gcc/java/builtins.c

   1 /* Built-in and inline functions for gcj
   2    Copyright (C) 2001-2013 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 "tree.h"
  34 #include "ggc.h"
  35 #include "flags.h"
  36 #include "langhooks.h"
  37 #include "java-tree.h"
  38
  39 /* FIXME: All these headers are necessary for sync_compare_and_swap.
  40    Front ends should never have to look at that.  */
  41 #include "rtl.h"
  42 #include "insn-codes.h"
  43 #include "expr.h"
  44 #include "optabs.h"
  45
  46 static tree max_builtin (tree, tree);
  47 static tree min_builtin (tree, tree);
  48 static tree abs_builtin (tree, tree);
  49 static tree convert_real (tree, tree);
  50
  51 static tree java_build_function_call_expr (tree, tree);
  52
  53 static tree putObject_builtin (tree, tree);
  54 static tree compareAndSwapInt_builtin (tree, tree);
  55 static tree compareAndSwapLong_builtin (tree, tree);
  56 static tree compareAndSwapObject_builtin (tree, tree);
  57 static tree putVolatile_builtin (tree, tree);
  58 static tree getVolatile_builtin (tree, tree);
  59 static tree VMSupportsCS8_builtin (tree, tree);
  60 \f
  61
  62 /* Functions of this type are used to inline a given call.  Such a
  63    function should either return an expression, if the call is to be
  64    inlined, or NULL_TREE if a real call should be emitted.  Arguments
  65    are method return type and the original CALL_EXPR containing the
  66    arguments to the call.  */
  67 typedef tree builtin_creator_function (tree, tree);
  68
  69 /* Hold a char*, before initialization, or a tree, after
  70    initialization.  */
  71 union GTY(()) string_or_tree {
  72   const char * GTY ((tag ("0"))) s;
  73   tree GTY ((tag ("1"))) t;
  74 };
  75
  76 /* Used to hold a single builtin record.  */
  77 struct GTY(()) builtin_record {
  78   union string_or_tree GTY ((desc ("1"))) class_name;
  79   union string_or_tree GTY ((desc ("1"))) method_name;
  80   builtin_creator_function * GTY((skip)) creator;
  81   enum built_in_function builtin_code;
  82 };
  83
  84 static GTY(()) struct builtin_record java_builtins[] =
  85 {
  86   { { "java.lang.Math" }, { "min" }, min_builtin, (enum built_in_function) 0 },
  87   { { "java.lang.Math" }, { "max" }, max_builtin, (enum built_in_function) 0 },
  88   { { "java.lang.Math" }, { "abs" }, abs_builtin, (enum built_in_function) 0 },
  89   { { "java.lang.Math" }, { "acos" }, NULL, BUILT_IN_ACOS },
  90   { { "java.lang.Math" }, { "asin" }, NULL, BUILT_IN_ASIN },
  91   { { "java.lang.Math" }, { "atan" }, NULL, BUILT_IN_ATAN },
  92   { { "java.lang.Math" }, { "atan2" }, NULL, BUILT_IN_ATAN2 },
  93   { { "java.lang.Math" }, { "ceil" }, NULL, BUILT_IN_CEIL },
  94   { { "java.lang.Math" }, { "cos" }, NULL, BUILT_IN_COS },
  95   { { "java.lang.Math" }, { "exp" }, NULL, BUILT_IN_EXP },
  96   { { "java.lang.Math" }, { "floor" }, NULL, BUILT_IN_FLOOR },
  97   { { "java.lang.Math" }, { "log" }, NULL, BUILT_IN_LOG },
  98   { { "java.lang.Math" }, { "pow" }, NULL, BUILT_IN_POW },
  99   { { "java.lang.Math" }, { "sin" }, NULL, BUILT_IN_SIN },
 100   { { "java.lang.Math" }, { "sqrt" }, NULL, BUILT_IN_SQRT },
 101   { { "java.lang.Math" }, { "tan" }, NULL, BUILT_IN_TAN },
 102   { { "java.lang.Float" }, { "intBitsToFloat" }, convert_real,
 103     (enum built_in_function) 0 },
 104   { { "java.lang.Double" }, { "longBitsToDouble" }, convert_real,
 105     (enum built_in_function) 0 },
 106   { { "java.lang.Float" }, { "floatToRawIntBits" }, convert_real,
 107     (enum built_in_function) 0 },
