avr-c.c (avr_cpu_cpp_builtins): Don't define __MEMX for avrtiny.

avr-c.c (avr_cpu_cpp_builtins): Don't define __MEMX for avrtiny.

gcc:

2014-10-21  Joern Rennecke  <joern.rennecke@embecosm.com>
	    Vidya Praveen <vidya.praveen@atmel.com>
	    Praveen Kumar Kaushik <Praveen_Kumar.Kaushik@atmel.com>
	    Senthil Kumar Selvaraj <Senthil_Kumar.Selvaraj@atmel.com>
	    Pitchumani Sivanupandi <Pitchumani.S@atmel.com>

	* config/avr/avr-c.c (avr_cpu_cpp_builtins): Don't define
	__MEMX for avrtiny.
	* config/avr/avr.c (avr_insert_attributes): Reject __memx for avrtiny.
	(avr_nonconst_pointer_addrspace): Likewise.
	* config/avr/avr.h (AVR_HAVE_LPM): Define.

	Added AVRTINY architecture to avr target.
	* config/avr/avr-arch.h (avr_arch): Added AVRTINY architecture.
	(base_arch_s): member added for AVRTINY architecture.
	* config/avr/avr.c: Added TINY_ADIW, TINY_SBIW macros as AVRTINY
	alternate for adiw/sbiw instructions. Added AVR_TMP_REGNO and
	AVR_ZERO_REGNO macros for tmp and zero registers. Replaced TMP_REGNO
	and ZERO_REGNO occurrences by AVR_TMP_REGNO and AVR_ZERO_REGNO
	respectively. LAST_CALLEE_SAVED_REG macro added for the last register
	in callee saved register list.
	(avr_option_override): CCP address updated for AVRTINY.
	(avr_init_expanders): tmp and zero rtx initialized as per arch.
	Reset avr_have_dimode if AVRTINY.
	(sequent_regs_live): Use LAST_CALLEE_SAVED_REG instead magic number.
	(emit_push_sfr): Use AVR_TMP_REGNO for tmp register number.
	(avr_prologue_setup_frame): Don't minimize prologue if AVRTINY.
	Use LAST_CALLEE_SAVED_REG to refer last callee saved register.
	(expand_epilogue): Likewise.
	(avr_print_operand): Print CCP address in case of AVRTINY also.
	<TBD>bad address
	(function_arg_regno_p): Check different register list for arguments
	if AVRTINY.
	(init_cumulative_args): Check for AVRTINY to update number of argument
	registers.
	(tiny_valid_direct_memory_access_range): New function. Return false if
	direct memory access range is not in accepted range for AVRTINY.
	(avr_out_movqi_r_mr_reg_disp_tiny): New function to handle register
	indirect load (with displacement) for AVRTINY.
	(out_movqi_r_mr): Updated instruction length for AVRTINY. Call
	avr_out_movqi_r_mr_reg_disp_tiny for load from reg+displacement.
	(avr_out_movhi_r_mr_reg_no_disp_tiny): New function to handle register
	indirect load (no displacement) for AVRTINY.
	(avr_out_movhi_r_mr_reg_disp_tiny): New function to handle register
	indirect load (with displacement) for AVRTINY.
	(avr_out_movhi_r_mr_pre_dec_tiny): New function to handle register
	indirect load for pre-decrement address.
	(out_movhi_r_mr): In case of AVRTINY, call tiny register indirect load
	functions. Update instruction length for AVRTINY.
	(avr_out_movsi_r_mr_reg_no_disp_tiny): New function. Likewise, for
	SImode.
	(avr_out_movsi_r_mr_reg_disp_tiny): New function. Likewise, for SImode.
	(out_movsi_r_mr): Likewise, for SImode.
	(avr_out_movsi_mr_r_reg_no_disp_tiny): New function to handle register
	indirect store (no displacement) for AVRTINY.
	(avr_out_movsi_mr_r_reg_disp_tiny): New function to handle register
	indirect store (with displacement) for AVRTINY.
	(out_movsi_mr_r): Emit out insn for IO address store. Update store
	instruction's size for AVRTINY. For AVRTINY, call tiny SImode indirect
	store functions.
	(avr_out_load_psi_reg_no_disp_tiny): New function to handle register
	indirect load (no displacement) for PSImode in AVRTINY.
	(avr_out_load_psi_reg_disp_tiny): New function to handle register
	indirect load (with displacement) for PSImode in AVRTINY.
	(avr_out_load_psi): Call PSImode register indirect load functions for
	AVRTINY. Update instruction length for AVRTINY.
	(avr_out_store_psi_reg_no_disp_tiny): New function to handle register
	indirect store (no displacement) for PSImode in AVRTINY.
	(avr_out_store_psi_reg_disp_tiny): New function to handle register
	indirect store (with displacement) for PSImode in AVRTINY.
	(avr_out_store_psi): Update instruction length for AVRTINY. Call tiny
	register indirect store functions for AVRTINY.
	(avr_out_movqi_mr_r_reg_disp_tiny): New function to handle QImode
	register indirect store (with displacement) for AVRTINY.
	(out_movqi_mr_r): Update instruction length for AVRTINY. Call tiny
	register indirect store function for QImode in AVRTINY.
	(avr_out_movhi_mr_r_xmega): Update instruction length for AVRTINY.
	(avr_out_movhi_mr_r_reg_no_disp_tiny): New function to handle register
	indirect store (no displacement) for HImode in AVRTINY.
	(avr_out_movhi_mr_r_reg_disp_tiny): New function to handle register
	indirect store (with displacement) for HImode in AVRTINY.
	(avr_out_movhi_mr_r_post_inc_tiny): New function to handle register
	indirect store for post-increment address in HImode.
	(out_movhi_mr_r): Update instruction length for AVRTINY. Call tiny
	register indirect store function for HImode in AVRTINY.
	(avr_out_compare): Use TINY_SBIW/ TINY_ADIW in place of sbiw/adiw
	in case of AVRTINY.
	(order_regs_for_local_alloc): Updated register allocation order for
	AVRTINY.
	(avr_conditional_register_usage): New function. It is a target hook
	(TARGET_CONDITIONAL_REGISTER_USAGE) function which updates fixed, call
	used registers list and register allocation order for AVRTINY.
	(avr_return_in_memory): Update return value size for AVRTINY.
	* config/avr/avr-c.c (avr_cpu_cpp_builtins): Added builtin macros
	for AVRTINY arch and tiny program memory base address.
	* config/avr/avr-devices.c (avr_arch_types): Added AVRTINY arch.
	(avr_texinfo): Added description for AVRTINY arch.
	* config/avr/avr.h: Added macro to identify AVRTINY arch. Updated
	STATIC_CHAIN_REGNUM for AVRTINY.
	* config/avr/avr-mcus.def: Added AVRTINY arch devices.
	* config/avr/avr.md: Added constants for tmp/ zero registers in
	AVRTINY. Attributes for AVRTINY added.
	(mov<mode>): Move src/ dest address to register if it is not in AVRTINY
	memory access range.
	(mov<mode>_insn): Avoid QImode direct load for AVRTINY if address not
	in AVRTINY memory access range.
	(*mov<mode>): Likewise for HImode and SImode.
	(*movsf): Likewise for SFmode.
	(delay_cycles_2): Updated instructions to be emitted as AVRTINY does
	not have sbiw.
	* config/avr/avr-protos.h: Added function prototype for
	tiny_valid_direct_memory_access_range.
	* config/avr/avr-tables.opt: Regenerate.
	* gcc/config/avr/t-multilib: Regenerate.
	* doc/avr-mmcu.texi: Regenerate.

