| /* 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" } */ |
| /* LLVM LOCAL test not applicable */ |
| /* { dg-require-fdump "" } */ |
| |
| 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" } } */ |