 108   { { "java.lang.Double" }, { "doubleToRawLongBits" }, convert_real,
 109     (enum built_in_function) 0 },
 110   { { "sun.misc.Unsafe" }, { "putInt" }, putObject_builtin,
 111     (enum built_in_function) 0},
 112   { { "sun.misc.Unsafe" }, { "putLong" }, putObject_builtin,
 113     (enum built_in_function) 0},
 114   { { "sun.misc.Unsafe" }, { "putObject" }, putObject_builtin,
 115   (enum built_in_function) 0},
 116   { { "sun.misc.Unsafe" }, { "compareAndSwapInt" },
 117     compareAndSwapInt_builtin, (enum built_in_function) 0},
 118   { { "sun.misc.Unsafe" }, { "compareAndSwapLong" },
 119     compareAndSwapLong_builtin, (enum built_in_function) 0},
 120   { { "sun.misc.Unsafe" }, { "compareAndSwapObject" },
 121     compareAndSwapObject_builtin, (enum built_in_function) 0},
 122   { { "sun.misc.Unsafe" }, { "putOrderedInt" }, putVolatile_builtin,
 123     (enum built_in_function) 0},
 124   { { "sun.misc.Unsafe" }, { "putOrderedLong" }, putVolatile_builtin,
 125     (enum built_in_function) 0},
 126   { { "sun.misc.Unsafe" }, { "putOrderedObject" }, putVolatile_builtin,
 127     (enum built_in_function) 0},
 128   { { "sun.misc.Unsafe" }, { "putIntVolatile" }, putVolatile_builtin,
 129     (enum built_in_function) 0},
 130   { { "sun.misc.Unsafe" }, { "putLongVolatile" }, putVolatile_builtin,
 131     (enum built_in_function) 0},
 132   { { "sun.misc.Unsafe" }, { "putObjectVolatile" }, putVolatile_builtin,
 133     (enum built_in_function) 0},
 134   { { "sun.misc.Unsafe" }, { "getObjectVolatile" }, getVolatile_builtin,
 135     (enum built_in_function) 0},
 136   { { "sun.misc.Unsafe" }, { "getIntVolatile" }, getVolatile_builtin,
 137     (enum built_in_function) 0},
 138   { { "sun.misc.Unsafe" }, { "getLongVolatile" }, getVolatile_builtin, (enum built_in_function) 0},
 139   { { "sun.misc.Unsafe" }, { "getLong" }, getVolatile_builtin,
 140     (enum built_in_function) 0},
 141   { { "java.util.concurrent.atomic.AtomicLong" }, { "VMSupportsCS8" },
 142     VMSupportsCS8_builtin, (enum built_in_function) 0},
 143   { { NULL }, { NULL }, NULL, END_BUILTINS }
 144 };
 145
 146 \f
 147 /* Internal functions which implement various builtin conversions.  */
 148
 149 static tree
 150 max_builtin (tree method_return_type, tree orig_call)
 151 {
 152   /* MAX_EXPR does not handle -0.0 in the Java style.  */
 153   if (TREE_CODE (method_return_type) == REAL_TYPE)
 154     return NULL_TREE;
 155   return fold_build2 (MAX_EXPR, method_return_type,
 156                       CALL_EXPR_ARG (orig_call, 0),
 157                       CALL_EXPR_ARG (orig_call, 1));
 158 }
 159
 160 static tree
 161 min_builtin (tree method_return_type, tree orig_call)
 162 {
 163   /* MIN_EXPR does not handle -0.0 in the Java style.  */
 164   if (TREE_CODE (method_return_type) == REAL_TYPE)
 165     return NULL_TREE;
 166   return fold_build2 (MIN_EXPR, method_return_type,
 167                       CALL_EXPR_ARG (orig_call, 0),
 168                       CALL_EXPR_ARG (orig_call, 1));
 169 }
 170
 171 static tree
 172 abs_builtin (tree method_return_type, tree orig_call)
 173 {
 174   return fold_build1 (ABS_EXPR, method_return_type,
 175                       CALL_EXPR_ARG (orig_call, 0));
 176 }
 177
 178 /* Construct a new call to FN using the arguments from ORIG_CALL.  */
 179
 180 static tree
 181 java_build_function_call_expr (tree fn, tree orig_call)
 182 {
 183   int nargs = call_expr_nargs (orig_call);
 184   switch (nargs)
 185     {
 186       /* Although we could handle the 0-3 argument cases using the general
