gcc/java/builtins.c

   1 /* Built-in and inline functions for gcj
   2    Copyright (C) 2001-2015 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 3, or (at your option)
   9 any later version.
  10
  11 GCC is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 .
  17
  18 .
  19
  20 Java and all Java-based marks are trademarks or registered trademarks
  21 of Sun Microsystems, Inc. in the United States and other countries.
  22 The Free Software Foundation is independent of Sun Microsystems, Inc.  */
  23
  24 /* Written by Tom Tromey <tromey@redhat.com>.  */
  25
  26 /* FIXME: Still need to include rtl.h here (see below).  */
  27 #undef IN_GCC_FRONTEND
  28
  29 #include "config.h"
  30 #include "system.h"
  31 #include "coretypes.h"
  32 #include "tm.h"
  33 #include "alias.h"
  34 #include "tree.h"
  35 #include "options.h"
  36 #include "fold-const.h"
  37 #include "stor-layout.h"
  38 #include "stringpool.h"
  39 #include "flags.h"
  40 #include "langhooks.h"
  41 #include "java-tree.h"
  42
  43 /* FIXME: All these headers are necessary for sync_compare_and_swap.
  44    Front ends should never have to look at that.  */
  45 #include "rtl.h"
  46 #include "insn-codes.h"
  47 #include "function.h"
  48 #include "insn-config.h"
  49 #include "expmed.h"
  50 #include "dojump.h"
  51 #include "explow.h"
  52 #include "calls.h"
  53 #include "emit-rtl.h"
  54 #include "varasm.h"
  55 #include "stmt.h"
  56 #include "expr.h"
  57 #include "optabs.h"
  58
  59 static tree max_builtin (tree, tree);
  60 static tree min_builtin (tree, tree);
  61 static tree abs_builtin (tree, tree);
  62 static tree convert_real (tree, tree);
  63
  64 static tree java_build_function_call_expr (tree, tree);
  65
  66 static tree putObject_builtin (tree, tree);
  67 static tree compareAndSwapInt_builtin (tree, tree);
  68 static tree compareAndSwapLong_builtin (tree, tree);
  69 static tree compareAndSwapObject_builtin (tree, tree);
  70 static tree putVolatile_builtin (tree, tree);
  71 static tree getVolatile_builtin (tree, tree);
  72 static tree VMSupportsCS8_builtin (tree, tree);
  73 \f
  74
  75 /* Functions of this type are used to inline a given call.  Such a
  76    function should either return an expression, if the call is to be
  77    inlined, or NULL_TREE if a real call should be emitted.  Arguments
  78    are method return type and the original CALL_EXPR containing the
  79    arguments to the call.  */
  80 typedef tree builtin_creator_function (tree, tree);
  81
  82 /* Hold a char*, before initialization, or a tree, after
  83    initialization.  */
  84 union GTY(()) string_or_tree {
  85   const char * GTY ((tag ("0"))) s;
  86   tree GTY ((tag ("1"))) t;
  87 };
  88
  89 /* Used to hold a single builtin record.  */
  90 struct GTY(()) builtin_record {
  91   union string_or_tree GTY ((desc ("1"))) class_name;
  92   union string_or_tree GTY ((desc ("1"))) method_name;
  93   builtin_creator_function * GTY((skip)) creator;
  94   enum built_in_function builtin_code;
  95 };
  96
  97 static GTY(()) struct builtin_record java_builtins[] =
  98 {
  99   { { "java.lang.Math" }, { "min" }, min_builtin, (enum built_in_function) 0 },
 100   { { "java.lang.Math" }, { "max" }, max_builtin, (enum built_in_function) 0 },
 101   { { "java.lang.Math" }, { "abs" }, abs_builtin, (enum built_in_function) 0 },
 102   { { "java.lang.Math" }, { "acos" }, NULL, BUILT_IN_ACOS },
 103   { { "java.lang.Math" }, { "asin" }, NULL, BUILT_IN_ASIN },
 104   { { "java.lang.Math" }, { "atan" }, NULL, BUILT_IN_ATAN },
 105   { { "java.lang.Math" }, { "atan2" }, NULL, BUILT_IN_ATAN2 },
 106   { { "java.lang.Math" }, { "ceil" }, NULL, BUILT_IN_CEIL },
 107   { { "java.lang.Math" }, { "cos" }, NULL, BUILT_IN_COS },
 108   { { "java.lang.Math" }, { "exp" }, NULL, BUILT_IN_EXP },
