| /* PR tree-optimization/21658 | |
| CCP did not propagate an ADDR_EXPR far enough, preventing the "if" | |
| statement below from being folded. */ | |
| /* { dg-do compile } */ | |
| /* { dg-options "-O2 -fno-tree-dominator-opts -fdump-tree-ccp-details" } */ | |
| void link_error (void); | |
| void | |
| f (void) | |
| { | |
| int a[10]; | |
| int *p = &a[5]; | |
| int *q = p - 1; | |
| if (q != &a[4]) | |
| link_error (); | |
| } | |
| /* { dg-final { scan-tree-dump-times "Folded statement: if " 1 "ccp"} } */ | |
| /* { dg-final { cleanup-tree-dump "ccp" } } */ |