281 lines
9.1 KiB
C
281 lines
9.1 KiB
C
/* Built-in and inline functions for gcj
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Copyright (C) 2001, 2003, 2004, 2005
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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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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 "coretypes.h"
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#include "tm.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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static tree max_builtin (tree, tree);
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static tree min_builtin (tree, tree);
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static tree abs_builtin (tree, tree);
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static tree java_build_function_call_expr (tree, tree);
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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 (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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enum built_in_function builtin_code;
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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, 0 },
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{ { "java.lang.Math" }, { "max" }, max_builtin, 0 },
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{ { "java.lang.Math" }, { "abs" }, abs_builtin, 0 },
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{ { "java.lang.Math" }, { "acos" }, NULL, BUILT_IN_ACOS },
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{ { "java.lang.Math" }, { "asin" }, NULL, BUILT_IN_ASIN },
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{ { "java.lang.Math" }, { "atan" }, NULL, BUILT_IN_ATAN },
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{ { "java.lang.Math" }, { "atan2" }, NULL, BUILT_IN_ATAN2 },
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{ { "java.lang.Math" }, { "ceil" }, NULL, BUILT_IN_CEIL },
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{ { "java.lang.Math" }, { "cos" }, NULL, BUILT_IN_COS },
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{ { "java.lang.Math" }, { "exp" }, NULL, BUILT_IN_EXP },
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{ { "java.lang.Math" }, { "floor" }, NULL, BUILT_IN_FLOOR },
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{ { "java.lang.Math" }, { "log" }, NULL, BUILT_IN_LOG },
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{ { "java.lang.Math" }, { "pow" }, NULL, BUILT_IN_POW },
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{ { "java.lang.Math" }, { "sin" }, NULL, BUILT_IN_SIN },
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{ { "java.lang.Math" }, { "sqrt" }, NULL, BUILT_IN_SQRT },
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{ { "java.lang.Math" }, { "tan" }, NULL, BUILT_IN_TAN },
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{ { NULL }, { NULL }, NULL, END_BUILTINS }
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};
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/* Internal functions which implement various builtin conversions. */
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static tree
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max_builtin (tree method_return_type, tree method_arguments)
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{
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return fold_build2 (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 (tree method_return_type, tree method_arguments)
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{
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return fold_build2 (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 (tree method_return_type, tree method_arguments)
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{
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return fold_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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java_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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return fold_build3 (CALL_EXPR, TREE_TYPE (TREE_TYPE (fn)),
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call_expr, arglist, NULL_TREE);
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}
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#define BUILTIN_NOTHROW 1
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#define BUILTIN_CONST 2
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/* Define a single builtin. */
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static void
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define_builtin (enum built_in_function val,
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const char *name,
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tree type,
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const char *libname,
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int flags)
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{
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tree decl;
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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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SET_DECL_ASSEMBLER_NAME (decl, get_identifier (libname));
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pushdecl (decl);
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DECL_BUILT_IN_CLASS (decl) = BUILT_IN_NORMAL;
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DECL_FUNCTION_CODE (decl) = val;
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if (flags & BUILTIN_NOTHROW)
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TREE_NOTHROW (decl) = 1;
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if (flags & BUILTIN_CONST)
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TREE_READONLY (decl) = 1;
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implicit_built_in_decls[val] = decl;
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built_in_decls[val] = decl;
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}
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/* Initialize the builtins. */
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void
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initialize_builtins (void)
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{
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tree double_ftype_double, double_ftype_double_double;
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tree float_ftype_float, float_ftype_float_float;
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tree boolean_ftype_boolean_boolean;
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tree t;
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int i;
