| ; Do not promote null value because it may be unsafe to do so. |
| ; RUN: opt < %s -licm -S | not grep promoted |
| |
| define i32 @f(i32 %foo, i32 %bar, i32 %com) { |
| entry: |
| %tmp2 = icmp eq i32 %foo, 0 ; <i1> [#uses=1] |
| br i1 %tmp2, label %cond_next, label %cond_true |
| |
| cond_true: ; preds = %entry |
| br label %return |
| |
| cond_next: ; preds = %entry |
| br label %bb |
| |
| bb: ; preds = %bb15, %cond_next |
| switch i32 %bar, label %bb15 [ |
| i32 1, label %bb6 |
| ] |
| |
| bb6: ; preds = %bb |
| %tmp8 = icmp eq i32 %com, 0 ; <i1> [#uses=1] |
| br i1 %tmp8, label %cond_next14, label %cond_true11 |
| |
| cond_true11: ; preds = %bb6 |
| br label %return |
| |
| cond_next14: ; preds = %bb6 |
| store i8 0, i8* null |
| br label %bb15 |
| |
| bb15: ; preds = %cond_next14, %bb |
| br label %bb |
| |
| return: ; preds = %cond_true11, %cond_true |
| %storemerge = phi i32 [ 0, %cond_true ], [ undef, %cond_true11 ] ; <i32> [#uses=1] |
| ret i32 %storemerge |
| } |
| |
| define i32 @kdMain() { |
| entry: |
| %tmp1 = call i32 @f( i32 0, i32 1, i32 1 ) ; <i32> [#uses=0] |
| call void @exit( i32 0 ) |
| unreachable |
| } |
| |
| declare void @exit(i32) |
