@@ -36,42 +36,10 @@
# define CHAR_SIZE 1
# endif
-# define XMM0 xmm16
# define PAGE_SIZE 4096
# define CHAR_PER_VEC (VEC_SIZE / CHAR_SIZE)
-# if VEC_SIZE == 64
-# define KMOV kmovq
-# define KORTEST kortestq
-# define RAX rax
-# define RCX rcx
-# define RDX rdx
-# define SHR shrq
-# define TEXTSUFFIX evex512
-# define VMM0 zmm16
-# define VMM1 zmm17
-# define VMM2 zmm18
-# define VMM3 zmm19
-# define VMM4 zmm20
-# define VMOVA vmovdqa64
-# elif VEC_SIZE == 32
-/* Currently Unused. */
-# define KMOV kmovd
-# define KORTEST kortestd
-# define RAX eax
-# define RCX ecx
-# define RDX edx
-# define SHR shrl
-# define TEXTSUFFIX evex256
-# define VMM0 ymm16
-# define VMM1 ymm17
-# define VMM2 ymm18
-# define VMM3 ymm19
-# define VMM4 ymm20
-# define VMOVA vmovdqa32
-# endif
-
- .section .text.TEXTSUFFIX, "ax", @progbits
+ .section SECTION(.text),"ax",@progbits
/* Aligning entry point to 64 byte, provides better performance for
one vector length string. */
ENTRY_P2ALIGN (STRLEN, 6)
@@ -86,18 +54,18 @@ ENTRY_P2ALIGN (STRLEN, 6)
# endif
movl %edi, %eax
- vpxorq %XMM0, %XMM0, %XMM0
+ vpxorq %VEC_xmm(0), %VEC_xmm(0), %VEC_xmm(0)
andl $(PAGE_SIZE - 1), %eax
cmpl $(PAGE_SIZE - VEC_SIZE), %eax
ja L(page_cross)
/* Compare [w]char for null, mask bit will be set for match. */
- VPCMP $0, (%rdi), %VMM0, %k0
- KMOV %k0, %RAX
- test %RAX, %RAX
+ VPCMP $0, (%rdi), %VEC(0), %k0
+ kmovV %k0, %VRAX
+ test %VRAX, %VRAX
jz L(align_more)
- bsf %RAX, %RAX
+ bsf %VRAX, %VRAX
# ifdef USE_AS_STRNLEN
cmpq %rsi, %rax
cmovnb %rsi, %rax
@@ -120,7 +88,7 @@ L(align_more):
movq %rax, %rdx
subq %rdi, %rdx
# ifdef USE_AS_WCSLEN
- SHR $2, %RDX
+ shr $2, %VRDX
# endif
/* At this point rdx contains [w]chars already compared. */
subq %rsi, %rdx
@@ -131,9 +99,9 @@ L(align_more):
# endif
/* Loop unroll 4 times for 4 vector loop. */
- VPCMP $0, (%rax), %VMM0, %k0
- KMOV %k0, %RCX
- test %RCX, %RCX
+ VPCMP $0, (%rax), %VEC(0), %k0
+ kmovV %k0, %VRCX
+ test %VRCX, %VRCX
jnz L(ret_vec_x1)
# ifdef USE_AS_STRNLEN
@@ -141,9 +109,9 @@ L(align_more):
jbe L(ret_max)
# endif
- VPCMP $0, VEC_SIZE(%rax), %VMM0, %k0
- KMOV %k0, %RCX
- test %RCX, %RCX
+ VPCMP $0, VEC_SIZE(%rax), %VEC(0), %k0
+ kmovV %k0, %VRCX
+ test %VRCX, %VRCX
jnz L(ret_vec_x2)
# ifdef USE_AS_STRNLEN
@@ -151,9 +119,9 @@ L(align_more):
jbe L(ret_max)
# endif
- VPCMP $0, (VEC_SIZE * 2)(%rax), %VMM0, %k0
- KMOV %k0, %RCX
- test %RCX, %RCX
+ VPCMP $0, (VEC_SIZE * 2)(%rax), %VEC(0), %k0
+ kmovV %k0, %VRCX
+ test %VRCX, %VRCX
jnz L(ret_vec_x3)
# ifdef USE_AS_STRNLEN
@@ -161,9 +129,9 @@ L(align_more):
jbe L(ret_max)
# endif
- VPCMP $0, (VEC_SIZE * 3)(%rax), %VMM0, %k0
- KMOV %k0, %RCX
- test %RCX, %RCX
+ VPCMP $0, (VEC_SIZE * 3)(%rax), %VEC(0), %k0
+ kmovV %k0, %VRCX
+ test %VRCX, %VRCX
jnz L(ret_vec_x4)
# ifdef USE_AS_STRNLEN
@@ -179,7 +147,7 @@ L(align_more):
# ifdef USE_AS_STRNLEN
subq %rax, %rcx
# ifdef USE_AS_WCSLEN
- SHR $2, %RCX
+ shr $2, %VRCX
# endif
/* rcx contains number of [w]char will be recompared due to
