1*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -basicaa -gvn -instcombine -S | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker; PR1600 3*9880d681SAndroid Build Coastguard Worker 4*9880d681SAndroid Build Coastguard Workerdeclare i16 @llvm.cttz.i16(i16, i1) 5*9880d681SAndroid Build Coastguard Worker 6*9880d681SAndroid Build Coastguard Workerdefine i32 @test(i32* %P, i16* %Q) { 7*9880d681SAndroid Build Coastguard Worker; CHECK: ret i32 0 8*9880d681SAndroid Build Coastguard Worker %A = load i16, i16* %Q ; <i16> [#uses=1] 9*9880d681SAndroid Build Coastguard Worker %x = load i32, i32* %P ; <i32> [#uses=1] 10*9880d681SAndroid Build Coastguard Worker %B = call i16 @llvm.cttz.i16( i16 %A, i1 true ) ; <i16> [#uses=1] 11*9880d681SAndroid Build Coastguard Worker %y = load i32, i32* %P ; <i32> [#uses=1] 12*9880d681SAndroid Build Coastguard Worker store i16 %B, i16* %Q 13*9880d681SAndroid Build Coastguard Worker %z = sub i32 %x, %y ; <i32> [#uses=1] 14*9880d681SAndroid Build Coastguard Worker ret i32 %z 15*9880d681SAndroid Build Coastguard Worker} 16*9880d681SAndroid Build Coastguard Worker 17