| /* { dg-do compile } */ |
| /* { dg-options "-O2 -fdump-tree-evrp" } */ |
| |
| void bar(char *); |
| |
| /* Ensure that PTR1 = PTR2 + OFF properly picks up the zero and non-zero |
| properties if PTR1 and PTR2 are known equal or non-equal. */ |
| |
| void foo1 (char *p, char *pp, int off) |
| { |
| char *q = p + off; |
| if (q != p) |
| { |
| if (off == 0) |
| bar (q); |
| } |
| else |
| { |
| if (off != 0) |
| bar (p); |
| } |
| } |
| |
| void foo2 (char *p, char *pp, int off) |
| { |
| char *q = p + off; |
| if (q == p) |
| { |
| if (off != 0) |
| bar (p); |
| } |
| else |
| { |
| if (off == 0) |
| bar (q); |
| } |
| } |
| |
| /* { dg-final { scan-tree-dump-not "bar" "evrp" } } */ |
