[AVR] : Cleanup avr.c a bit

This patch is mostly mechanical:

Add some comment, break long lines, use CONST_INT_P instead of
CONST_INT == GET_CODE().

The targetm initializer is moved down in the file similar to m32c,
s390, alpha, etc. back ends.

That way a hook can be defined on the fly:

static foo_t
foo_hook (foo_args)
{
  ...
}

#undef FOO_HOOK
#define FOO_HOOK foo_hook

targetm = ...

instead of the redundant prototyping

static foo_t foo_hook (foo_args)

#undef FOO_HOOK
#define FOO_HOOK foo_hook

targetm = ...

foo_t
foo_hook (foo_args)
{
  ...
}

This reduced redundancy in avr.c and subsequent patches that
add/remove hooks will need less lines to be changed.

reg_class_tab is now local static and use smallest register class.

Tested without regressions.

Johann

	* config/avr/avr.c (targetm): Move down.
	(TARGET_ASM_ALIGNED_HI_OP): Move down.
	(TARGET_ASM_ALIGNED_SI_OP): Move down.
	(TARGET_ASM_UNALIGNED_HI_OP): Move down.
	(TARGET_ASM_UNALIGNED_SI_OP): Move down.
	(TARGET_ASM_INTEGER): Move down.
	(TARGET_ASM_FILE_START): Move down.
	(TARGET_ASM_FILE_END): Move down.
	(TARGET_ASM_FUNCTION_END_PROLOGUE): Move down.
	(TARGET_ASM_FUNCTION_BEGIN_EPILOGUE): Move down.
	(TARGET_FUNCTION_VALUE): Move down.
	(TARGET_LIBCALL_VALUE): Move down.
	(TARGET_FUNCTION_VALUE_REGNO_P): Move down.
	(TARGET_ATTRIBUTE_TABLE): Move down.
	(TARGET_ASM_FUNCTION_RODATA_SECTION): Move down.
	(TARGET_INSERT_ATTRIBUTES): Move down.
	(TARGET_SECTION_TYPE_FLAGS): Move down.
	(TARGET_ASM_INIT_SECTIONS): Move down.
	(TARGET_ENCODE_SECTION_INFO): Move down.
	(TARGET_REGISTER_MOVE_COST): Move down.
	(TARGET_MEMORY_MOVE_COST): Move down.
	(TARGET_RTX_COSTS): Move down.
	(TARGET_ADDRESS_COST): Move down.
	(TARGET_MACHINE_DEPENDENT_REORG): Move down.
	(TARGET_FUNCTION_ARG): Move down.
	(TARGET_FUNCTION_ARG_ADVANCE): Move down.
	(TARGET_LEGITIMIZE_ADDRESS): Move down.
	(TARGET_RETURN_IN_MEMORY): Move down.
	(TARGET_STRICT_ARGUMENT_NAMING): Move down.
	(TARGET_BUILTIN_SETJMP_FRAME_VALUE): Move down.
	(TARGET_HARD_REGNO_SCRATCH_OK): Move down.
	(TARGET_CASE_VALUES_THRESHOLD): Move down.
	(TARGET_LEGITIMATE_ADDRESS_P): Move down.
	(TARGET_FRAME_POINTER_REQUIRED): Move down.
	(TARGET_CAN_ELIMINATE): Move down.
	(TARGET_CLASS_LIKELY_SPILLED_P): Move down.
	(TARGET_OPTION_OVERRIDE): Move down.
	(TARGET_CANNOT_MODIFY_JUMPS_P): Move down.
	(TARGET_FUNCTION_OK_FOR_SIBCALL): Move down.
	(TARGET_INIT_BUILTINS): Move down.
	(TARGET_EXPAND_BUILTIN): Move down.
	(avr_operand_rtx_cost): Move down.
	(avr_init_machine_status): Move up.
	(avr_legitimize_address): Define on the fly.
	(avr_legitimate_address_p): Define on the fly.
	(avr_hard_regno_scratch_ok): Define on the fly.
	(avr_builtin_setjmp_frame_value): Define on the fly.
	(avr_case_values_threshold): Define on the fly.
	(avr_can_eliminate): Define on the fly.
	(avr_asm_named_section): Define on the fly.
	(avr_frame_pointer_required_p): Define on the fly.
	(avr_regnames): Remove unused variable.
	(reg_class_tab): Use SIMPLE_LD_REGS for r16-r23.
	Use NO_LD_REGS for r0-r15.
	(avr_regno_reg_class): Incorporate reg_class_tab.
	(out_movqi_r_mr): Use CONST_INT_P.
	(out_movqi_mr_r): Use CONST_INT_P.
	(output_movsisf): Use CONST_INT_P.
	(out_shift_with_cnt): Use CONST_INT_P.
	(ashlqi3_out): Use CONST_INT_P.
	(ashlhi3_out): Use CONST_INT_P.
	(ashlsi3_out): Use CONST_INT_P.
	(ashrqi3_out): Use CONST_INT_P.
	(ashrhi3_out): Use CONST_INT_P.
	(ashrsi3_out): Use CONST_INT_P.
	(lshrqi3_out): Use CONST_INT_P.
	(lshrhi3_out): Use CONST_INT_P.
	(lshrsi3_out): Use CONST_INT_P.
	(adjust_insn_length): Use CONST_INT_P.
	(avr_rtx_costs): Use CONST_INT_P.
	(avr_address_cost): Use CONST_INT_P.
	(extra_constraint_Q): Use CONST_INT_P.
	(avr_reorg): Use CONST_INT_P.
	(output_reload_inhi): Use CONST_INT_P.
	(output_reload_insisf): Use CONST_INT_P.
	(avr_out_sbxx_branch): Use CONST_INT_P.
	(print_operand_address): Use CONST_INT_P.
	(print_operand): Use CONST_INT_P.
	(notice_update_cc): Use CONST_INT_P.
	(avr_simplify_comparison_p): Use CONST_INT_P.
	(output_movqi): Use CONST_INT_P.
	(output_movhi): Use CONST_INT_P.
	Fix long lines.

[AVR] : Cleanup avr.c a bit

Commit Message

Comments

Patch