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

[gjl at gcc dot gnu.org]

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

--- Comment #12 from Georg-Johann Lay <gjl at gcc dot gnu.org> 2013-02-08 10:13:45 UTC ---
Author: gjl
Date: Fri Feb  8 10:13:37 2013
New Revision: 195878

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=195878
Log:
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.


Added:
    trunk/gcc/testsuite/gcc.target/avr/torture/builtins-4-roundfx.c
    trunk/gcc/testsuite/gcc.target/avr/torture/builtins-5-countlsfx.c
    trunk/libgcc/config/avr/lib2-object.mk
    trunk/libgcc/config/avr/lib2funcs.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/avr/avr-c.c
    trunk/gcc/config/avr/avr-fixed.md
    trunk/gcc/config/avr/avr.c
    trunk/gcc/config/avr/avr.md
    trunk/gcc/config/avr/builtins.def
    trunk/gcc/config/avr/stdfix.h
    trunk/gcc/testsuite/ChangeLog
    trunk/libgcc/ChangeLog
    trunk/libgcc/config/avr/lib1funcs-fixed.S
    trunk/libgcc/config/avr/lib1funcs.S
    trunk/libgcc/config/avr/t-avr