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/* { dg-do compile } */
/* { dg-options "-O1 -fno-tree-dominator-opts -fdump-tree-ccp" } */
extern void link_error (void);
/* tests to check if some identities can be proven by the compiler */
void test6 (unsigned int a)
{
if (a != a)
link_error ();
}
void test66 (unsigned int a)
{
unsigned int b = a;
if (b != a)
link_error ();
}
void test666 (unsigned int a)
{
unsigned int b = a - 32;
if (b != (a - 32))
link_error ();
}
void test6666 (unsigned int a)
{
if (a-32 != a-32)
link_error ();
}
/*
This should be moved to a place that scans the copyprop dump
*/
void test66666 (int a)
{
int b = a;
if (a > 25)
{
int c = b;
if (c < 30)
{
int d = c;
if (d != a)
link_error ();
}
}
}
/* There should be not link_error calls, if there is any the
optimization has failed */
/* { dg-final { scan-tree-dump-times "link_error" 0 "ccp"} } */
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