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comparison src/share/vm/prims/methodHandleWalk.cpp @ 1138:dd57230ba8fe

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6893268: additional dynamic language related optimizations in C2 Summary: C2 needs some additional optimizations to be able to handle MethodHandle invokes and invokedynamic instructions at the best performance. Reviewed-by: kvn, never
author twisti
date Tue, 05 Jan 2010 15:21:25 +0100
parents aa62b9388fce
children 4ce7240d622c
comparison
equal deleted inserted replaced
1137:97125851f396 1138:dd57230ba8fe
27 */ 27 */
28 28
29 #include "incls/_precompiled.incl" 29 #include "incls/_precompiled.incl"
30 #include "incls/_methodHandleWalk.cpp.incl" 30 #include "incls/_methodHandleWalk.cpp.incl"
31 31
32
33 // -----------------------------------------------------------------------------
34 // MethodHandleChain
35
32 void MethodHandleChain::set_method_handle(Handle mh, TRAPS) { 36 void MethodHandleChain::set_method_handle(Handle mh, TRAPS) {
33 if (!java_dyn_MethodHandle::is_instance(mh())) lose("bad method handle", CHECK); 37 if (!java_dyn_MethodHandle::is_instance(mh())) lose("bad method handle", CHECK);
34 38
35 // set current method handle and unpack partially 39 // set current method handle and unpack partially
36 _method_handle = mh; 40 _method_handle = mh;
56 _arg_slot = BoundMethodHandle_vmargslot(); 60 _arg_slot = BoundMethodHandle_vmargslot();
57 oop target = MethodHandle_vmtarget_oop(); 61 oop target = MethodHandle_vmtarget_oop();
58 if (!is_bound() || java_dyn_MethodHandle::is_instance(target)) { 62 if (!is_bound() || java_dyn_MethodHandle::is_instance(target)) {
59 _arg_type = compute_bound_arg_type(target, NULL, _arg_slot, CHECK); 63 _arg_type = compute_bound_arg_type(target, NULL, _arg_slot, CHECK);
60 } else if (target != NULL && target->is_method()) { 64 } else if (target != NULL && target->is_method()) {
61 _arg_type = compute_bound_arg_type(NULL, (methodOop)target, _arg_slot, CHECK); 65 methodOop m = (methodOop) target;
66 _arg_type = compute_bound_arg_type(NULL, m, _arg_slot, CHECK);
62 set_last_method(mh(), CHECK); 67 set_last_method(mh(), CHECK);
63 } else { 68 } else {
64 _is_bound = false; // lose! 69 _is_bound = false; // lose!
65 } 70 }
66 } 71 }
69 } 74 }
70 if (!is_bound() && !is_adapter()) { 75 if (!is_bound() && !is_adapter()) {
71 lose("unrecognized MH type", CHECK); 76 lose("unrecognized MH type", CHECK);
72 } 77 }
73 } 78 }
79
74 80
75 void MethodHandleChain::set_last_method(oop target, TRAPS) { 81 void MethodHandleChain::set_last_method(oop target, TRAPS) {
76 _is_last = true; 82 _is_last = true;
77 klassOop receiver_limit_oop = NULL; 83 klassOop receiver_limit_oop = NULL;
78 int flags = 0; 84 int flags = 0;
86 _last_invoke = Bytecodes::_invokeinterface; 92 _last_invoke = Bytecodes::_invokeinterface;
87 else 93 else
88 _last_invoke = Bytecodes::_invokevirtual; 94 _last_invoke = Bytecodes::_invokevirtual;
89 } 95 }
90 96
97
91 BasicType MethodHandleChain::compute_bound_arg_type(oop target, methodOop m, int arg_slot, TRAPS) { 98 BasicType MethodHandleChain::compute_bound_arg_type(oop target, methodOop m, int arg_slot, TRAPS) {
92 // There is no direct indication of whether the argument is primitive or not. 99 // There is no direct indication of whether the argument is primitive or not.
93 // It is implied by the _vmentry code, and by the MethodType of the target. 100 // It is implied by the _vmentry code, and by the MethodType of the target.