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for (i = 0; java_builtins[i].builtin_code != END_BUILTINS; ++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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t = tree_cons (NULL_TREE, float_type_node, end_params_node);
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float_ftype_float = build_function_type (float_type_node, t);
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t = tree_cons (NULL_TREE, float_type_node, t);
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float_ftype_float_float = build_function_type (float_type_node, t);
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t = tree_cons (NULL_TREE, double_type_node, end_params_node);
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double_ftype_double = build_function_type (double_type_node, t);
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t = tree_cons (NULL_TREE, double_type_node, t);
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double_ftype_double_double = build_function_type (double_type_node, t);
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define_builtin (BUILT_IN_FMOD, "__builtin_fmod",
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double_ftype_double_double, "fmod", BUILTIN_CONST);
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define_builtin (BUILT_IN_FMODF, "__builtin_fmodf",
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float_ftype_float_float, "fmodf", BUILTIN_CONST);
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define_builtin (BUILT_IN_ACOS, "__builtin_acos",
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double_ftype_double, "_ZN4java4lang4Math4acosEJdd",
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BUILTIN_CONST);
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define_builtin (BUILT_IN_ASIN, "__builtin_asin",
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double_ftype_double, "_ZN4java4lang4Math4asinEJdd",
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BUILTIN_CONST);
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define_builtin (BUILT_IN_ATAN, "__builtin_atan",
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double_ftype_double, "_ZN4java4lang4Math4atanEJdd",
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BUILTIN_CONST);
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define_builtin (BUILT_IN_ATAN2, "__builtin_atan2",
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double_ftype_double_double, "_ZN4java4lang4Math5atan2EJddd",
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BUILTIN_CONST);
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define_builtin (BUILT_IN_CEIL, "__builtin_ceil",
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double_ftype_double, "_ZN4java4lang4Math4ceilEJdd",
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BUILTIN_CONST);
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define_builtin (BUILT_IN_COS, "__builtin_cos",
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double_ftype_double, "_ZN4java4lang4Math3cosEJdd",
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BUILTIN_CONST);
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define_builtin (BUILT_IN_EXP, "__builtin_exp",
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double_ftype_double, "_ZN4java4lang4Math3expEJdd",
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BUILTIN_CONST);
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define_builtin (BUILT_IN_FLOOR, "__builtin_floor",
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double_ftype_double, "_ZN4java4lang4Math5floorEJdd",
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BUILTIN_CONST);
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define_builtin (BUILT_IN_LOG, "__builtin_log",
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double_ftype_double, "_ZN4java4lang4Math3logEJdd",
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BUILTIN_CONST);
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define_builtin (BUILT_IN_POW, "__builtin_pow",
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double_ftype_double_double, "_ZN4java4lang4Math3powEJddd",
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BUILTIN_CONST);
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define_builtin (BUILT_IN_SIN, "__builtin_sin",
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double_ftype_double, "_ZN4java4lang4Math3sinEJdd",
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BUILTIN_CONST);
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define_builtin (BUILT_IN_SQRT, "__builtin_sqrt",
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double_ftype_double, "_ZN4java4lang4Math4sqrtEJdd",
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BUILTIN_CONST);
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define_builtin (BUILT_IN_TAN, "__builtin_tan",
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double_ftype_double, "_ZN4java4lang4Math3tanEJdd",
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BUILTIN_CONST);
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t = tree_cons (NULL_TREE, boolean_type_node, end_params_node);
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t = tree_cons (NULL_TREE, boolean_type_node, t);
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boolean_ftype_boolean_boolean = build_function_type (boolean_type_node, t);
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define_builtin (BUILT_IN_EXPECT, "__builtin_expect",
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boolean_ftype_boolean_boolean,
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"__builtin_expect",
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BUILTIN_CONST | BUILTIN_NOTHROW);
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build_common_builtin_nodes ();
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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 (tree method, 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].builtin_code != END_BUILTINS; ++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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tree fn;
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if (java_builtins[i].creator != NULL)
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return (*java_builtins[i].creator) (method_return_type,
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method_arguments);
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fn = built_in_decls[java_builtins[i].builtin_code];
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if (fn == NULL_TREE)
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return NULL_TREE;
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return java_build_function_call_expr (fn, 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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