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Wed, 02 Aug 2023 19:22:52 +0800 (CST) Received: from 5.5.5 (unknown [10.2.5.5]) by localhost.localdomain (Coremail) with SMTP id AQAAf8BxB82KPMpkLpZFAA--.42122S3; Wed, 02 Aug 2023 19:22:51 +0800 (CST) From: dengjianbo To: libc-alpha@sourceware.org Cc: adhemerval.zanella@linaro.org, xry111@xry111.site, caiyinyu@loongson.cn, xuchenghua@loongson.cn, huangpei@loongson.cn, dengjianbo Subject: [PATCH V2 2/2] Loongarch: Add ifunc support and add different versions of strlen Date: Wed, 2 Aug 2023 19:22:49 +0800 Message-Id: <20230802112249.2617540-2-dengjianbo@loongson.cn> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20230802112249.2617540-1-dengjianbo@loongson.cn> References: <20230802112249.2617540-1-dengjianbo@loongson.cn> MIME-Version: 1.0 X-CM-TRANSID: AQAAf8BxB82KPMpkLpZFAA--.42122S3 X-CM-SenderInfo: pghqwyxldqu0o6or00hjvr0hdfq/ X-Coremail-Antispam: 1Uk129KBj9fXoW3uF43CFyrCw48Zr45Cry7CFX_yoW8WrWkAo WSkFsrJrs2kr4IkwsrCrsxZ3srWr1xGr42y3y7ZayrJr48try5CFy8CayF9rZxtr95WF4r Xa429wsxJF9IkFn5l-sFpf9Il3svdjkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8wcxFpf 9Il3svdxBIdaVrn0xqx4xG64xvF2IEw4CE5I8CrVC2j2Jv73VFW2AGmfu7bjvjm3AaLaJ3 UjIYCTnIWjp_UUUY17kC6x804xWl14x267AKxVWUJVW8JwAFc2x0x2IEx4CE42xK8VAvwI 8IcIk0rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2ocxC64kIII0Yj41l84x0c7CEw4AK67xG Y2AK021l84ACjcxK6xIIjxv20xvE14v26r1I6r4UM28EF7xvwVC0I7IYx2IY6xkF7I0E14 v26r4j6F4UM28EF7xvwVC2z280aVAFwI0_Gr1j6F4UJwA2z4x0Y4vEx4A2jsIEc7CjxVAF wI0_Gr1j6F4UJwAS0I0E0xvYzxvE52x082IY62kv0487Mc804VCY07AIYIkI8VC2zVCFFI 0UMc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7IYx2IY67AKxVWUXVWUAwAv7VC2z280 aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4UM4x0Y48IcxkI7VAKI48JMxAIw28Icx kI7VAKI48JMxC20s026xCaFVCjc4AY6r1j6r4UMI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2Iq xVCjr7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67AKxVWUAVWUtwCIc40Y0x0EwIxGrwCI42 IY6xIIjxv20xvE14v26r1j6r1xMIIF0xvE2Ix0cI8IcVCY1x0267AKxVWUJVW8JwCI42IY 6xAIw20EY4v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Jr0_Gr1lIxAIcVC2z280aV CY1x0267AKxVWUJVW8JbIYCTnIWIevJa73UjIFyTuYvjxUwmhFDUUUU X-Spam-Status: No, score=-10.9 required=5.0 tests=BAYES_00, GIT_PATCH_0, KAM_DMARC_STATUS, KAM_SHORT, KAM_STOCKGEN, SPF_HELO_NONE, SPF_PASS, TXREP, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: libc-alpha-bounces+patchwork=sourceware.org@sourceware.org Sender: "Libc-alpha" 1. strlen-lasx is implemeted by LASX simd instructions(256bit) 2. strlen-lsx is implemeted by LSX simd instructions(128bit) 3. strlen-align is implemented by LA basic instructions and never use unaligned memory acess --- sysdeps/loongarch/configure | 3 + sysdeps/loongarch/configure.ac | 2 + sysdeps/loongarch/lp64/multiarch/Makefile | 11 ++ .../lp64/multiarch/ifunc-impl-list.c | 41 +++++++ .../loongarch/lp64/multiarch/ifunc-strlen.h | 40 +++++++ .../loongarch/lp64/multiarch/strlen-aligned.S | 100 ++++++++++++++++++ .../loongarch/lp64/multiarch/strlen-lasx.S | 63 +++++++++++ sysdeps/loongarch/lp64/multiarch/strlen-lsx.S | 71 +++++++++++++ sysdeps/loongarch/lp64/multiarch/strlen.c | 37 +++++++ sysdeps/loongarch/sys/regdef.h | 57 ++++++++++ .../unix/sysv/linux/loongarch/cpu-features.h | 2 + 11 files changed, 427 insertions(+) create mode 100644 