* config/avr/avr-protos.h: (avr_output_ascii) Removed.

	* config/avr/avr-protos.h: (avr_output_ascii) Removed.
	(avr_progmem_p): New prototype.
	(output_movsisf): Prototype declaration changed.
	(output_movqi): New prototype.
	(output_movhi): New prototype.
	(call_insn_operand): Likewise.
	(final_prescan_insn): Likewise.
	(avr_simplify_comparision_p): Likewise.
	(avr_normalize_condition): Likewise.
	(compare_eq_p): Likewise.
	(out_shift_with_cnt): Likewise.
	(const_int_pow2_p): Likewise.
	(output_reload_inhi): Prototype declaration changed.

	* config/avr/avr.c: (debug_hard_reg_set): Prototype declared.
	(ldi_reg_rtx): New. rtx for r31.
	(avr_init_stack): Initialize as "__stack".
	(function_prologue): Use it.
	Replace all TARGET_ENHANCED with AVR_ENHANCED.
	(avr_mcu_name): Initialize as "avr2".
	(avr_enhanced_p, avr_mega_p): New variables.
	(mcu_types, avr_override_options): Handle all known MCU types.
	Also handle avr1 (only preprocess, assemble and link).
	(print_operand): Using of `%K' in output template removed.
	(out_movqi_r_mr): Optimized.
	(out_movhi_r_mr): Likewise.
	(output_movqi): New function.
	(output_movhi): Likewise.
	(out_movsi_r_mr): Optimized.
	(output_movsisf): Compute insn length for `adjust_insn_length'
	(out_movqi_mr_r): Optimized.
	(out_movhi_mr_r): Optimized.
	(adjust_insn_length): Use output_movsisf, output_movqi,
	output_movhi for insn length adjusting.
	(reg_unused_after): Use dead_or_set_p.
	(preferred_reload_class): Now havn't any restriction.
	(reg_was_0): New function.
	(io_address_p): Likewise.
	(const_int_pow2_p): Likewise.
	(output_reload_inhi): Likewise.
	(output_reload_insisf): Likewise.

	* config/avr/avr.h (MULTILIB_DEFAULTS): Define.
	(LIB_SPEC): Use -lc for all supported devices.
	(LIBGCC_SPEC): Use -lgcc for all supported devices.
	(AVR_MEGA): Define as avr_mega_p.
	(AVR_ENHANCED): New, define as avr_enhanced_p.
	(TARGET_SWITCHES): Remove -menhanced, now handled by -mmcu=...
	(CPP_SPEC, LINK_SPEC): Handle all known MCU types.
	(CRT_BINUTILS_SPECS): Handle all known MCU types.
	Rename gcrt1-*.o to make file names unique on 8.3 filesystems.
	(EXTRA_SPECS): Add CPP_AVR[1-5]_SPEC.
	(ASM_SPEC): Pass -mmcu=... to the assembler.
	Change all -DAVR_* to -D__AVR_*__.
	(INIT_TARGET_OPTABS), config/avr/libgcc.S:
	Rename library functions to start with two underscores.
	(ASM_OUTPUT_COMMON): Outputs `.comm VAR,VAR-SIZE,1' to avoid
	alignment.
	(ASM_WEAKEN_LABEL): Declared for __attribute__((weak)).
	(SUPPORTS_WEAK): Likewise.
	(LDI_REG_REGNO): New. Register r31 will be used as temporary
	register for loading constants to r0-r14.

	* config/avr/avr.md: Replace all TARGET_ENHANCED with
	AVR_ENHANCED.
	(*mov_r_sp): Removed. Handled by output_movhi.
	(*mov_sp_r): Likewise.
	(*mov_sp_r_no_interrupts): Likewise
	(*mov_sp_r_tiny): Likewise.
	(*movqi): Use output_movqi.
	(*reload_inqi): New.
	(*movhi): Use output_movhi.
	(*reload_inhi): New.
	(*negsi2): Optimized.
	(*negsf2): Likewise.
	Added peepholes (define_peephole2) for loading constants to r0-r14
	and for using `cpse' command.

	* config/avr/libgcc.S: Rename library functions to start with two
	underscores.
	Add support for enhanced core.
	(_moqhi3): Fix typo, now _modqi3.
	(__divsi_raw): Use __zero_reg__ as loop counter, smaller by 1 word.
	(__prologue_saves__): Remove test for stack adjust by 0.
	(__tablejump__): New.

	* config/avr/t-avr: Build libgcc2 with -mcall-prologues.
	Add multilib support.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@36047 138bc75d-0d04-0410-961f-82ee72b054a4