re PR target/54222 ([avr] Implement fixed-point support)

libgcc/
	PR target/54222
	* config/avr/lib1funcs-fixed.S: New file.
	* config/avr/lib1funcs.S: Include it.  Undefine some divmodsi
	after they are used.
	(neg2, neg4): New macros.
	(__mulqihi3,__umulqihi3,__mulhi3): Rewrite non-MUL variants.
	(__mulhisi3,__umulhisi3,__mulsi3): Rewrite non-MUL variants.
	(__umulhisi3): Speed up MUL variant if there is enough flash.
	* config/avr/avr-lib.h (TA, UTA): Adjust according to gcc's
	avr-modes.def.
	* config/avr/t-avr (LIB1ASMFUNCS): Add: _fractqqsf, _fractuqqsf,
	_fracthqsf, _fractuhqsf, _fracthasf, _fractuhasf, _fractsasf,
	_fractusasf, _fractsfqq, _fractsfuqq, _fractsfhq, _fractsfuhq,
	_fractsfha, _fractsfsa, _mulqq3, _muluqq3, _mulhq3, _muluhq3,
	_mulha3, _muluha3, _mulsa3, _mulusa3, _divqq3, _udivuqq3, _divhq3,
	_udivuhq3, _divha3, _udivuha3, _divsa3, _udivusa3.
	(LIB2FUNCS_EXCLUDE): Add supported functions.

gcc/
	PR target/54222
	* avr-modes.def (HA, SA, DA, TA, UTA): Adjust modes.
	* avr/avr-fixed.md: New file.
	* avr/avr.md: Include it.
	(cc): Add: minus.
	(adjust_len): Add: minus, minus64, ufract, sfract.
	(ALL1, ALL2, ALL4, ORDERED234): New mode iterators.
	(MOVMODE): Add: QQ, UQQ, HQ, UHQ, HA, UHA, SQ, USQ, SA, USA.
	(MPUSH): Add: HQ, UHQ, HA, UHA, SQ, USQ, SA, USA.
	(pushqi1, xload8_A, xload_8, movqi_insn, *reload_inqi, addqi3,
	subqi3, ashlqi3, *ashlqi3, ashrqi3, lshrqi3, *lshrqi3, *cmpqi, 
	cbranchqi4, *cpse.eq): Generalize to handle all 8-bit modes in ALL1.
	(*movhi, reload_inhi, addhi3, *addhi3, addhi3_clobber, subhi3,
	ashlhi3, *ashlhi3_const, ashrhi3, *ashirhi3_const, lshrhi3,
	*lshrhi3_const, *cmphi, cbranchhi4): Generalize to handle all
	16-bit modes in ALL2.
	(subhi3, casesi, strlenhi): Add clobber when expanding minus:HI.
	(*movsi, *reload_insi, addsi3, subsi3, ashlsi3, *ashlsi3_const,
	ashrsi3, *ashrhi3_const, *ashrsi3_const, lshrsi3, *lshrsi3_const,
	*reversed_tstsi, *cmpsi, cbranchsi4): Generalize to handle all
	32-bit modes in ALL4.
	* avr-dimode.md (ALL8): New mode iterator.
	(adddi3, adddi3_insn, adddi3_const_insn, subdi3, subdi3_insn,
	subdi3_const_insn, cbranchdi4, compare_di2,
	compare_const_di2, ashrdi3, lshrdi3, rotldi3, ashldi3_insn,
	ashrdi3_insn, lshrdi3_insn, rotldi3_insn): Generalize to handle
	all 64-bit modes in ALL8.
	* config/avr/avr-protos.h (avr_to_int_mode): New prototype.
	(avr_out_fract, avr_out_minus, avr_out_minus64): New prototypes.
	* config/avr/avr.c (TARGET_FIXED_POINT_SUPPORTED_P): Define to...
	(avr_fixed_point_supported_p): ...this new static function.
	(TARGET_BUILD_BUILTIN_VA_LIST): Define to...
	(avr_build_builtin_va_list): ...this new static function.
	(avr_adjust_type_node): New static function.
	(avr_scalar_mode_supported_p): Allow if ALL_FIXED_POINT_MODE_P.
	(avr_builtin_setjmp_frame_value): Use gen_subhi3 and return new
	pseudo instead of gen_rtx_MINUS.
	(avr_print_operand, avr_operand_rtx_cost): Handle: CONST_FIXED.
	(notice_update_cc): Handle: CC_MINUS.
	(output_movqi): Generalize to handle respective fixed-point modes.
	(output_movhi, output_movsisf, avr_2word_insn_p): Ditto.
	(avr_out_compare, avr_out_plus_1): Also handle fixed-point modes.
	(avr_assemble_integer): Ditto.
	(output_reload_in_const, output_reload_insisf): Ditto.
	(avr_compare_pattern): Skip all modes > 4 bytes.
	(avr_2word_insn_p): Skip movuqq_insn, movqq_insn.
	(avr_out_fract, avr_out_minus, avr_out_minus64): New functions.
	(avr_to_int_mode): New function.
	(adjust_insn_length): Handle: ADJUST_LEN_SFRACT,
	ADJUST_LEN_UFRACT, ADJUST_LEN_MINUS, ADJUST_LEN_MINUS64.
	* config/avr/predicates.md (const0_operand): Allow const_fixed.
	(const_operand, const_or_immediate_operand): New.
	(nonmemory_or_const_operand): New.
	* config/avr/constraints.md (Ynn, Y00, Y01, Y02, Ym1, Ym2, YIJ):
	New constraints.
	* config/avr/avr.h (LONG_LONG_ACCUM_TYPE_SIZE): Define.

From-SVN: r190644

1 files changed, 27 insertions, 0 deletions

diff --git a/gcc/config/avr/avr-modes.def b/gcc/config/avr/avr-modes.def
index 4a16f888ddf..09e6b4983f0 100644
--- a/gcc/config/avr/avr-modes.def
+++ b/gcc/config/avr/avr-modes.def
@@ -1 +1,28 @@
 FRACTIONAL_INT_MODE (PSI, 24, 3);
+
+/* On 8 bit machines it requires fewer instructions for fixed point
+   routines if the decimal place is on a byte boundary which is not
+   the default for signed accum types.  */
+
+ADJUST_IBIT (HA, 7);
+ADJUST_FBIT (HA, 8);
+
+ADJUST_IBIT (SA, 15);
+ADJUST_FBIT (SA, 16);
+
+ADJUST_IBIT (DA, 31);
+ADJUST_FBIT (DA, 32);
+
+/* Make TA and UTA 64 bits wide.
+   128 bit wide modes would be insane on a 8-bit machine.
+   This needs special treatment in avr.c and avr-lib.h.  */
+
+ADJUST_BYTESIZE  (TA, 8);
+ADJUST_ALIGNMENT (TA, 1);
+ADJUST_IBIT (TA, 15);
+ADJUST_FBIT (TA, 48);
+
+ADJUST_BYTESIZE  (UTA, 8);
+ADJUST_ALIGNMENT (UTA, 1);
+ADJUST_IBIT (UTA, 16);
+ADJUST_FBIT (UTA, 48);