 109   { { "java.lang.Math" }, { "floor" }, NULL, BUILT_IN_FLOOR },
 110   { { "java.lang.Math" }, { "log" }, NULL, BUILT_IN_LOG },
 111   { { "java.lang.Math" }, { "pow" }, NULL, BUILT_IN_POW },
 112   { { "java.lang.Math" }, { "sin" }, NULL, BUILT_IN_SIN },
 113   { { "java.lang.Math" }, { "sqrt" }, NULL, BUILT_IN_SQRT },
 114   { { "java.lang.Math" }, { "tan" }, NULL, BUILT_IN_TAN },
 115   { { "java.lang.Float" }, { "intBitsToFloat" }, convert_real,
 116     (enum built_in_function) 0 },
 117   { { "java.lang.Double" }, { "longBitsToDouble" }, convert_real,
 118     (enum built_in_function) 0 },
 119   { { "java.lang.Float" }, { "floatToRawIntBits" }, convert_real,
 120     (enum built_in_function) 0 },
 121   { { "java.lang.Double" }, { "doubleToRawLongBits" }, convert_real,
 122     (enum built_in_function) 0 },
 123   { { "sun.misc.Unsafe" }, { "putInt" }, putObject_builtin,
 124     (enum built_in_function) 0},
 125   { { "sun.misc.Unsafe" }, { "putLong" }, putObject_builtin,
 126     (enum built_in_function) 0},
 127   { { "sun.misc.Unsafe" }, { "putObject" }, putObject_builtin,
 128   (enum built_in_function) 0},
 129   { { "sun.misc.Unsafe" }, { "compareAndSwapInt" },
 130     compareAndSwapInt_builtin, (enum built_in_function) 0},
 131   { { "sun.misc.Unsafe" }, { "compareAndSwapLong" },
 132     compareAndSwapLong_builtin, (enum built_in_function) 0},
 133   { { "sun.misc.Unsafe" }, { "compareAndSwapObject" },
 134     compareAndSwapObject_builtin, (enum built_in_function) 0},
 135   { { "sun.misc.Unsafe" }, { "putOrderedInt" }, putVolatile_builtin,
 136     (enum built_in_function) 0},
 137   { { "sun.misc.Unsafe" }, { "putOrderedLong" }, putVolatile_builtin,
 138     (enum built_in_function) 0},
 139   { { "sun.misc.Unsafe" }, { "putOrderedObject" }, putVolatile_builtin,
 140     (enum built_in_function) 0},
 141   { { "sun.misc.Unsafe" }, { "putIntVolatile" }, putVolatile_builtin,
 142     (enum built_in_function) 0},
 143   { { "sun.misc.Unsafe" }, { "putLongVolatile" }, putVolatile_builtin,
 144     (enum built_in_function) 0},
 145   { { "sun.misc.Unsafe" }, { "putObjectVolatile" }, putVolatile_builtin,
 146     (enum built_in_function) 0},
 147   { { "sun.misc.Unsafe" }, { "getObjectVolatile" }, getVolatile_builtin,
 148     (enum built_in_function) 0},
 149   { { "sun.misc.Unsafe" }, { "getIntVolatile" }, getVolatile_builtin,
 150     (enum built_in_function) 0},
 151   { { "sun.misc.Unsafe" }, { "getLongVolatile" }, getVolatile_builtin, (enum built_in_function) 0},
 152   { { "sun.misc.Unsafe" }, { "getLong" }, getVolatile_builtin,
 153     (enum built_in_function) 0},
 154   { { "java.util.concurrent.atomic.AtomicLong" }, { "VMSupportsCS8" },
 155     VMSupportsCS8_builtin, (enum built_in_function) 0},
 156   { { NULL }, { NULL }, NULL, END_BUILTINS }
 157 };
 158
 159 \f
 160 /* Internal functions which implement various builtin conversions.  */
 161
 162 static tree
 163 max_builtin (tree method_return_type, tree orig_call)
 164 {
 165   /* MAX_EXPR does not handle -0.0 in the Java style.  */
 166   if (TREE_CODE (method_return_type) == REAL_TYPE)
 167     return NULL_TREE;
 168   return fold_build2 (MAX_EXPR, method_return_type,
 169                       CALL_EXPR_ARG (orig_call, 0),
 170                       CALL_EXPR_ARG (orig_call, 1));
 171 }
 172
 173 static tree
 174 min_builtin (tree method_return_type, tree orig_call)
 175 {
 176   /* MIN_EXPR does not handle -0.0 in the Java style.  */
 177   if (TREE_CODE (method_return_type) == REAL_TYPE)
 178     return NULL_TREE;
 179   return fold_build2 (MIN_EXPR, method_return_type,
 180                       CALL_EXPR_ARG (orig_call, 0),
 181                       CALL_EXPR_ARG (orig_call, 1));
 182 }
 183
 184 static tree