 187          logic in the default case, splitting them out permits folding to
 188          be performed without constructing a temporary CALL_EXPR.  */
 189     case 0:
 190       return build_call_expr (fn, 0);
 191     case 1:
 192       return build_call_expr (fn, 1, CALL_EXPR_ARG (orig_call, 0));
 193     case 2:
 194       return build_call_expr (fn, 2,
 195                               CALL_EXPR_ARG (orig_call, 0),
 196                               CALL_EXPR_ARG (orig_call, 1));
 197     case 3:
 198       return build_call_expr (fn, 3,
 199                               CALL_EXPR_ARG (orig_call, 0),
 200                               CALL_EXPR_ARG (orig_call, 1),
 201                               CALL_EXPR_ARG (orig_call, 2));
 202     default:
 203       {
 204         tree fntype = TREE_TYPE (fn);
 205         fn = build1 (ADDR_EXPR, build_pointer_type (fntype), fn);
 206         return fold (build_call_array (TREE_TYPE (fntype),
 207                                        fn, nargs, CALL_EXPR_ARGP (orig_call)));
 208       }
 209     }
 210 }
 211
 212 static tree
 213 convert_real (tree method_return_type, tree orig_call)
 214 {
 215   return build1 (VIEW_CONVERT_EXPR, method_return_type,
 216                  CALL_EXPR_ARG (orig_call, 0));
 217 }
 218
 219 \f
 220
 221 /* Provide builtin support for atomic operations.  These are
 222    documented at length in libjava/sun/misc/Unsafe.java.  */
 223
 224 /* FIXME.  There are still a few things wrong with this logic.  In
 225    particular, atomic writes of multi-word integers are not truly
 226    atomic: this requires more work.
 227
 228    In general, double-word compare-and-swap cannot portably be
 229    implemented, so we need some kind of fallback for 32-bit machines.
 230
 231 */
 232
 233
 234 /* Macros to unmarshal arguments from a CALL_EXPR into a few
 235    variables.  We also convert the offset arg from a long to an
 236    integer that is the same size as a pointer.  */
 237
 238 #define UNMARSHAL3(METHOD_CALL)                                 \
 239 tree this_arg, obj_arg, offset_arg;                                     \
 240 do                                                                      \
 241 {                                                                       \
 242   tree orig_method_call = METHOD_CALL;                                  \
 243   this_arg = CALL_EXPR_ARG (orig_method_call, 0);                       \
 244   obj_arg = CALL_EXPR_ARG (orig_method_call, 1);                        \
 245   offset_arg = fold_convert (java_type_for_size (POINTER_SIZE, 0),      \
 246                              CALL_EXPR_ARG (orig_method_call, 2));      \
 247 }                                                                       \
 248 while (0)
 249
 250 #define UNMARSHAL4(METHOD_CALL)                                 \
 251 tree value_type, this_arg, obj_arg, offset_arg, value_arg;              \
 252 do                                                                      \
 253 {                                                                       \
 254   tree orig_method_call = METHOD_CALL;                                  \
 255   this_arg = CALL_EXPR_ARG (orig_method_call, 0);                       \
 256   obj_arg = CALL_EXPR_ARG (orig_method_call, 1);                        \
 257   offset_arg = fold_convert (java_type_for_size (POINTER_SIZE, 0),      \
 258                              CALL_EXPR_ARG (orig_method_call, 2));      \
 259   value_arg = CALL_EXPR_ARG (orig_method_call, 3);                      \
