You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
243 lines
8.8 KiB
243 lines
8.8 KiB
9 months ago
|
From 63ad43566f7a25d140dc723598aeb441ad657eed Mon Sep 17 00:00:00 2001
|
||
|
|
From: "H.J. Lu" <hjl.tools@gmail.com>
|
||
|
|
Date: Fri, 5 Mar 2021 06:46:08 -0800
|
||
|
|
Subject: [PATCH] x86-64: Add memmove family functions with 256-bit EVEX
|
||
|
|
Content-type: text/plain; charset=UTF-8
|
||
|
|
|
||
|
|
Update ifunc-memmove.h to select the function optimized with 256-bit EVEX
|
||
|
|
instructions using YMM16-YMM31 registers to avoid RTM abort with usable
|
||
|
|
AVX512VL since VZEROUPPER isn't needed at function exit.
|
||
|
|
---
|
||
|
|
sysdeps/x86_64/multiarch/Makefile | 1 +
|
||
|
|
sysdeps/x86_64/multiarch/ifunc-impl-list.c | 36 +++++++++++++++++++
|
||
|
|
sysdeps/x86_64/multiarch/ifunc-memmove.h | 21 +++++++++--
|
||
|
|
.../multiarch/memmove-evex-unaligned-erms.S | 33 +++++++++++++++++
|
||
|
|
.../multiarch/memmove-vec-unaligned-erms.S | 24 ++++++++-----
|
||
|
|
5 files changed, 104 insertions(+), 11 deletions(-)
|
||
|
|
create mode 100644 sysdeps/x86_64/multiarch/memmove-evex-unaligned-erms.S
|
||
|
|
|
||
|
|
diff --git a/sysdeps/x86_64/multiarch/Makefile b/sysdeps/x86_64/multiarch/Makefile
|
||
|
|
index 46783cd1..4563fc56 100644
|
||
|
|
--- a/sysdeps/x86_64/multiarch/Makefile
|
||
|
|
+++ b/sysdeps/x86_64/multiarch/Makefile
|
||
|
|
@@ -41,6 +41,7 @@ sysdep_routines += strncat-c stpncpy-c strncpy-c \
|
||
|
|
memset-avx2-unaligned-erms \
|
||
|
|
memset-avx512-unaligned-erms \
|
||
|
|
memchr-evex \
|
||
|
|
+ memmove-evex-unaligned-erms \
|
||
|
|
memrchr-evex \
|
||
|
|
rawmemchr-evex \
|
||
|
|
stpcpy-evex \
|
||
|
|
diff --git a/sysdeps/x86_64/multiarch/ifunc-impl-list.c b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
|
||
|
|
index 082e4da3..6bd3abfc 100644
|
||
|
|
--- a/sysdeps/x86_64/multiarch/ifunc-impl-list.c
|
||
|
|
+++ b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
|
||
|
|
@@ -80,6 +80,12 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
|
||
|
|
IFUNC_IMPL_ADD (array, i, __memmove_chk,
|
||
|
|
CPU_FEATURE_USABLE (AVX),
|
||
|
|
__memmove_chk_avx_unaligned_erms)
|
||
|
|
+ IFUNC_IMPL_ADD (array, i, __memmove_chk,
|
||
|
|
+ CPU_FEATURE_USABLE (AVX512VL),
|
||
|
|
+ __memmove_chk_evex_unaligned)
|
||
|
|
+ IFUNC_IMPL_ADD (array, i, __memmove_chk,
|
||
|
|
+ CPU_FEATURE_USABLE (AVX512VL),
|
||
|
|
+ __memmove_chk_evex_unaligned_erms)
|
||
|
|
IFUNC_IMPL_ADD (array, i, __memmove_chk,
|
||
|
|
CPU_FEATURE_USABLE (SSSE3),
|
||
|
|
__memmove_chk_ssse3_back)
|
||
|
|
@@ -102,6 +108,12 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