gcc/testsuite:

2014-10-21  Joern Rennecke  <joern.rennecke@embecosm.com>

	* gcc.target/avr/tiny-memx.c: New test.

	* gcc.target/avr/tiny-caller-save.c: New test.

libgcc:

2014-10-21  Joern Rennecke  <joern.rennecke@embecosm.com>
	    Vidya Praveen <vidya.praveen@atmel.com>
	    Praveen Kumar Kaushik <Praveen_Kumar.Kaushik@atmel.com>
	    Senthil Kumar Selvaraj <Senthil_Kumar.Selvaraj@atmel.com>
	    Pitchumani Sivanupandi <Pitchumani.S@atmel.com>

	* config/avr/lib1funcs.S (__do_global_dtors): Go back to descending
	order.

	Updated library functions for AVRTINY arch.
	* config/avr/lib1funcs.S: Updated zero/tmp regs for AVRTINY.
	Replaced occurrences of r0/r1 with tmp/zero reg macros.
	Added wsubi/ wadi macros that expands conditionally as sbiw/ adiw
	or AVRTINY equivalent. Replaced occurrences of sbiw/adiw with
	wsubi/wadi macors.
	(__mulsi3_helper): Update stack, preserve callee saved regs and
	argument from stack. Restore callee save registers.
	(__mulpsi3): Likewise.
	(__muldi3, __udivmodsi4, __divmodsi4, __negsi2, __umoddi3, __udivmod64,
	__moddi3, __adddi3, __adddi3_s8, __subdi3, __cmpdi2, __cmpdi2_s8,
	__negdi2, __prologue_saves__, __epilogue_restores__): Excluded for
	AVRTINY.
	(__tablejump2__): Added lpm equivalent instructions for AVRTINY.
	(__do_copy_data): Added new definition for AVRTINY.
	(__do_clear_bss): Replace r17 by r18 to preserve zero reg for AVRTINY.
	(__load_3, __load_4, __xload_1, __xload_2, __xload_3,
	__xload_4, __movmemx_qi, __movmemx_hi): Excluded for AVRTINY.
	* config/avr/lib1funcs-fixed.S: Replaced occurrences of r0/r1 with
	tmp/zero reg macros. Replaced occurrences of sbiw/adiw with wsubi/wadi
	macors.
	   * config/avr/t-avr (LIB1ASMFUNCS): Remove unsupported functions for
	AVRTINY.

	Fix broken long multiplication on tiny arch.

Co-Authored-By: Pitchumani Sivanupandi <pitchumani.s@atmel.com>
Co-Authored-By: Praveen Kumar Kaushik <Praveen_Kumar.Kaushik@atmel.com>
Co-Authored-By: Senthil Kumar Selvaraj <Senthil_Kumar.Selvaraj@atmel.com>
Co-Authored-By: Vidya Praveen <vidya.praveen@atmel.com>
From-SVN: r216525