 260   value_type = TREE_TYPE (value_arg);                                   \
 261 }                                                                       \
 262 while (0)
 263
 264 #define UNMARSHAL5(METHOD_CALL)                                 \
 265 tree value_type, this_arg, obj_arg, offset_arg, expected_arg, value_arg; \
 266 do                                                                      \
 267 {                                                                       \
 268   tree orig_method_call = METHOD_CALL;                                  \
 269   this_arg = CALL_EXPR_ARG (orig_method_call, 0);                       \
 270   obj_arg = CALL_EXPR_ARG (orig_method_call, 1);                        \
 271   offset_arg = fold_convert (java_type_for_size (POINTER_SIZE, 0),      \
 272                              CALL_EXPR_ARG (orig_method_call, 2));      \
 273   expected_arg = CALL_EXPR_ARG (orig_method_call, 3);                   \
 274   value_arg = CALL_EXPR_ARG (orig_method_call, 4);                      \
 275   value_type = TREE_TYPE (value_arg);                                   \
 276 }                                                                       \
 277 while (0)
 278
 279 /* Add an address to an offset, forming a sum.  */
 280
 281 static tree
 282 build_addr_sum (tree type, tree addr, tree offset)
 283 {
 284   tree ptr_type = build_pointer_type (type);
 285   return fold_build_pointer_plus (fold_convert (ptr_type, addr), offset);
 286 }
 287
 288 /* Make sure that this-arg is non-NULL.  This is a security check.  */
 289
 290 static tree
 291 build_check_this (tree stmt, tree this_arg)
 292 {
 293   return build2 (COMPOUND_EXPR, TREE_TYPE (stmt),
 294                  java_check_reference (this_arg, 1), stmt);
 295 }
 296
 297 /* Now the builtins.  These correspond to the primitive functions in
 298    libjava/sun/misc/natUnsafe.cc.  */
 299
 300 static tree
 301 putObject_builtin (tree method_return_type ATTRIBUTE_UNUSED,
 302                    tree orig_call)
 303 {
 304   tree addr, stmt;
 305   UNMARSHAL4 (orig_call);
 306
 307   addr = build_addr_sum (value_type, obj_arg, offset_arg);
 308   stmt = fold_build2 (MODIFY_EXPR, value_type,
 309                       build_java_indirect_ref (value_type, addr,
 310                                                flag_check_references),
 311                       value_arg);
 312
 313   return build_check_this (stmt, this_arg);
 314 }
 315
 316 static tree
 317 compareAndSwapInt_builtin (tree method_return_type ATTRIBUTE_UNUSED,
 318                            tree orig_call)
 319 {
 320   enum machine_mode mode = TYPE_MODE (int_type_node);
 321   if (can_compare_and_swap_p (mode, flag_use_atomic_builtins))
 322     {
 323       tree addr, stmt;
 324       enum built_in_function fncode = BUILT_IN_SYNC_BOOL_COMPARE_AND_SWAP_4;
 325       UNMARSHAL5 (orig_call);
 326       (void) value_type; /* Avoid set but not used warning.  */
 327
 328       addr = build_addr_sum (int_type_node, obj_arg, offset_arg);
 329       stmt = build_call_expr (builtin_decl_explicit (fncode),
 330                               3, addr, expected_arg, value_arg);
 331
 332       return build_check_this (stmt, this_arg);
 333     }
 334   return NULL_TREE;
 335 }
 336
 337 static tree
 338 compareAndSwapLong_builtin (tree method_return_type ATTRIBUTE_UNUSED,
 339                             tree orig_call)
 340 {
 341   enum machine_mode mode = TYPE_MODE (long_type_node);
 342   /* We don't trust flag_use_atomic_builtins for multi-word compareAndSwap.