|
||
|
|
IFUNC_IMPL_ADD (array, i, memmove,
|
||
|
|
CPU_FEATURE_USABLE (AVX),
|
||
|
|
__memmove_avx_unaligned_erms)
|
||
|
|
+ IFUNC_IMPL_ADD (array, i, memmove,
|
||
|
|
+ CPU_FEATURE_USABLE (AVX512VL),
|
||
|
|
+ __memmove_evex_unaligned)
|
||
|
|
+ IFUNC_IMPL_ADD (array, i, memmove,
|
||
|
|
+ CPU_FEATURE_USABLE (AVX512VL),
|
||
|
|
+ __memmove_evex_unaligned_erms)
|
||
|
|
IFUNC_IMPL_ADD (array, i, memmove,
|
||
|
|
CPU_FEATURE_USABLE (AVX512F),
|
||
|
|
__memmove_avx512_no_vzeroupper)
|
||
|
|
@@ -565,6 +577,12 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
|
||
|
|
IFUNC_IMPL_ADD (array, i, __memcpy_chk,
|
||
|
|
CPU_FEATURE_USABLE (AVX),
|
||
|
|
__memcpy_chk_avx_unaligned_erms)
|
||
|
|
+ IFUNC_IMPL_ADD (array, i, __memcpy_chk,
|
||
|
|
+ CPU_FEATURE_USABLE (AVX512VL),
|
||
|
|
+ __memcpy_chk_evex_unaligned)
|
||
|
|
+ IFUNC_IMPL_ADD (array, i, __memcpy_chk,
|
||
|
|
+ CPU_FEATURE_USABLE (AVX512VL),
|
||
|
|
+ __memcpy_chk_evex_unaligned_erms)
|
||
|
|
IFUNC_IMPL_ADD (array, i, __memcpy_chk,
|
||
|
|
CPU_FEATURE_USABLE (SSSE3),
|
||
|
|
__memcpy_chk_ssse3_back)
|
||
|
|
@@ -587,6 +605,12 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
|
||
|
|
IFUNC_IMPL_ADD (array, i, memcpy,
|
||
|
|
CPU_FEATURE_USABLE (AVX),
|
||
|
|
__memcpy_avx_unaligned_erms)
|
||
|
|
+ IFUNC_IMPL_ADD (array, i, memcpy,
|
||
|
|
+ CPU_FEATURE_USABLE (AVX512VL),
|
||
|
|
+ __memcpy_evex_unaligned)
|
||
|
|
+ IFUNC_IMPL_ADD (array, i, memcpy,
|
||
|
|
+ CPU_FEATURE_USABLE (AVX512VL),
|
||
|
|
+ __memcpy_evex_unaligned_erms)
|
||
|
|
IFUNC_IMPL_ADD (array, i, memcpy, CPU_FEATURE_USABLE (SSSE3),
|
||
|
|
__memcpy_ssse3_back)
|
||
|
|
IFUNC_IMPL_ADD (array, i, memcpy, CPU_FEATURE_USABLE (SSSE3),
|
||
|
|
@@ -623,6 +647,12 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
|
||
|
|
IFUNC_IMPL_ADD (array, i, __mempcpy_chk,
|
||
|
|
CPU_FEATURE_USABLE (AVX),
|
||
|
|
__mempcpy_chk_avx_unaligned_erms)
|
||
|
|
+ IFUNC_IMPL_ADD (array, i, __mempcpy_chk,
|
||
|
|
+ CPU_FEATURE_USABLE (AVX512VL),
|
||
|
|
+ __mempcpy_chk_evex_unaligned)
|
||
|
|
+ IFUNC_IMPL_ADD (array, i, __mempcpy_chk,
|
||
|
|
+ CPU_FEATURE_USABLE (AVX512VL),
|
||
|
|
+ __mempcpy_chk_evex_unaligned_erms)
|
||
|
|
IFUNC_IMPL_ADD (array, i, __mempcpy_chk,
|
||
|
|
CPU_FEATURE_USABLE (SSSE3),
|
||
|
|
__mempcpy_chk_ssse3_back)
|
||
|
|
@@ -654,6 +684,12 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
|
||
|
|
IFUNC_IMPL_ADD (array, i, mempcpy,
|
||
|
|
CPU_FEATURE_USABLE (AVX),
|
||
|
|
__mempcpy_avx_unaligned_erms)
|
||
|
|
+ IFUNC_IMPL_ADD (array, i, mempcpy,
|
||
|
|
