| ; This test case was reduced from MultiSource/Applications/hbd. It makes sure |
| ; that folding doesn't happen in case a zext is applied where a sext should have |
| ; been when a setcc is used with two casts. |
| ; RUN: llvm-as < %s | opt -instcombine | llvm-dis | \ |
| ; RUN: not grep {br i1 false} |
| ; END. |
| |
| define i32 @bug(i8 %inbuff) { |
| entry: |
| %tmp = bitcast i8 %inbuff to i8 ; <i8> [#uses=1] |
| %tmp.upgrd.1 = sext i8 %tmp to i32 ; <i32> [#uses=3] |
| %tmp.upgrd.2 = icmp eq i32 %tmp.upgrd.1, 1 ; <i1> [#uses=1] |
| br i1 %tmp.upgrd.2, label %cond_true, label %cond_next |
| |
| cond_true: ; preds = %entry |
| br label %bb |
| |
| cond_next: ; preds = %entry |
| %tmp3 = icmp eq i32 %tmp.upgrd.1, -1 ; <i1> [#uses=1] |
| br i1 %tmp3, label %cond_true4, label %cond_next5 |
| |
| cond_true4: ; preds = %cond_next |
| br label %bb |
| |
| cond_next5: ; preds = %cond_next |
| %tmp7 = icmp sgt i32 %tmp.upgrd.1, 1 ; <i1> [#uses=1] |
| br i1 %tmp7, label %cond_true8, label %cond_false |
| |
| cond_true8: ; preds = %cond_next5 |
| br label %cond_next9 |
| |
| cond_false: ; preds = %cond_next5 |
| br label %cond_next9 |
| |
| cond_next9: ; preds = %cond_false, %cond_true8 |
| %iftmp.1.0 = phi i32 [ 42, %cond_true8 ], [ 23, %cond_false ] ; <i32> [#uses=1] |
| br label %return |
| |
| bb: ; preds = %cond_true4, %cond_true |
| br label %return |
| |
| return: ; preds = %bb, %cond_next9 |
| %retval.0 = phi i32 [ 17, %bb ], [ %iftmp.1.0, %cond_next9 ] ; <i32> [#uses=1] |
| ret i32 %retval.0 |
| } |
| |
