1 ; RUN: opt < %s -simplifycfg -S | \ 2 ; RUN: not grep "icmp eq" 3 4 ; Check that simplifycfg deletes a dead 'seteq' instruction when it 5 ; folds a conditional branch into a switch instruction. 6 7 declare void @foo() 8 9 declare void @bar() 10 11 define void @testcfg(i32 %V) { 12 %C = icmp eq i32 %V, 18 ; <i1> [#uses=1] 13 %D = icmp eq i32 %V, 180 ; <i1> [#uses=1] 14 %E = or i1 %C, %D ; <i1> [#uses=1] 15 br i1 %E, label %L1, label %Sw 16 Sw: ; preds = %0 17 switch i32 %V, label %L1 [ 18 i32 15, label %L2 19 i32 16, label %L2 20 ] 21 L1: ; preds = %Sw, %0 22 call void @foo( ) 23 ret void 24 L2: ; preds = %Sw, %Sw 25 call void @bar( ) 26 ret void 27 } 28 29
