1*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -instcombine -S | grep zext 2*9880d681SAndroid Build Coastguard Worker; PR1261. 3*9880d681SAndroid Build Coastguard Worker 4*9880d681SAndroid Build Coastguard Workerdefine i16 @test(i31 %zzz) { 5*9880d681SAndroid Build Coastguard Worker %A = sext i31 %zzz to i32 6*9880d681SAndroid Build Coastguard Worker %B = add i32 %A, 16384 7*9880d681SAndroid Build Coastguard Worker %C = lshr i32 %B, 15 8*9880d681SAndroid Build Coastguard Worker %D = trunc i32 %C to i16 9*9880d681SAndroid Build Coastguard Worker ret i16 %D 10*9880d681SAndroid Build Coastguard Worker} 11