/* { dg-do compile } */ | |
/* { dg-options "-O2 -fdump-tree-fre1-details" } */ | |
int x[1024]; | |
int foo (int a, int s, unsigned int k) | |
{ | |
int i = a, j = a; | |
int sum = 0; | |
do | |
{ | |
sum += x[i]; | |
sum += x[j]; | |
i += s; | |
j += s; | |
} | |
while (k--); | |
return sum; | |
} | |
/* We want to remove the redundant induction variable and thus its PHI node. */ | |
/* { dg-final { scan-tree-dump "Removing dead stmt \[^\r\n\]*PHI" "fre1" } } */ |