| /* PR tree-optimization/21001 |
| VRP did not insert ASSERT_EXPRs when the variable tested in a |
| COND_EXPR is a single-use variable. By propagating the definition |
| of the single-use variable into the COND_EXPR, we can get useful |
| range information out of the conditional. */ |
| |
| /* { dg-do compile } */ |
| /* { dg-options "-O2 -fno-tree-dominator-opts -fdump-tree-vrp-details" } */ |
| |
| int |
| foo (int a) |
| { |
| int b = a != 0; |
| if (b) |
| if (a != 0) |
| return 1; |
| return 0; |
| } |
| |
| /* { dg-final { scan-tree-dump-times "Folding predicate" 1 "vrp"} } */ |
| /* { dg-final { cleanup-tree-dump "vrp" } } */ |
