backport: [multiple changes]

backport: [multiple changes]

2003-02-03  Eric Botcazou  <ebotcazou@libertysurf.fr>

	* cfgcleanup.c (try_forward_edges): Check for null insn.

2003-02-03  Franz Sirl  <Franz.Sirl-kernel@lauterbach.com>
	Eric Botcazou  <ebotcazou@libertysurf.fr>

	Backport following patches:

	2002-09-16  Richard Henderson  <rth@redhat.com>

        * emit-rtl.c (set_mem_attributes_minus_bitpos): Adjust SIZE
        as well as OFFSET for BITPOS.

	2002-09-08  Jan Hubicka  <jh@suse.cz>

        * emit-rtl.c (set_mem_attributes_minus_bitpos): Fix array_ref
        handling.

	2002-07-29  Richard Henderson  <rth@redhat.com>

        * emit-rtl.c (set_mem_attributes_minus_bitpos): Rename from
        set_mem_attributes and add BITPOS argument.  Subtract it from
        OFFSET when same is adjusted.
        (set_mem_attributes): New wrapper function.
        * expr.c (expand_assignment): Use set_mem_attributes_minus_bitpos;
        remove offset adjustment hack.
        * expr.h (set_mem_attributes_minus_bitpos): Declare.

	2002-07-25  Richard Henderson  <rth@redhat.com>

        * emit-rtl.c (set_mem_attributes): Fix size and alignment thinkos
        in ARRAY_REF of DECL_P case.

	2002-07-21  Richard Henderson  <rth@redhat.com>

        * emit-rtl.c (set_mem_attributes): Preserve indirection of PARM_DECL
        when flag_argument_noalias == 2.
        * alias.c (nonoverlapping_memrefs_p): Handle that.
        * print-rtl.c (print_mem_expr): Likewise.

	2002-06-03  Dan Nicolaescu  <dann@godzilla.ics.uci.edu>

        * alias.c (nonoverlapping_memrefs_p): Fix off by one error.

From-SVN: r62331