| ; This testcase was extracted from the gzip SPEC benchmark |
| ; |
| ; RUN: opt < %s -adce |
| |
| @bk = external global i32 ; <i32*> [#uses=2] |
| @hufts = external global i32 ; <i32*> [#uses=1] |
| |
| define i32 @inflate() { |
| bb0: |
| br label %bb2 |
| |
| bb2: ; preds = %bb6, %bb0 |
| %reg128 = phi i32 [ %reg130, %bb6 ], [ 0, %bb0 ] ; <i32> [#uses=2] |
| br i1 true, label %bb4, label %bb3 |
| |
| bb3: ; preds = %bb2 |
| br label %UnifiedExitNode |
| |
| bb4: ; preds = %bb2 |
| %reg117 = load i32* @hufts ; <i32> [#uses=2] |
| %cond241 = icmp ule i32 %reg117, %reg128 ; <i1> [#uses=1] |
| br i1 %cond241, label %bb6, label %bb5 |
| |
| bb5: ; preds = %bb4 |
| br label %bb6 |
| |
| bb6: ; preds = %bb5, %bb4 |
| %reg130 = phi i32 [ %reg117, %bb5 ], [ %reg128, %bb4 ] ; <i32> [#uses=1] |
| br i1 false, label %bb2, label %bb7 |
| |
| bb7: ; preds = %bb6 |
| %reg126 = load i32* @bk ; <i32> [#uses=1] |
| %cond247 = icmp ule i32 %reg126, 7 ; <i1> [#uses=1] |
| br i1 %cond247, label %bb9, label %bb8 |
| |
| bb8: ; preds = %bb8, %bb7 |
| %reg119 = load i32* @bk ; <i32> [#uses=1] |
| %cond256 = icmp ugt i32 %reg119, 7 ; <i1> [#uses=1] |
| br i1 %cond256, label %bb8, label %bb9 |
| |
| bb9: ; preds = %bb8, %bb7 |
| br label %UnifiedExitNode |
| |
| UnifiedExitNode: ; preds = %bb9, %bb3 |
| %UnifiedRetVal = phi i32 [ 7, %bb3 ], [ 0, %bb9 ] ; <i32> [#uses=1] |
| ret i32 %UnifiedRetVal |
| } |
| |
