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