94 // FIXME: Make it explicit MethodHandleImpl refactors out from MethodHandle 101 // FIXME: Make it explicit MethodHandleImpl refactors out from MethodHandle
95 BasicType arg_type = T_VOID; 102 BasicType arg_type = T_VOID;
124 if (arg_type == T_ARRAY) 131 if (arg_type == T_ARRAY)
125 arg_type = T_OBJECT; 132 arg_type = T_OBJECT;
126 return arg_type; 133 return arg_type;
127 } 134 }
128 135
136
129 void MethodHandleChain::lose(const char* msg, TRAPS) { 137 void MethodHandleChain::lose(const char* msg, TRAPS) {
138 assert(false, "lose");
130 _lose_message = msg; 139 _lose_message = msg;
131 if (!THREAD->is_Java_thread() || ((JavaThread*)THREAD)->thread_state() != _thread_in_vm) { 140 if (!THREAD->is_Java_thread() || ((JavaThread*)THREAD)->thread_state() != _thread_in_vm) {
132 // throw a preallocated exception 141 // throw a preallocated exception
133 THROW_OOP(Universe::virtual_machine_error_instance()); 142 THROW_OOP(Universe::virtual_machine_error_instance());
134 } 143 }
135 THROW_MSG(vmSymbols::java_lang_InternalError(), msg); 144 THROW_MSG(vmSymbols::java_lang_InternalError(), msg);
136 } 145 }
146
147
148 // -----------------------------------------------------------------------------
149 // MethodHandleWalker
137 150
138 Bytecodes::Code MethodHandleWalker::conversion_code(BasicType src, BasicType dest) { 151 Bytecodes::Code MethodHandleWalker::conversion_code(BasicType src, BasicType dest) {
139 if (is_subword_type(src)) { 152 if (is_subword_type(src)) {
140 src = T_INT; // all subword src types act like int 153 src = T_INT; // all subword src types act like int
141 } 154 }
168 181
169 // cannot do it in one step, or at all 182 // cannot do it in one step, or at all
170 return Bytecodes::_illegal; 183 return Bytecodes::_illegal;
171 } 184 }
172 185
186
187 // -----------------------------------------------------------------------------
188 // MethodHandleWalker::walk
189 //
173 MethodHandleWalker::ArgToken 190 MethodHandleWalker::ArgToken
174 MethodHandleWalker::walk(TRAPS) { 191 MethodHandleWalker::walk(TRAPS) {
175 walk_incoming_state(CHECK_NULL); 192 ArgToken empty = ArgToken(); // Empty return value.
193
194 walk_incoming_state(CHECK_(empty));
176 195
177 for (;;) { 196 for (;;) {
178 set_method_handle(chain().method_handle_oop()); 197 set_method_handle(chain().method_handle_oop());
179 198
180 assert(_outgoing_argc == argument_count_slow(), "empty slots under control"); 199 assert(_outgoing_argc == argument_count_slow(), "empty slots under control");
183 int conv_op = chain().adapter_conversion_op(); 202 int conv_op = chain().adapter_conversion_op();
184 int arg_slot = chain().adapter_arg_slot(); 203 int arg_slot = chain().adapter_arg_slot();
185 SlotState* arg_state = slot_state(arg_slot); 204 SlotState* arg_state = slot_state(arg_slot);
186 if (arg_state == NULL 205 if (arg_state == NULL
187 && conv_op > sun_dyn_AdapterMethodHandle::OP_RETYPE_RAW) { 206 && conv_op > sun_dyn_AdapterMethodHandle::OP_RETYPE_RAW) {
188 lose("bad argument index", CHECK_NULL); 207 lose("bad argument index", CHECK_(empty));
189 } 208 }
190 209
191 // perform the adapter action 210 // perform the adapter action
192 switch (chain().adapter_conversion_op()) { 211 switch (chain().adapter_conversion_op()) {
193 case sun_dyn_AdapterMethodHandle::OP_RETYPE_ONLY: 212 case sun_dyn_AdapterMethodHandle::OP_RETYPE_ONLY:
194 case sun_dyn_AdapterMethodHandle::OP_RETYPE_RAW:
195 // No changes to arguments; pass the bits through. 213 // No changes to arguments; pass the bits through.
196 // The only difference between the two ops is that the "only" version 214 break;
197 // is fully compatible with the verifier, while the "raw" version 215
198 // performs a few extra bitwise conversions (like long <-> double). 216 case sun_dyn_AdapterMethodHandle::OP_RETYPE_RAW: {
199 break; 217 // To keep the verifier happy, emit bitwise ("raw") conversions as needed.
218 // See MethodHandles::same_basic_type_for_arguments for allowed conversions.
