/* US Software GOFAST floating point library support.
- Copyright (C) 1994, 1998, 1999 Free Software Foundation, Inc.
+ Copyright (C) 1994, 1998, 1999, 2002, 2003 Free Software Foundation, Inc.
-This file is part of GNU CC.
+This file is part of GCC.
-GNU CC is free software; you can redistribute it and/or modify
+GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
-GNU CC is distributed in the hope that it will be useful,
+GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING. If not, write to
+along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
-/* This is used by fp-bit.c. */
-#define US_SOFTWARE_GOFAST
-
/* The US Software GOFAST library requires special optabs support.
- There is no negation libcall, and several others have names different
- from gcc. This file consolidates the support in one place.
+ This file is intended to be included by config/ARCH/ARCH.c. It
+ defines one function, gofast_maybe_init_libfuncs, which should be
+ called from the TARGET_INIT_LIBFUNCS hook. When tm.h has defined
+ US_SOFTWARE_GOFAST, this function will adjust all the optabs and
+ libfuncs appropriately. Otherwise it will do nothing. */
+
+static void
+gofast_maybe_init_libfuncs (void)
+{
+#ifdef US_SOFTWARE_GOFAST
+ int mode;
+
+ set_optab_libfunc (add_optab, SFmode, "fpadd");
+ set_optab_libfunc (add_optab, DFmode, "dpadd");
+ set_optab_libfunc (sub_optab, SFmode, "fpsub");
+ set_optab_libfunc (sub_optab, DFmode, "dpsub");
+ set_optab_libfunc (smul_optab, SFmode, "fpmul");
+ set_optab_libfunc (smul_optab, DFmode, "dpmul");
+ set_optab_libfunc (sdiv_optab, SFmode, "fpdiv");
+ set_optab_libfunc (sdiv_optab, DFmode, "dpdiv");
+ set_optab_libfunc (cmp_optab, SFmode, "fpcmp");
+ set_optab_libfunc (cmp_optab, DFmode, "dpcmp");
+
+ /* GOFAST does not provide libfuncs for negation, so we use the
+ standard names. */
+
+ /* GCC does not use fpcmp/dpcmp for gt or ge because its own
+ FP-emulation library returns +1 for both > and unord. So we
+ leave gt and ge unset, such that, instead of fpcmp(a,b) >[=], we
+ generate fpcmp(b,a) <[=] 0, which is unambiguous. For unord
+ libfuncs, we use our own functions, since GOFAST doesn't supply
+ them. */
- The basic plan is to leave gcc proper alone and via some hook fix things
- after the optabs have been set up. Our main entry point is
- INIT_GOFAST_OPTABS. */
+ set_optab_libfunc (eq_optab, SFmode, "fpcmp");
+ set_optab_libfunc (ne_optab, SFmode, "fpcmp");
+ set_optab_libfunc (gt_optab, SFmode, 0);
+ set_optab_libfunc (ge_optab, SFmode, 0);
+ set_optab_libfunc (lt_optab, SFmode, "fpcmp");
+ set_optab_libfunc (le_optab, SFmode, "fpcmp");
-#define INIT_GOFAST_OPTABS \
- do { \
- GOFAST_CLEAR_NEG_FLOAT_OPTAB; \
- GOFAST_RENAME_LIBCALLS; \
- } while (0)
+ set_optab_libfunc (eq_optab, DFmode, "dpcmp");
+ set_optab_libfunc (ne_optab, DFmode, "dpcmp");
+ set_optab_libfunc (gt_optab, DFmode, 0);
+ set_optab_libfunc (ge_optab, DFmode, 0);
+ set_optab_libfunc (lt_optab, DFmode, "dpcmp");
+ set_optab_libfunc (le_optab, DFmode, "dpcmp");
