/* Straight-line strength reduction control flow variation with incr = -1. */ /* { dg-do compile } */ /* { dg-options "-O3 -fdump-tree-optimized" } */ int f (int n, int c, int s) { int a1, a2, a3, a4, x1, x2, x3, x4; a1 = 4 * s; x1 = c + a1; x2 = x3 = x4 = c; if (n > 64) { a2 = 3 * s; x2 = c + a2; a3 = 2 * s; x3 = c + a3; } else { a4 = 3 * s; x4 = c + a4; } return x1 + x2 + x3 + x4; } /* { dg-final { scan-tree-dump-times " \\* " 1 "optimized" } } */ /* { dg-final { cleanup-tree-dump "optimized" } } */