Re: [PATCH 006/236] Introduce rtx_insn subclass of rtx_def

[Jeff Law]

On 08/06/14 11:19, David Malcolm wrote:

gcc/
        * coretypes.h (class rtx_insn): Add forward declaration.

        * rtl.h: Include is-a.h
        (struct rtx_def): Add dummy "desc" and "tag" GTY options as a
        workaround to ensure gengtype knows inheritance is occurring,
        whilst continuing to use the pre-existing special-casing for
        rtx_def.
        (class rtx_insn): New subclass of rtx_def, adding the
        invariant that we're dealing with something we can sanely use INSN_UID,
        NEXT_INSN, PREV_INSN on.
        (is_a_helper <rtx_insn *>::test): New.
        (is_a_helper <const rtx_insn *>::test): New.

OK.
Jeff