Add support for SSSE3 and SSE4.2 versions of strcasecmp on x86-64.
This commit is contained in:
Ulrich Drepper
parent
66f6765a47
commit
73507d3ae0
10
ChangeLog
10
ChangeLog
@ -1,3 +1,13 @@
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2010-07-31 Ulrich Drepper <drepper@redhat.com>
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* sysdeps/x86_64/multiarch/Makefile [subdir=string] (sysdep_routines):
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Add strcasecmp_l-ssse3.
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* sysdeps/x86_64/multiarch/strcmp.S: Add support to compile for
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strcasecmp.
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* sysdeps/x86_64/strcmp.S: Allow more flexible compiling of strcasecmp.
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* sysdeps/x86_64/multiarch/strcasecmp_l.S: New file.
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* sysdeps/x86_64/multiarch/strcasecmp_l-ssse3.S: New file.
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2010-07-30 Ulrich Drepper <drepper@redhat.com>
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* sysdeps/x86_64/multiarch/strcmp.S: Pretty printing.
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@ -7,7 +7,7 @@ ifeq ($(subdir),string)
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sysdep_routines += stpncpy-c strncpy-c strcmp-ssse3 strncmp-ssse3 \
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strend-sse4 memcmp-sse4 memcpy-ssse3 mempcpy-ssse3 \
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memmove-ssse3 memcpy-ssse3-back mempcpy-ssse3-back \
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memmove-ssse3-back strcasestr-nonascii
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memmove-ssse3-back strcasestr-nonascii strcasecmp_l-ssse3
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ifeq (yes,$(config-cflags-sse4))
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sysdep_routines += strcspn-c strpbrk-c strspn-c strstr-c strcasestr-c
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CFLAGS-strcspn-c.c += -msse4
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5
sysdeps/x86_64/multiarch/strcasecmp_l-ssse3.S
Normal file
5
sysdeps/x86_64/multiarch/strcasecmp_l-ssse3.S
Normal file
@ -0,0 +1,5 @@
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#define USE_SSSE3 1
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#define USE_AS_STRCASECMP_L
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#define STRCMP __strcasecmp_l_ssse3
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#define __strcasecmp __strcasecmp_ssse3
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#include "../strcmp.S"
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6
sysdeps/x86_64/multiarch/strcasecmp_l.S
Normal file
6
sysdeps/x86_64/multiarch/strcasecmp_l.S
Normal file
@ -0,0 +1,6 @@
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#define STRCMP __strcasecmp_l
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#define USE_AS_STRCASECMP_L
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#include "strcmp.S"
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weak_alias (__strcasecmp_l, strcasecmp_l)
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libc_hidden_def (strcasecmp_l)
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@ -37,6 +37,15 @@
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# define STRCMP_SSSE3 __strncmp_ssse3
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# define STRCMP_SSE2 __strncmp_sse2
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# define __GI_STRCMP __GI_strncmp
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#elif defined USE_AS_STRCASECMP_L
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# include "locale-defines.h"
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# define UPDATE_STRNCMP_COUNTER
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# define STRCMP_SSE42 __strcasecmp_l_sse42
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# define STRCMP_SSSE3 __strcasecmp_l_ssse3
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# define STRCMP_SSE2 __strcasecmp_l_sse2
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# define __GI_STRCMP __GI___strcasecmp_l
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#else
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# define UPDATE_STRNCMP_COUNTER
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# ifndef STRCMP
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@ -73,6 +82,25 @@ ENTRY(STRCMP)
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2: ret
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END(STRCMP)
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# ifdef USE_AS_STRCASECMP_L
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ENTRY(__strcasecmp)
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.type __strcasecmp, @gnu_indirect_function
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cmpl $0, __cpu_features+KIND_OFFSET(%rip)
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jne 1f
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call __init_cpu_features
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1:
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leaq __strcasecmp_sse42(%rip), %rax
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testl $bit_SSE4_2, __cpu_features+CPUID_OFFSET+index_SSE4_2(%rip)
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jnz 2f
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leaq __strcasecmp_ssse3(%rip), %rax
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testl $bit_SSSE3, __cpu_features+CPUID_OFFSET+index_SSSE3(%rip)
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jnz 2f
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leaq __strcasecmp_sse2(%rip), %rax
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2: ret
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END(__strcasecmp)
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weak_alias (__strcasecmp, strcasecmp)
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# endif
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/* We use 0x1a:
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_SIDD_SBYTE_OPS
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| _SIDD_CMP_EQUAL_EACH
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@ -103,6 +131,16 @@ END(STRCMP)
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.section .text.sse4.2,"ax",@progbits
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.align 16
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.type STRCMP_SSE42, @function
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#ifdef USE_AS_STRCASECMP_L
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/* 5-byte NOP. */
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.byte 0x0f,0x1f,0x44,0x00,0x00
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ENTRY (__strcasecmp_sse42)
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movq __libc_tsd_LOCALE@gottpoff(%rip),%rax
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movq %fs:(%rax),%rdx
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END (__strcasecmp_sse42)
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/* FALLTHROUGH to strcasecmp_l. */
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#endif
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STRCMP_SSE42:
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cfi_startproc
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CALL_MCOUNT
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@ -110,6 +148,18 @@ STRCMP_SSE42:
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/*
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* This implementation uses SSE to compare up to 16 bytes at a time.
