df061a43b6
PR c++/7099 * builtin-attrs.def: Define new attribute lists for use in builtins.def. * builtins.def [DEF_BUILTIN]: Modify to take an additional ATTRS argument, an enumerated value defined in builtin-attrs.def that represents the attribute list for the builtins. Modify all builtin functions to pass an appropriate attribute list. Specify "abort", "exit", "_exit" and "_Exit" builtins here with their required noreturn attributes. * tree.h (enum_builtin_function): Ignore the additional parameter to DEF_BUILTIN. * builtins.c (built_in_names): Likewise. * c-common.c: (builtin_function_2): Replace the "int noreturn_p" argument with a tree representing the functions attribute list. Pass this "attrs" argument to builtin_function. No longer handle the noreturn_p processing manually. (built_in_attributes): Move the definitions from builtin-attrs.def before c_common_nodes_and_builtins. (c_common_nodes_and_builtins): Handle the new ATTRS parameter in DEF_BUILTIN, passing it to both builtin_function and the changed builtin_function_2. * doc/extend.texi: Document __builtin_abort, __builtin_exit, __builtin__exit and __builtin__Exit. * java/builtins.c (initialize_builtins): Ignore the additional parameter to DEF_BUILTIN. Handle more C/C++ specific junk in the builtins.def file. From-SVN: r55276
353 lines
10 KiB
C
353 lines
10 KiB
C
/* Built-in and inline functions for gcj
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Copyright (C) 2001
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Free Software Foundation, Inc.
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This file is part of GNU CC.
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GNU CC 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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GNU CC 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 GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA.
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Java and all Java-based marks are trademarks or registered trademarks
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of Sun Microsystems, Inc. in the United States and other countries.
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The Free Software Foundation is independent of Sun Microsystems, Inc. */
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/* Written by Tom Tromey <tromey@redhat.com>. */
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#include "config.h"
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#include "system.h"
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#include "tree.h"
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#include "ggc.h"
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#include "flags.h"
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#include "langhooks.h"
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#include "java-tree.h"
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enum builtin_type
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{
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#define DEF_PRIMITIVE_TYPE(NAME, VALUE) NAME,
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#define DEF_FUNCTION_TYPE_0(NAME, RETURN) NAME,
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#define DEF_FUNCTION_TYPE_1(NAME, RETURN, ARG1) NAME,
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#define DEF_FUNCTION_TYPE_2(NAME, RETURN, ARG1, ARG2) NAME,
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#define DEF_FUNCTION_TYPE_3(NAME, RETURN, ARG1, ARG2, ARG3) NAME,
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#define DEF_FUNCTION_TYPE_4(NAME, RETURN, ARG1, ARG2, ARG3, ARG4) NAME,
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#define DEF_FUNCTION_TYPE_VAR_0(NAME, RETURN) NAME,
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#define DEF_FUNCTION_TYPE_VAR_1(NAME, RETURN, ARG1) NAME,
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#define DEF_FUNCTION_TYPE_VAR_2(NAME, RETURN, ARG1, ARG2) NAME,
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#define DEF_POINTER_TYPE(NAME, TYPE) NAME,
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#include "builtin-types.def"
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#undef DEF_PRIMITIVE_TYPE
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#undef DEF_FUNCTION_TYPE_0
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#undef DEF_FUNCTION_TYPE_1
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#undef DEF_FUNCTION_TYPE_2
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#undef DEF_FUNCTION_TYPE_3
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#undef DEF_FUNCTION_TYPE_4
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#undef DEF_FUNCTION_TYPE_VAR_0
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#undef DEF_FUNCTION_TYPE_VAR_1
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#undef DEF_FUNCTION_TYPE_VAR_2
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#undef DEF_POINTER_TYPE
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BT_LAST
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};
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static tree max_builtin PARAMS ((tree, tree));
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static tree min_builtin PARAMS ((tree, tree));
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static tree abs_builtin PARAMS ((tree, tree));
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static tree cos_builtin PARAMS ((tree, tree));
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static tree sin_builtin PARAMS ((tree, tree));
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static tree sqrt_builtin PARAMS ((tree, tree));
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static tree build_function_call_expr PARAMS ((tree, tree));
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static void define_builtin PARAMS ((enum built_in_function,
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const char *,
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enum built_in_class,
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tree, int));
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static tree define_builtin_type PARAMS ((int, int, int, int, int));
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/* Functions of this type are used to inline a given call. Such a
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function should either return an expression, if the call is to be
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inlined, or NULL_TREE if a real call should be emitted. Arguments
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are method return type and arguments to call. */
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typedef tree builtin_creator_function PARAMS ((tree, tree));
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/* Hold a char*, before initialization, or a tree, after
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initialization. */
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union string_or_tree GTY(())
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{
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const char * GTY ((tag ("0"))) s;
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tree GTY ((tag ("1"))) t;
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};
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/* Used to hold a single builtin record. */
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struct builtin_record GTY(())
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{
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union string_or_tree GTY ((desc ("1"))) class_name;
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union string_or_tree GTY ((desc ("1"))) method_name;
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builtin_creator_function * GTY((skip (""))) creator;
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};
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static GTY(()) struct builtin_record java_builtins[] =
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{
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{ { "java.lang.Math" }, { "min" }, min_builtin },
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{ { "java.lang.Math" }, { "max" }, max_builtin },
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{ { "java.lang.Math" }, { "abs" }, abs_builtin },
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{ { "java.lang.Math" }, { "cos" }, cos_builtin },
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{ { "java.lang.Math" }, { "sin" }, sin_builtin },
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{ { "java.lang.Math" }, { "sqrt" }, sqrt_builtin },
