gcc/testsuite/gcc.target/arm/wmul-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -march=armv6t2" } */
   3
   4 int mac(const short *a, const short *b, int sqr, int *sum)
   5 {
   6   int i;
   7   int dotp = *sum;
   8
   9   for (i = 0; i < 150; i++) {
  10     dotp += b[i] * a[i];
  11     sqr += b[i] * b[i];
  12   }
  13
  14   *sum = dotp;
  15   return sqr;
  16 }
  17
  18 /* { dg-final { scan-assembler-times "smlabb" 2 } } */