inert-tag-untag-insn? ( object -- ? )

Vocabulary

compiler.cfg.representations.selection

Inputs and outputs

object	an object
?	a boolean

Word description

Tests if the object is an instance of the inert-tag-untag-insn class.

Definition

USING: classes.tuple.private compiler.cfg.instructions kernel
math.private slots.private ;

IN: compiler.cfg.representations.selection

: inert-tag-untag-insn? ( object -- ? )
    dup tuple? [
        layout-of
        dup
        1
        slot
        15
        fixnum>=
        [
            15
            slot
            dup
            \ ##max
            eq?
            [ drop t ]
            [
                dup \ ##min eq?
                [ drop t ] [
                    dup \ ##xor eq?
                    [ drop t ] [
                        dup \ ##or eq?
                        ~quotation~ ~quotation~ if
                    ] if
                ] if
            ]
            if
        ]
        [ drop f ]
        if
    ] [ drop f ] if ;