mirror of git://gcc.gnu.org/git/gcc.git
33 lines
548 B
C
33 lines
548 B
C
/* 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" } } */
|