+ CPU_FEATURE_USABLE (AVX512VL),
|
||
|
|
+ __mempcpy_evex_unaligned)
|
||
|
|
+ IFUNC_IMPL_ADD (array, i, mempcpy,
|
||
|
|
+ CPU_FEATURE_USABLE (AVX512VL),
|
||
|
|
+ __mempcpy_evex_unaligned_erms)
|
||
|
|
IFUNC_IMPL_ADD (array, i, mempcpy, CPU_FEATURE_USABLE (SSSE3),
|
||
|
|
__mempcpy_ssse3_back)
|
||
|
|
IFUNC_IMPL_ADD (array, i, mempcpy, CPU_FEATURE_USABLE (SSSE3),
|
||
|
|
diff --git a/sysdeps/x86_64/multiarch/ifunc-memmove.h b/sysdeps/x86_64/multiarch/ifunc-memmove.h
|
||
|
|
index 5e5f0299..6f8bce5f 100644
|
||
|
|
--- a/sysdeps/x86_64/multiarch/ifunc-memmove.h
|
||
|
|
+++ b/sysdeps/x86_64/multiarch/ifunc-memmove.h
|
||
|
|
@@ -29,6 +29,10 @@ extern __typeof (REDIRECT_NAME) OPTIMIZE (ssse3_back) attribute_hidden;
|
||
|
|
extern __typeof (REDIRECT_NAME) OPTIMIZE (avx_unaligned) attribute_hidden;
|
||
|
|
extern __typeof (REDIRECT_NAME) OPTIMIZE (avx_unaligned_erms)
|
||
|
|
attribute_hidden;
|
||
|
|
+extern __typeof (REDIRECT_NAME) OPTIMIZE (evex_unaligned)
|
||
|
|
+ attribute_hidden;
|
||
|
|
+extern __typeof (REDIRECT_NAME) OPTIMIZE (evex_unaligned_erms)
|
||
|
|
+ attribute_hidden;
|
||
|
|
extern __typeof (REDIRECT_NAME) OPTIMIZE (avx512_unaligned)
|
||
|
|
attribute_hidden;
|
||
|
|
extern __typeof (REDIRECT_NAME) OPTIMIZE (avx512_unaligned_erms)
|
||
|
|
@@ -59,10 +63,21 @@ IFUNC_SELECTOR (void)
|
||
|
|
|
||
|
|
if (CPU_FEATURES_ARCH_P (cpu_features, AVX_Fast_Unaligned_Load))
|
||
|
|
{
|
||
|
|
- if (CPU_FEATURE_USABLE_P (cpu_features, ERMS))
|
||
|
|
- return OPTIMIZE (avx_unaligned_erms);
|
||
|
|
+ if (CPU_FEATURE_USABLE_P (cpu_features, AVX512VL))
|
||
|
|
+ {
|
||
|
|
+ if (CPU_FEATURE_USABLE_P (cpu_features, ERMS))
|
||
|
|
+ return OPTIMIZE (evex_unaligned_erms);
|
||
|
|
+
|
||
|
|
+ return OPTIMIZE (evex_unaligned);
|
||
|
|
+ }
|
||
|
|
+
|
||
|
|
+ if (!CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_VZEROUPPER))
|
||
|
|
+ {
|
||
|
|
+ if (CPU_FEATURE_USABLE_P (cpu_features, ERMS))
|
||
|
|
+ return OPTIMIZE (avx_unaligned_erms);
|
||
|
|
|
||
|
|
- return OPTIMIZE (avx_unaligned);
|
||
|
|
+ return OPTIMIZE (avx_unaligned);
|
||
|
|
+ }
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!CPU_FEATURE_USABLE_P (cpu_features, SSSE3)
|
||
|
|
diff --git a/sysdeps/x86_64/multiarch/memmove-evex-unaligned-erms.S b/sysdeps/x86_64/multiarch/memmove-evex-unaligned-erms.S
|
||
|
|
new file mode 100644
|
||
|
|
index 00000000..0cbce8f9
|
||
|
|
--- /dev/null
|
||
|
|
+++ b/sysdeps/x86_64/multiarch/memmove-evex-unaligned-erms.S
|
||
|
|
@@ -0,0 +1,33 @@
|
||
|
|
+#if IS_IN (libc)
|
||
|
|
+# define VEC_SIZE 32
|
||
|
|
+# define XMM0 xmm16
|