219 Handle incoming_mtype(THREAD, chain().method_type_oop());
220 oop outgoing_mh_oop = chain().vmtarget_oop();
221 if (!java_dyn_MethodHandle::is_instance(outgoing_mh_oop))
222 lose("outgoing target not a MethodHandle", CHECK_(empty));
223 Handle outgoing_mtype(THREAD, java_dyn_MethodHandle::type(outgoing_mh_oop));
224 outgoing_mh_oop = NULL; // GC safety
225
226 int nptypes = java_dyn_MethodType::ptype_count(outgoing_mtype());
227 if (nptypes != java_dyn_MethodType::ptype_count(incoming_mtype()))
228 lose("incoming and outgoing parameter count do not agree", CHECK_(empty));
229
230 for (int i = 0, slot = _outgoing.length() - 1; slot >= 0; slot--) {
231 SlotState* arg_state = slot_state(slot);
232 if (arg_state->_type == T_VOID) continue;
233 ArgToken arg = _outgoing.at(slot)._arg;
234
235 klassOop in_klass = NULL;
236 klassOop out_klass = NULL;
237 BasicType inpbt = java_lang_Class::as_BasicType(java_dyn_MethodType::ptype(incoming_mtype(), i), &in_klass);
238 BasicType outpbt = java_lang_Class::as_BasicType(java_dyn_MethodType::ptype(outgoing_mtype(), i), &out_klass);
239 assert(inpbt == arg.basic_type(), "sanity");
240
241 if (inpbt != outpbt) {
242 vmIntrinsics::ID iid = vmIntrinsics::for_raw_conversion(inpbt, outpbt);
243 if (iid == vmIntrinsics::_none) {
244 lose("no raw conversion method", CHECK_(empty));
245 }
246 ArgToken arglist[2];
247 arglist[0] = arg; // outgoing 'this'
248 arglist[1] = ArgToken(); // sentinel
249 arg = make_invoke(NULL, iid, Bytecodes::_invokestatic, false, 1, &arglist[0], CHECK_(empty));
250 change_argument(inpbt, slot, outpbt, arg);
251 }
252
253 i++; // We need to skip void slots at the top of the loop.
254 }
255
256 BasicType inrbt = java_lang_Class::as_BasicType(java_dyn_MethodType::rtype(incoming_mtype()));
257 BasicType outrbt = java_lang_Class::as_BasicType(java_dyn_MethodType::rtype(outgoing_mtype()));
258 if (inrbt != outrbt) {
259 if (inrbt == T_INT && outrbt == T_VOID) {
260 // See comments in MethodHandles::same_basic_type_for_arguments.
261 } else {
262 assert(false, "IMPLEMENT ME");
263 lose("no raw conversion method", CHECK_(empty));
264 }
265 }
266 break;
267 }
200 268
201 case sun_dyn_AdapterMethodHandle::OP_CHECK_CAST: { 269 case sun_dyn_AdapterMethodHandle::OP_CHECK_CAST: {
202 // checkcast the Nth outgoing argument in place 270 // checkcast the Nth outgoing argument in place
203 klassOop dest_klass = NULL; 271 klassOop dest_klass = NULL;
204 BasicType dest = java_lang_Class::as_BasicType(chain().adapter_arg_oop(), &dest_klass); 272 BasicType dest = java_lang_Class::as_BasicType(chain().adapter_arg_oop(), &dest_klass);
205 assert(dest == T_OBJECT, ""); 273 assert(dest == T_OBJECT, "");
206 assert(dest == arg_state->_type, ""); 274 assert(dest == arg_state->_type, "");
207 arg_state->_arg = make_conversion(T_OBJECT, dest_klass, Bytecodes::_checkcast, arg_state->_arg, CHECK_NULL); 275 ArgToken arg = arg_state->_arg;
276 ArgToken new_arg = make_conversion(T_OBJECT, dest_klass, Bytecodes::_checkcast, arg, CHECK_(empty));
277 assert(arg.index() == new_arg.index(), "should be the same index");
208 debug_only(dest_klass = (klassOop)badOop); 278 debug_only(dest_klass = (klassOop)badOop);
209 break; 279 break;
210 } 280 }
211 281
212 case sun_dyn_AdapterMethodHandle::OP_PRIM_TO_PRIM: { 282 case sun_dyn_AdapterMethodHandle::OP_PRIM_TO_PRIM: {
216 Bytecodes::Code bc = conversion_code(src, dest); 286 Bytecodes::Code bc = conversion_code(src, dest);
217 ArgToken arg = arg_state->_arg; 287 ArgToken arg = arg_state->_arg;
218 if (bc == Bytecodes::_nop) { 288 if (bc == Bytecodes::_nop) {
219 break; 289 break;
220 } else if (bc != Bytecodes::_illegal) { 290 } else if (bc != Bytecodes::_illegal) {
221 arg = make_conversion(dest, NULL, bc, arg, CHECK_NULL); 291 arg = make_conversion(dest, NULL, bc, arg, CHECK_(empty));
222 } else if (is_subword_type(dest)) { 292 } else if (is_subword_type(dest)) {
223 bc = conversion_code(src, T_INT); 293 bc = conversion_code(src, T_INT);
224 if (bc != Bytecodes::_illegal) { 294 if (bc != Bytecodes::_illegal) {
225 arg = make_conversion(dest, NULL, bc, arg, CHECK_NULL); 295 arg = make_conversion(dest, NULL, bc, arg, CHECK_(empty));
226 bc = conversion_code(T_INT, dest); 296 bc = conversion_code(T_INT, dest);
227 arg = make_conversion(dest, NULL, bc, arg, CHECK_NULL); 297 arg = make_conversion(dest, NULL, bc, arg, CHECK_(empty));
228 } 298 }
229 } 299 }
230 if (bc == Bytecodes::_illegal) { 300 if (bc == Bytecodes::_illegal) {
231 lose("bad primitive conversion", CHECK_NULL); 301 lose("bad primitive conversion", CHECK_(empty));
232 } 302 }
233 change_argument(src, arg_slot, dest, arg); 303 change_argument(src, arg_slot, dest, arg);
234 break; 304 break;
235 } 305 }
236 306
237 case sun_dyn_AdapterMethodHandle::OP_REF_TO_PRIM: { 307 case sun_dyn_AdapterMethodHandle::OP_REF_TO_PRIM: {
238 // checkcast to wrapper type & call intValue, etc. 308 // checkcast to wrapper type & call intValue, etc.
