| /* PR100112 and dups. */ |
| /* { dg-do compile } */ |
| /* { dg-options "-O2 -fdump-tree-fre1-details -fdump-tree-optimized" } */ |
| |
| int *c, *b; |
| void foo() |
| { |
| int *tem = b; |
| *tem = 0; |
| int *footem = c; |
| c = footem; |
| } |
| |
| void bar() |
| { |
| int *tem = b; |
| int *bartem = c; |
| *tem = 0; |
| c = bartem; |
| } |
| |
| /* We should elide the redundant store in foo, in bar it is not redundant since |
| the *tem = 0 store might alias. */ |
| /* { dg-final { scan-tree-dump "Deleted redundant store c = footem" "fre1" } } */ |
| /* { dg-final { scan-tree-dump "c = bartem" "optimized" } } */ |
