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/* PR100112 and dups. */
/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-fre1-details -fdump-tree-optimized" } */
int *c, *b;
void foo()
{
int *tem = b;
*tem = 0;
int *footem = c;
c = footem;
}
void bar()
{
int *tem = b;
int *bartem = c;
*tem = 0;
c = bartem;
}
/* We should elide the redundant store in foo, in bar it is not redundant since
the *tem = 0 store might alias. */
/* { dg-final { scan-tree-dump "Deleted redundant store c = footem" "fre1" } } */
/* { dg-final { scan-tree-dump "c = bartem" "optimized" } } */
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