Re: Memset/memcpy patch

["H.J. Lu" <hjl dot tools at gmail dot com>]

On Mon, Nov 14, 2011 at 9:03 AM, Jan Hubicka <hubicka@ucw.cz> wrote:
> Hi,
> this is hopefully final variant of patch. The epilogue code was broken in some
> scenarios for memset, but should work safely now. ?I also fixed the tables for
> core/buldozer/amdfam10 chips.
>
> But before it can be comitted, we need to reoslve copyright assignment issues.
> You don't seem to be liested as having copyright assignment, does you company
> have one? ?Otherwise, please try to get one soon.
>
> Honza
>
> 2011-11-14 ?Zolotukhin Michael ?<michael.v.zolotukhin@gmail.com>
> ? ? ? ? ? ?Jan Hubicka ?<jh@suse.cz>
>
> ? ? ? ?* gcc.target/i386/sw-1.c: Force rep;movsb.
>
> ? ? ? ?* config/i386/i386.h (processor_costs): Add second dimension to
> ? ? ? ?stringop_algs array.
> ? ? ? ?* config/i386/i386.c (cost models): Initialize second dimension of
> ? ? ? ?stringop_algs arrays.
> ? ? ? ?(core_cost): New costs based on generic64 costs with updated stringop
> ? ? ? ?values.
> ? ? ? ?(promote_duplicated_reg): Add support for vector modes, add
> ? ? ? ?declaration.
> ? ? ? ?(promote_duplicated_reg_to_size): Likewise.
> ? ? ? ?(processor_target): Set core costs for core variants.
> ? ? ? ?(expand_set_or_movmem_via_loop_with_iter): New function.
> ? ? ? ?(expand_set_or_movmem_via_loop): Enable reuse of the same iters in
> ? ? ? ?different loops, produced by this function.
> ? ? ? ?(emit_strset): New function.
> ? ? ? ?(expand_movmem_epilogue): Add epilogue generation for bigger sizes,
> ? ? ? ?use SSE-moves where possible.
> ? ? ? ?(expand_setmem_epilogue): Likewise.
> ? ? ? ?(expand_movmem_prologue): Likewise for prologue.
> ? ? ? ?(expand_setmem_prologue): Likewise.
> ? ? ? ?(expand_constant_movmem_prologue): Likewise.
> ? ? ? ?(expand_constant_setmem_prologue): Likewise.
> ? ? ? ?(decide_alg): Add new argument align_unknown. ?Fix algorithm of
> ? ? ? ?strategy selection if TARGET_INLINE_ALL_STRINGOPS is set; Skip sse_loop
> ? ? ? ?(decide_alignment): Update desired alignment according to chosen move
> ? ? ? ?mode.
> ? ? ? ?(ix86_expand_movmem): Change unrolled_loop strategy to use SSE-moves.
> ? ? ? ?(ix86_expand_setmem): Likewise.
> ? ? ? ?(ix86_slow_unaligned_access): Implementation of new hook
> ? ? ? ?slow_unaligned_access.
> ? ? ? ?* config/i386/i386.md (strset): Enable half-SSE moves.
> ? ? ? ?* config/i386/sse.md (vec_dupv4si): Add expand for vec_dupv4si.
> ? ? ? ?(vec_dupv2di): Add expand for vec_dupv2di.

This may have caused:

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51134

-- 
H.J.