 185 abs_builtin (tree method_return_type, tree orig_call)
 186 {
 187   return fold_build1 (ABS_EXPR, method_return_type,
 188                       CALL_EXPR_ARG (orig_call, 0));
 189 }
 190
 191 /* Construct a new call to FN using the arguments from ORIG_CALL.  */
 192
 193 static tree
 194 java_build_function_call_expr (tree fn, tree orig_call)
 195 {
 196   int nargs = call_expr_nargs (orig_call);
 197   switch (nargs)
 198     {
 199       /* Although we could handle the 0-3 argument cases using the general
 200          logic in the default case, splitting them out permits folding to
 201          be performed without constructing a temporary CALL_EXPR.  */
 202     case 0:
 203       return build_call_expr (fn, 0);
 204     case 1:
 205       return build_call_expr (fn, 1, CALL_EXPR_ARG (orig_call, 0));
 206     case 2:
 207       return build_call_expr (fn, 2,
 208                               CALL_EXPR_ARG (orig_call, 0),
 209                               CALL_EXPR_ARG (orig_call, 1));
 210     case 3:
 211       return build_call_expr (fn, 3,
 212                               CALL_EXPR_ARG (orig_call, 0),
 213                               CALL_EXPR_ARG (orig_call, 1),
 214                               CALL_EXPR_ARG (orig_call, 2));
 215     default:
 216       {
 217         tree fntype = TREE_TYPE (fn);
 218         fn = build1 (ADDR_EXPR, build_pointer_type (fntype), fn);
 219         return fold (build_call_array (TREE_TYPE (fntype),
 220                                        fn, nargs, CALL_EXPR_ARGP (orig_call)));
 221       }
 222     }
 223 }
 224
 225 static tree
 226 convert_real (tree method_return_type, tree orig_call)
 227 {
 228   return build1 (VIEW_CONVERT_EXPR, method_return_type,
 229                  CALL_EXPR_ARG (orig_call, 0));
 230 }
 231
 232 \f
 233
 234 /* Provide builtin support for atomic operations.  These are
 235    documented at length in libjava/sun/misc/Unsafe.java.  */
 236
 237 /* FIXME.  There are still a few things wrong with this logic.  In
 238    particular, atomic writes of multi-word integers are not truly
 239    atomic: this requires more work.
 240
 241    In general, double-word compare-and-swap cannot portably be
 242    implemented, so we need some kind of fallback for 32-bit machines.
 243
 244 */
 245
 246
 247 /* Macros to unmarshal arguments from a CALL_EXPR into a few
 248    variables.  We also convert the offset arg from a long to an
 249    integer that is the same size as a pointer.  */
 250
 251 #define UNMARSHAL3(METHOD_CALL)                                 \
 252 tree this_arg, obj_arg, offset_arg;                                     \
 253 do                                                                      \
 254 {                                                                       \
 255   tree orig_method_call = METHOD_CALL;                                  \
 256   this_arg = CALL_EXPR_ARG (orig_method_call, 0);                       \
 257   obj_arg = CALL_EXPR_ARG (orig_method_call, 1);                        \
 258   offset_arg = fold_convert (java_type_for_size (POINTER_SIZE, 0),      \
 259                              CALL_EXPR_ARG (orig_method_call, 2));      \
 260 }                                                                       \
 261 while (0)
 262
 263 #define UNMARSHAL4(METHOD_CALL)                                 \
 264 tree value_type, this_arg, obj_arg, offset_arg, value_arg;              \
 265 do                                                                      \
 266 {                                                                       \
 267   tree orig_method_call = METHOD_CALL;                                  \
 268   this_arg = CALL_EXPR_ARG (orig_method_call, 0);                       \
 269   obj_arg = CALL_EXPR_ARG (orig_method_call, 1);                        \
