2015-07-14  Sandra Loosemore  <sandra@codesourcery.com>
	    Cesar Philippidis  <cesar@codesourcery.com>
	    Chung-Lin Tang  <cltang@codesourcery.com>

	gcc/
	* config/nios2/predicates.md (pop_operation): New.
	(ldwm_operation, stwm_operation): New.
	(nios2_hard_register_operand): New.
	* config/nios2/nios2-protos.h (pop_operation_p): Declare.
	(ldstwm_operation_p): Declare.
	(gen_ldstwm_peep): Declare.
	* config/nios2/nios2.c: (nios2_ldst_parallel): Declare.
	(base_reg_adjustment_p): New.
	(pop_operation_p): New.
	(CDX_LDSTWM_VALID_REGS_0, CDX_LDSTWM_VALID_REGS_1): Define.
	(nios2_ldstwm_regset_p): New.
	(ldstwm_operation_p): New.
	(gen_ldst): New.
	(nios2_ldst_parallel): New.
	(struct ldswm_operand): Declare.
	(compare_ldstwm_operands): New.
	(can_use_cdx_ldstw): New.
	(gen_ldstwm_peep): New.
	* config/nios2/nios2-ldstwm.sml: New.
	* config/nios2/nios2.md: Include ldstwm.md.
	* config/nios2/ldstwm.md: Generated.

	gcc/testsuite/
	* gcc.target/nios2/cdx-ldstwm-1.c: New.
	* gcc.target/nios2/cdx-ldstwm-2.c: New.

Co-Authored-By: Cesar Philippidis <cesar@codesourcery.com>
Co-Authored-By: Chung-Lin Tang <cltang@codesourcery.com>

From-SVN: r225798