Module: libav Branch: master Commit: 34ee43fc0fa7f40a280f4f93a3c6aa5bf7a2704b
Author: Mans Rullgard <[email protected]> Committer: Mans Rullgard <[email protected]> Date: Mon Jun 20 01:58:36 2011 +0100 cabac: remove inline asm under #if 0 A comment says it's not faster than the C code. Signed-off-by: Mans Rullgard <[email protected]> --- libavcodec/cabac.h | 31 ------------------------------- 1 files changed, 0 insertions(+), 31 deletions(-) diff --git a/libavcodec/cabac.h b/libavcodec/cabac.h index 6b7ef45..0993eb8 100644 --- a/libavcodec/cabac.h +++ b/libavcodec/cabac.h @@ -423,36 +423,6 @@ static int av_unused get_cabac(CABACContext *c, uint8_t * const state){ } static int av_unused get_cabac_bypass(CABACContext *c){ -#if 0 //not faster - int bit; - __asm__ volatile( - "movl "RANGE "(%1), %%ebx \n\t" - "movl "LOW "(%1), %%eax \n\t" - "shl $17, %%ebx \n\t" - "add %%eax, %%eax \n\t" - "sub %%ebx, %%eax \n\t" - "cltd \n\t" - "and %%edx, %%ebx \n\t" - "add %%ebx, %%eax \n\t" - "test %%ax, %%ax \n\t" - " jnz 1f \n\t" - "movl "BYTE "(%1), %%"REG_b" \n\t" - "subl $0xFFFF, %%eax \n\t" - "movzwl (%%"REG_b"), %%ecx \n\t" - "bswap %%ecx \n\t" - "shrl $15, %%ecx \n\t" - "addl $2, %%"REG_b" \n\t" - "addl %%ecx, %%eax \n\t" - "movl %%"REG_b", "BYTE "(%1) \n\t" - "1: \n\t" - "movl %%eax, "LOW "(%1) \n\t" - - :"=&d"(bit) - :"r"(c) - : "%eax", "%"REG_b, "%ecx", "memory" - ); - return bit+1; -#else int range; c->low += c->low; @@ -466,7 +436,6 @@ static int av_unused get_cabac_bypass(CABACContext *c){ c->low -= range; return 1; } -#endif } _______________________________________________ libav-commits mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-commits
