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4dc83cac78
Qualcomm's new core (oryon-1) has a different performance characteristic than other cores. For memcpy, it is faster to use the GPRs to do the copy for large sizes (2x faster). For even larger sizes, it is better to use the nontemporal load/store instructions so we don't pollute the L1/L2 caches. For smaller sizes, the characteristic are very similar to other cores. I used the thunderx memcpy as a starting point and expanded from there. Changes since v1: * v2: Fix ordering in Makefile. * v3: Fix comment grammar about the ldnp/stnp instructions. Signed-off-by: Andrew Pinski <quic_apinski@quicinc.com> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
75 lines
3 KiB
C
75 lines
3 KiB
C
/* Enumerate available IFUNC implementations of a function. AARCH64 version.
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Copyright (C) 2017-2024 Free Software Foundation, Inc.
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Copyright The GNU Toolchain Authors.
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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 <assert.h>
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#include <string.h>
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#include <wchar.h>
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#include <ldsodefs.h>
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#include <ifunc-impl-list.h>
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#include <init-arch.h>
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#include <stdio.h>
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size_t
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__libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
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size_t max)
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{
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size_t i = max;
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INIT_ARCH ();
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/* Support sysdeps/aarch64/multiarch/memcpy.c, memmove.c and memset.c. */
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IFUNC_IMPL (i, name, memcpy,
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IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_thunderx)
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IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_oryon1)
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IFUNC_IMPL_ADD (array, i, memcpy, !bti, __memcpy_thunderx2)
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#if HAVE_AARCH64_SVE_ASM
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IFUNC_IMPL_ADD (array, i, memcpy, sve && !bti, __memcpy_a64fx)
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IFUNC_IMPL_ADD (array, i, memcpy, sve, __memcpy_sve)
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#endif
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IFUNC_IMPL_ADD (array, i, memcpy, mops, __memcpy_mops)
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IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_generic))
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IFUNC_IMPL (i, name, memmove,
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IFUNC_IMPL_ADD (array, i, memmove, 1, __memmove_thunderx)
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IFUNC_IMPL_ADD (array, i, memmove, 1, __memmove_oryon1)
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IFUNC_IMPL_ADD (array, i, memmove, !bti, __memmove_thunderx2)
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#if HAVE_AARCH64_SVE_ASM
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IFUNC_IMPL_ADD (array, i, memmove, sve && !bti, __memmove_a64fx)
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IFUNC_IMPL_ADD (array, i, memmove, sve, __memmove_sve)
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#endif
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IFUNC_IMPL_ADD (array, i, memmove, mops, __memmove_mops)
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IFUNC_IMPL_ADD (array, i, memmove, 1, __memmove_generic))
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IFUNC_IMPL (i, name, memset,
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IFUNC_IMPL_ADD (array, i, memset, (zva_size == 64), __memset_zva64)
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IFUNC_IMPL_ADD (array, i, memset, 1, __memset_emag)
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IFUNC_IMPL_ADD (array, i, memset, 1, __memset_kunpeng)
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#if HAVE_AARCH64_SVE_ASM
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IFUNC_IMPL_ADD (array, i, memset, sve && !bti && zva_size == 256, __memset_a64fx)
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#endif
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IFUNC_IMPL_ADD (array, i, memset, mops, __memset_mops)
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IFUNC_IMPL_ADD (array, i, memset, 1, __memset_generic))
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IFUNC_IMPL (i, name, memchr,
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IFUNC_IMPL_ADD (array, i, memchr, !mte, __memchr_nosimd)
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IFUNC_IMPL_ADD (array, i, memchr, 1, __memchr_generic))
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IFUNC_IMPL (i, name, strlen,
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IFUNC_IMPL_ADD (array, i, strlen, !mte, __strlen_asimd)
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IFUNC_IMPL_ADD (array, i, strlen, 1, __strlen_generic))
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return 0;
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}
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