1*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -march=x86-64 | grep testb 2*9880d681SAndroid Build Coastguard Worker 3*9880d681SAndroid Build Coastguard Worker; Make sure dagcombine doesn't eliminate the comparison due 4*9880d681SAndroid Build Coastguard Worker; to an off-by-one bug with computeKnownBits information. 5*9880d681SAndroid Build Coastguard Worker 6*9880d681SAndroid Build Coastguard Workerdeclare void @qux() 7*9880d681SAndroid Build Coastguard Worker 8*9880d681SAndroid Build Coastguard Workerdefine void @foo(i32 %a) { 9*9880d681SAndroid Build Coastguard Worker %t0 = lshr i32 %a, 23 10*9880d681SAndroid Build Coastguard Worker br label %next 11*9880d681SAndroid Build Coastguard Workernext: 12*9880d681SAndroid Build Coastguard Worker %t1 = and i32 %t0, 256 13*9880d681SAndroid Build Coastguard Worker %t2 = icmp eq i32 %t1, 0 14*9880d681SAndroid Build Coastguard Worker br i1 %t2, label %true, label %false 15*9880d681SAndroid Build Coastguard Workertrue: 16*9880d681SAndroid Build Coastguard Worker call void @qux() 17*9880d681SAndroid Build Coastguard Worker ret void 18*9880d681SAndroid Build Coastguard Workerfalse: 19*9880d681SAndroid Build Coastguard Worker ret void 20*9880d681SAndroid Build Coastguard Worker} 21