, 64
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L(loop):
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xvld xr2, a0, 64
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xvld xr3, a0, 96
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addi.d a0, a0, 64
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xvmin.bu xr5, xr2, xr3
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xvsetanyeqz.b fcc0, xr5
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bceqz fcc0, L(loop)
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xvmsknz.b xr5, xr2
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xvmsknz.b xr6, xr3
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xvpickve.w xr7, xr5, 4
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xvpickve.w xr8, xr6, 4
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vilvl.h vr5, vr7, vr5
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vilvl.h vr6, vr8, vr6
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xvseq.b xr2, xr2, xr4
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xvseq.b xr3, xr3, xr4
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xvmsknz.b xr2, xr2
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xvmsknz.b xr3, xr3
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xvpickve.w xr7, xr2, 4
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xvpickve.w xr8, xr3, 4
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vilvl.h vr2, vr7, vr2
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vilvl.h vr3, vr8, vr3
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vilvl.w vr5, vr6, vr5
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vilvl.w vr2, vr3, vr2
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movfr2gr.d t0, fa5
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movfr2gr.d t1, fa2
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slli.d t3, t2, 1
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cto.d t0, t0
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sll.d t3, t3, t0
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andn t1, t1, t3
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beqz t1, L(find_loop)
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clz.d t0, t1
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addi.d a0, a0, 63
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sub.d a0, a0, t0
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jr ra
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L(find_loop):
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beq a0, a3, L(find_end)
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xvld xr2, a0, -64
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xvld xr3, a0, -32
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addi.d a0, a0, -64
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xvseq.b xr2, xr2, xr4
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xvseq.b xr3, xr3, xr4
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xvmax.bu xr5, xr2, xr3
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xvseteqz.v fcc0, xr5
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bcnez fcc0, L(find_loop)
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xvmsknz.b xr0, xr2
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xvmsknz.b xr1, xr3
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xvpickve.w xr2, xr0, 4
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xvpickve.w xr3, xr1, 4
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vilvl.h vr0, vr2, vr0
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vilvl.h vr1, vr3, vr1
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vilvl.w vr0, vr1, vr0
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movfr2gr.d t0, fa0
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addi.d a0, a0, 63
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clz.d t0, t0
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sub.d a0, a0, t0
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jr ra
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nop
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L(find_end):
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xvseq.b xr2, xr0, xr4
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xvseq.b xr3, xr1, xr4
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xvmsknz.b xr2, xr2
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xvmsknz.b xr3, xr3
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xvpickve.w xr4, xr2, 4
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xvpickve.w xr5, xr3, 4
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vilvl.h vr2, vr4, vr2
