1 ; RUN: lli %s > /dev/null 2 3 ; test phi node 4 @Y = global i32 6 ; <i32*> [#uses=1] 5 6 define void @blah(i32* %X) { 7 ; <label>:0 8 br label %T 9 T: ; preds = %Dead, %0 10 phi i32* [ %X, %0 ], [ @Y, %Dead ] ; <i32*>:1 [#uses=0] 11 ret void 12 Dead: ; No predecessors! 13 br label %T 14 } 15 16 define i32 @test(i1 %C) { 17 ; <label>:0 18 br i1 %C, label %T, label %T 19 T: ; preds = %0, %0 20 %X = phi i32 [ 123, %0 ], [ 123, %0 ] ; <i32> [#uses=1] 21 ret i32 %X 22 } 23 24 define i32 @main() { 25 ; <label>:0 26 br label %Test 27 Test: ; preds = %Dead, %0 28 %X = phi i32 [ 0, %0 ], [ %Y, %Dead ] ; <i32> [#uses=1] 29 ret i32 %X 30 Dead: ; No predecessors! 31 %Y = ashr i32 12, 4 ; <i32> [#uses=1] 32 br label %Test 33 } 34 35
