; RUN: llvm-as < %s | llc -march=arm &&
; RUN: llvm-as < %s | llc -march=arm -mattr=+v6 &&
; RUN: llvm-as < %s | llc -march=arm -mattr=+v6 | grep "uxtb"  | wc -l | grep 1 &&
; RUN: llvm-as < %s | llc -march=arm -mattr=+v6 | grep "uxtab" | wc -l | grep 1 &&
; RUN: llvm-as < %s | llc -march=arm -mattr=+v6 | grep "uxth"  | wc -l | grep 1

define i8 @test1(i32 %A.u) zext {
    %B.u = trunc i32 %A.u to i8
    ret i8 %B.u
}

define i32 @test2(i32 %A.u, i32 %B.u) zext {
    %C.u = trunc i32 %B.u to i8
    %D.u = zext i8 %C.u to i32
    %E.u = add i32 %A.u, %D.u
    ret i32 %E.u
}

define i32 @test3(i32 %A.u) zext {
    %B.u = lshr i32 %A.u, i8 8
    %C.u = shl i32 %A.u, i8 24
    %D.u = or i32 %B.u, %C.u
    %E.u = trunc i32 %D.u to i16
    %F.u = zext i16 %E.u to i32
    ret i32 %F.u
}