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*/
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#ifdef USE_AS_STRCASECMP_L
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/* We have to fall back on the C implementation for locales
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with encodings not matching ASCII for single bytes. */
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# if LOCALE_T___LOCALES != 0 || LC_CTYPE != 0
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movq LOCALE_T___LOCALES+LC_CTYPE*8(%rdx), %rax
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# else
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movq (%rdx), %rax
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# endif
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testl $0, LOCALE_DATA_VALUES+_NL_CTYPE_NONASCII_CASE*SIZEOF_VALUES(%rax)
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jne __strcasecmp_l_nonascii
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#endif
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#ifdef USE_AS_STRNCMP
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test %rdx, %rdx
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je LABEL(strcmp_exitz_sse4_2)
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@ -122,12 +172,52 @@ STRCMP_SSE42:
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/* Use 64bit AND here to avoid long NOP padding. */
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and $0x3f, %rcx /* rsi alignment in cache line */
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and $0x3f, %rax /* rdi alignment in cache line */
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#ifdef USE_AS_STRCASECMP_L
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.section .rodata.cst16,"aM",@progbits,16
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.align 16
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.Lbelowupper_sse4:
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.quad 0x4040404040404040
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.quad 0x4040404040404040
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.Ltopupper_sse4:
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.quad 0x5b5b5b5b5b5b5b5b
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.quad 0x5b5b5b5b5b5b5b5b
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.Ltouppermask_sse4:
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.quad 0x2020202020202020
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.quad 0x2020202020202020
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.previous
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movdqa .Lbelowupper_sse4(%rip), %xmm4
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# define UCLOW_reg %xmm4
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movdqa .Ltopupper_sse4(%rip), %xmm5
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# define UCHIGH_reg %xmm5
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movdqa .Ltouppermask_sse4(%rip), %xmm6
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# define LCQWORD_reg %xmm6
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#endif
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cmp $0x30, %ecx
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ja LABEL(crosscache_sse4_2)/* rsi: 16-byte load will cross cache line */
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cmp $0x30, %eax
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ja LABEL(crosscache_sse4_2)/* rdi: 16-byte load will cross cache line */
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movdqu (%rdi), %xmm1
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movdqu (%rsi), %xmm2
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# ifdef USE_AS_STRCASECMP_L
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# define TOLOWER(reg1, reg2) \
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movdqa reg1, %xmm7; \
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movdqa UCHIGH_reg, %xmm8; \
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movdqa reg2, %xmm9; \
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movdqa UCHIGH_reg, %xmm10; \
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pcmpgtb UCLOW_reg, %xmm7; \
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pcmpgtb reg1, %xmm8; \
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pcmpgtb UCLOW_reg, %xmm9; \
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pcmpgtb reg2, %xmm10; \
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pand %xmm8, %xmm7; \
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pand %xmm10, %xmm9; \
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pand LCQWORD_reg, %xmm7; \
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pand LCQWORD_reg, %xmm9; \
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por %xmm7, reg1; \
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por %xmm9, reg2
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TOLOWER (%xmm1, %xmm2)
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# else
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# define TOLOWER(reg1, reg2)
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# endif
