gcc/testsuite/gcc.target/i386/pr22432.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -mmmx" } */
   3 /* { dg-final { scan-assembler-not "paddb" } } */
   4
   5 typedef int v2si __attribute__ ((__vector_size__ (8)));
   6 typedef short v4hi __attribute__ ((__vector_size__ (8)));
   7 typedef char v8qi __attribute__ ((__vector_size__ (8)));
   8
   9 int
  10 foo (unsigned int *a, unsigned int *b)
  11 {
  12   long long i, j, k;
  13
  14   i = (long long) __builtin_ia32_vec_init_v2si (*a, 0);
  15   j = (long long) __builtin_ia32_vec_init_v2si (*b, 0);
  16   i = (long long) __builtin_ia32_punpcklbw ((v8qi) i, (v8qi) 0ll);
  17   j = (long long) __builtin_ia32_punpcklbw ((v8qi) j, (v8qi) 0ll);
  18   k = (long long) __builtin_ia32_paddw ((v4hi) i, (v4hi) j);
  19   return __builtin_ia32_vec_ext_v2si ((v2si) k, 0);
  20 }