Re: Patch: Don't clear memory returned by ggc_alloc

[Zack Weinberg <zack at wolery dot cumb dot org>]

On Thu, Jun 08, 2000 at 10:58:30PM -0700, Mark Mitchell wrote:
> 
> Zack --
> 
>   This looks good to me.  Thanks!

Now committed.  Here is the final ChangeLog.

zw

toplevel:
        * ggc-none.c, ggc-simple.c, ggc-page.c (ggc_alloc_obj): Rename
        it ggc_alloc, drop second argument, never clear returned memory.
        * ggc-common.c (ggc_alloc_string): Use ggc_alloc.
        (ggc_alloc_cleared): New.
        * ggc.h: Prototype ggc_alloc and ggc_alloc_cleared, not
        ggc_alloc_obj.  Remove ggc_alloc macro.
        (ggc_alloc_rtx, ggc_alloc_rtvec, ggc_alloc_tree): Use ggc_alloc.

        * rtl.c (rtvec_alloc): Clear the vector always.
        (rtx_alloc): Clear the first word always.  Remove dirty
        obstack tricks (this routine is no longer a bottleneck).
        * tree.c (make_node): Clear the new node always.
        (make_tree_vec): Likewise.
        (tree_cons): Clear the common structure always.
        (build1): Likewise; also, clear TREE_COMPLEXITY.
        * gengenrtl.c: Use puts wherever possible.  Remove extra
        newlines.
        (gendef): Clear the first word of an RTX in the generator
        function, irrespective of ggc_p.  Initialize '0' slots to
        NULL.
        (genlegend): Don't generate obstack_alloc_rtx routine, just a
        thin wrapper macro around obstack_alloc.

        * stmt.c (expand_fixup): Use ggc_alloc.
        * c-typeck.c (add_pending_init): Use ggc_alloc.
        * emit-rtl.c (init_emit_once): Clear CONST_DOUBLE_CHAIN(tem).
        * varasm.c (immed_double_const): Set CONST_DOUBLE_MEM(r) to
        const0_rtx when it is created.
        (immed_real_const_1): Set CONST_DOUBLE_CHAIN(r) to NULL_RTX if
        we are not in a function.

        * tree.c (tree_class_check_failed): Make second arg an int.
        * tree.h: Update prototype.

cp:
        * call.c (add_candidate): Use ggc_alloc_cleared.
        * decl.c (lookup_label): Likewise.
        * lex.c (retrofit_lang_decl): Likewise.