Split up optabs.[hc]

optabs.[hc] is a bit of a behemoth.  It includes basic functions for querying
what a target can do, related tree- and gimple-level query functions,
related rtl-level query functions, and the functions that actually
generate code.  Some gimple optimisations therefore need:

#include "insn-config.h"
#include "expmed.h"
#include "dojump.h"
#include "explow.h"
#include "emit-rtl.h"
#include "varasm.h"
#include "stmt.h"
#include "expr.h"

purely to query whether the target has support for a particular operation.

This patch splits optabs up as follows:

      - optabs-query.[hc]: IL-independent functions for querying what a target
          can do natively.
      - optabs-tree.[hc]: tree and gimple query functions (an extension of
          optabs-query.[hc]).
      - optabs-libfuncs.[hc]: optabs-specific libfuncs (an extension of
          libfuncs.h)
      - optabs.h: For now includes optabs-query.h and optabs-libfuncs.h.

Only two files outside optabs need to include both optabs.h and
optabs-tree.h: expr.c and function.c.  I think that's expected given
that both are related to expand.

It might be good to split optabs.h further, but this is already quite
a big patch.

I changed can_conditionally_move_p from returning an int to returning
a bool and fixed a few formatting glitches.  There should be no other
changes to the functions themselves.

gcc/
	* Makefile.in (OBJS): Add optabs-libfuncs.o, optabs-query.o
	and optabs-tree.o.
	(GTFILES): Replace optabs.c with optabs-libfunc.c.
	* genopinit.c (main): Add an include guard to insn-opinit.h.
	Protect the rtx_code parts with NUM_RTX_CODE.
	* optabs.h: Split parts out to...
	* optabs-libfuncs.h, optabs-query.h, optabs-tree.h: ...these
	new files.
	* optabs.c: Split parts out to...
	* optabs-libfuncs.c, optabs-query.c, optabs-tree.c: ...these
	new files.
	* cilk-common.c: Include optabs-query.h rather than optabs.h.
	* fold-const.c: Likewise.
	* target-globals.c: Likewise.
	* tree-if-conv.c: Likewise.
	* tree-ssa-forwprop.c: Likewise.
	* tree-ssa-loop-prefetch.c: Likewise.
	* tree-ssa-math-opts.c: Include optabs-tree.h rather than
	optabs.h.  Remove unncessary include files.
	* tree-ssa-phiopt.c: Likewise.
	* tree-ssa-reassoc.c: Likewise.
	* tree-switch-conversion.c: Likewise.
	* tree-vect-data-refs.c: Likewise.
	* tree-vect-generic.c: Likewise.
	* tree-vect-loop.c: Likewise.
	* tree-vect-patterns.c: Likewise.
	* tree-vect-slp.c: Likewise.
	* tree-vect-stmts.c: Likewise.
	* tree-vrp.c: Likewise.
	* toplev.c: Include optabs-query.h and optabs-libfuncs.h
	rather than optabs.h.
	* expr.c: Include optabs-tree.h.
	* function.c: Likewise.

From-SVN: r227865

1 files changed, 77 insertions, 0 deletions

diff --git a/gcc/optabs-libfuncs.h b/gcc/optabs-libfuncs.h
new file mode 100644
index 0000000..4e43c80
--- /dev/null
+++ b/gcc/optabs-libfuncs.h
@@ -0,0 +1,77 @@
+/* Mapping from optabs to underlying library functions
+   Copyright (C) 2001-2015 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+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 3, or (at your option)
+any later version.
+
+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 GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef GCC_OPTABS_LIBFUNCS_H
+#define GCC_OPTABS_LIBFUNCS_H
+
+#include "insn-opinit.h"
+
+rtx convert_optab_libfunc (convert_optab, machine_mode, machine_mode);
+rtx optab_libfunc (optab, machine_mode);
+
+void gen_int_libfunc (optab, const char *, char, machine_mode);
+void gen_fp_libfunc (optab, const char *, char, machine_mode);
+void gen_fixed_libfunc (optab, const char *, char, machine_mode);
+void gen_signed_fixed_libfunc (optab, const char *, char, machine_mode);
+void gen_unsigned_fixed_libfunc (optab, const char *, char, machine_mode);
+void gen_int_fp_libfunc (optab, const char *, char, machine_mode);
+void gen_intv_fp_libfunc (optab, const char *, char, machine_mode);
+void gen_int_fp_fixed_libfunc (optab, const char *, char, machine_mode);
+void gen_int_fp_signed_fixed_libfunc (optab, const char *, char, machine_mode);
+void gen_int_fixed_libfunc (optab, const char *, char, machine_mode);
+void gen_int_signed_fixed_libfunc (optab, const char *, char, machine_mode);
+void gen_int_unsigned_fixed_libfunc (optab, const char *, char, machine_mode);
+
+void gen_interclass_conv_libfunc (convert_optab, const char *,
+				  machine_mode, machine_mode);
+void gen_int_to_fp_conv_libfunc (convert_optab, const char *,
+				 machine_mode, machine_mode);
+void gen_ufloat_conv_libfunc (convert_optab, const char *,
+			      machine_mode, machine_mode);
+void gen_int_to_fp_nondecimal_conv_libfunc (convert_optab, const char *,
+					    machine_mode, machine_mode);
+void gen_fp_to_int_conv_libfunc (convert_optab, const char *,
+				 machine_mode, machine_mode);
+void gen_intraclass_conv_libfunc (convert_optab, const char *,
+				  machine_mode, machine_mode);
+void gen_trunc_conv_libfunc (convert_optab, const char *,
+			     machine_mode, machine_mode);
+void gen_extend_conv_libfunc (convert_optab, const char *,
+			      machine_mode, machine_mode);
+void gen_fract_conv_libfunc (convert_optab, const char *,
+			     machine_mode, machine_mode);
+void gen_fractuns_conv_libfunc (convert_optab, const char *,
+				machine_mode, machine_mode);
+void gen_satfract_conv_libfunc (convert_optab, const char *,
+				machine_mode, machine_mode);
+void gen_satfractuns_conv_libfunc (convert_optab, const char *,
+				   machine_mode, machine_mode);
+
+tree build_libfunc_function (const char *);
+rtx init_one_libfunc (const char *);
+rtx set_user_assembler_libfunc (const char *, const char *);
+
+void set_optab_libfunc (optab, machine_mode, const char *);
+void set_conv_libfunc (convert_optab, machine_mode,
+		       machine_mode, const char *);
+
+void init_optabs (void);
+void init_sync_libfuncs (int max);
+
+#endif