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reading 8bit mem into a 8bit register needs 2 uops on P4, 8bit->32bit with zero extension needs just 1
Originally committed as revision 6612 to svn://svn.ffmpeg.org/ffmpeg/trunktags/v0.5
Michael Niedermayer
19 years ago
1 changed files with 7 additions and 7 deletions
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-
+7 -7libavcodec/cabac.h
+ 7
- 7
libavcodec/cabac.h
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| @@ -393,7 +393,7 @@ static int get_cabac(CABACContext *c, uint8_t * const state){ | |||||
| "setb %%cl \n\t" | "setb %%cl \n\t" | ||||
| "shl %%cl, %%edx \n\t" | "shl %%cl, %%edx \n\t" | ||||
| "shl %%cl, %%ebx \n\t" | "shl %%cl, %%ebx \n\t" | ||||
| "movb "MPS_STATE"(%2, %%eax), %%cl \n\t" | |||||
| "movzbl "MPS_STATE"(%2, %%eax), %%ecx \n\t" | |||||
| "movb %%cl, (%1) \n\t" | "movb %%cl, (%1) \n\t" | ||||
| //eax:state ebx:low, edx:range, esi:RangeLPS | //eax:state ebx:low, edx:range, esi:RangeLPS | ||||
| "test %%bx, %%bx \n\t" | "test %%bx, %%bx \n\t" | ||||
| @@ -412,10 +412,10 @@ static int get_cabac(CABACContext *c, uint8_t * const state){ | |||||
| "subl %%edx, %%ebx \n\t" | "subl %%edx, %%ebx \n\t" | ||||
| "movl %%esi, %%edx \n\t" | "movl %%esi, %%edx \n\t" | ||||
| "shr $19, %%esi \n\t" | "shr $19, %%esi \n\t" | ||||
| "movb " MANGLE(ff_h264_norm_shift) "(%%esi), %%cl \n\t" | |||||
| "movzbl " MANGLE(ff_h264_norm_shift) "(%%esi), %%ecx \n\t" | |||||
| "shll %%cl, %%ebx \n\t" | "shll %%cl, %%ebx \n\t" | ||||
| "shll %%cl, %%edx \n\t" | "shll %%cl, %%edx \n\t" | ||||
| "movb "LPS_STATE"(%2, %%eax), %%cl \n\t" | |||||
| "movzbl "LPS_STATE"(%2, %%eax), %%ecx \n\t" | |||||
| "movb %%cl, (%1) \n\t" | "movb %%cl, (%1) \n\t" | ||||
| "addl $1, %%eax \n\t" | "addl $1, %%eax \n\t" | ||||
| "test %%bx, %%bx \n\t" | "test %%bx, %%bx \n\t" | ||||
| @@ -432,7 +432,7 @@ static int get_cabac(CABACContext *c, uint8_t * const state){ | |||||
| "leal -1(%%ebx), %%ecx \n\t" | "leal -1(%%ebx), %%ecx \n\t" | ||||
| "xorl %%ebx, %%ecx \n\t" | "xorl %%ebx, %%ecx \n\t" | ||||
| "shrl $17, %%ecx \n\t" | "shrl $17, %%ecx \n\t" | ||||
| "movb " MANGLE(ff_h264_norm_shift) "(%%ecx), %%cl \n\t" | |||||
| "movzbl " MANGLE(ff_h264_norm_shift) "(%%ecx), %%ecx \n\t" | |||||
| "neg %%cl \n\t" | "neg %%cl \n\t" | ||||
| "add $7, %%cl \n\t" | "add $7, %%cl \n\t" | ||||
| @@ -470,14 +470,14 @@ static int get_cabac(CABACContext *c, uint8_t * const state){ | |||||
| //eax:state ebx:low edx:mask esi:range | //eax:state ebx:low edx:mask esi:range | ||||
| "xorl %%edx, %%eax \n\t" | "xorl %%edx, %%eax \n\t" | ||||
| "movb "MPS_STATE"(%2, %%eax), %%cl \n\t" | |||||
| "movzbl "MPS_STATE"(%2, %%eax), %%ecx \n\t" | |||||
| "movb %%cl, (%1) \n\t" | "movb %%cl, (%1) \n\t" | ||||
| "movl %%esi, %%edx \n\t" | "movl %%esi, %%edx \n\t" | ||||
| //eax:bit ebx:low edx:range esi:range | //eax:bit ebx:low edx:range esi:range | ||||
| "shr $19, %%esi \n\t" | "shr $19, %%esi \n\t" | ||||
| "movb " MANGLE(ff_h264_norm_shift) "(%%esi), %%cl \n\t" | |||||
| "movzbl " MANGLE(ff_h264_norm_shift) "(%%esi), %%ecx \n\t" | |||||
| "shll %%cl, %%ebx \n\t" | "shll %%cl, %%ebx \n\t" | ||||
| "shll %%cl, %%edx \n\t" | "shll %%cl, %%edx \n\t" | ||||
| "test %%bx, %%bx \n\t" | "test %%bx, %%bx \n\t" | ||||
| @@ -494,7 +494,7 @@ static int get_cabac(CABACContext *c, uint8_t * const state){ | |||||
| "leal -1(%%ebx), %%ecx \n\t" | "leal -1(%%ebx), %%ecx \n\t" | ||||
| "xorl %%ebx, %%ecx \n\t" | "xorl %%ebx, %%ecx \n\t" | ||||
| "shrl $17, %%ecx \n\t" | "shrl $17, %%ecx \n\t" | ||||
| "movb " MANGLE(ff_h264_norm_shift) "(%%ecx), %%cl \n\t" | |||||
| "movzbl " MANGLE(ff_h264_norm_shift) "(%%ecx), %%ecx \n\t" | |||||
| "neg %%cl \n\t" | "neg %%cl \n\t" | ||||
| "add $7, %%cl \n\t" | "add $7, %%cl \n\t" | ||||