sysdeps/loongarch/lp64/multiarch/Makefile create mode 100644 sysdeps/loongarch/lp64/multiarch/ifunc-impl-list.c create mode 100644 sysdeps/loongarch/lp64/multiarch/ifunc-strlen.h create mode 100644 sysdeps/loongarch/lp64/multiarch/strlen-aligned.S create mode 100644 sysdeps/loongarch/lp64/multiarch/strlen-lasx.S create mode 100644 sysdeps/loongarch/lp64/multiarch/strlen-lsx.S create mode 100644 sysdeps/loongarch/lp64/multiarch/strlen.c diff --git a/sysdeps/loongarch/configure b/sysdeps/loongarch/configure index 7f1dabbc37..dbd6f4c71b 100644 --- a/sysdeps/loongarch/configure +++ b/sysdeps/loongarch/configure @@ -128,6 +128,9 @@ rm -f conftest* fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_loongarch_vec_asm" >&5 printf "%s\n" "$libc_cv_loongarch_vec_asm" >&6; } +config_vars="$config_vars +loongarch_vec_asm = $libc_cv_loongarch_vec_asm" + if test $libc_cv_loongarch_vec_asm = yes; then printf "%s\n" "#define HAVE_LOONGARCH_VEC_ASM 1" >>confdefs.h diff --git a/sysdeps/loongarch/configure.ac b/sysdeps/loongarch/configure.ac index 39efccfd8f..9fadf7bb9d 100644 --- a/sysdeps/loongarch/configure.ac +++ b/sysdeps/loongarch/configure.ac @@ -74,6 +74,8 @@ else libc_cv_loongarch_vec_asm=no fi rm -f conftest*]) +LIBC_CONFIG_VAR([loongarch_vec_asm], [$libc_cv_loongarch_vec_asm]) + if test $libc_cv_loongarch_vec_asm = yes; then AC_DEFINE(HAVE_LOONGARCH_VEC_ASM) fi diff --git a/sysdeps/loongarch/lp64/multiarch/Makefile b/sysdeps/loongarch/lp64/multiarch/Makefile new file mode 100644 index 0000000000..73b7f61969 --- /dev/null +++ b/sysdeps/loongarch/lp64/multiarch/Makefile @@ -0,0 +1,11 @@ +ifeq ($(subdir),string) +sysdep_routines += strlen-aligned \ + # sysdep_routines + +ifeq ($(loongarch_vec_asm), yes) +sysdep_routines += strlen-lsx \ + strlen-lasx \ + # sysdep_routines +endif + +endif diff --git a/sysdeps/loongarch/lp64/multiarch/ifunc-impl-list.c b/sysdeps/loongarch/lp64/multiarch/ifunc-impl-list.c new file mode 100644 index 0000000000..39c26f8374 --- /dev/null +++ b/sysdeps/loongarch/lp64/multiarch/ifunc-impl-list.c @@ -0,0 +1,41 @@ +/* Enumerate available IFUNC implementations of a function LoongArch64 version. + 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 + . */ + +#include +#include +#include +#include +#include +#include + +size_t +__libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array, + size_t max) +{ + + size_t i = max; + + IFUNC_IMPL (i, name, strlen, +#if HAVE_LOONGARCH_VEC_ASM && !defined __loongarch_soft_float + IFUNC_IMPL_ADD (array, i, strlen, SUPPORT_LASX, __strlen_lasx) + IFUNC_IMPL_ADD (array, i, strlen, SUPPORT_LSX, __strlen_lsx) +#endif + IFUNC_IMPL_ADD (array, i, strlen, 1, __strlen_aligned) + ) + return i; +} diff --git a/sysdeps/loongarch/lp64/multiarch/ifunc-strlen.h b/sysdeps/loongarch/lp64/multiarch/ifunc-strlen.h new file mode 100644 index 0000000000..583887272b --- /dev/null +++ b/sysdeps/loongarch/lp64/multiarch/ifunc-strlen.h @@ -0,0 +1,40 @@ +/* Common definition for strlen ifunc selections. + 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 + . */ + +#include +#include + +#if HAVE_LOONGARCH_VEC_ASM && !