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libswscale/x86/hscale_fast_bilinear_simd.c: There's no need to save BX if it's in the clobber list.

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Nick Lewycky 2015-05-12 18:08:45 -07:00 committed by Michael Niedermayer
parent 48e9f68384
commit 891df2a1ae
1 changed files with 24 additions and 37 deletions
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61
libswscale/x86/hscale_fast_bilinear_simd.c
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@ -196,24 +196,21 @@ void ff_hyscale_fast_mmxext(SwsContext *c, int16_t *dst,
int16_t *filter = c->hLumFilter;
void *mmxextFilterCode = c->lumMmxextFilterCode;
int i;
#if ARCH_X86_64
uint64_t retsave;
#else
#if defined(PIC)
uint64_t ebxsave;
#endif
#if ARCH_X86_64
uint64_t retsave;
#endif
__asm__ volatile(
#if defined(PIC)
"mov %%"REG_b", %5 \n\t"
#if ARCH_X86_64
"mov -8(%%rsp), %%"REG_a" \n\t"
"mov %%"REG_a", %6 \n\t"
#endif
"mov %%"REG_a", %5 \n\t" // retsave
#else
#if ARCH_X86_64
"mov -8(%%rsp), %%"REG_a" \n\t"
"mov %%"REG_a", %5 \n\t"
#if defined(PIC)
"mov %%"REG_b", %5 \n\t" // ebxsave
#endif
#endif
"pxor %%mm7, %%mm7 \n\t"
@ -254,25 +251,22 @@ void ff_hyscale_fast_mmxext(SwsContext *c, int16_t *dst,
CALL_MMXEXT_FILTER_CODE
CALL_MMXEXT_FILTER_CODE
#if defined(PIC)
"mov %5, %%"REG_b" \n\t"
#if ARCH_X86_64
"mov %6, %%"REG_a" \n\t"
"mov %%"REG_a", -8(%%rsp) \n\t"
#endif
#else
#if ARCH_X86_64
"mov %5, %%"REG_a" \n\t"
"mov %%"REG_a", -8(%%rsp) \n\t"
#else
#if defined(PIC)
"mov %5, %%"REG_b" \n\t"
#endif
#endif
:: "m" (src), "m" (dst), "m" (filter), "m" (filterPos),
"m" (mmxextFilterCode)
#if ARCH_X86_64
,"m"(retsave)
#else
#if defined(PIC)
,"m" (ebxsave)
#endif
#if ARCH_X86_64
,"m"(retsave)
#endif
: "%"REG_a, "%"REG_c, "%"REG_d, "%"REG_S, "%"REG_D
#if ARCH_X86_64 || !defined(PIC)
@ -292,24 +286,20 @@ void ff_hcscale_fast_mmxext(SwsContext *c, int16_t *dst1, int16_t *dst2,
int16_t *filter = c->hChrFilter;
void *mmxextFilterCode = c->chrMmxextFilterCode;
int i;
#if ARCH_X86_64
DECLARE_ALIGNED(8, uint64_t, retsave);
#else
#if defined(PIC)
DECLARE_ALIGNED(8, uint64_t, ebxsave);
#endif
#if ARCH_X86_64
DECLARE_ALIGNED(8, uint64_t, retsave);
#endif
__asm__ volatile(
#if defined(PIC)
"mov %%"REG_b", %7 \n\t"
#if ARCH_X86_64
"mov -8(%%rsp), %%"REG_a" \n\t"
"mov %%"REG_a", %8 \n\t"
#endif
"mov %%"REG_a", %7 \n\t" // retsave
#else
#if ARCH_X86_64
"mov -8(%%rsp), %%"REG_a" \n\t"
"mov %%"REG_a", %7 \n\t"
#if defined(PIC)
"mov %%"REG_b", %7 \n\t" // ebxsave
#endif
#endif
"pxor %%mm7, %%mm7 \n\t"
@ -338,25 +328,22 @@ void ff_hcscale_fast_mmxext(SwsContext *c, int16_t *dst1, int16_t *dst2,
CALL_MMXEXT_FILTER_CODE
CALL_MMXEXT_FILTER_CODE
#if defined(PIC)
"mov %7, %%"REG_b" \n\t"
#if ARCH_X86_64
"mov %8, %%"REG_a" \n\t"
"mov %%"REG_a", -8(%%rsp) \n\t"
#endif
#else
#if ARCH_X86_64
"mov %7, %%"REG_a" \n\t"
"mov %%"REG_a", -8(%%rsp) \n\t"
#else
#if defined(PIC)
"mov %7, %%"REG_b" \n\t"
#endif
#endif
:: "m" (src1), "m" (dst1), "m" (filter), "m" (filterPos),
"m" (mmxextFilterCode), "m" (src2), "m"(dst2)
#if ARCH_X86_64
,"m"(retsave)
#else
#if defined(PIC)
,"m" (ebxsave)
#endif
#if ARCH_X86_64
,"m"(retsave)
#endif
: "%"REG_a, "%"REG_c, "%"REG_d, "%"REG_S, "%"REG_D
#if ARCH_X86_64 || !defined(PIC)