/* A test for strength reduction of ivs with nonconstant step. */ /* { dg-do compile } */ /* { dg-options "-O1 -fdump-tree-optimized" } */ int bar (void); int a[100]; void xxx (void) { int iter, step = bar (); for (iter = 0; iter < 10; iter++) a[iter * step] = bar (); } /* The array access should be strength reduced. But to determine the value of the step, we need to calculate step * sizeof (int), thus we need to be a bit careful about which multiplications we disallow. */ /* { dg-final { scan-tree-dump-times "step \\* \[^0-9\]" 0 "optimized" } } */ /* { dg-final { scan-tree-dump-times "\[^0-9\] \\* step" 0 "optimized" } } */ /* { dg-final { cleanup-tree-dump "optimized" } } */