| /* 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" } } */ |