gcc/

	* config/mips/mips-protos.h (mips_split_type): New enum.
	(mips_split_64bit_move_p, mips_split_doubleword_move): Delete.
	(mips_split_move_p, mips_split_move, mips_split_move_insn_p)
	(mips_split_move_insn): Declare.
	* config/mips/mips.c (mips_tuning_info): New variable.
	(mips_load_store_insns): Use mips_split_move_insn_p instead of
	mips_split_64bit_move_p.
	(mips_emit_move_or_split, mips_mult_move_p): New functions.
	(mips_split_64bit_move_p): Rename to...
	(mips_split_move_p): ...this and take a mips_split_type argument.
	Generalize to all moves.  Call mips_mult_move_p.
	(mips_split_doubleword_move): Rename to...
	(mips_split_move): ...this and take a mips_split_type argument.
	Assert that mips_split_move_p holds.
	(mips_insn_split_type, mips_split_move_insn_p, mips_split_move_insn):
	New functions.
	(mips_output_move): Use mips_split_move_p instead of
	mips_split_64bit_move_p.  Handle MULT $0, $0 moves.
	(mips_save_reg): Use mips_emit_move_or_split.
	(mips_sim_reset): Assign to curr_state.  Call targetm.sched.init
	and advance_state.
	(mips_sim_init): Call targetm.sched.init_dfa_pre_cycle_insn and
	targetm.sched.init_dfa_post_cycle_insn, if defined.
	(mips_sim_next_cycle): Assign to curr_state.  Use advance_state
	instead of state_transition.
	(mips_sim_issue_insn): Assign to curr_state.  Use
	targetm.sched.variable_issue to see how many more insns
	can be issued.
	(mips_seq_time, mips_mult_zero_zero_cost)
	(mips_set_fast_mult_zero_zero_p, mips_set_tuning_info)
	(mips_expand_to_rtl_hook): New functions.
	(TARGET_EXPAND_TO_RTL_HOOK): Define.
	* config/mips/mips.md (move_type): Add imul.
	(type): Map imul move_types to imul.
	(*movdi_32bit, *movti): Add imul alternatives.
	Use mips_split_move_insn_p and mips_split_move_insn instead of
	mips_split_64bit_move_p and mips_split_doubleword_move in move
	splitters.

gcc/testsuite/
2012-10-07  Richard Sandiford  <rdsandiford@googlemail.com>
	    Sandra Loosemore  <sandra@codesourcery.com>

	* gcc.target/mips/madd-9.c: Force code to be tuned for the 4kc
	and test that the accumulator is initialized using MULT.
	* gcc.target/mips/mips32-dsp-accinit-1.c: New test.
	* gcc.target/mips/mips32-dsp-accinit-2.c: Likewise.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@192179 138bc75d-0d04-0410-961f-82ee72b054a4

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