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Diffstat (limited to 'pixman/pixman/loongson-mmintrin.h')
-rw-r--r-- | pixman/pixman/loongson-mmintrin.h | 273 |
1 files changed, 273 insertions, 0 deletions
diff --git a/pixman/pixman/loongson-mmintrin.h b/pixman/pixman/loongson-mmintrin.h new file mode 100644 index 000000000..8295ba01c --- /dev/null +++ b/pixman/pixman/loongson-mmintrin.h @@ -0,0 +1,273 @@ +/* The gcc-provided loongson intrinsic functions are way too fucking broken + * to be of any use, otherwise I'd use them. + * + * - The hardware instructions are very similar to MMX or iwMMXt. Certainly + * close enough that they could have implemented the _mm_*-style intrinsic + * interface and had a ton of optimized code available to them. Instead they + * implemented something much, much worse. + * + * - pshuf takes a dead first argument, causing extra instructions to be + * generated. + * + * - There are no 64-bit shift or logical intrinsics, which means you have + * to implement them with inline assembly, but this is a nightmare because + * gcc doesn't understand that the integer vector datatypes are actually in + * floating-point registers, so you end up with braindead code like + * + * punpcklwd $f9,$f9,$f5 + * dmtc1 v0,$f8 + * punpcklwd $f19,$f19,$f5 + * dmfc1 t9,$f9 + * dmtc1 v0,$f9 + * dmtc1 t9,$f20 + * dmfc1 s0,$f19 + * punpcklbh $f20,$f20,$f2 + * + * where crap just gets copied back and forth between integer and floating- + * point registers ad nauseum. + * + * Instead of trying to workaround the problems from these crap intrinsics, I + * just implement the _mm_* intrinsics needed for pixman-mmx.c using inline + * assembly. + */ + +#include <stdint.h> + +/* vectors are stored in 64-bit floating-point registers */ +typedef double __m64; +/* having a 32-bit datatype allows us to use 32-bit loads in places like load8888 */ +typedef float __m32; + +extern __inline __m64 __attribute__((__gnu_inline__, __always_inline__, __artificial__)) +_mm_setzero_si64 (void) +{ + return 0.0; +} + +extern __inline __m64 __attribute__((__gnu_inline__, __always_inline__, __artificial__)) +_mm_adds_pu16 (__m64 __m1, __m64 __m2) +{ + __m64 ret; + asm("paddush %0, %1, %2\n\t" + : "=f" (ret) + : "f" (__m1), "f" (__m2) + ); + return ret; +} + +extern __inline __m64 __attribute__((__gnu_inline__, __always_inline__, __artificial__)) +_mm_adds_pu8 (__m64 __m1, __m64 __m2) +{ + __m64 ret; + asm("paddusb %0, %1, %2\n\t" + : "=f" (ret) + : "f" (__m1), "f" (__m2) + ); + return ret; +} + +extern __inline __m64 __attribute__((__gnu_inline__, __always_inline__, __artificial__)) +_mm_and_si64 (__m64 __m1, __m64 __m2) +{ + __m64 ret; + asm("and %0, %1, %2\n\t" + : "=f" (ret) + : "f" (__m1), "f" (__m2) + ); + return ret; +} + +extern __inline void __attribute__((__gnu_inline__, __always_inline__, __artificial__)) +_mm_empty (void) +{ + +} + +extern __inline __m64 __attribute__((__gnu_inline__, __always_inline__, __artificial__)) +_mm_madd_pi16 (__m64 __m1, __m64 __m2) +{ + __m64 ret; + asm("pmaddhw %0, %1, %2\n\t" + : "=f" (ret) + : "f" (__m1), "f" (__m2) + ); + return ret; +} + +extern __inline __m64 __attribute__((__gnu_inline__, __always_inline__, __artificial__)) +_mm_mulhi_pu16 (__m64 __m1, __m64 __m2) +{ + __m64 ret; + asm("pmulhuh %0, %1, %2\n\t" + : "=f" (ret) + : "f" (__m1), "f" (__m2) + ); + return ret; +} + +extern __inline __m64 __attribute__((__gnu_inline__, __always_inline__, __artificial__)) +_mm_mullo_pi16 (__m64 __m1, __m64 __m2) +{ + __m64 ret; + asm("pmullh %0, %1, %2\n\t" + : "=f" (ret) + : "f" (__m1), "f" (__m2) + ); + return ret; +} + +extern __inline __m64 __attribute__((__gnu_inline__, __always_inline__, __artificial__)) +_mm_or_si64 (__m64 __m1, __m64 __m2) +{ + __m64 ret; + asm("or %0, %1, %2\n\t" + : "=f" (ret) + : "f" (__m1), "f" (__m2) + ); + return ret; +} + +extern __inline __m64 __attribute__((__gnu_inline__, __always_inline__, __artificial__)) +_mm_packs_pu16 (__m64 __m1, __m64 __m2) +{ + __m64 ret; + asm("packushb %0, %1, %2\n\t" + : "=f" (ret) + : "f" (__m1), "f" (__m2) + ); + return ret; +} + +extern __inline __m64 __attribute__((__gnu_inline__, __always_inline__, __artificial__)) +_mm_shuffle_pi16 (__m64 __m, int64_t __n) +{ + __m64 ret; + asm("pshufh %0, %1, %2\n\t" + : "=f" (ret) + : "f" (__m), "f" (*(__m64 *)&__n) + ); + return ret; +} + +extern __inline __m64 __attribute__((__gnu_inline__, __always_inline__, __artificial__)) +_mm_slli_si64 (__m64 __m, int64_t __count) +{ + __m64 ret; + asm("dsll %0, %1, %2\n\t" + : "=f" (ret) + : "f" (__m), "f" (*(__m64 *)&__count) + ); + return ret; +} + +extern __inline __m64 __attribute__((__gnu_inline__, __always_inline__, __artificial__)) +_mm_srli_pi16 (__m64 __m, int64_t __count) +{ + __m64 ret; + asm("psrlh %0, %1, %2\n\t" + : "=f" (ret) + : "f" (__m), "f" (*(__m64 *)&__count) + ); + return ret; +} + +extern __inline __m64 __attribute__((__gnu_inline__, __always_inline__, __artificial__)) +_mm_srli_si64 (__m64 __m, int64_t __count) +{ + __m64 ret; + asm("dsrl %0, %1, %2\n\t" + : "=f" (ret) + : "f" (__m), "f" (*(__m64 *)&__count) + ); + return ret; +} + +extern __inline __m64 __attribute__((__gnu_inline__, __always_inline__, __artificial__)) +_mm_unpackhi_pi8 (__m64 __m1, __m64 __m2) +{ + __m64 ret; + asm("punpckhbh %0, %1, %2\n\t" + : "=f" (ret) + : "f" (__m1), "f" (__m2) + ); + return ret; +} + +extern __inline __m64 __attribute__((__gnu_inline__, __always_inline__, __artificial__)) +_mm_unpackhi_pi16 (__m64 __m1, __m64 __m2) +{ + __m64 ret; + asm("punpckhhw %0, %1, %2\n\t" + : "=f" (ret) + : "f" (__m1), "f" (__m2) + ); + return ret; +} + +extern __inline __m64 __attribute__((__gnu_inline__, __always_inline__, __artificial__)) +_mm_unpacklo_pi8 (__m64 __m1, __m64 __m2) +{ + __m64 ret; + asm("punpcklbh %0, %1, %2\n\t" + : "=f" (ret) + : "f" (__m1), "f" (__m2) + ); + return ret; +} + +/* Since punpcklbh doesn't care about the high 32-bits, we use the __m32 datatype which + * allows load8888 to use 32-bit loads */ +extern __inline __m64 __attribute__((__gnu_inline__, __always_inline__, __artificial__)) +_mm_unpacklo_pi8_f (__m32 __m1, __m64 __m2) +{ + __m64 ret; + asm("punpcklbh %0, %1, %2\n\t" + : "=f" (ret) + : "f" (__m1), "f" (__m2) + ); + return ret; +} + +extern __inline __m64 __attribute__((__gnu_inline__, __always_inline__, __artificial__)) +_mm_unpacklo_pi16 (__m64 __m1, __m64 __m2) +{ + __m64 ret; + asm("punpcklhw %0, %1, %2\n\t" + : "=f" (ret) + : "f" (__m1), "f" (__m2) + ); + return ret; +} + +extern __inline __m64 __attribute__((__gnu_inline__, __always_inline__, __artificial__)) +_mm_xor_si64 (__m64 __m1, __m64 __m2) +{ + __m64 ret; + asm("xor %0, %1, %2\n\t" + : "=f" (ret) + : "f" (__m1), "f" (__m2) + ); + return ret; +} + +extern __inline __m64 __attribute__((__gnu_inline__, __always_inline__, __artificial__)) +loongson_extract_pi16 (__m64 __m, int64_t __pos) +{ + __m64 ret; + asm("pextrh %0, %1, %2\n\t" + : "=f" (ret) + : "f" (__m), "f" (*(__m64 *)&__pos) + ); + 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; +} |