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mmx: Use Loongson pinsrh instruction in pack_565

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The pinsrh instruction is analogous to MMX EXT's pinsrw, except like
other Loongson vector instructions it cannot access the general purpose
registers. In the cases of other Loongson vector instructions, this is a
headache, but it is actually a good thing here. Since the instruction is
different from MMX, I've named the intrinsic loongson_insert_pi16.

 text	data	bss	dec	 hex filename
25976	1952	  0   27928	6d18 .libs/libpixman_loongson_mmi_la-pixman-mmx.o
25336	1952	  0   27288	6a98 .libs/libpixman_loongson_mmi_la-pixman-mmx.o

-and: 181
+and: 147
-dsll: 143
+dsll: 95
-dsrl: 87
+dsrl: 135
-ldc1: 523
+ldc1: 462
-lw: 767
+lw: 721
+pinsrh: 35
This commit is contained in:
Matt Turner 2012-04-17 11:28:33 -04:00
parent 6d29b7d755
commit facceb4a1f
2 changed files with 25 additions and 0 deletions
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11
pixman/loongson-mmintrin.h
View File

@ -216,3 +216,14 @@ _mm_xor_si64 (__m64 __m1, __m64 __m2)
);
return ret;
}
extern __inline __m64 __attribute__((__gnu_inline__, __always_inline__, __artificial__))
loongson_insert_pi16 (__m64 __m1, __m64 __m2, int64_t __pos)
{
__m64 ret;
asm("pinsrh_%3 %0, %1, %2\n\t"
: "=f" (ret)
: "f" (__m1), "f" (__m2), "i" (__pos)
);
return ret;
}

14
pixman/pixman-mmx.c
View File

@ -182,10 +182,12 @@ typedef struct
mmxdatafield mmx_565_r;
mmxdatafield mmx_565_g;
mmxdatafield mmx_565_b;
#ifndef USE_LOONGSON_MMI
mmxdatafield mmx_mask_0;
mmxdatafield mmx_mask_1;
mmxdatafield mmx_mask_2;
mmxdatafield mmx_mask_3;
#endif
mmxdatafield mmx_full_alpha;
mmxdatafield mmx_4x0101;
} mmx_data_t;
@ -207,10 +209,12 @@ static const mmx_data_t c =
MMXDATA_INIT (.mmx_565_r, 0x000000f800000000),
MMXDATA_INIT (.mmx_565_g, 0x0000000000fc0000),
MMXDATA_INIT (.mmx_565_b, 0x00000000000000f8),
#ifndef USE_LOONGSON_MMI
MMXDATA_INIT (.mmx_mask_0, 0xffffffffffff0000),
MMXDATA_INIT (.mmx_mask_1, 0xffffffff0000ffff),
MMXDATA_INIT (.mmx_mask_2, 0xffff0000ffffffff),
MMXDATA_INIT (.mmx_mask_3, 0x0000ffffffffffff),
#endif
MMXDATA_INIT (.mmx_full_alpha, 0x00ff000000000000),
MMXDATA_INIT (.mmx_4x0101, 0x0101010101010101),
};
@ -528,6 +532,15 @@ pack_565 (__m64 pixel, __m64 target, int pos)
g = _mm_and_si64 (p, MC (565_g));
b = _mm_and_si64 (p, MC (565_b));
#ifdef USE_LOONGSON_MMI
r = shift (r, -(32 - 8));
g = shift (g, -(16 - 3));
b = shift (b, -(0 + 3));
p = _mm_or_si64 (r, g);
p = _mm_or_si64 (p, b);
return loongson_insert_pi16 (t, p, pos);
#else
r = shift (r, -(32 - 8) + pos * 16);
g = shift (g, -(16 - 3) + pos * 16);
b = shift (b, -(0 + 3) + pos * 16);
@ -545,6 +558,7 @@ pack_565 (__m64 pixel, __m64 target, int pos)
p = _mm_or_si64 (g, p);
return _mm_or_si64 (b, p);
#endif
}
#ifndef _MSC_VER