1*9880d681SAndroid Build Coastguard Worker; RUN: llc -o /dev/null %s 2*9880d681SAndroid Build Coastguard Worker; This testcase produces a situation with unused value numbers in subregister 3*9880d681SAndroid Build Coastguard Worker; liveranges that get distributed by ConnectedVNInfoEqClasses. 4*9880d681SAndroid Build Coastguard Workertarget triple = "amdgcn--" 5*9880d681SAndroid Build Coastguard Worker 6*9880d681SAndroid Build Coastguard Workerdefine spir_kernel void @hoge() { 7*9880d681SAndroid Build Coastguard Workerbb: 8*9880d681SAndroid Build Coastguard Worker %tmp = tail call i32 @llvm.r600.read.tidig.x() 9*9880d681SAndroid Build Coastguard Worker br i1 undef, label %bb2, label %bb23 10*9880d681SAndroid Build Coastguard Worker 11*9880d681SAndroid Build Coastguard Workerbb2: 12*9880d681SAndroid Build Coastguard Worker br i1 undef, label %bb6, label %bb8 13*9880d681SAndroid Build Coastguard Worker 14*9880d681SAndroid Build Coastguard Workerbb6: 15*9880d681SAndroid Build Coastguard Worker %tmp7 = or i64 undef, undef 16*9880d681SAndroid Build Coastguard Worker br label %bb8 17*9880d681SAndroid Build Coastguard Worker 18*9880d681SAndroid Build Coastguard Workerbb8: 19*9880d681SAndroid Build Coastguard Worker %tmp9 = phi i64 [ %tmp7, %bb6 ], [ undef, %bb2 ] 20*9880d681SAndroid Build Coastguard Worker %tmp10 = icmp eq i32 %tmp, 0 21*9880d681SAndroid Build Coastguard Worker br i1 %tmp10, label %bb11, label %bb23 22*9880d681SAndroid Build Coastguard Worker 23*9880d681SAndroid Build Coastguard Workerbb11: 24*9880d681SAndroid Build Coastguard Worker br i1 undef, label %bb20, label %bb17 25*9880d681SAndroid Build Coastguard Worker 26*9880d681SAndroid Build Coastguard Workerbb17: 27*9880d681SAndroid Build Coastguard Worker br label %bb20 28*9880d681SAndroid Build Coastguard Worker 29*9880d681SAndroid Build Coastguard Workerbb20: 30*9880d681SAndroid Build Coastguard Worker %tmp21 = phi i64 [ undef, %bb17 ], [ %tmp9, %bb11 ] 31*9880d681SAndroid Build Coastguard Worker %tmp22 = trunc i64 %tmp21 to i32 32*9880d681SAndroid Build Coastguard Worker br label %bb23 33*9880d681SAndroid Build Coastguard Worker 34*9880d681SAndroid Build Coastguard Workerbb23: 35*9880d681SAndroid Build Coastguard Worker %tmp24 = phi i32 [ %tmp22, %bb20 ], [ undef, %bb8 ], [ undef, %bb ] 36*9880d681SAndroid Build Coastguard Worker br label %bb25 37*9880d681SAndroid Build Coastguard Worker 38*9880d681SAndroid Build Coastguard Workerbb25: 39*9880d681SAndroid Build Coastguard Worker %tmp26 = phi i32 [ %tmp24, %bb23 ], [ undef, %bb25 ] 40*9880d681SAndroid Build Coastguard Worker br i1 undef, label %bb25, label %bb30 41*9880d681SAndroid Build Coastguard Worker 42*9880d681SAndroid Build Coastguard Workerbb30: 43*9880d681SAndroid Build Coastguard Worker br i1 undef, label %bb32, label %bb34 44*9880d681SAndroid Build Coastguard Worker 45*9880d681SAndroid Build Coastguard Workerbb32: 46*9880d681SAndroid Build Coastguard Worker %tmp33 = zext i32 %tmp26 to i64 47*9880d681SAndroid Build Coastguard Worker br label %bb34 48*9880d681SAndroid Build Coastguard Worker 49*9880d681SAndroid Build Coastguard Workerbb34: 50*9880d681SAndroid Build Coastguard Worker ret void 51*9880d681SAndroid Build Coastguard Worker} 52*9880d681SAndroid Build Coastguard Worker 53*9880d681SAndroid Build Coastguard Workerdeclare i32 @llvm.r600.read.tidig.x() 54