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pxor %xmm0, %xmm0 /* clear %xmm0 for null char checks */
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pcmpeqb %xmm1, %xmm0 /* Any null chars? */
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pcmpeqb %xmm2, %xmm1 /* compare first 16 bytes for equality */
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@ -180,7 +270,13 @@ LABEL(ashr_0_sse4_2):
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movdqa (%rsi), %xmm1
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pxor %xmm0, %xmm0 /* clear %xmm0 for null char check */
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pcmpeqb %xmm1, %xmm0 /* Any null chars? */
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#ifndef USE_AS_STRCASECMP_L
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pcmpeqb (%rdi), %xmm1 /* compare 16 bytes for equality */
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#else
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movdqa (%rdi), %xmm2
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TOLOWER (%xmm1, %xmm2)
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pcmpeqb %xmm2, %xmm1 /* compare 16 bytes for equality */
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#endif
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psubb %xmm0, %xmm1 /* packed sub of comparison results*/
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pmovmskb %xmm1, %r9d
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shr %cl, %edx /* adjust 0xffff for offset */
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@ -204,7 +300,13 @@ LABEL(ashr_0_sse4_2):
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.p2align 4
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LABEL(ashr_0_use_sse4_2):
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movdqa (%rdi,%rdx), %xmm0
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#ifndef USE_AS_STRCASECMP_L
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pcmpistri $0x1a,(%rsi,%rdx), %xmm0
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#else
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movdqa (%rsi,%rdx), %xmm1
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TOLOWER (%xmm0, %xmm1)
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pcmpistri $0x1a, %xmm1, %xmm0
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#endif
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lea 16(%rdx), %rdx
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jbe LABEL(ashr_0_use_sse4_2_exit)
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#ifdef USE_AS_STRNCMP
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@ -213,7 +315,13 @@ LABEL(ashr_0_use_sse4_2):
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#endif
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movdqa (%rdi,%rdx), %xmm0
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#ifndef USE_AS_STRCASECMP_L
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pcmpistri $0x1a,(%rsi,%rdx), %xmm0
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#else
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movdqa (%rsi,%rdx), %xmm1
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TOLOWER (%xmm0, %xmm1)
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pcmpistri $0x1a, %xmm1, %xmm0
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#endif
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lea 16(%rdx), %rdx
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jbe LABEL(ashr_0_use_sse4_2_exit)
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#ifdef USE_AS_STRNCMP
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@ -233,12 +341,16 @@ LABEL(ashr_0_use_sse4_2_exit):
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lea -16(%rdx, %rcx), %rcx
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movzbl (%rdi, %rcx), %eax
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movzbl (%rsi, %rcx), %edx
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# ifdef USE_AS_STRCASECMP_L
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leaq _nl_C_LC_CTYPE_tolower+128*4(%rip), %rcx
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movl (%rcx,%rax,4), %eax
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movl (%rcx,%rdx,4), %edx
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# endif
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sub %edx, %eax
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ret
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/*
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* The following cases will be handled by ashr_1
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* rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
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@ -251,6 +363,7 @@ LABEL(ashr_1_sse4_2):
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movdqa (%rsi), %xmm1
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pcmpeqb %xmm1, %xmm0 /* Any null chars? */
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pslldq $15, %xmm2 /* shift first string to align with second */
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TOLOWER (%xmm1, %xmm2)
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pcmpeqb %xmm1, %xmm2 /* compare 16 bytes for equality */
