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Re: Results for 3.4-bi 20021213 (experimental) testsuite on


"John David Anglin" <dave@hiauly1.hia.nrc.ca> writes:

> Not much difference.  I started looking at the failure of
> g++.jason/thunk1.C (random selection) as I suspected there might
> have been some change to thunks.  However, that doesn't seem to
> be the problem.  It seems that the struct value register (%r28) is not
> being passed anymore, or the instruction that passes it was deleted.
> I haven't looked at the rtl yet.
>
> Do you recall any changes that might have affected this?

I don't *recall* any such changes, but this looks suspicious:

date: 2002/12/14 08:55:32;  author: jason;  state: Exp;  lines: +4 -1
        * tree.h (CALL_EXPR_HAS_RETURN_SLOT_ADDR): New macro.
        * calls.c (expand_call): Handle it.
        * tree-inline.c (struct inline_data): Remove target_exprs field.
        (optimize_inline_calls): Don't initialize it.
        (expand_call_inline): Don't modify it.  Handle
        CALL_EXPR_HAS_RETURN_SLOT_ADDR.
        (declare_return_variable): Take return slot addr.
        * langhooks.h (copy_res_decl_for_inlining): Change target_exprs parm
        to return_slot_addr.
        * langhooks-def.h, langhooks.c: Adjust.
        * explow.c (maybe_set_unchanging): Don't set RTX_UNCHANGING_P for
        a decl with no DECL_INITIAL.

        * expr.c (expand_expr): Don't discard the target of a call which
        returns in memory.

cp/
        * semantics.c (simplify_aggr_init_exprs_r): Also prepend the
        return slot for normal functions.  Set CALL_EXPR_HAS_RETURN_SLOT_ADDR.
        * tree.c (build_cplus_new): If the type isn't TREE_ADDRESSABLE,
        don't bother with an AGGR_INIT_EXPR.
        (cp_copy_res_decl_for_inlining): If the type isn't TREE_ADDRESSABLE,
        just generate a new decl normally.  Take return slot parm.
        * cp-tree.h: Adjust prototype.

zw


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