gcc/

	PR target/54222
	* config/avr/avr.md (unspec) <UNSPEC_ROUND>: Add.
	* config/avr/avr-fixed.md (ALL4QA, ALL124QA): New mode iterators.
	(round<mode>3, round<mode>3_const): New expanders for fixed-mode.
	(*round<mode>3.libgcc): New insns for fixed-modes.
	* config/avr/builtins.def (ABSxx): Use a non-NULL LIBNAME.
	(ROUNDxx, COUNTLSxx, BITSxx, xxBITS): New DEF_BUILTINs.
	(ROUNDFX, COUNTLSFX, ABSFX): New DEF_BUILTINs.
	* config/avr/stdfix.h (absFX, bitsFX, FXbits): Remove inline
	implementations.  Define to __builtin_avr_absFX,
	__builtin_avr_bitsFX, __builtin_avr_FXbits, respectively.
	(roundFX, countlsFX): Define to __builtin_avr_roundFX,
	__builtin_avr_countlsFX, respectively.
	* config/avr/avr-c.c (target.h): Include it.
	(enum avr_builtin_id): New enum.
	(avr_resolve_overloaded_builtin): New static function.
	(avr_register_target_pragmas): Use it to set
	targetm.resolve_overloaded_builtin.
	* config/avr/avr.c (avr_init_builtins): Supply myriads of local
	tree nodes used by DEF_BUILTIN.
	(avr_expand_builtin) <AVR_BUILTIN_ROUNDxx>: Sanity-check them.
	(avr_fold_builtin) <AVR_BUILTIN_BITSxx>: Fold to VIEW_COVERT_EXPR.
	<AVR_BUILTIN_xxBITS>: Same.
	
libgcc/
	PR target/54222
	* config/avr/lib2funcs.c: New C sources for modules for libgcc.a.
	* config/avr/lib2-object.mk: New iterator to build objects from it.
	* config/avr/t-avr: Iterate lib2-object.mk to build objects from
	lib2funcs.c.
	(LIB2FUNCS_EXCLUDE): Add _clrsbdi2.
	(LIB1ASMFUNCS): Add: _ssabs_1, _mask1, _ret, _roundqq3, _rounduqq3,
	_round_s2, _round_u2, _round_2_const, _addmask_2, _round_s4,
	_round_u4, _round_4_const, _addmask_4, _round_x8, _rounddq3
	_roundudq3, _roundda3 _rounduda3, _roundta3 _rounduta3.
	* config/avr/lib1funcs-fixed.S: Implement them.

gcc/testsuite/
	PR target/54222
	* gcc.target/avr/torture/builtins-4-roundfx.c: New test.
	* gcc.target/avr/torture/builtins-5-countlsfx.c: New test.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@195878 138bc75d-0d04-0410-961f-82ee72b054a4

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