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psubb %xmm0, %xmm2 /* packed sub of comparison results*/
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pmovmskb %xmm2, %r9d
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@ -281,7 +394,13 @@ LABEL(loop_ashr_1_use_sse4_2):
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movdqa (%rdi, %rdx), %xmm0
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palignr $1, -16(%rdi, %rdx), %xmm0
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#ifndef USE_AS_STRCASECMP_L
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pcmpistri $0x1a,(%rsi,%rdx), %xmm0
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#else
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movdqa (%rsi,%rdx), %xmm1
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TOLOWER (%xmm0, %xmm1)
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pcmpistri $0x1a, %xmm1, %xmm0
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#endif
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jbe LABEL(use_sse4_2_exit)
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#ifdef USE_AS_STRNCMP
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sub $16, %r11
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@ -294,7 +413,13 @@ LABEL(loop_ashr_1_use_sse4_2):
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movdqa (%rdi, %rdx), %xmm0
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palignr $1, -16(%rdi, %rdx), %xmm0
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#ifndef USE_AS_STRCASECMP_L
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pcmpistri $0x1a,(%rsi,%rdx), %xmm0
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#else
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movdqa (%rsi,%rdx), %xmm1
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TOLOWER (%xmm0, %xmm1)
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pcmpistri $0x1a, %xmm1, %xmm0
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#endif
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jbe LABEL(use_sse4_2_exit)
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#ifdef USE_AS_STRNCMP
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sub $16, %r11
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@ -330,6 +455,7 @@ LABEL(ashr_2_sse4_2):
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movdqa (%rsi), %xmm1
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pcmpeqb %xmm1, %xmm0
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pslldq $14, %xmm2
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TOLOWER (%xmm1, %xmm2)
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pcmpeqb %xmm1, %xmm2
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psubb %xmm0, %xmm2
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pmovmskb %xmm2, %r9d
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@ -360,7 +486,13 @@ LABEL(loop_ashr_2_use_sse4_2):
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movdqa (%rdi, %rdx), %xmm0
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palignr $2, -16(%rdi, %rdx), %xmm0
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#ifndef USE_AS_STRCASECMP_L
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pcmpistri $0x1a,(%rsi,%rdx), %xmm0
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#else
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movdqa (%rsi,%rdx), %xmm1
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TOLOWER (%xmm0, %xmm1)
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pcmpistri $0x1a, %xmm1, %xmm0
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#endif
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jbe LABEL(use_sse4_2_exit)
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#ifdef USE_AS_STRNCMP
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sub $16, %r11
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@ -373,7 +505,13 @@ LABEL(loop_ashr_2_use_sse4_2):
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movdqa (%rdi, %rdx), %xmm0
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palignr $2, -16(%rdi, %rdx), %xmm0
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#ifndef USE_AS_STRCASECMP_L
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pcmpistri $0x1a,(%rsi,%rdx), %xmm0
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#else
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movdqa (%rsi,%rdx), %xmm1
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TOLOWER (%xmm0, %xmm1)
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pcmpistri $0x1a, %xmm1, %xmm0
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#endif
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jbe LABEL(use_sse4_2_exit)
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#ifdef USE_AS_STRNCMP
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sub $16, %r11
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@ -409,6 +547,7 @@ LABEL(ashr_3_sse4_2):
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movdqa (%rsi), %xmm1
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pcmpeqb %xmm1, %xmm0
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pslldq $13, %xmm2
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TOLOWER (%xmm1, %xmm2)
