gcc/testsuite/gcc.target/i386/extract-insert-combining.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-msse4.2 -O3" } */
   3 /* { dg-final { scan-assembler-times "(?:vmovd|movd)\[ \\t\]+\[^\{\n\]*%xmm\[0-9\]" 3 } } */
   4 /* { dg-final { scan-assembler-times "(?:vpaddd|paddd)\[ \\t\]+\[^\{\n\]*%xmm\[0-9\]" 2 } } */
   5 /* { dg-final { scan-assembler-times "(?:vpinsrd|pinsrd)\[ \\t\]+\[^\{\n\]*%xmm\[0-9\]" 1 } } */
   6 /* { dg-final { scan-assembler-not "vmovss" } } */
   7
   8 #include <immintrin.h>
   9
  10 int
  11 main (int a, int b)
  12 {
  13   int res;
  14
  15   __m128i xa, xb, xres;
  16
  17   xa = _mm_insert_epi32 (xa, a, 0);
  18   xb = _mm_insert_epi32 (xb, b, 0);
  19
  20   xres = _mm_add_epi32 (xa, xb);
  21
  22   res = _mm_extract_epi32 (xres, 0);
  23
  24   xres = _mm_insert_epi32 (xres, res, 0);
  25   xb   = _mm_insert_epi32 (xb, b, 0);
  26
  27   xres = _mm_add_epi32 (xres, xb);
  28
  29   res = _mm_extract_epi32 (xres, 0);
  30
  31   return res;
  32 }
  33