gcc/testsuite/gcc.target/i386/pr37191.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O1 -mmmx" } */
   3 /* { dg-skip-if "no stdint" { vxworks_kernel } } */
   4
   5 #include <mmintrin.h>
   6 #include <stddef.h>
   7 #include <stdint.h>
   8
   9 extern const uint64_t ff_bone;
  10
  11 static inline void transpose4x4(uint8_t *dst, uint8_t *src, ptrdiff_t dst_stride, ptrdiff_t src_stride) {
  12     __m64 row0 = _mm_cvtsi32_si64(*(unsigned*)(src + (0 * src_stride)));
  13     __m64 row1 = _mm_cvtsi32_si64(*(unsigned*)(src + (1 * src_stride)));
  14     __m64 row2 = _mm_cvtsi32_si64(*(unsigned*)(src + (2 * src_stride)));
  15     __m64 row3 = _mm_cvtsi32_si64(*(unsigned*)(src + (3 * src_stride)));
  16     __m64 tmp0 = _mm_unpacklo_pi8(row0, row1);
  17     __m64 tmp1 = _mm_unpacklo_pi8(row2, row3);
  18     __m64 row01 = _mm_unpacklo_pi16(tmp0, tmp1);
  19     __m64 row23 = _mm_unpackhi_pi16(tmp0, tmp1);
  20     *((unsigned*)(dst + (0 * dst_stride))) = _mm_cvtsi64_si32(row01);
  21     *((unsigned*)(dst + (1 * dst_stride))) = _mm_cvtsi64_si32(_mm_unpackhi_pi32(row01, row01));
  22     *((unsigned*)(dst + (2 * dst_stride))) = _mm_cvtsi64_si32(row23);
  23     *((unsigned*)(dst + (3 * dst_stride))) = _mm_cvtsi64_si32(_mm_unpackhi_pi32(row23, row23));
  24 }
  25
  26 static inline void h264_loop_filter_chroma_intra_mmx2(uint8_t *pix, int stride, int alpha1, int beta1)
  27 {
  28     asm volatile(
  29         ""
  30         :: "r"(pix-2*stride), "r"(pix), "r"((long)stride),
  31            "m"(alpha1), "m"(beta1), "m"(ff_bone)
  32     );
  33 }
  34
  35 void h264_h_loop_filter_chroma_intra_mmx2(uint8_t *pix, int stride, int alpha, int beta)
  36 {
  37
  38     uint8_t trans[8*4] __attribute__ ((aligned (8)));
  39     transpose4x4(trans, pix-2, 8, stride);
  40     transpose4x4(trans+4, pix-2+4*stride, 8, stride);
  41     h264_loop_filter_chroma_intra_mmx2(trans+2*8, 8, alpha-1, beta-1);
  42     transpose4x4(pix-2, trans, stride, 8);
  43     transpose4x4(pix-2+4*stride, trans+4, stride, 8);
  44 }