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pcmpeqb %xmm1, %xmm2
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psubb %xmm0, %xmm2
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pmovmskb %xmm2, %r9d
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@ -439,7 +578,13 @@ LABEL(loop_ashr_3_use_sse4_2):
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movdqa (%rdi, %rdx), %xmm0
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palignr $3, -16(%rdi, %rdx), %xmm0
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#ifndef USE_AS_STRCASECMP_L
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pcmpistri $0x1a,(%rsi,%rdx), %xmm0
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#else
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movdqa (%rsi,%rdx), %xmm1
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TOLOWER (%xmm0, %xmm1)
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pcmpistri $0x1a, %xmm1, %xmm0
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#endif
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jbe LABEL(use_sse4_2_exit)
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#ifdef USE_AS_STRNCMP
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sub $16, %r11
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@ -452,7 +597,13 @@ LABEL(loop_ashr_3_use_sse4_2):
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movdqa (%rdi, %rdx), %xmm0
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palignr $3, -16(%rdi, %rdx), %xmm0
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#ifndef USE_AS_STRCASECMP_L
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pcmpistri $0x1a,(%rsi,%rdx), %xmm0
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#else
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movdqa (%rsi,%rdx), %xmm1
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TOLOWER (%xmm0, %xmm1)
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pcmpistri $0x1a, %xmm1, %xmm0
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#endif
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jbe LABEL(use_sse4_2_exit)
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#ifdef USE_AS_STRNCMP
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sub $16, %r11
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@ -488,6 +639,7 @@ LABEL(ashr_4_sse4_2):
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movdqa (%rsi), %xmm1
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pcmpeqb %xmm1, %xmm0
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pslldq $12, %xmm2
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TOLOWER (%xmm1, %xmm2)
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pcmpeqb %xmm1, %xmm2
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psubb %xmm0, %xmm2
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pmovmskb %xmm2, %r9d
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@ -519,7 +671,13 @@ LABEL(loop_ashr_4_use_sse4_2):
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movdqa (%rdi, %rdx), %xmm0
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palignr $4, -16(%rdi, %rdx), %xmm0
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#ifndef USE_AS_STRCASECMP_L
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pcmpistri $0x1a,(%rsi,%rdx), %xmm0
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#else
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movdqa (%rsi,%rdx), %xmm1
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TOLOWER (%xmm0, %xmm1)
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pcmpistri $0x1a, %xmm1, %xmm0
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#endif
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jbe LABEL(use_sse4_2_exit)
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#ifdef USE_AS_STRNCMP
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sub $16, %r11
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@ -532,7 +690,13 @@ LABEL(loop_ashr_4_use_sse4_2):
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movdqa (%rdi, %rdx), %xmm0
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palignr $4, -16(%rdi, %rdx), %xmm0
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#ifndef USE_AS_STRCASECMP_L
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pcmpistri $0x1a,(%rsi,%rdx), %xmm0
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#else
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movdqa (%rsi,%rdx), %xmm1
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TOLOWER (%xmm0, %xmm1)
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pcmpistri $0x1a, %xmm1, %xmm0
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#endif
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jbe LABEL(use_sse4_2_exit)
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#ifdef USE_AS_STRNCMP
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sub $16, %r11
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@ -568,6 +732,7 @@ LABEL(ashr_5_sse4_2):
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movdqa (%rsi), %xmm1
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pcmpeqb %xmm1, %xmm0
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pslldq $11, %xmm2
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TOLOWER (%xmm1, %xmm2)
