| ; 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) |