test regalloc
isa intel

; regex: V=v\d+

; Tied operands, both are killed at instruction.
function %tied_easy() -> i32 {
ebb0:
    v0 = iconst.i32 12
    v1 = iconst.i32 13
    ; not: copy
    ; check: isub
    v2 = isub v0, v1
    return v2
}