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pcmpeqb %xmm1, %xmm2
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psubb %xmm0, %xmm2
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pmovmskb %xmm2, %r9d
|
||||
@ -599,7 +764,13 @@ LABEL(loop_ashr_5_use_sse4_2):
|
||||
|
||||
movdqa (%rdi, %rdx), %xmm0
|
||||
palignr $5, -16(%rdi, %rdx), %xmm0
|
||||
#ifndef USE_AS_STRCASECMP_L
|
||||
pcmpistri $0x1a,(%rsi,%rdx), %xmm0
|
||||
#else
|
||||
movdqa (%rsi,%rdx), %xmm1
|
||||
TOLOWER (%xmm0, %xmm1)
|
||||
pcmpistri $0x1a, %xmm1, %xmm0
|
||||
#endif
|
||||
jbe LABEL(use_sse4_2_exit)
|
||||
#ifdef USE_AS_STRNCMP
|
||||
sub $16, %r11
|
||||
@ -613,7 +784,13 @@ LABEL(loop_ashr_5_use_sse4_2):
|
||||
movdqa (%rdi, %rdx), %xmm0
|
||||
|
||||
palignr $5, -16(%rdi, %rdx), %xmm0
|
||||
#ifndef USE_AS_STRCASECMP_L
|
||||
pcmpistri $0x1a,(%rsi,%rdx), %xmm0
|
||||
#else
|
||||
movdqa (%rsi,%rdx), %xmm1
|
||||
TOLOWER (%xmm0, %xmm1)
|
||||
pcmpistri $0x1a, %xmm1, %xmm0
|
||||
#endif
|
||||
jbe LABEL(use_sse4_2_exit)
|
||||
#ifdef USE_AS_STRNCMP
|
||||
sub $16, %r11
|
||||
@ -649,6 +826,7 @@ LABEL(ashr_6_sse4_2):
|
||||
movdqa (%rsi), %xmm1
|
||||
pcmpeqb %xmm1, %xmm0
|
||||
pslldq $10, %xmm2
|
||||
TOLOWER (%xmm1, %xmm2)
|
||||
pcmpeqb %xmm1, %xmm2
|
||||
psubb %xmm0, %xmm2
|
||||
pmovmskb %xmm2, %r9d
|
||||
@ -680,7 +858,13 @@ LABEL(loop_ashr_6_use_sse4_2):
|
||||
|
||||
movdqa (%rdi, %rdx), %xmm0
|
||||
palignr $6, -16(%rdi, %rdx), %xmm0
|
||||
pcmpistri $0x1a,(%rsi,%rdx), %xmm0
|
||||
#ifndef USE_AS_STRCASECMP_L
|
||||
pcmpistri $0x1a,(%rsi,%rdx), %xmm0
|
||||
#else
|
||||
movdqa (%rsi,%rdx), %xmm1
|
||||
TOLOWER (%xmm0, %xmm1)
|
||||
pcmpistri $0x1a, %xmm1, %xmm0
|
||||
#endif
|
||||
jbe LABEL(use_sse4_2_exit)
|
||||
#ifdef USE_AS_STRNCMP
|
||||
sub $16, %r11
|
||||
@ -693,7 +877,13 @@ LABEL(loop_ashr_6_use_sse4_2):
|
||||
|
||||
movdqa (%rdi, %rdx), %xmm0
|
||||
palignr $6, -16(%rdi, %rdx), %xmm0
|
||||
pcmpistri $0x1a,(%rsi,%rdx), %xmm0
|
||||
#ifndef USE_AS_STRCASECMP_L
|
||||
pcmpistri $0x1a,(%rsi,%rdx), %xmm0
|
||||
#else
|
||||
movdqa (%rsi,%rdx), %xmm1
|
||||
TOLOWER (%xmm0, %xmm1)
|
||||
pcmpistri $0x1a, %xmm1, %xmm0
|
||||
#endif
|
||||
jbe LABEL(use_sse4_2_exit)
|
||||
#ifdef USE_AS_STRNCMP
|
||||
sub $16, %r11
|
||||
@ -729,6 +919,7 @@ LABEL(ashr_7_sse4_2):
|
||||
movdqa (%rsi), %xmm1
|
||||
pcmpeqb %xmm1, %xmm0
|
||||
pslldq $9, %xmm2
|
||||
TOLOWER (%xmm1, %xmm2)
|
||||
pcmpeqb %xmm1, %xmm2
|
||||
psubb %xmm0, %xmm2
|
||||
pmovmskb %xmm2, %r9d
|
||||
@ -760,7 +951,13 @@ LABEL(loop_ashr_7_use_sse4_2):
|
||||
|
||||
movdqa (%rdi, %rdx), %xmm0
|
||||
palignr $7, -16(%rdi, %rdx), %xmm0
|
||||
#ifndef USE_AS_STRCASECMP_L
|
||||
pcmpistri $0x1a,(%rsi,%rdx), %xmm0
|
||||
#else
|
||||
movdqa (%rsi,%rdx), %xmm1
|
||||
TOLOWER (%xmm0, %xmm1)
|
||||
pcmpistri $0x1a, %xmm1, %xmm0
|
||||
#endif
|
||||
jbe LABEL(use_sse4_2_exit)
|
||||
#ifdef USE_AS_STRNCMP
|
||||
sub $16, %r11
|
||||
@ -773,7 +970,13 @@ LABEL(loop_ashr_7_use_sse4_2):
|
||||
|
||||
movdqa (%rdi, %rdx), %xmm0
|
||||
palignr $7, -16(%rdi, %rdx), %xmm0
|
||||
#ifndef USE_AS_STRCASECMP_L
|
||||
pcmpistri $0x1a,(%rsi,%rdx), %xmm0
|
||||
#else
|
||||
movdqa (%rsi,%rdx), %xmm1
|
||||
TOLOWER (%xmm0, %xmm1)
|
||||
pcmpistri $0x1a, %xmm1, %xmm0
|
||||
#endif
|
||||
jbe LABEL(use_sse4_2_exit)
|
||||
#ifdef USE_AS_STRNCMP
|
||||
sub $16, %r11
|
||||
@ -809,6 +1012,7 @@ LABEL(ashr_8_sse4_2):
|
||||
movdqa (%rsi), %xmm1
|
||||
pcmpeqb %xmm1, %xmm0
|
||||
pslldq $8, %xmm2
|
||||
TOLOWER (%xmm1, %xmm2)
|
||||
pcmpeqb %xmm1, %xmm2
|
||||
psubb %xmm0, %xmm2
|
||||
pmovmskb %xmm2, %r9d
|
||||
@ -840,7 +1044,13 @@ LABEL(loop_ashr_8_use_sse4_2):
|
||||
|
||||
movdqa (%rdi, %rdx), %xmm0
|
||||
palignr $8, -16(%rdi, %rdx), %xmm0
|
||||
pcmpistri $0x1a,(%rsi,%rdx), %xmm0
|
||||
#ifndef USE_AS_STRCASECMP_L
|
||||
pcmpistri $0x1a, (%rsi,%rdx), %xmm0
|
||||
#else
|
||||
movdqa (%rsi,%rdx), %xmm1
|
||||
TOLOWER (%xmm0, %xmm1)
|
||||
pcmpistri $0x1a, %xmm1, %xmm0
|
||||
#endif
|
||||
jbe LABEL(use_sse4_2_exit)
|
||||
#ifdef USE_AS_STRNCMP
|
||||
sub $16, %r11
|
||||
@ -853,7 +1063,13 @@ LABEL(loop_ashr_8_use_sse4_2):
|
||||
|
||||
movdqa (%rdi, %rdx), %xmm0
|
||||
palignr $8, -16(%rdi, %rdx), %xmm0
|
||||
pcmpistri $0x1a,(%rsi,%rdx), %xmm0
|
||||
#ifndef USE_AS_STRCASECMP_L
|
||||
pcmpistri $0x1a, (%rsi,%rdx), %xmm0
|
||||
#else
|
||||
movdqa (%rsi,%rdx), %xmm1
|
||||
TOLOWER (%xmm0, %xmm1)
|
||||
pcmpistri $0x1a, %xmm1, %xmm0
|
||||
#endif
|
||||
jbe LABEL(use_sse4_2_exit)
|
||||
#ifdef USE_AS_STRNCMP
|
||||
sub $16, %r11
|
||||
@ -889,6 +1105,7 @@ LABEL(ashr_9_sse4_2):
|
||||
movdqa (%rsi), %xmm1
|
||||
pcmpeqb %xmm1, %xmm0
|
||||
pslldq $7, %xmm2
|
||||
TOLOWER (%xmm1, %xmm2)
|
||||
pcmpeqb %xmm1, %xmm2
|
||||
psubb %xmm0, %xmm2
|
||||
pmovmskb %xmm2, %r9d
|
||||
@ -921,7 +1138,13 @@ LABEL(loop_ashr_9_use_sse4_2):
|
||||
movdqa (%rdi, %rdx), %xmm0
|
||||
|
||||
palignr $9, -16(%rdi, %rdx), %xmm0
|
||||
pcmpistri $0x1a,(%rsi,%rdx), %xmm0
|
||||
#ifndef USE_AS_STRCASECMP_L
|
||||
pcmpistri $0x1a, (%rsi,%rdx), %xmm0
|
||||
#else
|
||||
movdqa (%rsi,%rdx), %xmm1
|
||||
TOLOWER (%xmm0, %xmm1)
|
||||
pcmpistri $0x1a, %xmm1, %xmm0
|
||||
#endif
|
||||
jbe LABEL(use_sse4_2_exit)
|
||||
#ifdef USE_AS_STRNCMP
|
||||
sub $16, %r11
|
||||
