Re: PATCH: Enable TFmode for x86

["H.J. Lu" <hjl dot tools at gmail dot com>]

On Wed, Jul 2, 2008 at 7:45 AM, Ian Lance Taylor <iant@google.com> wrote:
> "H.J. Lu" <hjl.tools@gmail.com> writes:
>
>> gcc/
>>
>> 2008-07-01  H.J. Lu  <hongjiu.lu@intel.com>
>>
>>       PR target/36669
>>       * config/i386/libgcc-glibc.ver: New.
>>
>>       * config/i386/libgcc-x86_64-glibc.ver: Removed.
>>
>> 2008-07-01  H.J. Lu  <hongjiu.lu@intel.com>
>>
>>       * config.gcc: Remove i386/t-fprules-softfp64 soft-fp/t-softfp
>>       from tmake_file from i[34567]86-*-darwin*, x86_64-*-darwin*,
>>       i[34567]86-*-linux*, x86_64-*-linux*.  Add
>>       i386/t-fprules-softfp and soft-fp/t-softfp to tmake_file for
>>       i[34567]86-*-darwin*, x86_64-*-darwin*, i[34567]86-*-linux*,
>>       x86_64-*-linux*.  Add i386/t-linux to tmake_file for
>>       i[34567]86-*-linux*, x86_64-*-linux*.
>>
>>       * libgcc-std.ver: Add empty GCC_4.4.0.
>>
>>       * mkmap-symver.awk: Support multiple versions per symbol.
>>
>>       * config/libgcc-glibc.ver: Add %exclude.
>>
>>       * config/i386/i386.c (ix86_init_builtins): Always define
>>       __builtin_fabsq and __builtin_copysignq with fallbacks.
>>       (ix86_expand_builtin): Emit normal call for __builtin_fabsq
>>       and __builtin_copysignq if SSE2 isn't available.
>>
>>       * config/i386/linux.h (LIBGCC2_HAS_TF_MODE): Defined.
>>       (LIBGCC2_TF_CEXT): Likwise.
>>       (TF_SIZE): Likwise.
>>
>>       * config/i386/linux64.h (LIBGCC2_HAS_TF_MODE): Defined as 1.
>>
>>       * config/i386/sfp-machine.h: Moved to libgcc.
>>
>>       * config/i386/sfp-machine.h: New.
>>       * config/i386/t-linux: Likwise.
>>
>>       * config/i386/t-darwin: Remove softfp_wrap_start and
>>       softfp_wrap_end.
>>       * config/i386/t-darwin64: Likewise.
>>
>>       * config/i386/t-fprules-softfp64: Renamed to ...
>>       * config/i386/t-fprules-softfp: This.
>>
>>       * config/i386/t-linux64: Remove SHLIB_MAPFILES, softfp_wrap_start
>>       and softfp_wrap_end.
>>
>> libgcc/
>>
>> 2008-07-01  H.J. Lu  <hongjiu.lu@intel.com>
>>
>>       PR target/36669
>>       * shared-object.mk ($(base)_s$(objext)): Add -DSHARED.
>>
>>       * config/i386/64/_divtc3-compat.c: New.
>>       * config/i386/64/_multc3-compat.c: Likewise.
>>       * config/i386/64/_powitf2-compat.c: Likewise.
>>       * config/i386/64/eqtf2.c: Likewise.
>>       * config/i386/64/getf2.c: Likewise.
>>       * config/i386/64/letf2.c: Likewise.
>>       * config/i386/64/t-fprules-softfp: Likewise.
>>
>> 2008-07-01  H.J. Lu  <hongjiu.lu@intel.com>
>>
>>       * config.host: Add i386/${host_address}/t-fprules-softfp to
>>       tmake_file for i[34567]86-*-darwin*, x86_64-*-darwin*,
>>       i[34567]86-*-linux*, x86_64-*-linux*.
>>
>>       * configure.ac: Set host_address to 64 or 32 for x86.
>>       * configure: Regenerated.
>>
>>       * Makefile.in (config.status): Also depend on
>>       $(srcdir)/config.host.
>>
>>       * config/i386/32/t-fprules-softfp: New.
>>       * config/i386/32/tf-signs.c: Likewise.
>>
>>       * config/i386/64/sfp-machine.h: New. Moved from gcc.
>>
>> 2008-07-01  H.J. Lu  <hongjiu.lu@intel.com>
>>           Uros Bizjak  <ubizjak@gmail.com>
>>
>>       * config/i386/32/sfp-machine.h: New.
>
>
>> +%ifdef __x86_64__
>> +GCC_3.0 {
>> +  __gttf2
>> +  __lttf2
>> +  __netf2
>> +}
>> +
>> +GCC_4.0.0 {
>> +  __divtc3
>> +  __multc3
>> +  __powitf2
>> +}
>
> Please add some comments explaining why we are doing this.
>
>
> This is OK with that change.
>

This is the patch I am checking in.

Thanks.

-- 
H.J.

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