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{ { NULL }, { NULL }, NULL }
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};
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/* This is only used transiently, so we don't mark it as roots for the
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GC. */
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static tree builtin_types[(int) BT_LAST];
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/* Internal functions which implement various builtin conversions. */
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static tree
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max_builtin (method_return_type, method_arguments)
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tree method_return_type, method_arguments;
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{
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return build (MAX_EXPR, method_return_type,
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TREE_VALUE (method_arguments),
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TREE_VALUE (TREE_CHAIN (method_arguments)));
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}
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static tree
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min_builtin (method_return_type, method_arguments)
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tree method_return_type, method_arguments;
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{
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return build (MIN_EXPR, method_return_type,
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TREE_VALUE (method_arguments),
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TREE_VALUE (TREE_CHAIN (method_arguments)));
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}
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static tree
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abs_builtin (method_return_type, method_arguments)
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tree method_return_type, method_arguments;
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{
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return build1 (ABS_EXPR, method_return_type,
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TREE_VALUE (method_arguments));
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}
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/* Mostly copied from ../builtins.c. */
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static tree
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build_function_call_expr (tree fn, tree arglist)
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{
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tree call_expr;
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call_expr = build1 (ADDR_EXPR, build_pointer_type (TREE_TYPE (fn)), fn);
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call_expr = build (CALL_EXPR, TREE_TYPE (TREE_TYPE (fn)),
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call_expr, arglist);
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TREE_SIDE_EFFECTS (call_expr) = 1;
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return call_expr;
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}
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static tree
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cos_builtin (method_return_type, method_arguments)
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tree method_return_type ATTRIBUTE_UNUSED, method_arguments;
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{
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/* FIXME: this assumes that jdouble and double are the same. */
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tree fn = built_in_decls[BUILT_IN_COS];
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if (fn == NULL_TREE)
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return NULL_TREE;
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return build_function_call_expr (fn, method_arguments);
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}
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static tree
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sin_builtin (method_return_type, method_arguments)
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tree method_return_type ATTRIBUTE_UNUSED, method_arguments;
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{
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/* FIXME: this assumes that jdouble and double are the same. */
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tree fn = built_in_decls[BUILT_IN_SIN];
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if (fn == NULL_TREE)
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return NULL_TREE;
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return build_function_call_expr (fn, method_arguments);
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}
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static tree
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sqrt_builtin (method_return_type, method_arguments)
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tree method_return_type ATTRIBUTE_UNUSED, method_arguments;
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{
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/* FIXME: this assumes that jdouble and double are the same. */
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tree fn = built_in_decls[BUILT_IN_SQRT];
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if (fn == NULL_TREE)
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return NULL_TREE;
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return build_function_call_expr (fn, method_arguments);
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}
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/* Define a single builtin. */
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static void
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define_builtin (val, name, class, type, fallback_p)
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enum built_in_function val;
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const char *name;
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enum built_in_class class;
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tree type;
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int fallback_p;
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{
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tree decl;
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if (! name || ! type)
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return;
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if (strncmp (name, "__builtin_", strlen ("__builtin_")) != 0)
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abort ();
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decl = build_decl (FUNCTION_DECL, get_identifier (name), type);
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DECL_EXTERNAL (decl) = 1;
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TREE_PUBLIC (decl) = 1;
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if (fallback_p)
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SET_DECL_ASSEMBLER_NAME (decl,
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get_identifier (name + strlen ("__builtin_")));
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make_decl_rtl (decl, NULL);
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pushdecl (decl);
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DECL_BUILT_IN_CLASS (decl) = class;
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DECL_FUNCTION_CODE (decl) = val;
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built_in_decls[val] = decl;
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}
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/* Compute the type for a builtin. */
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static tree
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define_builtin_type (ret, arg1, arg2, arg3, arg4)
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int ret, arg1, arg2, arg3, arg4;
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{
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tree args;
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if (builtin_types[ret] == NULL_TREE)
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return NULL_TREE;
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args = void_list_node;
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if (arg4 != -1)
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{
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if (builtin_types[arg4] == NULL_TREE)