-#define GOFAST_CLEAR_NEG_FLOAT_OPTAB \
- do { \
- int mode; \
- for (mode = SFmode; (int) mode <= (int) TFmode; \
- mode = (enum machine_mode) ((int) mode + 1)) \
- neg_optab->handlers[(int) mode].libfunc = NULL_RTX; \
- } while (0)
+ set_conv_libfunc (sext_optab, DFmode, SFmode, "fptodp");
+ set_conv_libfunc (trunc_optab, SFmode, DFmode, "dptofp");
-#define GOFAST_RENAME_LIBCALLS \
- add_optab->handlers[(int) SFmode].libfunc = init_one_libfunc ("fpadd"); \
- add_optab->handlers[(int) DFmode].libfunc = init_one_libfunc ("dpadd"); \
- sub_optab->handlers[(int) SFmode].libfunc = init_one_libfunc ("fpsub"); \
- sub_optab->handlers[(int) DFmode].libfunc = init_one_libfunc ("dpsub"); \
- smul_optab->handlers[(int) SFmode].libfunc = init_one_libfunc ("fpmul"); \
- smul_optab->handlers[(int) DFmode].libfunc = init_one_libfunc ("dpmul"); \
- flodiv_optab->handlers[(int) SFmode].libfunc = init_one_libfunc ("fpdiv"); \
- flodiv_optab->handlers[(int) DFmode].libfunc = init_one_libfunc ("dpdiv"); \
- cmp_optab->handlers[(int) SFmode].libfunc = init_one_libfunc ("fpcmp"); \
- cmp_optab->handlers[(int) DFmode].libfunc = init_one_libfunc ("dpcmp"); \
-\
- extendsfdf2_libfunc = init_one_libfunc ("fptodp"); \
- truncdfsf2_libfunc = init_one_libfunc ("dptofp"); \
-\
- eqsf2_libfunc = init_one_libfunc ("fpcmp"); \
- nesf2_libfunc = init_one_libfunc ("fpcmp"); \
- gtsf2_libfunc = init_one_libfunc ("fpcmp"); \
- gesf2_libfunc = init_one_libfunc ("fpcmp"); \
- ltsf2_libfunc = init_one_libfunc ("fpcmp"); \
- lesf2_libfunc = init_one_libfunc ("fpcmp"); \
-\
- eqdf2_libfunc = init_one_libfunc ("dpcmp"); \
- nedf2_libfunc = init_one_libfunc ("dpcmp"); \
- gtdf2_libfunc = init_one_libfunc ("dpcmp"); \
- gedf2_libfunc = init_one_libfunc ("dpcmp"); \
- ltdf2_libfunc = init_one_libfunc ("dpcmp"); \
- ledf2_libfunc = init_one_libfunc ("dpcmp"); \
-\
- eqxf2_libfunc = NULL_RTX; \
- nexf2_libfunc = NULL_RTX; \
- gtxf2_libfunc = NULL_RTX; \
- gexf2_libfunc = NULL_RTX; \
- ltxf2_libfunc = NULL_RTX; \
- lexf2_libfunc = NULL_RTX; \
-\
- eqtf2_libfunc = NULL_RTX; \
- netf2_libfunc = NULL_RTX; \
- gttf2_libfunc = NULL_RTX; \
- getf2_libfunc = NULL_RTX; \
- lttf2_libfunc = NULL_RTX; \
- letf2_libfunc = NULL_RTX; \
-\
- floatsisf_libfunc = init_one_libfunc ("sitofp"); \
- floatsidf_libfunc = init_one_libfunc ("litodp"); \
- fixsfsi_libfunc = init_one_libfunc ("fptosi"); \
- fixdfsi_libfunc = init_one_libfunc ("dptoli"); \
- fixunssfsi_libfunc = init_one_libfunc ("fptoui"); \
- fixunsdfsi_libfunc = init_one_libfunc ("dptoul"); \
+ set_conv_libfunc (sfix_optab, SImode, SFmode, "fptosi");
+ set_conv_libfunc (sfix_optab, SImode, DFmode, "dptoli");
+ set_conv_libfunc (ufix_optab, SImode, SFmode, "fptoui");
+ set_conv_libfunc (ufix_optab, SImode, DFmode, "dptoul");
-/* End of GOFAST_RENAME_LIBCALLS */
+ set_conv_libfunc (sfloat_optab, SFmode, SImode, "sitofp");
+ set_conv_libfunc (sfloat_optab, DFmode, SImode, "litodp");
+#endif
+}
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