 343      Some machines such as ARM have atomic libfuncs but not the multi-word
 344      versions.  */
 345   if (can_compare_and_swap_p (mode,
 346                               (flag_use_atomic_builtins
 347                                && GET_MODE_SIZE (mode) <= UNITS_PER_WORD)))
 348     {
 349       tree addr, stmt;
 350       enum built_in_function fncode = BUILT_IN_SYNC_BOOL_COMPARE_AND_SWAP_8;
 351       UNMARSHAL5 (orig_call);
 352       (void) value_type; /* Avoid set but not used warning.  */
 353
 354       addr = build_addr_sum (long_type_node, obj_arg, offset_arg);
 355       stmt = build_call_expr (builtin_decl_explicit (fncode),
 356                               3, addr, expected_arg, value_arg);
 357
 358       return build_check_this (stmt, this_arg);
 359     }
 360   return NULL_TREE;
 361 }
 362 static tree
 363 compareAndSwapObject_builtin (tree method_return_type ATTRIBUTE_UNUSED,
 364                               tree orig_call)
 365 {
 366   enum machine_mode mode = TYPE_MODE (ptr_type_node);
 367   if (can_compare_and_swap_p (mode, flag_use_atomic_builtins))
 368   {
 369     tree addr, stmt;
 370     enum built_in_function builtin;
 371
 372     UNMARSHAL5 (orig_call);
 373     builtin = (POINTER_SIZE == 32
 374                ? BUILT_IN_SYNC_BOOL_COMPARE_AND_SWAP_4
 375                : BUILT_IN_SYNC_BOOL_COMPARE_AND_SWAP_8);
 376
 377     addr = build_addr_sum (value_type, obj_arg, offset_arg);
 378     stmt = build_call_expr (builtin_decl_explicit (builtin),
 379                             3, addr, expected_arg, value_arg);
 380
 381     return build_check_this (stmt, this_arg);
 382   }
 383   return NULL_TREE;
 384 }
 385
 386 static tree
 387 putVolatile_builtin (tree method_return_type ATTRIBUTE_UNUSED,
 388                      tree orig_call)
 389 {
 390   tree addr, stmt, modify_stmt;
 391   UNMARSHAL4 (orig_call);
 392
 393   addr = build_addr_sum (value_type, obj_arg, offset_arg);
 394   addr
 395     = fold_convert (build_pointer_type (build_type_variant (value_type, 0, 1)),
 396                     addr);
 397
 398   stmt = build_call_expr (builtin_decl_explicit (BUILT_IN_SYNC_SYNCHRONIZE), 0);
 399   modify_stmt = fold_build2 (MODIFY_EXPR, value_type,
 400                              build_java_indirect_ref (value_type, addr,
 401                                                       flag_check_references),
 402                              value_arg);
 403   stmt = build2 (COMPOUND_EXPR, TREE_TYPE (modify_stmt),
 404                  stmt, modify_stmt);
 405
 406   return build_check_this (stmt, this_arg);
 407 }
 408
 409 static tree
 410 getVolatile_builtin (tree method_return_type ATTRIBUTE_UNUSED,
 411                      tree orig_call)
 412 {
 413   tree addr, stmt, modify_stmt, tmp;
 414   UNMARSHAL3 (orig_call);
 415   (void) this_arg; /* Avoid set but not used warning.  */
 416
 417   addr = build_addr_sum (method_return_type, obj_arg, offset_arg);
 418   addr
 419     = fold_convert (build_pointer_type (build_type_variant
 420                                         (method_return_type, 0, 1)), addr);
 421
 422   stmt = build_call_expr (builtin_decl_explicit (BUILT_IN_SYNC_SYNCHRONIZE), 0);
 423   tmp = build_decl (BUILTINS_LOCATION, VAR_DECL, NULL, method_return_type);
 424   DECL_IGNORED_P (tmp) = 1;
 425   DECL_ARTIFICIAL (tmp) = 1;
 426   pushdecl (tmp);
 427
 428   modify_stmt = fold_build2 (MODIFY_EXPR, method_return_type,
 429                              tmp,
 430                              build_java_indirect_ref (method_return_type, addr,
 431                                                       flag_check_references));
 432
 433   stmt = build2 (COMPOUND_EXPR, void_type_node, modify_stmt, stmt);
 434   stmt = build2 (COMPOUND_EXPR, method_return_type, stmt, tmp);
 435
 436   return stmt;
 437 }
 438
 439 static tree
 440 VMSupportsCS8_builtin (tree method_return_type,
 441                        tree orig_call ATTRIBUTE_UNUSED)
 442 {
 443   enum machine_mode mode = TYPE_MODE (long_type_node);
