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1 /* US Software GOFAST floating point library support.
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2 Copyright (C) 1994, 1998, 1999, 2002, 2003, 2004, 2007
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3 Free Software Foundation, Inc.
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4
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5 This file is part of GCC.
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6
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7 GCC is free software; you can redistribute it and/or modify
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8 it under the terms of the GNU General Public License as published by
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9 the Free Software Foundation; either version 3, or (at your option)
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10 any later version.
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11
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12 GCC is distributed in the hope that it will be useful,
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13 but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with GCC; see the file COPYING3. If not see
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19 <http://www.gnu.org/licenses/>. */
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20
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21 /* The US Software GOFAST library requires special optabs support.
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22 This file is intended to be included by config/ARCH/ARCH.c. It
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23 defines one function, gofast_maybe_init_libfuncs, which should be
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24 called from the TARGET_INIT_LIBFUNCS hook. When tm.h has defined
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25 US_SOFTWARE_GOFAST, this function will adjust all the optabs and
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26 libfuncs appropriately. Otherwise it will do nothing. */
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27
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28 static void
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29 gofast_maybe_init_libfuncs (void)
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30 {
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31 #ifdef US_SOFTWARE_GOFAST
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32 int mode;
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33
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34 set_optab_libfunc (add_optab, SFmode, "fpadd");
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35 set_optab_libfunc (add_optab, DFmode, "dpadd");
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36 set_optab_libfunc (sub_optab, SFmode, "fpsub");
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37 set_optab_libfunc (sub_optab, DFmode, "dpsub");
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38 set_optab_libfunc (smul_optab, SFmode, "fpmul");
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39 set_optab_libfunc (smul_optab, DFmode, "dpmul");
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40 set_optab_libfunc (sdiv_optab, SFmode, "fpdiv");
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41 set_optab_libfunc (sdiv_optab, DFmode, "dpdiv");
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42 set_optab_libfunc (cmp_optab, SFmode, "fpcmp");
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43 set_optab_libfunc (cmp_optab, DFmode, "dpcmp");
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44
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45 /* GOFAST does not provide libfuncs for negation, so we use the
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46 standard names. */
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47
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48 /* GCC does not use fpcmp/dpcmp for gt or ge because its own
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49 FP-emulation library returns +1 for both > and unord. So we
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50 leave gt and ge unset, such that, instead of fpcmp(a,b) >[=], we
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51 generate fpcmp(b,a) <[=] 0, which is unambiguous. For unord
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52 libfuncs, we use our own functions, since GOFAST doesn't supply
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53 them. */
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54
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55 set_optab_libfunc (eq_optab, SFmode, "fpcmp");
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56 set_optab_libfunc (ne_optab, SFmode, "fpcmp");
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57 set_optab_libfunc (gt_optab, SFmode, 0);
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58 set_optab_libfunc (ge_optab, SFmode, 0);
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59 set_optab_libfunc (lt_optab, SFmode, "fpcmp");
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60 set_optab_libfunc (le_optab, SFmode, "fpcmp");
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61
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62 set_optab_libfunc (eq_optab, DFmode, "dpcmp");
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63 set_optab_libfunc (ne_optab, DFmode, "dpcmp");
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64 set_optab_libfunc (gt_optab, DFmode, 0);
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65 set_optab_libfunc (ge_optab, DFmode, 0);
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66 set_optab_libfunc (lt_optab, DFmode, "dpcmp");
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67 set_optab_libfunc (le_optab, DFmode, "dpcmp");
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68
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69 set_conv_libfunc (sext_optab, DFmode, SFmode, "fptodp");
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70 set_conv_libfunc (trunc_optab, SFmode, DFmode, "dptofp");
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71
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72 set_conv_libfunc (sfix_optab, SImode, SFmode, "fptosi");
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73 set_conv_libfunc (sfix_optab, SImode, DFmode, "dptoli");
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74 set_conv_libfunc (ufix_optab, SImode, SFmode, "fptoui");
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75 set_conv_libfunc (ufix_optab, SImode, DFmode, "dptoul");
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76
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77 set_conv_libfunc (sfloat_optab, SFmode, SImode, "sitofp");
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78 set_conv_libfunc (sfloat_optab, DFmode, SImode, "litodp");
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79 #endif
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80 }
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