gcc/testsuite/gcc.target/ia64/mfused-madd-vect.c

   1 /* { dg-do compile */
   2 /* { dg-options "-O2 -ftree-vectorize" } */
   3 /* { dg-final { scan-assembler-not "fpmpy" } } */
   4
   5 /* fpma and fpms will show in either way because there are no
   6    specific vector add/sub instructions.  So we just check for fpmpy.  */
   7
   8 #define N 16
   9 extern void bar(float *, float *, float *, float *);
  10 void foo()
  11 {
  12         int i;
  13         float a[N], b[N], c[N], d[N];
  14         bar(a,b,c,d);
  15         for (i = 0; i < N; i++) {
  16                 a[i] = b[i] + c[i] * d[i];
  17         }
  18         bar(a,b,c,d);
  19 #if 0
  20         for (i = 0; i < N; i++) {
  21                 a[i] = b[i] - c[i] * d[i];
  22         }
  23         bar(a,b,c,d);
  24 #endif
  25         for (i = 0; i < N; i++) {
  26                 a[i] = b[i] * c[i] + d[i];
  27         }
  28         bar(a,b,c,d);
  29         for (i = 0; i < N; i++) {
  30                 a[i] = b[i] * c[i] - d[i];
  31         }
  32         bar(a,b,c,d);
  33 }