 444   gcc_assert (method_return_type == boolean_type_node);
 445   if (can_compare_and_swap_p (mode, false))
 446     return boolean_true_node;
 447   else
 448     return boolean_false_node;
 449 }
 450
 451 \f
 452
 453 /* Define a single builtin.  */
 454 static void
 455 define_builtin (enum built_in_function val,
 456                 const char *name,
 457                 tree type,
 458                 const char *libname,
 459                 int flags)
 460 {
 461   tree decl;
 462
 463   decl = build_decl (BUILTINS_LOCATION,
 464                      FUNCTION_DECL, get_identifier (name), type);
 465   DECL_EXTERNAL (decl) = 1;
 466   TREE_PUBLIC (decl) = 1;
 467   SET_DECL_ASSEMBLER_NAME (decl, get_identifier (libname));
 468   pushdecl (decl);
 469   DECL_BUILT_IN_CLASS (decl) = BUILT_IN_NORMAL;
 470   DECL_FUNCTION_CODE (decl) = val;
 471   set_call_expr_flags (decl, flags);
 472
 473   set_builtin_decl (val, decl, true);
 474 }
 475
 476 \f
 477
 478 /* Initialize the builtins.  */
 479 void
 480 initialize_builtins (void)
 481 {
 482   tree double_ftype_double, double_ftype_double_double;
 483   tree float_ftype_float_float;
 484   tree boolean_ftype_boolean_boolean;
 485   int i;
 486
 487   for (i = 0; java_builtins[i].builtin_code != END_BUILTINS; ++i)
 488     {
 489       tree klass_id = get_identifier (java_builtins[i].class_name.s);
 490       tree m = get_identifier (java_builtins[i].method_name.s);
 491
 492       java_builtins[i].class_name.t = klass_id;
 493       java_builtins[i].method_name.t = m;
 494     }
 495
 496   void_list_node = end_params_node;
 497
 498   float_ftype_float_float
 499     = build_function_type_list (float_type_node,
 500                                 float_type_node, float_type_node, NULL_TREE);
 501
 502   double_ftype_double
 503     = build_function_type_list (double_type_node, double_type_node, NULL_TREE);
 504   double_ftype_double_double
 505     = build_function_type_list (double_type_node,
 506                                 double_type_node, double_type_node, NULL_TREE);
 507
 508   define_builtin (BUILT_IN_FMOD, "__builtin_fmod",
 509                   double_ftype_double_double, "fmod", ECF_CONST);
 510   define_builtin (BUILT_IN_FMODF, "__builtin_fmodf",
 511                   float_ftype_float_float, "fmodf", ECF_CONST);
 512
 513   define_builtin (BUILT_IN_ACOS, "__builtin_acos",
 514                   double_ftype_double, "_ZN4java4lang4Math4acosEJdd",
 515                   ECF_CONST);
 516   define_builtin (BUILT_IN_ASIN, "__builtin_asin",
 517                   double_ftype_double, "_ZN4java4lang4Math4asinEJdd",
 518                   ECF_CONST);
 519   define_builtin (BUILT_IN_ATAN, "__builtin_atan",
 520                   double_ftype_double, "_ZN4java4lang4Math4atanEJdd",
 521                   ECF_CONST);
 522   define_builtin (BUILT_IN_ATAN2, "__builtin_atan2",
 523                   double_ftype_double_double, "_ZN4java4lang4Math5atan2EJddd",
 524                   ECF_CONST);
 525   define_builtin (BUILT_IN_CEIL, "__builtin_ceil",
 526                   double_ftype_double, "_ZN4java4lang4Math4ceilEJdd",
 527                   ECF_CONST);
 528   define_builtin (BUILT_IN_COS, "__builtin_cos",
 529                   double_ftype_double, "_ZN4java4lang4Math3cosEJdd",
 530                   ECF_CONST);
 531   define_builtin (BUILT_IN_EXP, "__builtin_exp",
 532                   double_ftype_double, "_ZN4java4lang4Math3expEJdd",
 533                   ECF_CONST);
 534   define_builtin (BUILT_IN_FLOOR, "__builtin_floor",
 535                   double_ftype_double, "_ZN4java4lang4Math5floorEJdd",
 536                   ECF_CONST);
 537   define_builtin (BUILT_IN_LOG, "__builtin_log",
 538                   double_ftype_double, "_ZN4java4lang4Math3logEJdd",
 539                   ECF_CONST);
 540   define_builtin (BUILT_IN_POW, "__builtin_pow",
 541                   double_ftype_double_double, "_ZN4java4lang4Math3powEJddd",
