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/* Regression test for PR middle-end/23584 */
/* Verify that dereferencing an absolute address inside of a function
makes that function impure. */
/* { dg-do compile } */
/* { dg-options "-O1 -fdump-ipa-pure-const" } */
int test1 (void)
{
return * (volatile int *) 0x1234;
}
int test2 (void)
{
int local = * (volatile int *) 0x1234;
return local;
}
/* { dg-final { scan-ipa-dump-not "found to be pure: test1" "pure-const" } } */
/* { dg-final { scan-ipa-dump-not "found to be pure: test2" "pure-const" } } */
/* { dg-final { cleanup-ipa-dump "pure-const" } } */
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