1*9880d681SAndroid Build Coastguard Worker; Here we have a case where there are two loops and LICM is hoisting an 2*9880d681SAndroid Build Coastguard Worker; instruction from one loop into the other loop! This is obviously bad and 3*9880d681SAndroid Build Coastguard Worker; happens because preheader insertion doesn't insert a preheader for this 4*9880d681SAndroid Build Coastguard Worker; case... bad. 5*9880d681SAndroid Build Coastguard Worker 6*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -licm -loop-deletion -simplifycfg -S | \ 7*9880d681SAndroid Build Coastguard Worker; RUN: not grep "br " 8*9880d681SAndroid Build Coastguard Worker 9*9880d681SAndroid Build Coastguard Workerdefine i32 @main(i32 %argc) { 10*9880d681SAndroid Build Coastguard Worker; <label>:0 11*9880d681SAndroid Build Coastguard Worker br label %bb5 12*9880d681SAndroid Build Coastguard Workerbb5: ; preds = %bb5, %0 13*9880d681SAndroid Build Coastguard Worker %I = phi i32 [ 0, %0 ], [ %I2, %bb5 ] ; <i32> [#uses=1] 14*9880d681SAndroid Build Coastguard Worker %I2 = add i32 %I, 1 ; <i32> [#uses=2] 15*9880d681SAndroid Build Coastguard Worker %c = icmp eq i32 %I2, 10 ; <i1> [#uses=1] 16*9880d681SAndroid Build Coastguard Worker br i1 %c, label %bb5, label %bb8 17*9880d681SAndroid Build Coastguard Workerbb8: ; preds = %bb8, %bb5 18*9880d681SAndroid Build Coastguard Worker %cann-indvar = phi i32 [ 0, %bb8 ], [ 0, %bb5 ] ; <i32> [#uses=0] 19*9880d681SAndroid Build Coastguard Worker %X = add i32 %argc, %argc ; <i32> [#uses=1] 20*9880d681SAndroid Build Coastguard Worker br i1 false, label %bb8, label %bb10 21*9880d681SAndroid Build Coastguard Workerbb10: ; preds = %bb8 22*9880d681SAndroid Build Coastguard Worker ret i32 %X 23*9880d681SAndroid Build Coastguard Worker} 24*9880d681SAndroid Build Coastguard Worker 25