82 lines
3.3 KiB
C
82 lines
3.3 KiB
C
/* US Software GOFAST floating point library support.
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Copyright (C) 1994, 1998, 1999, 2002, 2003, 2004
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Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING. If not, write to
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the Free Software Foundation, 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA. */
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/* The US Software GOFAST library requires special optabs support.
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This file is intended to be included by config/ARCH/ARCH.c. It
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defines one function, gofast_maybe_init_libfuncs, which should be
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called from the TARGET_INIT_LIBFUNCS hook. When tm.h has defined
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US_SOFTWARE_GOFAST, this function will adjust all the optabs and
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libfuncs appropriately. Otherwise it will do nothing. */
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static void
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gofast_maybe_init_libfuncs (void)
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{
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#ifdef US_SOFTWARE_GOFAST
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int mode;
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set_optab_libfunc (add_optab, SFmode, "fpadd");
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set_optab_libfunc (add_optab, DFmode, "dpadd");
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set_optab_libfunc (sub_optab, SFmode, "fpsub");
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set_optab_libfunc (sub_optab, DFmode, "dpsub");
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set_optab_libfunc (smul_optab, SFmode, "fpmul");
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set_optab_libfunc (smul_optab, DFmode, "dpmul");
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set_optab_libfunc (sdiv_optab, SFmode, "fpdiv");
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set_optab_libfunc (sdiv_optab, DFmode, "dpdiv");
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set_optab_libfunc (cmp_optab, SFmode, "fpcmp");
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set_optab_libfunc (cmp_optab, DFmode, "dpcmp");
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/* GOFAST does not provide libfuncs for negation, so we use the
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standard names. */
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/* GCC does not use fpcmp/dpcmp for gt or ge because its own
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FP-emulation library returns +1 for both > and unord. So we
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leave gt and ge unset, such that, instead of fpcmp(a,b) >[=], we
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generate fpcmp(b,a) <[=] 0, which is unambiguous. For unord
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libfuncs, we use our own functions, since GOFAST doesn't supply
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them. */
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set_optab_libfunc (eq_optab, SFmode, "fpcmp");
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set_optab_libfunc (ne_optab, SFmode, "fpcmp");
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set_optab_libfunc (gt_optab, SFmode, 0);
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set_optab_libfunc (ge_optab, SFmode, 0);
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set_optab_libfunc (lt_optab, SFmode, "fpcmp");
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set_optab_libfunc (le_optab, SFmode, "fpcmp");
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set_optab_libfunc (eq_optab, DFmode, "dpcmp");
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set_optab_libfunc (ne_optab, DFmode, "dpcmp");
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set_optab_libfunc (gt_optab, DFmode, 0);
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set_optab_libfunc (ge_optab, DFmode, 0);
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set_optab_libfunc (lt_optab, DFmode, "dpcmp");
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set_optab_libfunc (le_optab, DFmode, "dpcmp");
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set_conv_libfunc (sext_optab, DFmode, SFmode, "fptodp");
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set_conv_libfunc (trunc_optab, SFmode, DFmode, "dptofp");
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set_conv_libfunc (sfix_optab, SImode, SFmode, "fptosi");
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set_conv_libfunc (sfix_optab, SImode, DFmode, "dptoli");
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set_conv_libfunc (ufix_optab, SImode, SFmode, "fptoui");
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set_conv_libfunc (ufix_optab, SImode, DFmode, "dptoul");
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set_conv_libfunc (sfloat_optab, SFmode, SImode, "sitofp");
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set_conv_libfunc (sfloat_optab, DFmode, SImode, "litodp");
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#endif
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}
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