 270   offset_arg = fold_convert (java_type_for_size (POINTER_SIZE, 0),      \
 271                              CALL_EXPR_ARG (orig_method_call, 2));      \
 272   value_arg = CALL_EXPR_ARG (orig_method_call, 3);                      \
 273   value_type = TREE_TYPE (value_arg);                                   \
 274 }                                                                       \
 275 while (0)
 276
 277 #define UNMARSHAL5(METHOD_CALL)                                 \
 278 tree value_type, this_arg, obj_arg, offset_arg, expected_arg, value_arg; \
 279 do                                                                      \
 280 {                                                                       \
 281   tree orig_method_call = METHOD_CALL;                                  \
 282   this_arg = CALL_EXPR_ARG (orig_method_call, 0);                       \
 283   obj_arg = CALL_EXPR_ARG (orig_method_call, 1);                        \
 284   offset_arg = fold_convert (java_type_for_size (POINTER_SIZE, 0),      \
 285                              CALL_EXPR_ARG (orig_method_call, 2));      \
 286   expected_arg = CALL_EXPR_ARG (orig_method_call, 3);                   \
 287   value_arg = CALL_EXPR_ARG (orig_method_call, 4);                      \
 288   value_type = TREE_TYPE (value_arg);                                   \
 289 }                                                                       \
 290 while (0)
 291
 292 /* Add an address to an offset, forming a sum.  */
 293
 294 static tree
 295 build_addr_sum (tree type, tree addr, tree offset)
 296 {
 297   tree ptr_type = build_pointer_type (type);
 298   return fold_build_pointer_plus (fold_convert (ptr_type, addr), offset);
 299 }
 300
 301 /* Make sure that this-arg is non-NULL.  This is a security check.  */
 302
 303 static tree
 304 build_check_this (tree stmt, tree this_arg)
 305 {
 306   return build2 (COMPOUND_EXPR, TREE_TYPE (stmt),
 307                  java_check_reference (this_arg, 1), stmt);
 308 }
 309
 310 /* Now the builtins.  These correspond to the primitive functions in
 311    libjava/sun/misc/natUnsafe.cc.  */
 312
 313 static tree
 314 putObject_builtin (tree method_return_type ATTRIBUTE_UNUSED,
 315                    tree orig_call)
 316 {
 317   tree addr, stmt;
 318   UNMARSHAL4 (orig_call);
 319
 320   addr = build_addr_sum (value_type, obj_arg, offset_arg);
 321   stmt = fold_build2 (MODIFY_EXPR, value_type,
 322                       build_java_indirect_ref (value_type, addr,
 323                                                flag_check_references),
 324                       value_arg);
 325
 326   return build_check_this (stmt, this_arg);
 327 }
 328
 329 static tree
 330 compareAndSwapInt_builtin (tree method_return_type ATTRIBUTE_UNUSED,
 331                            tree orig_call)
 332 {
 333   machine_mode mode = TYPE_MODE (int_type_node);
 334   if (can_compare_and_swap_p (mode, flag_use_atomic_builtins))
 335     {
 336       tree addr, stmt;
 337       enum built_in_function fncode = BUILT_IN_SYNC_BOOL_COMPARE_AND_SWAP_4;
 338       UNMARSHAL5 (orig_call);
 339       (void) value_type; /* Avoid set but not used warning.  */
 340
 341       addr = build_addr_sum (int_type_node, obj_arg, offset_arg);
 342       stmt = build_call_expr (builtin_decl_explicit (fncode),
 343                               3, addr, expected_arg, value_arg);
 344
 345       return build_check_this (stmt, this_arg);
 346     }
 347   return NULL_TREE;
 348 }
 349
 350 static tree
 351 compareAndSwapLong_builtin (tree method_return_type ATTRIBUTE_UNUSED,
 352                             tree orig_call)
 353 {
 354   machine_mode mode = TYPE_MODE (long_type_node);
 355   /* We don't trust flag_use_atomic_builtins for multi-word compareAndSwap.
