* config/cris/cris.md: Change all 0 in unspec 0 to
CRIS_UNSPEC_PLT.
(CRIS_UNSPEC_PLT, CRIS_UNSPEC_FRAME_DEALLOC): New constants.
("*cris_load_multiple", "cris_frame_deallocated_barrier"): New
patterns.
("return"): Change to define_expand. Call cris_expand_return for
actual expansion.
("*return_expanded"): New pattern.
("epilogue"): New define_expand.
* config/cris/cris.h (PREDICATE_CODES): Add
cris_load_multiple_op.
* config/cris/cris.c (ASSERT_PLT_UNSPEC): Correct test for unspec
type.
(enum cris_retinsn_type): New.
(struct machine_function): New member return_type.
(TARGET_ASM_FUNCTION_EPILOGUE): Don't override.
(cris_target_asm_function_epilogue): Remove, moving RTLified
contents to...
(cris_expand_epilogue): New function.
(cris_reg_saved_in_regsave_area, cris_movem_load_rest_p,
(cris_gen_movem_load, cris_load_multiple_op)
(cris_return_address_on_stack_for_return, cris_expand_return): New
functions.
(cris_target_asm_function_prologue)
(cris_initial_frame_pointer_offset): Call
cris_reg_saved_in_regsave_area instead of complicated expression.
Call cris_return_address_on_stack instead of an expression.
(cris_print_operand) <case 'o', case 'O'>: New cases.
(cris_return_address_on_stack): Change return-type to bool.
(cris_simple_epilogue): Ditto. Return false if registers are
saved.
* config/cris/cris-protos.h (cris_simple_epilogue)
(cris_return_address_on_stack): Adjust prototype return type.
(cris_gen_movem_load, cris_expand_epilogue, cris_expand_return)
(cris_return_address_on_stack_for_return): New prototypes.