239 BasicType dest = chain().adapter_conversion_dest_type(); 309 BasicType dest = chain().adapter_conversion_dest_type();
240 ArgToken arg = arg_state->_arg; 310 ArgToken arg = arg_state->_arg;
241 arg = make_conversion(T_OBJECT, SystemDictionary::box_klass(dest), 311 arg = make_conversion(T_OBJECT, SystemDictionary::box_klass(dest),
242 Bytecodes::_checkcast, arg, CHECK_NULL); 312 Bytecodes::_checkcast, arg, CHECK_(empty));
243 vmIntrinsics::ID unboxer = vmIntrinsics::for_unboxing(dest); 313 vmIntrinsics::ID unboxer = vmIntrinsics::for_unboxing(dest);
244 if (unboxer == vmIntrinsics::_none) { 314 if (unboxer == vmIntrinsics::_none) {
245 lose("no unboxing method", CHECK_NULL); 315 lose("no unboxing method", CHECK_(empty));
246 } 316 }
247 ArgToken arglist[2]; 317 ArgToken arglist[2];
248 arglist[0] = arg; // outgoing 'this' 318 arglist[0] = arg; // outgoing 'this'
249 arglist[1] = NULL; // sentinel 319 arglist[1] = ArgToken(); // sentinel
250 arg = make_invoke(NULL, unboxer, Bytecodes::_invokevirtual, false, 1, &arglist[0], CHECK_NULL); 320 arg = make_invoke(NULL, unboxer, Bytecodes::_invokevirtual, false, 1, &arglist[0], CHECK_(empty));
251 change_argument(T_OBJECT, arg_slot, dest, arg); 321 change_argument(T_OBJECT, arg_slot, dest, arg);
252 break; 322 break;
253 } 323 }
254 324
255 case sun_dyn_AdapterMethodHandle::OP_PRIM_TO_REF: { 325 case sun_dyn_AdapterMethodHandle::OP_PRIM_TO_REF: {
256 // call wrapper type.valueOf 326 // call wrapper type.valueOf
257 BasicType src = chain().adapter_conversion_src_type(); 327 BasicType src = chain().adapter_conversion_src_type();
258 ArgToken arg = arg_state->_arg; 328 ArgToken arg = arg_state->_arg;
259 vmIntrinsics::ID boxer = vmIntrinsics::for_boxing(src); 329 vmIntrinsics::ID boxer = vmIntrinsics::for_boxing(src);
260 if (boxer == vmIntrinsics::_none) { 330 if (boxer == vmIntrinsics::_none) {
261 lose("no boxing method", CHECK_NULL); 331 lose("no boxing method", CHECK_(empty));
262 } 332 }
263 ArgToken arglist[2]; 333 ArgToken arglist[2];
264 arglist[0] = arg; // outgoing value 334 arglist[0] = arg; // outgoing value
265 arglist[1] = NULL; // sentinel 335 arglist[1] = ArgToken(); // sentinel
266 arg = make_invoke(NULL, boxer, Bytecodes::_invokevirtual, false, 1, &arglist[0], CHECK_NULL); 336 assert(false, "I think the argument count must be 1 instead of 0");
337 arg = make_invoke(NULL, boxer, Bytecodes::_invokevirtual, false, 0, &arglist[0], CHECK_(empty));
267 change_argument(src, arg_slot, T_OBJECT, arg); 338 change_argument(src, arg_slot, T_OBJECT, arg);
268 break; 339 break;
269 } 340 }
270 341
271 case sun_dyn_AdapterMethodHandle::OP_SWAP_ARGS: { 342 case sun_dyn_AdapterMethodHandle::OP_SWAP_ARGS: {
272 int dest_arg_slot = chain().adapter_conversion_vminfo(); 343 int dest_arg_slot = chain().adapter_conversion_vminfo();
273 if (!slot_has_argument(dest_arg_slot)) { 344 if (!slot_has_argument(dest_arg_slot)) {
274 lose("bad swap index", CHECK_NULL); 345 lose("bad swap index", CHECK_(empty));
275 } 346 }
276 // a simple swap between two arguments 347 // a simple swap between two arguments
277 SlotState* dest_arg_state = slot_state(dest_arg_slot); 348 SlotState* dest_arg_state = slot_state(dest_arg_slot);
278 SlotState temp = (*dest_arg_state); 349 SlotState temp = (*dest_arg_state);
279 (*dest_arg_state) = (*arg_state); 350 (*dest_arg_state) = (*arg_state);