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; + +static inline void * +IFUNC_SELECTOR (void) +{ +#if HAVE_LOONGARCH_VEC_ASM && !defined __loongarch_soft_float + if (SUPPORT_LASX) + return OPTIMIZE (lasx); + else if (SUPPORT_LSX) + return OPTIMIZE (lsx); + else +#endif + return OPTIMIZE (aligned); +} diff --git a/sysdeps/loongarch/lp64/multiarch/strlen-aligned.S b/sysdeps/loongarch/lp64/multiarch/strlen-aligned.S new file mode 100644 index 0000000000..e9e1d2fc04 --- /dev/null +++ b/sysdeps/loongarch/lp64/multiarch/strlen-aligned.S @@ -0,0 +1,100 @@ +/* Optimized strlen 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 + . */ + +#include +#include +#include + +#if IS_IN (libc) +# define STRLEN __strlen_aligned +#else +# define STRLEN strlen +#endif + +LEAF(STRLEN, 6) + move a1, a0 + bstrins.d a0, zero, 2, 0 + lu12i.w a2, 0x01010 + li.w t0, -1 + + ld.d t2, a0, 0 + andi t1, a1, 0x7 + ori a2, a2, 0x101 + slli.d t1, t1, 3 + + bstrins.d a2, a2, 63, 32 + sll.d t1, t0, t1 + slli.d t3, a2, 7 + nor a3, zero, t3 + + orn t2, t2, t1 + sub.d t0, t2, a2 + nor t1, t2, a3 + and t0, t0, t1 + + + bnez t0, L(count_pos) + addi.d a0, a0, 8 +L(loop_16_7bit): + ld.d t2, a0, 0 + sub.d t1, t2, a2 + + and t0, t1, t3 + bnez t0, L(more_check) + ld.d t2, a0, 8 + sub.d t1, t2, a2 + + and t0, t1, t3 + addi.d a0, a0, 16 + beqz t0, L(loop_16_7bit) + addi.d a0, a0, -8 + +L(more_check): + nor t0, t2, a3 + and t0, t1, t0 + bnez t0, L(count_pos) + addi.d a0, a0, 8 + + +L(loop_16_8bit): + ld.d t2, a0, 0 + sub.d t1, t2, a2 + nor t0, t2, a3 + and t0, t0, t1 + + bnez t0, L(count_pos) + ld.d t2, a0, 8 + addi.d a0, a0, 16 + sub.d t1, t2, a2 + + nor t0, t2, a3 + and t0, t0, t1 + beqz t0, L(loop_16_8bit) + addi.d a0, a0, -8 + +L(count_pos): + ctz.d t1, t0 + sub.d a0, a0, a1 + srli.d t1, t1, 3 + add.d a0, a0, t1 + + jr ra +END(STRLEN) + +libc_hidden_builtin_def (STRLEN) diff --git a/sysdeps/loongarch/lp64/multiarch/strlen-lasx.S b/sysdeps/loongarch/lp64/multiarch/strlen-lasx.S new file mode 100644 index 0000000000..61edeeb26d --- /dev/null +++ b/sysdeps/loongarch/lp64/multiarch/strlen-lasx.S @@ -0,0 +1,63 @@ +/* Optimized strlen implementation using loongarch LASX SIMD 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 + . */ + +#include +#include +#include + +#if IS_IN (libc) + +# define STRLEN __strlen_lasx + +LEAF(STRLEN, 6) + move a1, a0 + bstrins.d a0, zero, 4, 0 + li.d t1, -1 + xvld xr0, a0, 0 + + xvmsknz.b xr0, xr0 + xvpickve.w xr1, xr0, 4 + vilvl.h vr0, vr1, vr0 + movfr2gr.s t0, fa0 # sign extend + + sra.w t0, t0, a1 + beq t0, t1, L(loop) + cto.w a0, t0 + jr ra + +L(loop): + xvld xr0, a0, 32 + addi.d a0, a0, 32 + xvsetanyeqz.b fcc0, xr0 + bceqz fcc0, L(loop) + + + xvmsknz.b xr0, xr0 + sub.d a0, a0, a1 + xvpickve.w xr1, xr0, 4 + vilvl.h vr0, vr1, vr0 + + movfr2gr.s t0, fa0 + cto.w t0, t0 + add.d a0, a0, t0 + jr ra +END(STRLEN) + +libc_hidden_builtin_def (STRLEN) +#endif diff --git a/sysdeps/loongarch/lp64/multiarch/strlen-lsx.S b/sysdeps/loongarch/lp64/multiarch/strlen-lsx.S new file mode 100644 index 0000000000..34f995004c --- /dev/null +++ b/sysdeps/loongarch/lp64/multiarch/strlen-lsx.S @@ -0,0 +1,71 @@ +/* Optimized strlen implementation using Loongarch LSX SIMD 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 + . */ + +#include +#include +#include + +#if IS_IN (libc) + +# define STRLEN __strlen_lsx + +LEAF(STRLEN, 6) + move a1, a0 + bstrins.d a0, zero, 4, 0 + vld vr0, a0, 0 + vld vr1, a0, 16 + + li.d t1, -1 + vmsknz.b vr0, vr0 + vmsknz.b vr1, vr1 + vilvl.h vr0, vr1, vr0 + + movfr2gr.s t0, fa0 + sra.w t0, t0, a1 + beq t0, t1, L(loop) + cto.w a0, t0 + + jr ra + nop + nop + nop + + +L(loop): + vld vr0, a0, 32 + vld vr1, a0, 48 + addi.d a0, a0, 32 + vmin.bu vr2, vr0, vr1 + + vsetanyeqz.b fcc0, vr2 + bceqz fcc0, L(loop) + vmsknz.b vr0, vr0 + vmsknz.b vr1, vr1 + + vilvl.h vr0, vr1, vr0 + sub.d a0, a0, a1 + movfr2gr.s t0, fa0 + cto.w t0, t0 + + add.d a0, a0, t0 + jr ra +END(STRLEN) + +libc_hidden_builtin_def (STRLEN) +#endif diff --git a/sysdeps/loongarch/lp64/multiarch/strlen.c b/sysdeps/loongarch/lp64/multiarch/strlen.c new file mode 100644 index 0000000000..381c2daa86 --- /dev/null +++ b/sysdeps/loongarch/lp64/multiarch/strlen.c @@ -0,0 +1,37 @@ +/* Multiple versions of strlen. + 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 + . */ + +/* Define multiple versions only for the definition in libc. */ + +#if IS_IN (libc) +# define strlen __redirect_strlen +# include +# undef strlen + +# define SYMBOL_NAME strlen +# include "ifunc-strlen.h" + +libc_ifunc_redirected (__redirect_strlen, strlen, IFUNC_SELECTOR ()); + +# ifdef SHARED +__hidden_ver1 (strlen, __GI_strlen, __redirect_strlen) + __attribute__ ((visibility ("hidden"))) __attribute_copy__ (strlen); +# endif + +#endif diff --git a/sysdeps/loongarch/sys/regdef.h b/sysdeps/loongarch/sys/regdef.h index 5100f36d24..524d2e3277 100644 --- a/sysdeps/loongarch/sys/regdef.h +++ b/sysdeps/loongarch/sys/regdef.h @@ -89,6 +89,14 @@ #define fs5 $f29 #define fs6 $f30 #define fs7 $f31 +#define fcc0 $fcc0 +#define fcc1 $fcc1 +#define fcc2 $fcc2 +#define fcc3 $fcc3 +#define fcc4 $fcc4 +#define fcc5 $fcc5 +#define fcc6 $fcc6 +#define fcc7 $fcc7 #define vr0 $vr0 #define vr1 $vr1 @@ -98,6 +106,30 @@ #define vr5 $vr5 #define vr6 $vr6 #define vr7 $vr7 +#define vr8 $vr8 +#define vr9 $vr9 +#define vr10 $vr10 +#define vr11 $vr11 +#define vr12 $vr12 +#define vr13 $vr13 +#define vr14 $vr14 +#define vr15 $vr15 +#define vr16 $vr16 +#define vr17 $vr17 +#define vr18 $vr18 +#define vr19 $vr19 +#define vr20 $vr20 +#define vr21 $vr21 +#define vr22 $vr22 +#define vr23 $vr23 +#define vr24 $vr24 +#define vr25 $vr25 +#define vr26 $vr26 +#define vr27 $vr27 +#define vr28 $vr28 +#define vr29 $vr29 +#define vr30 $vr30 +#define vr31 $vr31 #define xr0 $xr0 #define xr1 $xr1 @@ -107,5 +139,30 @@ #define xr5 $xr5 #define xr6 $xr6 #define xr7 $xr7 +#define xr7 $xr7 +#define xr8 $xr8 +#define xr9 $xr9 +#define xr10 $xr10 +#define xr11 $xr11 +#define xr12 $xr12 +#define xr13 $xr13 +#define xr14 $xr14 +#define xr15 $xr15 +#define xr16 $xr16 +#define xr17 $xr17 +#define xr18 $xr18 +#define xr19 $xr19 +#define xr20 $xr20 +#define xr21 $xr21 +#define xr22 $xr22 +#define xr23 $xr23 +#define xr24 $xr24 +#define xr25 $xr25 +#define xr26 $xr26 +#define xr27 $xr27 +#define xr28 $xr28 +#define xr29 $xr29 +#define xr30 $xr30 +#define xr31 $xr31 #endif /* _SYS_REGDEF_H */ diff --git a/sysdeps/unix/sysv/linux/loongarch/cpu-features.h b/sysdeps/unix/sysv/linux/loongarch/cpu-features.h index e371e13b15..d1a280a5ee 100644 --- a/sysdeps/unix/sysv/linux/loongarch/cpu-features.h +++ b/sysdeps/unix/sysv/linux/loongarch/cpu-features.h @@ -25,5 +25,7 @@ #define SUPPORT_LSX (GLRO (dl_hwcap) & HWCAP_LOONGARCH_LSX) #define SUPPORT_LASX (GLRO (dl_hwcap) & HWCAP_LOONGARCH_LASX) +#define INIT_ARCH() + #endif /* _CPU_FEATURES_LOONGARCH64_H */