| /* { dg-do compile } */ | |
| /* { dg-options "-O2 -fno-tree-forwprop -fno-tree-ccp -fdump-tree-ealias-details" } */ | |
| extern void abort (void); | |
| struct X { | |
| int *p; | |
| int *q; | |
| int *r; | |
| }; | |
| int __attribute__((noinline)) | |
| foo(int i, int j, int k, int off) | |
| { | |
| struct X x; | |
| int **p, *q; | |
| x.p = &i; | |
| x.q = &j; | |
| x.r = &k; | |
| p = &x.q; | |
| p -= 1; | |
| /* *p points to { i } */ | |
| q = *p; | |
| return *q; | |
| } | |
| /* { dg-final { scan-tree-dump "q_. = { i }" "ealias" } } */ |