[Bug target/54222] [avr] Implement fixed-point support

["gjl at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54222

Georg-Johann Lay <gjl at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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           Keywords|                            |patch

--- Comment #3 from Georg-Johann Lay <gjl at gcc dot gnu.org> 2012-08-11 10:26:19 UTC ---
...and here is the respective ChangeLogs for attachment 27988 from comment #2:

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.
    * 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.

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): Return true.
    (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_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.