||
|
|
+# define XMM1 xmm17
|
||
|
|
+# define YMM0 ymm16
|
||
|
|
+# define YMM1 ymm17
|
||
|
|
+# define VEC0 ymm16
|
||
|
|
+# define VEC1 ymm17
|
||
|
|
+# define VEC2 ymm18
|
||
|
|
+# define VEC3 ymm19
|
||
|
|
+# define VEC4 ymm20
|
||
|
|
+# define VEC5 ymm21
|
||
|
|
+# define VEC6 ymm22
|
||
|
|
+# define VEC7 ymm23
|
||
|
|
+# define VEC8 ymm24
|
||
|
|
+# define VEC9 ymm25
|
||
|
|
+# define VEC10 ymm26
|
||
|
|
+# define VEC11 ymm27
|
||
|
|
+# define VEC12 ymm28
|
||
|
|
+# define VEC13 ymm29
|
||
|
|
+# define VEC14 ymm30
|
||
|
|
+# define VEC15 ymm31
|
||
|
|
+# define VEC(i) VEC##i
|
||
|
|
+# define VMOVNT vmovntdq
|
||
|
|
+# define VMOVU vmovdqu64
|
||
|
|
+# define VMOVA vmovdqa64
|
||
|
|
+# define VZEROUPPER
|
||
|
|
+
|
||
|
|
+# define SECTION(p) p##.evex
|
||
|
|
+# define MEMMOVE_SYMBOL(p,s) p##_evex_##s
|
||
|
|
+
|
||
|
|
+# include "memmove-vec-unaligned-erms.S"
|
||
|
|
+#endif
|
||
|
|
diff --git a/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S b/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S
|
||
|
|
index 274aa1c7..08e21692 100644
|
||
|
|
--- a/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S
|
||
|
|
+++ b/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S
|
||
|
|
@@ -48,6 +48,14 @@
|
||
|
|
# define MEMMOVE_CHK_SYMBOL(p,s) MEMMOVE_SYMBOL(p, s)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
+#ifndef XMM0
|
||
|
|
+# define XMM0 xmm0
|
||
|
|
+#endif
|
||
|
|
+
|
||
|
|
+#ifndef YMM0
|
||
|
|
+# define YMM0 ymm0
|
||
|
|
+#endif
|
||
|
|
+
|
||
|
|
#ifndef VZEROUPPER
|
||
|
|
# if VEC_SIZE > 16
|
||
|
|
# define VZEROUPPER vzeroupper
|
||
|
|
@@ -277,20 +285,20 @@ L(less_vec):
|
||
|
|
#if VEC_SIZE > 32
|
||
|
|
L(between_32_63):
|
||
|
|
/* From 32 to 63. No branch when size == 32. */
|
||
|
|
- vmovdqu (%rsi), %ymm0
|
||
|
|
- vmovdqu -32(%rsi,%rdx), %ymm1
|
||
|
|
- vmovdqu %ymm0, (%rdi)
|
||
|
|
- vmovdqu %ymm1, -32(%rdi,%rdx)
|
||
|
|
+ VMOVU (%rsi), %YMM0
|
||
|
|
+ VMOVU -32(%rsi,%rdx), %YMM1
|
||
|
|
+ VMOVU %YMM0, (%rdi)
|
||
|
|
+ VMOVU %YMM1, -32(%rdi,%rdx)
|
||
|
|
VZEROUPPER
|
||
|
|
ret
|
||
|
|
#endif
|
||
|
|
#if VEC_SIZE > 16
|
||
|
|
/* From 16 to 31. No branch when size == 16. */
|
||
|
|
L(between_16_31):
|
||
|
|
- vmovdqu (%rsi), %xmm0
|
||
|
|
- vmovdqu -16(%rsi,%rdx), %xmm1
|
||
|
|
- vmovdqu %xmm0, (%rdi)
|
||
|
|
- vmovdqu %xmm1, -16(%rdi,%rdx)
|
||
|
|
+ VMOVU (%rsi), %XMM0
|
||
|
|
+ VMOVU -16(%rsi,%rdx), %XMM1
|
||
|
|
+ VMOVU %XMM0, (%rdi)
|
||
|
|
+ VMOVU %XMM1, -16(%rdi,%rdx)
|
||
|
|
ret
|
||
|
|
#endif
|
||
|
|
L(between_8_15):
|
||
|
|
--
|
||
|
|
GitLab
|
||
|
|
|