 356      Some machines such as ARM have atomic libfuncs but not the multi-word
 357      versions.  */
 358   if (can_compare_and_swap_p (mode,
 359                               (flag_use_atomic_builtins
 360                                && GET_MODE_SIZE (mode) <= UNITS_PER_WORD)))
 361     {
 362       tree addr, stmt;
 363       enum built_in_function fncode = BUILT_IN_SYNC_BOOL_COMPARE_AND_SWAP_8;
 364       UNMARSHAL5 (orig_call);
 365       (void) value_type; /* Avoid set but not used warning.  */
 366
 367       addr = build_addr_sum (long_type_node, obj_arg, offset_arg);
 368       stmt = build_call_expr (builtin_decl_explicit (fncode),
 369                               3, addr, expected_arg, value_arg);
 370
 371       return build_check_this (stmt, this_arg);
 372     }
 373   return NULL_TREE;
 374 }
 375 static tree
 376 compareAndSwapObject_builtin (tree method_return_type ATTRIBUTE_UNUSED,
 377                               tree orig_call)
 378 {
 379   machine_mode mode = TYPE_MODE (ptr_type_node);
 380   if (can_compare_and_swap_p (mode, flag_use_atomic_builtins))
 381   {
 382     tree addr, stmt;
 383     enum built_in_function builtin;
 384
 385     UNMARSHAL5 (orig_call);
 386     builtin = (POINTER_SIZE == 32
 387                ? BUILT_IN_SYNC_BOOL_COMPARE_AND_SWAP_4
 388                : BUILT_IN_SYNC_BOOL_COMPARE_AND_SWAP_8);
 389
 390     addr = build_addr_sum (value_type, obj_arg, offset_arg);
 391     stmt = build_call_expr (builtin_decl_explicit (builtin),
 392                             3, addr, expected_arg, value_arg);
 393
 394     return build_check_this (stmt, this_arg);
 395   }
 396   return NULL_TREE;
 397 }
 398
 399 static tree
 400 putVolatile_builtin (tree method_return_type ATTRIBUTE_UNUSED,
 401                      tree orig_call)
 402 {
 403   tree addr, stmt, modify_stmt;
 404   UNMARSHAL4 (orig_call);
 405
 406   addr = build_addr_sum (value_type, obj_arg, offset_arg);
 407   addr
 408     = fold_convert (build_pointer_type (build_qualified_type
 409                                         (value_type, TYPE_QUAL_VOLATILE)),
 410                     addr);
 411
 412   stmt = build_call_expr (builtin_decl_explicit (BUILT_IN_SYNC_SYNCHRONIZE), 0);
 413   modify_stmt = fold_build2 (MODIFY_EXPR, value_type,
 414                              build_java_indirect_ref (value_type, addr,
 415                                                       flag_check_references),
 416                              value_arg);
 417   stmt = build2 (COMPOUND_EXPR, TREE_TYPE (modify_stmt),
 418                  stmt, modify_stmt);
 419
 420   return build_check_this (stmt, this_arg);
 421 }
 422
 423 static tree
 424 getVolatile_builtin (tree method_return_type ATTRIBUTE_UNUSED,
 425                      tree orig_call)
 426 {
 427   tree addr, stmt, modify_stmt, tmp;
 428   UNMARSHAL3 (orig_call);
 429   (void) this_arg; /* Avoid set but not used warning.  */
 430
 431   addr = build_addr_sum (method_return_type, obj_arg, offset_arg);
 432   addr
 433     = fold_convert (build_pointer_type (build_qualified_type
 434                                         (method_return_type,
 435                                          TYPE_QUAL_VOLATILE)), addr);
 436
 437   stmt = build_call_expr (builtin_decl_explicit (BUILT_IN_SYNC_SYNCHRONIZE), 0);
 438   tmp = build_decl (BUILTINS_LOCATION, VAR_DECL, NULL, method_return_type);
 439   DECL_IGNORED_P (tmp) = 1;
 440   DECL_ARTIFICIAL (tmp) = 1;
 441   pushdecl (tmp);
 442
 443   modify_stmt = fold_build2 (MODIFY_EXPR, method_return_type,
 444                              tmp,
 445                              build_java_indirect_ref (method_return_type, addr,
 446                                                       flag_check_references));
 447
 448   stmt = build2 (COMPOUND_EXPR, void_type_node, modify_stmt, stmt);
 449   stmt = build2 (COMPOUND_EXPR, method_return_type, stmt, tmp);
 450
 451   return stmt;
 452 }
 453
 454 static tree
 455 VMSupportsCS8_builtin (tree method_return_type,
 456                        tree orig_call ATTRIBUTE_UNUSED)
 457 {