@ -934,7 +1157,13 @@ LABEL(loop_ashr_9_use_sse4_2):
|
||||
|
||||
movdqa (%rdi, %rdx), %xmm0
|
||||
palignr $9, -16(%rdi, %rdx), %xmm0
|
||||
pcmpistri $0x1a,(%rsi,%rdx), %xmm0
|
||||
#ifndef USE_AS_STRCASECMP_L
|
||||
pcmpistri $0x1a, (%rsi,%rdx), %xmm0
|
||||
#else
|
||||
movdqa (%rsi,%rdx), %xmm1
|
||||
TOLOWER (%xmm0, %xmm1)
|
||||
pcmpistri $0x1a, %xmm1, %xmm0
|
||||
#endif
|
||||
jbe LABEL(use_sse4_2_exit)
|
||||
#ifdef USE_AS_STRNCMP
|
||||
sub $16, %r11
|
||||
@ -970,6 +1199,7 @@ LABEL(ashr_10_sse4_2):
|
||||
movdqa (%rsi), %xmm1
|
||||
pcmpeqb %xmm1, %xmm0
|
||||
pslldq $6, %xmm2
|
||||
TOLOWER (%xmm1, %xmm2)
|
||||
pcmpeqb %xmm1, %xmm2
|
||||
psubb %xmm0, %xmm2
|
||||
pmovmskb %xmm2, %r9d
|
||||
@ -1001,7 +1231,13 @@ LABEL(loop_ashr_10_use_sse4_2):
|
||||
|
||||
movdqa (%rdi, %rdx), %xmm0
|
||||
palignr $10, -16(%rdi, %rdx), %xmm0
|
||||
pcmpistri $0x1a,(%rsi,%rdx), %xmm0
|
||||
#ifndef USE_AS_STRCASECMP_L
|
||||
pcmpistri $0x1a, (%rsi,%rdx), %xmm0
|
||||
#else
|
||||
movdqa (%rsi,%rdx), %xmm1
|
||||
TOLOWER (%xmm0, %xmm1)
|
||||
pcmpistri $0x1a, %xmm1, %xmm0
|
||||
#endif
|
||||
jbe LABEL(use_sse4_2_exit)
|
||||
#ifdef USE_AS_STRNCMP
|
||||
sub $16, %r11
|
||||
@ -1014,7 +1250,13 @@ LABEL(loop_ashr_10_use_sse4_2):
|
||||
|
||||
movdqa (%rdi, %rdx), %xmm0
|
||||
palignr $10, -16(%rdi, %rdx), %xmm0
|
||||
pcmpistri $0x1a,(%rsi,%rdx), %xmm0
|
||||
#ifndef USE_AS_STRCASECMP_L
|
||||
pcmpistri $0x1a, (%rsi,%rdx), %xmm0
|
||||
#else
|
||||
movdqa (%rsi,%rdx), %xmm1
|
||||
TOLOWER (%xmm0, %xmm1)
|
||||
pcmpistri $0x1a, %xmm1, %xmm0
|
||||
#endif
|
||||
jbe LABEL(use_sse4_2_exit)
|
||||
#ifdef USE_AS_STRNCMP
|
||||
sub $16, %r11
|
||||
@ -1050,6 +1292,7 @@ LABEL(ashr_11_sse4_2):
|
||||
movdqa (%rsi), %xmm1
|
||||
pcmpeqb %xmm1, %xmm0
|
||||
pslldq $5, %xmm2
|
||||
TOLOWER (%xmm1, %xmm2)
|
||||
pcmpeqb %xmm1, %xmm2
|
||||
psubb %xmm0, %xmm2
|
||||
pmovmskb %xmm2, %r9d
|
||||
@ -1081,7 +1324,13 @@ LABEL(loop_ashr_11_use_sse4_2):
|
||||
|
||||
movdqa (%rdi, %rdx), %xmm0
|
||||
palignr $11, -16(%rdi, %rdx), %xmm0
|
||||
pcmpistri $0x1a,(%rsi,%rdx), %xmm0
|
||||
#ifndef USE_AS_STRCASECMP_L
|
||||
pcmpistri $0x1a, (%rsi,%rdx), %xmm0
|
||||
#else
|
||||
movdqa (%rsi,%rdx), %xmm1
|
||||
TOLOWER (%xmm0, %xmm1)
|
||||
pcmpistri $0x1a, %xmm1, %xmm0
|
||||
#endif
|
||||
jbe LABEL(use_sse4_2_exit)
|
||||
#ifdef USE_AS_STRNCMP
|
||||
sub $16, %r11
|
||||
@ -1094,7 +1343,13 @@ LABEL(loop_ashr_11_use_sse4_2):
|
||||
|
||||
movdqa (%rdi, %rdx), %xmm0
|
||||
palignr $11, -16(%rdi, %rdx), %xmm0
|
||||
pcmpistri $0x1a,(%rsi,%rdx), %xmm0
|
||||
#ifndef USE_AS_STRCASECMP_L
|
||||
pcmpistri $0x1a, (%rsi,%rdx), %xmm0
|
||||
#else
|
||||
movdqa (%rsi,%rdx), %xmm1
|
||||
TOLOWER (%xmm0, %xmm1)
|
||||
pcmpistri $0x1a, %xmm1, %xmm0
|
||||
#endif
|
||||
jbe LABEL(use_sse4_2_exit)
|
||||
#ifdef USE_AS_STRNCMP
|
||||
sub $16, %r11
|
||||
@ -1130,6 +1385,7 @@ LABEL(ashr_12_sse4_2):
|
||||
movdqa (%rsi), %xmm1
|
||||
pcmpeqb %xmm1, %xmm0
|
||||
pslldq $4, %xmm2
|
||||
TOLOWER (%xmm1, %xmm2)
|
||||
pcmpeqb %xmm1, %xmm2
|
||||
psubb %xmm0, %xmm2
|
||||
pmovmskb %xmm2, %r9d
|
||||
@ -1161,7 +1417,13 @@ LABEL(loop_ashr_12_use_sse4_2):
|
||||
|
||||
movdqa (%rdi, %rdx), %xmm0
|
||||
palignr $12, -16(%rdi, %rdx), %xmm0
|
||||
pcmpistri $0x1a,(%rsi,%rdx), %xmm0
|
||||
#ifndef USE_AS_STRCASECMP_L
|
||||
pcmpistri $0x1a, (%rsi,%rdx), %xmm0
|
||||
#else
|
||||
movdqa (%rsi,%rdx), %xmm1
|
||||
TOLOWER (%xmm0, %xmm1)
|
||||
pcmpistri $0x1a, %xmm1, %xmm0
|
||||
#endif
|
||||
jbe LABEL(use_sse4_2_exit)
|
||||
#ifdef USE_AS_STRNCMP
|
||||
sub $16, %r11
|
||||
@ -1174,7 +1436,13 @@ LABEL(loop_ashr_12_use_sse4_2):
|
||||
|
||||
movdqa (%rdi, %rdx), %xmm0
|
||||
palignr $12, -16(%rdi, %rdx), %xmm0
|
||||
pcmpistri $0x1a,(%rsi,%rdx), %xmm0
|
||||
#ifndef USE_AS_STRCASECMP_L
|
||||
pcmpistri $0x1a, (%rsi,%rdx), %xmm0
|
||||
#else
|
||||
movdqa (%rsi,%rdx), %xmm1
|
||||
TOLOWER (%xmm0, %xmm1)
|
||||
pcmpistri $0x1a, %xmm1, %xmm0
|
||||
#endif
|
||||
jbe LABEL(use_sse4_2_exit)
|
||||
#ifdef USE_AS_STRNCMP
|
||||
sub $16, %r11
|
||||
@ -1210,6 +1478,7 @@ LABEL(ashr_13_sse4_2):
|
||||
movdqa (%rsi), %xmm1
|
||||
pcmpeqb %xmm1, %xmm0
|
||||
pslldq $3, %xmm2
|
||||
TOLOWER (%xmm1, %xmm2)
|
||||
pcmpeqb %xmm1, %xmm2
|
||||
psubb %xmm0, %xmm2
|
||||
pmovmskb %xmm2, %r9d
|
||||
@ -1242,7 +1511,13 @@ LABEL(loop_ashr_13_use_sse4_2):
|
||||
|
||||
movdqa (%rdi, %rdx), %xmm0
|
||||
palignr $13, -16(%rdi, %rdx), %xmm0
|
||||
pcmpistri $0x1a,(%rsi,%rdx), %xmm0
|
||||
#ifndef USE_AS_STRCASECMP_L
|
||||
pcmpistri $0x1a, (%rsi,%rdx), %xmm0
|
||||
#else
|
||||
movdqa (%rsi,%rdx), %xmm1
|
||||
TOLOWER (%xmm0, %xmm1)
|
||||
pcmpistri $0x1a, %xmm1, %xmm0
|
||||
#endif
|
||||
jbe LABEL(use_sse4_2_exit)
|
||||
#ifdef USE_AS_STRNCMP
|
||||
sub $16, %r11
|
||||
@ -1255,7 +1530,13 @@ LABEL(loop_ashr_13_use_sse4_2):
|
||||
|
||||
movdqa (%rdi, %rdx), %xmm0
|
||||
palignr $13, -16(%rdi, %rdx), %xmm0
|
||||
pcmpistri $0x1a,(%rsi,%rdx), %xmm0
|
||||
#ifndef USE_AS_STRCASECMP_L
|
||||
pcmpistri $0x1a, (%rsi,%rdx), %xmm0
|
||||
#else
|
||||
movdqa (%rsi,%rdx), %xmm1
|
||||
TOLOWER (%xmm0, %xmm1)
|
||||
pcmpistri $0x1a, %xmm1, %xmm0
|
||||
#endif
|
||||
jbe LABEL(use_sse4_2_exit)
|
||||
#ifdef USE_AS_STRNCMP
|
||||
sub $16, %r11
|
||||
@ -1291,6 +1572,7 @@ LABEL(ashr_14_sse4_2):
|
||||