282 } 353 }
283 354
284 case sun_dyn_AdapterMethodHandle::OP_ROT_ARGS: { 355 case sun_dyn_AdapterMethodHandle::OP_ROT_ARGS: {
285 int dest_arg_slot = chain().adapter_conversion_vminfo(); 356 int dest_arg_slot = chain().adapter_conversion_vminfo();
286 if (!slot_has_argument(dest_arg_slot) || arg_slot == dest_arg_slot) { 357 if (!slot_has_argument(dest_arg_slot) || arg_slot == dest_arg_slot) {
287 lose("bad rotate index", CHECK_NULL); 358 lose("bad rotate index", CHECK_(empty));
288 } 359 }
289 SlotState* dest_arg_state = slot_state(dest_arg_slot); 360 SlotState* dest_arg_state = slot_state(dest_arg_slot);
290 // Rotate the source argument (plus following N slots) into the 361 // Rotate the source argument (plus following N slots) into the
291 // position occupied by the dest argument (plus following N slots). 362 // position occupied by the dest argument (plus following N slots).
292 int rotate_count = type2size[dest_arg_state->_type]; 363 int rotate_count = type2size[dest_arg_state->_type];
308 } 379 }
309 380
310 case sun_dyn_AdapterMethodHandle::OP_DUP_ARGS: { 381 case sun_dyn_AdapterMethodHandle::OP_DUP_ARGS: {
311 int dup_slots = chain().adapter_conversion_stack_pushes(); 382 int dup_slots = chain().adapter_conversion_stack_pushes();
312 if (dup_slots <= 0) { 383 if (dup_slots <= 0) {
313 lose("bad dup count", CHECK_NULL); 384 lose("bad dup count", CHECK_(empty));
314 } 385 }
315 for (int i = 0; i < dup_slots; i++) { 386 for (int i = 0; i < dup_slots; i++) {
316 SlotState* dup = slot_state(arg_slot + 2*i); 387 SlotState* dup = slot_state(arg_slot + 2*i);
317 if (dup == NULL) break; // safety net 388 if (dup == NULL) break; // safety net
318 if (dup->_type != T_VOID) _outgoing_argc += 1; 389 if (dup->_type != T_VOID) _outgoing_argc += 1;
322 } 393 }
323 394
324 case sun_dyn_AdapterMethodHandle::OP_DROP_ARGS: { 395 case sun_dyn_AdapterMethodHandle::OP_DROP_ARGS: {
325 int drop_slots = -chain().adapter_conversion_stack_pushes(); 396 int drop_slots = -chain().adapter_conversion_stack_pushes();
326 if (drop_slots <= 0) { 397 if (drop_slots <= 0) {
327 lose("bad drop count", CHECK_NULL); 398 lose("bad drop count", CHECK_(empty));
328 } 399 }
329 for (int i = 0; i < drop_slots; i++) { 400 for (int i = 0; i < drop_slots; i++) {
330 SlotState* drop = slot_state(arg_slot); 401 SlotState* drop = slot_state(arg_slot);
331 if (drop == NULL) break; // safety net 402 if (drop == NULL) break; // safety net
332 if (drop->_type != T_VOID) _outgoing_argc -= 1; 403 if (drop->_type != T_VOID) _outgoing_argc -= 1;
334 } 405 }
335 break; 406 break;
336 } 407 }
337 408
338 case sun_dyn_AdapterMethodHandle::OP_COLLECT_ARGS: { //NYI, may GC 409 case sun_dyn_AdapterMethodHandle::OP_COLLECT_ARGS: { //NYI, may GC
339 lose("unimplemented", CHECK_NULL); 410 lose("unimplemented", CHECK_(empty));
340 break; 411 break;
341 } 412 }
342 413
343 case sun_dyn_AdapterMethodHandle::OP_SPREAD_ARGS: { 414 case sun_dyn_AdapterMethodHandle::OP_SPREAD_ARGS: {
344 klassOop array_klass_oop = NULL; 415 klassOop array_klass_oop = NULL;
356 debug_only(element_klass_oop = (klassOop)badOop); 427 debug_only(element_klass_oop = (klassOop)badOop);
357 428
358 // Fetch the argument, which we will cast to the required array type. 429 // Fetch the argument, which we will cast to the required array type.