 458   machine_mode mode = TYPE_MODE (long_type_node);
 459   gcc_assert (method_return_type == boolean_type_node);
 460   if (can_compare_and_swap_p (mode, false))
 461     return boolean_true_node;
 462   else
 463     return boolean_false_node;
 464 }
 465
 466 \f
 467
 468 /* Define a single builtin.  */
 469 static void
 470 define_builtin (enum built_in_function val,
 471                 const char *name,
 472                 tree type,
 473                 const char *libname,
 474                 int flags)
 475 {
 476   tree decl;
 477
 478   decl = build_decl (BUILTINS_LOCATION,
 479                      FUNCTION_DECL, get_identifier (name), type);
 480   DECL_EXTERNAL (decl) = 1;
 481   TREE_PUBLIC (decl) = 1;
 482   SET_DECL_ASSEMBLER_NAME (decl, get_identifier (libname));
 483   pushdecl (decl);
 484   DECL_BUILT_IN_CLASS (decl) = BUILT_IN_NORMAL;
 485   DECL_FUNCTION_CODE (decl) = val;
 486   set_call_expr_flags (decl, flags);
 487
 488   set_builtin_decl (val, decl, true);
 489 }
 490
 491 \f
 492
 493 /* Initialize the builtins.  */
 494 void
 495 initialize_builtins (void)
 496 {
 497   tree double_ftype_double, double_ftype_double_double;
 498   tree float_ftype_float_float;
 499   tree boolean_ftype_boolean_boolean;
 500   int i;
 501
 502   for (i = 0; java_builtins[i].builtin_code != END_BUILTINS; ++i)
 503     {
 504       tree klass_id = get_identifier (java_builtins[i].class_name.s);
 505       tree m = get_identifier (java_builtins[i].method_name.s);
 506
 507       java_builtins[i].class_name.t = klass_id;
 508       java_builtins[i].method_name.t = m;
 509     }
 510
 511   void_list_node = end_params_node;
 512
 513   float_ftype_float_float
 514     = build_function_type_list (float_type_node,
 515                                 float_type_node, float_type_node, NULL_TREE);
 516
 517   double_ftype_double
 518     = build_function_type_list (double_type_node, double_type_node, NULL_TREE);
 519   double_ftype_double_double
 520     = build_function_type_list (double_type_node,
 521                                 double_type_node, double_type_node, NULL_TREE);
 522
 523   define_builtin (BUILT_IN_FMOD, "__builtin_fmod",
 524                   double_ftype_double_double, "fmod", ECF_CONST);
 525   define_builtin (BUILT_IN_FMODF, "__builtin_fmodf",
 526                   float_ftype_float_float, "fmodf", ECF_CONST);
 527
 528   define_builtin (BUILT_IN_ACOS, "__builtin_acos",
 529                   double_ftype_double, "_ZN4java4lang4Math4acosEJdd",
 530                   ECF_CONST);
 531   define_builtin (BUILT_IN_ASIN, "__builtin_asin",
 532                   double_ftype_double, "_ZN4java4lang4Math4asinEJdd",
 533                   ECF_CONST);
 534   define_builtin (BUILT_IN_ATAN, "__builtin_atan",
 535                   double_ftype_double, "_ZN4java4lang4Math4atanEJdd",
 536                   ECF_CONST);
 537   define_builtin (BUILT_IN_ATAN2, "__builtin_atan2",
 538                   double_ftype_double_double, "_ZN4java4lang4Math5atan2EJddd",
 539                   ECF_CONST);
 540   define_builtin (BUILT_IN_CEIL, "__builtin_ceil",
 541                   double_ftype_double, "_ZN4java4lang4Math4ceilEJdd",
 542                   ECF_CONST);
 543   define_builtin (BUILT_IN_COS, "__builtin_cos",
 544                   double_ftype_double, "_ZN4java4lang4Math3cosEJdd",
 545                   ECF_CONST);
 546   define_builtin (BUILT_IN_EXP, "__builtin_exp",
 547                   double_ftype_double, "_ZN4java4lang4Math3expEJdd",
 548                   ECF_CONST);
 549   define_builtin (BUILT_IN_FLOOR, "__builtin_floor",
 550                   double_ftype_double, "_ZN4java4lang4Math5floorEJdd",
 551                   ECF_CONST);
 552   define_builtin (BUILT_IN_LOG, "__builtin_log",
 553                   double_ftype_double, "_ZN4java4lang4Math3logEJdd",
 554                   ECF_CONST);
 555   define_builtin (BUILT_IN_POW, "__builtin_pow",
 556                   double_ftype_double_double, "_ZN4java4lang4Math3powEJddd",
 557                   ECF_CONST);
 558   define_builtin (BUILT_IN_SIN, "__builtin_sin",
