/* 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" } } */