 542                   ECF_CONST);
 543   define_builtin (BUILT_IN_SIN, "__builtin_sin",
 544                   double_ftype_double, "_ZN4java4lang4Math3sinEJdd",
 545                   ECF_CONST);
 546   define_builtin (BUILT_IN_SQRT, "__builtin_sqrt",
 547                   double_ftype_double, "_ZN4java4lang4Math4sqrtEJdd",
 548                   ECF_CONST);
 549   define_builtin (BUILT_IN_TAN, "__builtin_tan",
 550                   double_ftype_double, "_ZN4java4lang4Math3tanEJdd",
 551                   ECF_CONST);
 552
 553   boolean_ftype_boolean_boolean
 554     = build_function_type_list (boolean_type_node,
 555                                 boolean_type_node, boolean_type_node,
 556                                 NULL_TREE);
 557   define_builtin (BUILT_IN_EXPECT, "__builtin_expect",
 558                   boolean_ftype_boolean_boolean,
 559                   "__builtin_expect",
 560                   ECF_CONST | ECF_NOTHROW);
 561   define_builtin (BUILT_IN_SYNC_BOOL_COMPARE_AND_SWAP_4,
 562                   "__sync_bool_compare_and_swap_4",
 563                   build_function_type_list (boolean_type_node,
 564                                             int_type_node,
 565                                             build_pointer_type (int_type_node),
 566                                             int_type_node, NULL_TREE),
 567                   "__sync_bool_compare_and_swap_4", ECF_NOTHROW | ECF_LEAF);
 568   define_builtin (BUILT_IN_SYNC_BOOL_COMPARE_AND_SWAP_8,
 569                   "__sync_bool_compare_and_swap_8",
 570                   build_function_type_list (boolean_type_node,
 571                                             long_type_node,
 572                                             build_pointer_type (long_type_node),
 573                                             int_type_node, NULL_TREE),
 574                   "__sync_bool_compare_and_swap_8", ECF_NOTHROW | ECF_LEAF);
 575   define_builtin (BUILT_IN_SYNC_SYNCHRONIZE, "__sync_synchronize",
 576                   build_function_type_list (void_type_node, NULL_TREE),
 577                   "__sync_synchronize", ECF_NOTHROW | ECF_LEAF);
 578
 579   define_builtin (BUILT_IN_RETURN_ADDRESS, "__builtin_return_address",
 580                   build_function_type_list (ptr_type_node, int_type_node, NULL_TREE),
 581                   "__builtin_return_address", ECF_NOTHROW | ECF_LEAF);
 582
 583   build_common_builtin_nodes ();
 584 }
 585
 586 /* If the call matches a builtin, return the
 587    appropriate builtin expression instead.  */
 588 tree
 589 check_for_builtin (tree method, tree call)
 590 {
 591   if (optimize && TREE_CODE (call) == CALL_EXPR)
 592     {
 593       int i;
 594       tree method_class = DECL_NAME (TYPE_NAME (DECL_CONTEXT (method)));
 595       tree method_name = DECL_NAME (method);
 596       tree method_return_type = TREE_TYPE (TREE_TYPE (method));
 597
 598       for (i = 0; java_builtins[i].builtin_code != END_BUILTINS; ++i)
 599         {
 600           if (method_class == java_builtins[i].class_name.t
 601               && method_name == java_builtins[i].method_name.t)
 602             {
 603               tree fn;
 604
 605               if (java_builtins[i].creator != NULL)
 606                 {
 607                   tree result
 608                     = (*java_builtins[i].creator) (method_return_type, call);
 609                   return result == NULL_TREE ? call : result;
 610                 }
 611
 612               /* Builtin functions emit a direct call which is incompatible
 613                  with the BC-ABI.  */
 614               if (flag_indirect_dispatch)
 615                 return call;
 616               fn = builtin_decl_explicit (java_builtins[i].builtin_code);
 617               if (fn == NULL_TREE)
 618                 return call;
 619               return java_build_function_call_expr (fn, call);
 620             }
 621         }
 622     }
 623   return call;
 624 }
 625
 626 #include "gt-java-builtins.h"