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return NULL_TREE;
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args = tree_cons (NULL_TREE, builtin_types[arg4], args);
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}
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if (arg3 != -1)
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{
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if (builtin_types[arg3] == NULL_TREE)
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return NULL_TREE;
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args = tree_cons (NULL_TREE, builtin_types[arg3], args);
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}
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if (arg2 != -1)
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{
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if (builtin_types[arg2] == NULL_TREE)
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return NULL_TREE;
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args = tree_cons (NULL_TREE, builtin_types[arg2], args);
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}
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if (arg1 != -1)
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{
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if (builtin_types[arg1] == NULL_TREE)
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return NULL_TREE;
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args = tree_cons (NULL_TREE, builtin_types[arg1], args);
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}
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return build_function_type (builtin_types[ret], args);
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}
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/* Initialize the builtins. */
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void
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initialize_builtins ()
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{
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int i;
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for (i = 0; java_builtins[i].creator != NULL; ++i)
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{
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tree klass_id = get_identifier (java_builtins[i].class_name.s);
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tree m = get_identifier (java_builtins[i].method_name.s);
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java_builtins[i].class_name.t = klass_id;
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java_builtins[i].method_name.t = m;
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}
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void_list_node = end_params_node;
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/* Work around C-specific junk in builtin-types.def. */
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#define intmax_type_node NULL_TREE
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#define c_size_type_node NULL_TREE
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#define const_string_type_node NULL_TREE
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#define va_list_ref_type_node NULL_TREE
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#define va_list_arg_type_node NULL_TREE
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#define flag_isoc99 0
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#define c_language 0
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#define clk_cplusplus 0
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#define DEF_PRIMITIVE_TYPE(ENUM, VALUE) \
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builtin_types[(int) ENUM] = VALUE;
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#define DEF_FUNCTION_TYPE_0(ENUM, RETURN) \
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builtin_types[(int) ENUM] \
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= define_builtin_type (RETURN, -1, -1, -1, -1);
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#define DEF_FUNCTION_TYPE_1(ENUM, RETURN, ARG1) \
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builtin_types[(int) ENUM] \
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= define_builtin_type (RETURN, ARG1, -1, -1, -1);
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#define DEF_FUNCTION_TYPE_2(ENUM, RETURN, ARG1, ARG2) \
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builtin_types[(int) ENUM] \
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= define_builtin_type (RETURN, ARG1, ARG2, -1, -1);
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#define DEF_FUNCTION_TYPE_3(ENUM, RETURN, ARG1, ARG2, ARG3) \
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builtin_types[(int) ENUM] \
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= define_builtin_type (RETURN, ARG1, ARG2, ARG3, -1);
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#define DEF_FUNCTION_TYPE_4(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4) \
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builtin_types[(int) ENUM] \
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= define_builtin_type (RETURN, ARG1, ARG2, ARG3, ARG4);
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#define DEF_FUNCTION_TYPE_VAR_0(ENUM, RETURN) \
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builtin_types[(int) ENUM] = NULL_TREE;
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#define DEF_FUNCTION_TYPE_VAR_1(ENUM, RETURN, ARG1) \
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builtin_types[(int) ENUM] = NULL_TREE;
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#define DEF_FUNCTION_TYPE_VAR_2(ENUM, RETURN, ARG1, ARG2) \
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builtin_types[(int) ENUM] = NULL_TREE;
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#define DEF_POINTER_TYPE(ENUM, TYPE) \
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builtin_types[(int) ENUM] = NULL_TREE;
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#include "builtin-types.def"
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#define DEF_BUILTIN(ENUM, NAME, CLASS, TYPE, LIBTYPE, BOTH_P, \
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FALLBACK_P, NONANSI_P, ATTRS) \
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define_builtin (ENUM, NAME, CLASS, builtin_types[TYPE], FALLBACK_P);
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#include "builtins.def"
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}
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/* If the call matches a builtin, return the
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appropriate builtin expression instead. */
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tree
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check_for_builtin (method, call)
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tree method;
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tree call;
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{
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if (! flag_emit_class_files && optimize && TREE_CODE (call) == CALL_EXPR)
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{
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int i;
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tree method_arguments = TREE_OPERAND (call, 1);
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tree method_class = DECL_NAME (TYPE_NAME (DECL_CONTEXT (method)));
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tree method_name = DECL_NAME (method);
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tree method_return_type = TREE_TYPE (TREE_TYPE (method));
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for (i = 0; java_builtins[i].creator != NULL; ++i)
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{
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if (method_class == java_builtins[i].class_name.t
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&& method_name == java_builtins[i].method_name.t)
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{
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return (*java_builtins[i].creator) (method_return_type,
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method_arguments);
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}
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}
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}
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return call;
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}
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#include "gt-java-builtins.h"
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