diff options
Diffstat (limited to 'sysdeps/x86_64/memrchr.S')
| -rw-r--r-- | sysdeps/x86_64/memrchr.S | 380 |
1 files changed, 0 insertions, 380 deletions
diff --git a/sysdeps/x86_64/memrchr.S b/sysdeps/x86_64/memrchr.S deleted file mode 100644 index 5fa0fe9c1c..0000000000 --- a/sysdeps/x86_64/memrchr.S +++ /dev/null @@ -1,380 +0,0 @@ -/* fast SSE2 memrchr with 64 byte loop and pmaxub instruction using - - Copyright (C) 2011-2017 Free Software Foundation, Inc. - Contributed by Intel Corporation. - 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 - <http://www.gnu.org/licenses/>. */ - -#include <sysdep.h> - - .text -ENTRY (__memrchr) - movd %esi, %xmm1 - - sub $16, %rdx - jbe L(length_less16) - - punpcklbw %xmm1, %xmm1 - punpcklbw %xmm1, %xmm1 - - add %rdx, %rdi - pshufd $0, %xmm1, %xmm1 - - movdqu (%rdi), %xmm0 - pcmpeqb %xmm1, %xmm0 - -/* Check if there is a match. */ - pmovmskb %xmm0, %eax - test %eax, %eax - jnz L(matches0) - - sub $64, %rdi - mov %edi, %ecx - and $15, %ecx - jz L(loop_prolog) - - add $16, %rdi - add $16, %rdx - and $-16, %rdi - sub %rcx, %rdx - - .p2align 4 -L(loop_prolog): - sub $64, %rdx - jbe L(exit_loop) - - movdqa 48(%rdi), %xmm0 - pcmpeqb %xmm1, %xmm0 - pmovmskb %xmm0, %eax - test %eax, %eax - jnz L(matches48) - - movdqa 32(%rdi), %xmm2 - pcmpeqb %xmm1, %xmm2 - pmovmskb %xmm2, %eax - test %eax, %eax - jnz L(matches32) - - movdqa 16(%rdi), %xmm3 - pcmpeqb %xmm1, %xmm3 - pmovmskb %xmm3, %eax - test %eax, %eax - jnz L(matches16) - - movdqa (%rdi), %xmm4 - pcmpeqb %xmm1, %xmm4 - pmovmskb %xmm4, %eax - test %eax, %eax - jnz L(matches0) - - sub $64, %rdi - sub $64, %rdx - jbe L(exit_loop) - - movdqa 48(%rdi), %xmm0 - pcmpeqb %xmm1, %xmm0 - pmovmskb %xmm0, %eax - test %eax, %eax - jnz L(matches48) - - movdqa 32(%rdi), %xmm2 - pcmpeqb %xmm1, %xmm2 - pmovmskb %xmm2, %eax - test %eax, %eax - jnz L(matches32) - - movdqa 16(%rdi), %xmm3 - pcmpeqb %xmm1, %xmm3 - pmovmskb %xmm3, %eax - test %eax, %eax - jnz L(matches16) - - movdqa (%rdi), %xmm3 - pcmpeqb %xmm1, %xmm3 - pmovmskb %xmm3, %eax - test %eax, %eax - jnz L(matches0) - - mov %edi, %ecx - and $63, %ecx - jz L(align64_loop) - - add $64, %rdi - add $64, %rdx - and $-64, %rdi - sub %rcx, %rdx - - .p2align 4 -L(align64_loop): - sub $64, %rdi - sub $64, %rdx - jbe L(exit_loop) - - movdqa (%rdi), %xmm0 - movdqa 16(%rdi), %xmm2 - movdqa 32(%rdi), %xmm3 - movdqa 48(%rdi), %xmm4 - - pcmpeqb %xmm1, %xmm0 - pcmpeqb %xmm1, %xmm2 - pcmpeqb %xmm1, %xmm3 - pcmpeqb %xmm1, %xmm4 - - pmaxub %xmm3, %xmm0 - pmaxub %xmm4, %xmm2 - pmaxub %xmm0, %xmm2 - pmovmskb %xmm2, %eax - - test %eax, %eax - jz L(align64_loop) - - pmovmskb %xmm4, %eax - test %eax, %eax - jnz L(matches48) - - pmovmskb %xmm3, %eax - test %eax, %eax - jnz L(matches32) - - movdqa 16(%rdi), %xmm2 - - pcmpeqb %xmm1, %xmm2 - pcmpeqb (%rdi), %xmm1 - - pmovmskb %xmm2, %eax - test %eax, %eax - jnz L(matches16) - - pmovmskb %xmm1, %eax - bsr %eax, %eax - - add %rdi, %rax - ret - - .p2align 4 -L(exit_loop): - add $64, %edx - cmp $32, %edx - jbe L(exit_loop_32) - - movdqa 48(%rdi), %xmm0 - pcmpeqb %xmm1, %xmm0 - pmovmskb %xmm0, %eax - test %eax, %eax - jnz L(matches48) - - movdqa 32(%rdi), %xmm2 - pcmpeqb %xmm1, %xmm2 - pmovmskb %xmm2, %eax - test %eax, %eax - jnz L(matches32) - - movdqa 16(%rdi), %xmm3 - pcmpeqb %xmm1, %xmm3 - pmovmskb %xmm3, %eax - test %eax, %eax - jnz L(matches16_1) - cmp $48, %edx - jbe L(return_null) - - pcmpeqb (%rdi), %xmm1 - pmovmskb %xmm1, %eax - test %eax, %eax - jnz L(matches0_1) - xor %eax, %eax - ret - - .p2align 4 -L(exit_loop_32): - movdqa 48(%rdi), %xmm0 - pcmpeqb %xmm1, %xmm0 - pmovmskb %xmm0, %eax - test %eax, %eax - jnz L(matches48_1) - cmp $16, %edx - jbe L(return_null) - - pcmpeqb 32(%rdi), %xmm1 - pmovmskb %xmm1, %eax - test %eax, %eax - jnz L(matches32_1) - xor %eax, %eax - ret - - .p2align 4 -L(matches0): - bsr %eax, %eax - add %rdi, %rax - ret - - .p2align 4 -L(matches16): - bsr %eax, %eax - lea 16(%rax, %rdi), %rax - ret - - .p2align 4 -L(matches32): - bsr %eax, %eax - lea 32(%rax, %rdi), %rax - ret - - .p2align 4 -L(matches48): - bsr %eax, %eax - lea 48(%rax, %rdi), %rax - ret - - .p2align 4 -L(matches0_1): - bsr %eax, %eax - sub $64, %rdx - add %rax, %rdx - jl L(return_null) - add %rdi, %rax - ret - - .p2align 4 -L(matches16_1): - bsr %eax, %eax - sub $48, %rdx - add %rax, %rdx - jl L(return_null) - lea 16(%rdi, %rax), %rax - ret - - .p2align 4 -L(matches32_1): - bsr %eax, %eax - sub $32, %rdx - add %rax, %rdx - jl L(return_null) - lea 32(%rdi, %rax), %rax - ret - - .p2align 4 -L(matches48_1): - bsr %eax, %eax - sub $16, %rdx - add %rax, %rdx - jl L(return_null) - lea 48(%rdi, %rax), %rax - ret - - .p2align 4 -L(return_null): - xor %eax, %eax - ret - - .p2align 4 -L(length_less16_offset0): - test %edx, %edx - jz L(return_null) - - mov %dl, %cl - pcmpeqb (%rdi), %xmm1 - - mov $1, %edx - sal %cl, %edx - sub $1, %edx - - pmovmskb %xmm1, %eax - - and %edx, %eax - test %eax, %eax - jz L(return_null) - - bsr %eax, %eax - add %rdi, %rax - ret - - .p2align 4 -L(length_less16): - punpcklbw %xmm1, %xmm1 - punpcklbw %xmm1, %xmm1 - - add $16, %edx - - pshufd $0, %xmm1, %xmm1 - - mov %edi, %ecx - and $15, %ecx - jz L(length_less16_offset0) - - mov %cl, %dh - mov %ecx, %esi - add %dl, %dh - and $-16, %rdi - - sub $16, %dh - ja L(length_less16_part2) - - pcmpeqb (%rdi), %xmm1 - pmovmskb %xmm1, %eax - - sar %cl, %eax - mov %dl, %cl - - mov $1, %edx - sal %cl, %edx - sub $1, %edx - - and %edx, %eax - test %eax, %eax - jz L(return_null) - - bsr %eax, %eax - add %rdi, %rax - add %rsi, %rax - ret - - .p2align 4 -L(length_less16_part2): - movdqa 16(%rdi), %xmm2 - pcmpeqb %xmm1, %xmm2 - pmovmskb %xmm2, %eax - - mov %dh, %cl - mov $1, %edx - sal %cl, %edx - sub $1, %edx - - and %edx, %eax - - test %eax, %eax - jnz L(length_less16_part2_return) - - pcmpeqb (%rdi), %xmm1 - pmovmskb %xmm1, %eax - - mov %esi, %ecx - sar %cl, %eax - test %eax, %eax - jz L(return_null) - - bsr %eax, %eax - add %rdi, %rax - add %rsi, %rax - ret - - .p2align 4 -L(length_less16_part2_return): - bsr %eax, %eax - lea 16(%rax, %rdi), %rax - ret - -END (__memrchr) -weak_alias (__memrchr, memrchr) |