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slowdown / gcc 2.95.* bug workaround (this should be reversed as soon as gcc 2.95.* support is droped)

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Originally committed as revision 1397 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2003-01-05 19:53:07 +00:00
parent e9effafdf9
commit 3643bd9c31
1 changed files with 34 additions and 9 deletions
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43
libavcodec/i386/dsputil_mmx.c
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@ -677,6 +677,9 @@ void OPNAME ## mpeg4_qpel16_h_lowpass_mmx2(uint8_t *dst, uint8_t *src, int dstSt
uint64_t temp;\
\
asm volatile(\
"pushl %0 \n\t"\
"pushl %1 \n\t"\
"pushl %2 \n\t"\
"pxor %%mm7, %%mm7 \n\t"\
"1: \n\t"\
"movq (%0), %%mm0 \n\t" /* ABCDEFGH */\
@ -787,8 +790,11 @@ void OPNAME ## mpeg4_qpel16_h_lowpass_mmx2(uint8_t *dst, uint8_t *src, int dstSt
"addl %4, %1 \n\t"\
"decl %2 \n\t"\
" jnz 1b \n\t"\
: "+r"(src), "+r"(dst), "+g"(h)\
: "r"(srcStride), "r"(dstStride), "m"(ff_pw_20), "m"(ff_pw_3), "m"(temp), "m"(ROUNDER)\
"popl %2 \n\t"\
"popl %1 \n\t"\
"popl %0 \n\t"\
:: "r"(src), "r"(dst), "r"(h),\
"r"(srcStride), "r"(dstStride), "m"(ff_pw_20), "m"(ff_pw_3), "m"(temp), "m"(ROUNDER)\
);\
}\
\
@ -871,8 +877,12 @@ void OPNAME ## mpeg4_qpel16_v_lowpass_mmx(uint8_t *dst, uint8_t *src, int dstStr
count=4;\
\
/*FIXME reorder for speed */\
/*FIXME remove push/pop gcc 2.95 bug workaround here and in the other 3 lowpass filters */\
asm volatile(\
/*"pxor %%mm7, %%mm7 \n\t"*/\
"pushl %0 \n\t"\
"pushl %1 \n\t"\
"pushl %2 \n\t"\
"1: \n\t"\
"movq (%0), %%mm0 \n\t"\
"movq 8(%0), %%mm1 \n\t"\
@ -908,15 +918,21 @@ void OPNAME ## mpeg4_qpel16_v_lowpass_mmx(uint8_t *dst, uint8_t *src, int dstStr
"addl %8, %1 \n\t"\
"decl %2 \n\t"\
" jnz 1b \n\t"\
\
: "+r"(temp_ptr), "+r"(dst), "+g"(count)\
: "r"(dstStride), "r"(2*dstStride), "m"(ff_pw_20), "m"(ff_pw_3), "m"(ROUNDER), "g"(4-14*dstStride)\
"popl %2 \n\t"\
"popl %1 \n\t"\
"popl %0 \n\t"\
\
:: "r"(temp_ptr), "r"(dst), "r"(count),\
"r"(dstStride), "r"(2*dstStride), "m"(ff_pw_20), "m"(ff_pw_3), "m"(ROUNDER), "g"(4-14*dstStride)\
);\
}\
void OPNAME ## mpeg4_qpel8_h_lowpass_mmx2(uint8_t *dst, uint8_t *src, int dstStride, int srcStride, int h){\
uint64_t temp;\
\
asm volatile(\
"pushl %0 \n\t"\
"pushl %1 \n\t"\
"pushl %2 \n\t"\
"pxor %%mm7, %%mm7 \n\t"\
"1: \n\t"\
"movq (%0), %%mm0 \n\t" /* ABCDEFGH */\
@ -973,8 +989,11 @@ void OPNAME ## mpeg4_qpel8_h_lowpass_mmx2(uint8_t *dst, uint8_t *src, int dstStr
"addl %4, %1 \n\t"\
"decl %2 \n\t"\
" jnz 1b \n\t"\
: "+r"(src), "+r"(dst), "+g"(h)\
: "r"(srcStride), "r"(dstStride), "m"(ff_pw_20), "m"(ff_pw_3), "m"(temp), "m"(ROUNDER)\
"popl %2 \n\t"\
"popl %1 \n\t"\
"popl %0 \n\t"\
:: "r"(src), "r"(dst), "r"(h),\
"r"(srcStride), "r"(dstStride), "m"(ff_pw_20), "m"(ff_pw_3), "m"(temp), "m"(ROUNDER)\
);\
}\
\
@ -1036,6 +1055,9 @@ void OPNAME ## mpeg4_qpel8_v_lowpass_mmx(uint8_t *dst, uint8_t *src, int dstStri
\
/*FIXME reorder for speed */\
asm volatile(\
"pushl %0 \n\t"\
"pushl %1 \n\t"\
"pushl %2 \n\t"\
/*"pxor %%mm7, %%mm7 \n\t"*/\
"1: \n\t"\
"movq (%0), %%mm0 \n\t"\
@ -1060,9 +1082,12 @@ void OPNAME ## mpeg4_qpel8_v_lowpass_mmx(uint8_t *dst, uint8_t *src, int dstStri
"addl %8, %1 \n\t"\
"decl %2 \n\t"\
" jnz 1b \n\t"\
"popl %2 \n\t"\
"popl %1 \n\t"\
"popl %0 \n\t"\
\
: "+r"(temp_ptr), "+r"(dst), "+g"(count)\
: "r"(dstStride), "r"(2*dstStride), "m"(ff_pw_20), "m"(ff_pw_3), "m"(ROUNDER), "g"(4-6*dstStride)\
:: "r"(temp_ptr), "r"(dst), "r"(count),\
"r"(dstStride), "r"(2*dstStride), "m"(ff_pw_20), "m"(ff_pw_3), "m"(ROUNDER), "g"(4-6*dstStride)\
);\
}