| ; RUN: opt < %s -simplifycfg -S | \ |
| ; RUN: not grep select |
| |
| ;; The PHI node in this example should not be turned into a select, as we are |
| ;; not able to ifcvt the entire block. As such, converting to a select just |
| ;; introduces inefficiency without saving copies. |
| |
| define i32 @bar(i1 %C) { |
| entry: |
| br i1 %C, label %then, label %endif |
| then: ; preds = %entry |
| %tmp.3 = call i32 @qux( ) ; <i32> [#uses=0] |
| br label %endif |
| endif: ; preds = %then, %entry |
| %R = phi i32 [ 123, %entry ], [ 12312, %then ] ; <i32> [#uses=1] |
| ;; stuff to disable tail duplication |
| call i32 @qux( ) ; <i32>:0 [#uses=0] |
| call i32 @qux( ) ; <i32>:1 [#uses=0] |
| call i32 @qux( ) ; <i32>:2 [#uses=0] |
| call i32 @qux( ) ; <i32>:3 [#uses=0] |
| call i32 @qux( ) ; <i32>:4 [#uses=0] |
| call i32 @qux( ) ; <i32>:5 [#uses=0] |
| call i32 @qux( ) ; <i32>:6 [#uses=0] |
| ret i32 %R |
| } |
| |
| declare i32 @qux() |
