| ; This testcase contains a entire loop that should be removed. The only thing |
| ; left is the store instruction in BB0. The problem this testcase was running |
| ; into was that when the reg109 PHI was getting zero predecessors, it was |
| ; removed even though there were uses still around. Now the uses are filled |
| ; in with a dummy value before the PHI is deleted. |
| ; |
| ; RUN: opt < %s -S -passes=adce | grep bb1 |
| ; RUN: opt < %s -S -passes=adce -adce-remove-loops | FileCheck %s |
| |
| %node_t = type { ptr, ptr, ptr, ptr, ptr, i32, i32 } |
| |
| define void @localize_local(ptr %nodelist) { |
| bb0: |
| %nodelist.upgrd.1 = alloca ptr ; <ptr> [#uses=2] |
| store ptr %nodelist, ptr %nodelist.upgrd.1 |
| br label %bb1 |
| |
| bb1: ; preds = %bb0 |
| %reg107 = load ptr, ptr %nodelist.upgrd.1 ; <ptr> [#uses=2] |
| %cond211 = icmp eq ptr %reg107, null ; <i1> [#uses=1] |
| ; CHECK: br label %bb3 |
| br i1 %cond211, label %bb3, label %bb2 |
| |
| bb2: ; preds = %bb2, %bb1 |
| %reg109 = phi ptr [ %reg110, %bb2 ], [ %reg107, %bb1 ] ; <ptr> [#uses=1] |
| %reg212 = getelementptr %node_t, ptr %reg109, i64 0, i32 1 ; <ptr> [#uses=1] |
| %reg110 = load ptr, ptr %reg212 ; <ptr> [#uses=2] |
| %cond213 = icmp ne ptr %reg110, null ; <i1> [#uses=1] |
| ; CHECK: br label %bb3 |
| br i1 %cond213, label %bb2, label %bb3 |
| |
| bb3: ; preds = %bb2, %bb1 |
| ret void |
| } |
| |