movdqa (%rsi), %xmm1
|
||||
pcmpeqb %xmm1, %xmm0
|
||||
pslldq $2, %xmm2
|
||||
TOLOWER (%xmm1, %xmm2)
|
||||
pcmpeqb %xmm1, %xmm2
|
||||
psubb %xmm0, %xmm2
|
||||
pmovmskb %xmm2, %r9d
|
||||
@ -1323,7 +1605,13 @@ LABEL(loop_ashr_14_use_sse4_2):
|
||||
|
||||
movdqa (%rdi, %rdx), %xmm0
|
||||
palignr $14, -16(%rdi, %rdx), %xmm0
|
||||
pcmpistri $0x1a,(%rsi,%rdx), %xmm0
|
||||
#ifndef USE_AS_STRCASECMP_L
|
||||
pcmpistri $0x1a, (%rsi,%rdx), %xmm0
|
||||
#else
|
||||
movdqa (%rsi,%rdx), %xmm1
|
||||
TOLOWER (%xmm0, %xmm1)
|
||||
pcmpistri $0x1a, %xmm1, %xmm0
|
||||
#endif
|
||||
jbe LABEL(use_sse4_2_exit)
|
||||
#ifdef USE_AS_STRNCMP
|
||||
sub $16, %r11
|
||||
@ -1336,7 +1624,13 @@ LABEL(loop_ashr_14_use_sse4_2):
|
||||
|
||||
movdqa (%rdi, %rdx), %xmm0
|
||||
palignr $14, -16(%rdi, %rdx), %xmm0
|
||||
pcmpistri $0x1a,(%rsi,%rdx), %xmm0
|
||||
#ifndef USE_AS_STRCASECMP_L
|
||||
pcmpistri $0x1a, (%rsi,%rdx), %xmm0
|
||||
#else
|
||||
movdqa (%rsi,%rdx), %xmm1
|
||||
TOLOWER (%xmm0, %xmm1)
|
||||
pcmpistri $0x1a, %xmm1, %xmm0
|
||||
#endif
|
||||
jbe LABEL(use_sse4_2_exit)
|
||||
#ifdef USE_AS_STRNCMP
|
||||
sub $16, %r11
|
||||
@ -1372,6 +1666,7 @@ LABEL(ashr_15_sse4_2):
|
||||
movdqa (%rsi), %xmm1
|
||||
pcmpeqb %xmm1, %xmm0
|
||||
pslldq $1, %xmm2
|
||||
TOLOWER (%xmm1, %xmm2)
|
||||
pcmpeqb %xmm1, %xmm2
|
||||
psubb %xmm0, %xmm2
|
||||
pmovmskb %xmm2, %r9d
|
||||
@ -1406,7 +1701,13 @@ LABEL(loop_ashr_15_use_sse4_2):
|
||||
|
||||
movdqa (%rdi, %rdx), %xmm0
|
||||
palignr $15, -16(%rdi, %rdx), %xmm0
|
||||
pcmpistri $0x1a,(%rsi,%rdx), %xmm0
|
||||
#ifndef USE_AS_STRCASECMP_L
|
||||
pcmpistri $0x1a, (%rsi,%rdx), %xmm0
|
||||
#else
|
||||
movdqa (%rsi,%rdx), %xmm1
|
||||
TOLOWER (%xmm0, %xmm1)
|
||||
pcmpistri $0x1a, %xmm1, %xmm0
|
||||
#endif
|
||||
jbe LABEL(use_sse4_2_exit)
|
||||
#ifdef USE_AS_STRNCMP
|
||||
sub $16, %r11
|
||||
@ -1419,7 +1720,13 @@ LABEL(loop_ashr_15_use_sse4_2):
|
||||
|
||||
movdqa (%rdi, %rdx), %xmm0
|
||||
palignr $15, -16(%rdi, %rdx), %xmm0
|
||||
pcmpistri $0x1a,(%rsi,%rdx), %xmm0
|
||||
#ifndef USE_AS_STRCASECMP_L
|
||||
pcmpistri $0x1a, (%rsi,%rdx), %xmm0
|
||||
#else
|
||||
movdqa (%rsi,%rdx), %xmm1
|
||||
TOLOWER (%xmm0, %xmm1)
|
||||
pcmpistri $0x1a, %xmm1, %xmm0
|
||||
#endif
|
||||
jbe LABEL(use_sse4_2_exit)
|
||||
#ifdef USE_AS_STRNCMP
|
||||
sub $16, %r11
|
||||
@ -1458,6 +1765,12 @@ LABEL(use_sse4_2_exit):
|
||||
jz LABEL(use_sse4_2_ret_sse4_2)
|
||||
xchg %eax, %edx
|
||||
LABEL(use_sse4_2_ret_sse4_2):
|
||||
# ifdef USE_AS_STRCASECMP_L
|
||||
leaq _nl_C_LC_CTYPE_tolower+128*4(%rip), %rcx
|
||||
movl (%rcx,%rdx,4), %edx
|
||||
movl (%rcx,%rax,4), %eax
|
||||
# endif
|
||||
|
||||
sub %edx, %eax
|
||||
ret
|
||||
|
||||
@ -1480,6 +1793,12 @@ LABEL(less16bytes_sse4_2):
|
||||
movzbl (%rsi, %rdx), %ecx
|
||||
movzbl (%rdi, %rdx), %eax
|
||||
|
||||
# ifdef USE_AS_STRCASECMP_L
|
||||
leaq _nl_C_LC_CTYPE_tolower+128*4(%rip), %rdx
|
||||
movl (%rdx,%rcx,4), %ecx
|
||||
movl (%rdx,%rax,4), %eax
|
||||
# endif
|
||||
|
||||
sub %ecx, %eax
|
||||
ret
|
||||
|
||||
@ -1488,15 +1807,27 @@ LABEL(strcmp_exitz_sse4_2):
|
||||
ret
|
||||
|
||||
.p2align 4
|
||||
// XXX Same as code above
|
||||
LABEL(Byte0_sse4_2):
|
||||
movzx (%rsi), %ecx
|
||||
movzx (%rdi), %eax
|
||||
|
||||
# ifdef USE_AS_STRCASECMP_L
|
||||
leaq _nl_C_LC_CTYPE_tolower+128*4(%rip), %rdx
|
||||
movl (%rdx,%rcx,4), %ecx
|
||||
movl (%rdx,%rax,4), %eax
|
||||
# endif
|
||||
|
||||
sub %ecx, %eax
|
||||
ret
|
||||
cfi_endproc
|
||||
.size STRCMP_SSE42, .-STRCMP_SSE42
|
||||
|
||||
# undef UCLOW_reg
|
||||
# undef UCHIGH_reg
|
||||
# undef LCQWORD_reg
|
||||
# undef TOLOWER
|
||||
|
||||
/* Put all SSE 4.2 functions together. */
|
||||
.section .rodata.sse4.2,"a",@progbits
|
||||
.p2align 3
|
||||
@ -1528,6 +1859,17 @@ LABEL(unaligned_table_sse4_2):
|
||||
# undef END
|
||||
# define END(name) \
|
||||
cfi_endproc; .size STRCMP_SSE2, .-STRCMP_SSE2
|
||||
|
||||
# ifdef USE_AS_STRCASECMP_L
|
||||
# define ENTRY2(name) \
|
||||
.type __strcasecmp_sse2, @function; \
|
||||
.align 16; \
|
||||
__strcasecmp_sse2: cfi_startproc; \
|
||||
CALL_MCOUNT
|
||||
# define END2(name) \
|
||||
cfi_endproc; .size __strcasecmp_sse2, .-__strcasecmp_sse2
|
||||
# endif
|
||||
|
||||
# undef libc_hidden_builtin_def
|
||||
/* It doesn't make sense to send libc-internal strcmp calls through a PLT.
|
||||
The speedup we get from using SSE4.2 instruction is likely eaten away
|
||||
|
||||
@ -74,15 +74,24 @@
|
||||
#endif
|
||||
|
||||
#ifdef USE_AS_STRCASECMP_L
|
||||
ENTRY (__strcasecmp)
|
||||
# ifndef ENTRY2
|
||||
# define ENTRY2(name) ENTRY (name)
|
||||
# define END2(name) END (name)
|
||||
# define NO_NOLOCALE_ALIAS
|
||||
# endif
|
||||
|
||||
ENTRY2 (__strcasecmp)
|
||||
movq __libc_tsd_LOCALE@gottpoff(%rip),%rax
|
||||
movq %fs:(%rax),%rdx
|
||||
|
||||
// XXX 5 byte should be before the function
|
||||
/* 5-byte NOP. */
|
||||
.byte 0x0f,0x1f,0x44,0x00,0x00
|
||||
END (__strcasecmp)
|
||||
END2 (__strcasecmp)
|
||||
# ifndef NO_NOLOCALE_ALIAS
|
||||
weak_alias (__strcasecmp, strcasecmp)
|
||||
libc_hidden_def (__strcasecmp)
|
||||
# endif
|
||||
/* FALLTHROUGH to strcasecmp_l. */
|
||||
#endif
|
||||
|
||||
|
||||
Loading…
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Reference in New Issue
Block a user