359 assert(arg_state->_type == T_OBJECT, ""); 430 assert(arg_state->_type == T_OBJECT, "");
360 ArgToken array_arg = arg_state->_arg; 431 ArgToken array_arg = arg_state->_arg;
361 array_arg = make_conversion(T_OBJECT, array_klass(), Bytecodes::_checkcast, array_arg, CHECK_NULL); 432 array_arg = make_conversion(T_OBJECT, array_klass(), Bytecodes::_checkcast, array_arg, CHECK_(empty));
362 change_argument(T_OBJECT, arg_slot, T_VOID, NULL); 433 change_argument(T_OBJECT, arg_slot, T_VOID, ArgToken(tt_void));
363 434
364 // Check the required length. 435 // Check the required length.
365 int spread_slots = 1 + chain().adapter_conversion_stack_pushes(); 436 int spread_slots = 1 + chain().adapter_conversion_stack_pushes();
366 int spread_length = spread_slots; 437 int spread_length = spread_slots;
367 if (type2size[element_type] == 2) { 438 if (type2size[element_type] == 2) {
368 if (spread_slots % 2 != 0) spread_slots = -1; // force error 439 if (spread_slots % 2 != 0) spread_slots = -1; // force error
369 spread_length = spread_slots / 2; 440 spread_length = spread_slots / 2;
370 } 441 }
371 if (spread_slots < 0) { 442 if (spread_slots < 0) {
372 lose("bad spread length", CHECK_NULL); 443 lose("bad spread length", CHECK_(empty));
373 } 444 }
374 445
375 jvalue length_jvalue; length_jvalue.i = spread_length; 446 jvalue length_jvalue; length_jvalue.i = spread_length;
376 ArgToken length_arg = make_prim_constant(T_INT, &length_jvalue, CHECK_NULL); 447 ArgToken length_arg = make_prim_constant(T_INT, &length_jvalue, CHECK_(empty));
377 // Call a built-in method known to the JVM to validate the length. 448 // Call a built-in method known to the JVM to validate the length.
378 ArgToken arglist[3]; 449 ArgToken arglist[3];
379 arglist[0] = array_arg; // value to check 450 arglist[0] = array_arg; // value to check
380 arglist[1] = length_arg; // length to check 451 arglist[1] = length_arg; // length to check
381 arglist[2] = NULL; // sentinel 452 arglist[2] = ArgToken(); // sentinel
382 make_invoke(NULL, vmIntrinsics::_checkSpreadArgument, 453 make_invoke(NULL, vmIntrinsics::_checkSpreadArgument,
383 Bytecodes::_invokestatic, false, 3, &arglist[0], CHECK_NULL); 454 Bytecodes::_invokestatic, false, 3, &arglist[0], CHECK_(empty));
384 455
385 // Spread out the array elements. 456 // Spread out the array elements.
