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/* Verify straight-line strength reduction for a candidate with a basis
hidden by a phi dependence and having an unknown stride. Variation
using negative increments. */
/* { dg-do compile } */
/* { dg-options "-O3 -fdump-tree-optimized" } */
int
f (int s, int c, int i)
{
int a1, a2, a3, x1, x2, x3, x;
a1 = i * s;
x1 = c + a1;
i = i - 2;
a2 = i * s;
x2 = c + a2;
if (x2 > 6)
i = i - 2;
i = i - 2;
a3 = i * s;
x3 = c + a3;
x = x1 + x2 + x3;
return x;
}
/* { dg-final { scan-tree-dump-times " \\* s" 1 "optimized" } } */
/* { dg-final { scan-tree-dump-times " \\* 2" 1 "optimized" } } */
/* { dg-final { cleanup-tree-dump "optimized" } } */
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