alignment fixes. rdx must be incremented by rcx to offset
@@ -199,42 +167,42 @@ L(loop_entry):
# endif
/* VPMINU and VPCMP combination provide better performance as
compared to alternative combinations. */
- VMOVA (VEC_SIZE * 4)(%rax), %VMM1
- VPMINU (VEC_SIZE * 5)(%rax), %VMM1, %VMM2
- VMOVA (VEC_SIZE * 6)(%rax), %VMM3
- VPMINU (VEC_SIZE * 7)(%rax), %VMM3, %VMM4
+ VMOVA (VEC_SIZE * 4)(%rax), %VEC(1)
+ VPMINU (VEC_SIZE * 5)(%rax), %VEC(1), %VEC(2)
+ VMOVA (VEC_SIZE * 6)(%rax), %VEC(3)
+ VPMINU (VEC_SIZE * 7)(%rax), %VEC(3), %VEC(4)
- VPTESTN %VMM2, %VMM2, %k0
- VPTESTN %VMM4, %VMM4, %k1
+ VPTESTN %VEC(2), %VEC(2), %k0
+ VPTESTN %VEC(4), %VEC(4), %k1
subq $-(VEC_SIZE * 4), %rax
- KORTEST %k0, %k1
+ kortestV %k0, %k1
jz L(loop)
- VPTESTN %VMM1, %VMM1, %k2
- KMOV %k2, %RCX
- test %RCX, %RCX
+ VPTESTN %VEC(1), %VEC(1), %k2
+ kmovV %k2, %VRCX
+ test %VRCX, %VRCX
jnz L(ret_vec_x1)
- KMOV %k0, %RCX
+ kmovV %k0, %VRCX
/* At this point, if k0 is non zero, null char must be in the
second vector. */
- test %RCX, %RCX
+ test %VRCX, %VRCX
jnz L(ret_vec_x2)
- VPTESTN %VMM3, %VMM3, %k3
- KMOV %k3, %RCX
- test %RCX, %RCX
+ VPTESTN %VEC(3), %VEC(3), %k3
+ kmovV %k3, %VRCX
+ test %VRCX, %VRCX
jnz L(ret_vec_x3)
/* At this point null [w]char must be in the fourth vector so no
need to check. */
- KMOV %k1, %RCX
+ kmovV %k1, %VRCX
/* Fourth, third, second vector terminating are pretty much
same, implemented this way to avoid branching and reuse code
from pre loop exit condition. */
L(ret_vec_x4):
- bsf %RCX, %RCX
+ bsf %VRCX, %VRCX
subq %rdi, %rax
# ifdef USE_AS_WCSLEN
subq $-(VEC_SIZE * 3), %rax
@@ -250,7 +218,7 @@ L(ret_vec_x4):
ret
L(ret_vec_x3):
- bsf %RCX, %RCX
+ bsf %VRCX, %VRCX
subq %rdi, %rax
# ifdef USE_AS_WCSLEN
subq $-(VEC_SIZE * 2), %rax
@@ -268,7 +236,7 @@ L(ret_vec_x3):
L(ret_vec_x2):
subq $-VEC_SIZE, %rax
L(ret_vec_x1):
- bsf %RCX, %RCX
+ bsf %VRCX, %VRCX
subq %rdi, %rax
# ifdef USE_AS_WCSLEN
shrq $2, %rax
@@ -289,13 +257,13 @@ L(page_cross):
/* ecx contains number of w[char] to be skipped as a result
of address alignment. */
xorq %rdi, %rax
- VPCMP $0, (PAGE_SIZE - VEC_SIZE)(%rax), %VMM0, %k0
- KMOV %k0, %RAX
+ VPCMP $0, (PAGE_SIZE - VEC_SIZE)(%rax), %VEC(0), %k0
+ kmovV %k0, %VRAX
/* Ignore number of character for alignment adjustment. */
- SHR %cl, %RAX
+ shr %cl, %VRAX
jz L(align_more)
- bsf %RAX, %RAX
+ bsf %VRAX, %VRAX
# ifdef USE_AS_STRNLEN
cmpq %rsi, %rax
cmovnb %rsi, %rax
@@ -2,6 +2,6 @@
# define STRLEN __strlen_evex512
#endif
-#define VEC_SIZE 64
-
+#include "evex512-vecs.h"
+#include "reg-macros.h"
#include "strlen-evex-base.S"
To avoid duplicate the VMM / GPR / mask insn macros in all incoming evex512 files use the macros defined in 'reg-macros.h' and '{vec}-macros.h' This commit does not change libc.so Tested build on x86-64 --- sysdeps/x86_64/multiarch/strlen-evex-base.S | 118 +++++++------------- sysdeps/x86_64/multiarch/strlen-evex512.S | 4 +- 2 files changed, 45 insertions(+), 77 deletions(-)