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vilvl.h vr3, vr5, vr3
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vilvl.w vr1, vr3, vr2
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movfr2gr.d t1, fa1
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addi.d a0, a2, 63
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srl.d t1, t1, a2
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clz.d t0, t1
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sub.d a0, a0, t0
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maskeqz a0, a0, t1
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jr ra
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END(STRRCHR)
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libc_hidden_builtin_def(STRRCHR)
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#endif
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144
sysdeps/loongarch/lp64/multiarch/strrchr-lsx.S
Normal file
144
sysdeps/loongarch/lp64/multiarch/strrchr-lsx.S
Normal file
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@ -0,0 +1,144 @@
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/* Optimized strrchr 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>
|
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#include <sys/regdef.h>
|
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#include <sys/asm.h>
|
||||
|
||||
#if IS_IN (libc) && !defined __loongarch_soft_float
|
||||
|
||||
#define STRRCHR __strrchr_lsx
|
||||
|
||||
LEAF(STRRCHR, 6)
|
||||
move a2, a0
|
||||
bstrins.d a0, zero, 4, 0
|
||||
vld vr0, a0, 0
|
||||
vld vr1, a0, 16
|
||||
|
||||
li.d t2, -1
|
||||
vreplgr2vr.b vr4, a1
|
||||
vmsknz.b vr2, vr0
|
||||
vmsknz.b vr3, vr1
|
||||
|
||||
vilvl.h vr2, vr3, vr2
|
||||
movfr2gr.s t0, fa2
|
||||
sra.w t0, t0, a2
|
||||
beq t0, t2, L(find_tail)
|
||||
|
||||
vseq.b vr2, vr0, vr4
|
||||
vseq.b vr3, vr1, vr4
|
||||
vmsknz.b vr2, vr2
|
||||
vmsknz.b vr3, vr3
|
||||
|
||||
|
||||
vilvl.h vr1, vr3, vr2
|
||||
slli.d t3, t2, 1
|
||||
movfr2gr.s t1, fa1
|
||||
cto.w t0, t0
|
||||
|
||||
srl.w t1, t1, a2
|
||||
sll.d t3, t3, t0
|
||||
addi.d a0, a2, 31
|
||||
andn t1, t1, t3
|
||||
|
||||
clz.w t0, t1
|
||||
sub.d a0, a0, t0
|
||||
maskeqz a0, a0, t1
|
||||
jr ra
|
||||
|
||||
.align 5
|
||||
L(find_tail):
|
||||
addi.d a3, a0, 32
|
||||
L(loop):
|
||||
vld vr2, a0, 32
|
||||
vld vr3, a0, 48
|
||||
addi.d a0, a0, 32
|
||||
|
||||
vmin.bu vr5, vr2, vr3
|
||||
vsetanyeqz.b fcc0, vr5
|
||||
bceqz fcc0, L(loop)
|
||||
vmsknz.b vr5, vr2
|
||||
|
||||
vmsknz.b vr6, vr3
|
||||
vilvl.h vr5, vr6, vr5
|
||||
vseq.b vr2, vr2, vr4
|
||||
vseq.b vr3, vr3, vr4
|
||||
|
||||
vmsknz.b vr2, vr2
|
||||
vmsknz.b vr3, vr3
|
||||
vilvl.h vr2, vr3, vr2
|
||||
movfr2gr.s t0, fa5
|
||||
|
||||
|
||||
movfr2gr.s t1, fa2
|
||||
slli.d t3, t2, 1
|
||||
cto.w t0, t0
|
||||
sll.d t3, t3, t0
|
||||
|
||||
andn t1, t1, t3
|
||||
beqz t1, L(find_loop)
|
||||
clz.w t0, t1
|
||||
addi.d a0, a0, 31
|
||||
|
||||
sub.d a0, a0, t0
|
||||
jr ra
|
||||
L(find_loop):
|
||||
beq a0, a3, L(find_end)
|
||||
vld vr2, a0, -32
|
||||
|
||||
vld vr3, a0, -16
|
||||
addi.d a0, a0, -32
|
||||
vseq.b vr2, vr2, vr4
|
||||
vseq.b vr3, vr3, vr4
|
||||
|
||||
|
||||
vmax.bu vr5, vr2, vr3
|
||||
vseteqz.v fcc0, vr5
|
||||
bcnez fcc0, L(find_loop)
|
||||
vmsknz.b vr0, vr2
|
||||
|
||||
vmsknz.b vr1, vr3
|
||||
vilvl.h vr0, vr1, vr0
|
||||
movfr2gr.s t0, fa0
|
||||
addi.d a0, a0, 31
|
||||
|
||||
clz.w t0, t0
|
||||
sub.d a0, a0, t0
|
||||
jr ra
|
||||
nop
|
||||
|
||||
L(find_end):
|
||||
vseq.b vr2, vr0, vr4
|
||||
vseq.b vr3, vr1, vr4
|
||||
vmsknz.b vr2, vr2
|
||||
vmsknz.b vr3, vr3
|
||||
|
||||
|
||||
vilvl.h vr1, vr3, vr2
|
||||
movfr2gr.s t1, fa1
|
||||
addi.d a0, a2, 31
|
||||
srl.w t1, t1, a2
|
||||
|
||||
clz.w t0, t1
|
||||
sub.d a0, a0, t0
|
||||
maskeqz a0, a0, t1
|
||||
jr ra
|
||||
END(STRRCHR)
|
||||
|
||||
libc_hidden_builtin_def(STRRCHR)
|
||||
#endif
|
||||
36
sysdeps/loongarch/lp64/multiarch/strrchr.c
Normal file
36
sysdeps/loongarch/lp64/multiarch/strrchr.c
Normal file
|
|
@ -0,0 +1,36 @@
|
|||
/* Multiple versions of strrchr.
|
||||
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 strrchr __redirect_strrchr
|
||||
# include <string.h>
|
||||
# undef strrchr
|
||||
|
||||
# define SYMBOL_NAME strrchr
|
||||
# include "ifunc-strrchr.h"
|
||||
|
||||
libc_ifunc_redirected (__redirect_strrchr, strrchr, IFUNC_SELECTOR ());
|
||||
weak_alias (strrchr, rindex)
|
||||
# ifdef SHARED
|
||||
__hidden_ver1 (strrchr, __GI_strrchr, __redirect_strrchr)
|
||||
__attribute__ ((visibility ("hidden"))) __attribute_copy__ (strrchr);
|
||||
# endif
|
||||
|
||||
#endif
|
||||
Loading…
Add table
Reference in a new issue