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/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-optimized" } */
/* Check that the initial values are honored when necessary. */
void link_error (void);
/* The call to link_error cannot be eliminated in this case. */
void test1 (int param1, int param2, int x)
{
if (param1)
x = 3;
if (param2)
if (x != 3)
link_error ();
}
/* The call to link_error cannot be eliminated in this case. */
int global;
void test2 (int param1, int param2)
{
if (param1)
global = 3;
if (param2)
if (global != 3)
link_error ();
}
/* In this case, we can eliminate the call, as unless "local" is set
to 3, its value is undefined. */
void test3 (int param1, int param2)
{
int local;
if (param1)
local = 3;
if (param2)
if (local != 3)
link_error ();
}
/* { dg-final { scan-tree-dump-times "link_error" 2 "optimized" } } */
/* { dg-final { cleanup-tree-dump "optimized" } } */
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