/* { dg-do compile } */ /* { dg-options "-O2 -funswitch-loops -fdump-tree-unswitch-optimized" } */ int foo(double *a, double *b, double *c, double *d, double *r, int size, int order) { for (int i = 0; i < size; i++) { double tmp; if (order == 1) tmp = -8 * a[i]; else tmp = -4 * b[i]; double x = 3 * tmp + d[i] + tmp; if (order == 1) x += 2; double y = 3.4f * tmp + d[i]; r[i] = x + y; } return 0; } /* { dg-final { scan-tree-dump-times "unswitching loop . on .if. with condition: order.* == 1" 1 "unswitch" } } */