1*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -O2 -march=x86-64 | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker; Checks that a zeroing mov is inserted for the trunc/zext pair even when 3*9880d681SAndroid Build Coastguard Worker; the source of the zext is an AssertSext node 4*9880d681SAndroid Build Coastguard Worker; PR20494 5*9880d681SAndroid Build Coastguard Worker 6*9880d681SAndroid Build Coastguard Workerdefine i64 @main(i64 %a) { 7*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: main 8*9880d681SAndroid Build Coastguard Worker; CHECK: movl %e{{..}}, %eax 9*9880d681SAndroid Build Coastguard Worker; CHECK: ret 10*9880d681SAndroid Build Coastguard Worker %or = or i64 %a, -2 11*9880d681SAndroid Build Coastguard Worker %trunc = trunc i64 %or to i32 12*9880d681SAndroid Build Coastguard Worker br label %l 13*9880d681SAndroid Build Coastguard Workerl: 14*9880d681SAndroid Build Coastguard Worker %ext = zext i32 %trunc to i64 15*9880d681SAndroid Build Coastguard Worker ret i64 %ext 16*9880d681SAndroid Build Coastguard Worker} 17