 559                   double_ftype_double, "_ZN4java4lang4Math3sinEJdd",
 560                   ECF_CONST);
 561   define_builtin (BUILT_IN_SQRT, "__builtin_sqrt",
 562                   double_ftype_double, "_ZN4java4lang4Math4sqrtEJdd",
 563                   ECF_CONST);
 564   define_builtin (BUILT_IN_TAN, "__builtin_tan",
 565                   double_ftype_double, "_ZN4java4lang4Math3tanEJdd",
 566                   ECF_CONST);
 567
 568   boolean_ftype_boolean_boolean
 569     = build_function_type_list (boolean_type_node,
 570                                 boolean_type_node, boolean_type_node,
 571                                 NULL_TREE);
 572   define_builtin (BUILT_IN_EXPECT, "__builtin_expect",
 573                   boolean_ftype_boolean_boolean,
 574                   "__builtin_expect",
 575                   ECF_CONST | ECF_NOTHROW);
 576   define_builtin (BUILT_IN_SYNC_BOOL_COMPARE_AND_SWAP_4,
 577                   "__sync_bool_compare_and_swap_4",
 578                   build_function_type_list (boolean_type_node,
 579                                             int_type_node,
 580                                             build_pointer_type (int_type_node),
 581                                             int_type_node, NULL_TREE),
 582                   "__sync_bool_compare_and_swap_4", ECF_NOTHROW | ECF_LEAF);
 583   define_builtin (BUILT_IN_SYNC_BOOL_COMPARE_AND_SWAP_8,
 584                   "__sync_bool_compare_and_swap_8",
 585                   build_function_type_list (boolean_type_node,
 586                                             long_type_node,
 587                                             build_pointer_type (long_type_node),
 588                                             int_type_node, NULL_TREE),
 589                   "__sync_bool_compare_and_swap_8", ECF_NOTHROW | ECF_LEAF);
 590   define_builtin (BUILT_IN_SYNC_SYNCHRONIZE, "__sync_synchronize",
 591                   build_function_type_list (void_type_node, NULL_TREE),
 592                   "__sync_synchronize", ECF_NOTHROW | ECF_LEAF);
 593
 594   define_builtin (BUILT_IN_RETURN_ADDRESS, "__builtin_return_address",
 595                   build_function_type_list (ptr_type_node, int_type_node, NULL_TREE),
 596                   "__builtin_return_address", ECF_NOTHROW | ECF_LEAF);
 597   define_builtin (BUILT_IN_TRAP, "__builtin_trap",
 598                   build_function_type_list (void_type_node, NULL_TREE),
 599                   "__builtin_trap", ECF_NOTHROW | ECF_LEAF | ECF_NORETURN);
 600   build_common_builtin_nodes ();
 601 }
 602
 603 /* If the call matches a builtin, return the
 604    appropriate builtin expression instead.  */
 605 tree
 606 check_for_builtin (tree method, tree call)
 607 {
 608   if (optimize && TREE_CODE (call) == CALL_EXPR)
 609     {
 610       int i;
 611       tree method_class = DECL_NAME (TYPE_NAME (DECL_CONTEXT (method)));
 612       tree method_name = DECL_NAME (method);
 613       tree method_return_type = TREE_TYPE (TREE_TYPE (method));
 614
 615       for (i = 0; java_builtins[i].builtin_code != END_BUILTINS; ++i)
 616         {
 617           if (method_class == java_builtins[i].class_name.t
 618               && method_name == java_builtins[i].method_name.t)
 619             {
 620               tree fn;
 621
 622               if (java_builtins[i].creator != NULL)
 623                 {
 624                   tree result
 625                     = (*java_builtins[i].creator) (method_return_type, call);
 626                   return result == NULL_TREE ? call : result;
 627                 }
 628
 629               /* Builtin functions emit a direct call which is incompatible
 630                  with the BC-ABI.  */
 631               if (flag_indirect_dispatch)
 632                 return call;
 633               fn = builtin_decl_explicit (java_builtins[i].builtin_code);
 634               if (fn == NULL_TREE)
 635                 return call;
 636               return java_build_function_call_expr (fn, call);
 637             }
 638         }
 639     }
 640   return call;
 641 }
 642
 643 #include "gt-java-builtins.h"