386 Bytecodes::Code aload_op = Bytecodes::_aaload; 457 Bytecodes::Code aload_op = Bytecodes::_aaload;
387 if (element_type != T_OBJECT) { 458 if (element_type != T_OBJECT) {
388 lose("primitive array NYI", CHECK_NULL); 459 lose("primitive array NYI", CHECK_(empty));
389 } 460 }
390 int ap = arg_slot; 461 int ap = arg_slot;
391 for (int i = 0; i < spread_length; i++) { 462 for (int i = 0; i < spread_length; i++) {
392 jvalue offset_jvalue; offset_jvalue.i = i; 463 jvalue offset_jvalue; offset_jvalue.i = i;
393 ArgToken offset_arg = make_prim_constant(T_INT, &offset_jvalue, CHECK_NULL); 464 ArgToken offset_arg = make_prim_constant(T_INT, &offset_jvalue, CHECK_(empty));
394 ArgToken element_arg = make_fetch(element_type, element_klass(), aload_op, array_arg, offset_arg, CHECK_NULL); 465 ArgToken element_arg = make_fetch(element_type, element_klass(), aload_op, array_arg, offset_arg, CHECK_(empty));
395 change_argument(T_VOID, ap, element_type, element_arg); 466 change_argument(T_VOID, ap, element_type, element_arg);
396 ap += type2size[element_type]; 467 ap += type2size[element_type];
397 } 468 }
398 break; 469 break;
399 } 470 }
400 471
401 case sun_dyn_AdapterMethodHandle::OP_FLYBY: //NYI, runs Java code 472 case sun_dyn_AdapterMethodHandle::OP_FLYBY: //NYI, runs Java code
402 case sun_dyn_AdapterMethodHandle::OP_RICOCHET: //NYI, runs Java code 473 case sun_dyn_AdapterMethodHandle::OP_RICOCHET: //NYI, runs Java code
403 lose("unimplemented", CHECK_NULL); 474 lose("unimplemented", CHECK_(empty));
404 break; 475 break;
405 476
406 default: 477 default:
407 lose("bad adapter conversion", CHECK_NULL); 478 lose("bad adapter conversion", CHECK_(empty));
408 break; 479 break;
409 } 480 }
410 } 481 }
411 482
412 if (chain().is_bound()) { 483 if (chain().is_bound()) {
413 // push a new argument 484 // push a new argument
414 BasicType arg_type = chain().bound_arg_type(); 485 BasicType arg_type = chain().bound_arg_type();
415 jint arg_slot = chain().bound_arg_slot(); 486 jint arg_slot = chain().bound_arg_slot();
416 oop arg_oop = chain().bound_arg_oop(); 487 oop arg_oop = chain().bound_arg_oop();
417 ArgToken arg = NULL; 488 ArgToken arg;
418 if (arg_type == T_OBJECT) { 489 if (arg_type == T_OBJECT) {
419 arg = make_oop_constant(arg_oop, CHECK_NULL); 490 arg = make_oop_constant(arg_oop, CHECK_(empty));
420 } else { 491 } else {
421 jvalue arg_value; 492 jvalue arg_value;
422 BasicType bt = java_lang_boxing_object::get_value(arg_oop, &arg_value); 493 BasicType bt = java_lang_boxing_object::get_value(arg_oop, &arg_value);
423 if (bt == arg_type) { 494 if (bt == arg_type) {
424 arg = make_prim_constant(arg_type, &arg_value, CHECK_NULL); 495 arg = make_prim_constant(arg_type, &arg_value, CHECK_(empty));
425 } else { 496 } else {
426 lose("bad bound value", CHECK_NULL); 497 lose("bad bound value", CHECK_(empty));
427 } 498 }
428 } 499 }
429 debug_only(arg_oop = badOop); 500 debug_only(arg_oop = badOop);
430 change_argument(T_VOID, arg_slot, arg_type, arg); 501 change_argument(T_VOID, arg_slot, arg_type, arg);
431 } 502 }
432 503
433 // this test must come after the body of the loop 504 // this test must come after the body of the loop
434 if (!chain().is_last()) { 505 if (!chain().is_last()) {
435 chain().next(CHECK_NULL); 506 chain().next(CHECK_(empty));
436 } else { 507 } else {
437 break; 508 break;
438 } 509 }
439 } 510 }
440 511
446 SlotState* arg_state = slot_state(i); 517 SlotState* arg_state = slot_state(i);
447 if (arg_state->_type == T_VOID) continue; 518 if (arg_state->_type == T_VOID) continue;
448 arglist[ap++] = _outgoing.at(i)._arg; 519 arglist[ap++] = _outgoing.at(i)._arg;
449 } 520 }
450 assert(ap == _outgoing_argc, ""); 521 assert(ap == _outgoing_argc, "");
451 arglist[ap] = NULL; // add a sentinel, for the sake of asserts 522 arglist[ap] = ArgToken(); // add a sentinel, for the sake of asserts
452 return make_invoke(chain().last_method_oop(), 523 return make_invoke(chain().last_method_oop(),
453 vmIntrinsics::_none, 524 vmIntrinsics::_none,
454 chain().last_invoke_code(), true, 525 chain().last_invoke_code(), true,
455 ap, arglist, THREAD); 526 ap, arglist, THREAD);
456 } 527 }
457 528
529
530 // -----------------------------------------------------------------------------
531 // MethodHandleWalker::walk_incoming_state
532 //
458 void MethodHandleWalker::walk_incoming_state(TRAPS) { 533 void MethodHandleWalker::walk_incoming_state(TRAPS) {
