Limit the MEMSET (setmemsi pattern) and MEMCPY (movmemsi pattern) instructions to...

Limit the MEMSET (setmemsi pattern) and MEMCPY (movmemsi pattern) instructions to 0-511 bytes.

Limit the MEMSET (setmemsi pattern) and MEMCPY (movmemsi pattern)
instructions to 0-511 bytes. There is a hardware limitation on large
MEMSET, MEMCPY operations that the library versions of memset() and
memcpy() deal with.

2015-09-29  James Bowman  <james.bowman@ftdichip.com>

	* config/ft32/predicates.md (ft32_imm_operand): New predicate.
	* config/ft32/ft32.md (movmemsi, setmemsi): Use ft32_imm_operand
	predicate, disallow register for operand 2.

From-SVN: r228271