i386-opts.h (enum stringop_alg): Add vector_loop.
ChangeLog:
* config/i386/i386-opts.h (enum stringop_alg): Add vector_loop.
* config/i386/i386.c (expand_set_or_movmem_via_loop): Use
adjust_address instead of change_address to keep info about alignment.
(emit_strmov): Remove.
(emit_memmov): New function.
(expand_movmem_epilogue): Refactor to properly handle bigger sizes.
(expand_movmem_epilogue): Likewise and return updated rtx for
destination.
(expand_constant_movmem_prologue): Likewise and return updated rtx for
destination and source.
(decide_alignment): Refactor, handle vector_loop.
(ix86_expand_movmem): Likewise.
(ix86_expand_setmem): Likewise.
* config/i386/i386.opt (Enum): Add vector_loop to option stringop_alg.
testsuite/ChangeLog:
* gcc.target/i386/memcpy-vector_loop-1.c: New.
* gcc.target/i386/memcpy-vector_loop-2.c: New.
From-SVN: r200751