459 Handle mtype(THREAD, chain().method_type_oop()); 534 Handle mtype(THREAD, chain().method_type_oop());
460 int nptypes = java_dyn_MethodType::ptype_count(mtype()); 535 int nptypes = java_dyn_MethodType::ptype_count(mtype());
461 _outgoing_argc = nptypes; 536 _outgoing_argc = nptypes;
462 int argp = nptypes - 1; 537 int argp = nptypes - 1;
463 if (argp >= 0) { 538 if (argp >= 0) {
464 _outgoing.at_grow(argp, make_state(T_VOID, NULL)); // presize 539 _outgoing.at_grow(argp, make_state(T_VOID, ArgToken(tt_void))); // presize
465 } 540 }
466 for (int i = 0; i < nptypes; i++) { 541 for (int i = 0; i < nptypes; i++) {
467 klassOop arg_type_klass = NULL; 542 klassOop arg_type_klass = NULL;
468 BasicType arg_type = java_lang_Class::as_BasicType( 543 BasicType arg_type = java_lang_Class::as_BasicType(
469 java_dyn_MethodType::ptype(mtype(), i), &arg_type_klass); 544 java_dyn_MethodType::ptype(mtype(), i), &arg_type_klass);
470 ArgToken arg = make_parameter(arg_type, arg_type_klass, i, CHECK); 545 int index = new_local_index(arg_type);
471 debug_only(arg_type_klass = (klassOop)NULL); 546 ArgToken arg = make_parameter(arg_type, arg_type_klass, index, CHECK);
547 debug_only(arg_type_klass = (klassOop) NULL);
472 _outgoing.at_put(argp, make_state(arg_type, arg)); 548 _outgoing.at_put(argp, make_state(arg_type, arg));
473 if (type2size[arg_type] == 2) { 549 if (type2size[arg_type] == 2) {
474 // add the extra slot, so we can model the JVM stack 550 // add the extra slot, so we can model the JVM stack
475 _outgoing.insert_before(argp+1, make_state(T_VOID, NULL)); 551 _outgoing.insert_before(argp+1, make_state(T_VOID, ArgToken(tt_void)));
476 } 552 }
477 --argp; 553 --argp;
478 } 554 }
479 // call make_parameter at the end of the list for the return type 555 // call make_parameter at the end of the list for the return type
480 klassOop ret_type_klass = NULL; 556 klassOop ret_type_klass = NULL;
482 java_dyn_MethodType::rtype(mtype()), &ret_type_klass); 558 java_dyn_MethodType::rtype(mtype()), &ret_type_klass);
483 ArgToken ret = make_parameter(ret_type, ret_type_klass, -1, CHECK); 559 ArgToken ret = make_parameter(ret_type, ret_type_klass, -1, CHECK);
484 // ignore ret; client can catch it if needed 560 // ignore ret; client can catch it if needed
485 } 561 }
486 562
487 // this is messy because some kinds of arguments are paired with 563
488 // companion slots containing an empty value 564 // -----------------------------------------------------------------------------
565 // MethodHandleWalker::change_argument
566 //
567 // This is messy because some kinds of arguments are paired with
568 // companion slots containing an empty value.
489 void MethodHandleWalker::change_argument(BasicType old_type, int slot, BasicType new_type, 569 void MethodHandleWalker::change_argument(BasicType old_type, int slot, BasicType new_type,
490 MethodHandleWalker::ArgToken new_arg) { 570 const ArgToken& new_arg) {
491 int old_size = type2size[old_type]; 571 int old_size = type2size[old_type];
492 int new_size = type2size[new_type]; 572 int new_size = type2size[new_type];
493 if (old_size == new_size) { 573 if (old_size == new_size) {
494 // simple case first 574 // simple case first
495 _outgoing.at_put(slot, make_state(new_type, new_arg)); 575 _outgoing.at_put(slot, make_state(new_type, new_arg));
496 } else if (old_size > new_size) { 576 } else if (old_size > new_size) {
497 for (int i = old_size-1; i >= new_size; i++) { 577 for (int i = old_size - 1; i >= new_size; i--) {
498 assert((i != 0) == (_outgoing.at(slot + i)._type == T_VOID), ""); 578 assert((i != 0) == (_outgoing.at(slot + i)._type == T_VOID), "");
499 _outgoing.remove_at(slot + i); 579 _outgoing.remove_at(slot + i);
500 } 580 }
501 if (new_size > 0) 581 if (new_size > 0)
502 _outgoing.at_put(slot, make_state(new_type, new_arg)); 582 _outgoing.at_put(slot, make_state(new_type, new_arg));
503 else 583 else
504 _outgoing_argc -= 1; // deleted a real argument 584 _outgoing_argc -= 1; // deleted a real argument
505 } else { 585 } else {
506 for (int i = old_size; i < new_size; i++) { 586 for (int i = old_size; i < new_size; i++) {
507 _outgoing.insert_before(slot+i, make_state(T_VOID, NULL)); 587 _outgoing.insert_before(slot + i, make_state(T_VOID, ArgToken(tt_void)));
508 } 588 }
509 _outgoing.at_put(slot, make_state(new_type, new_arg)); 589 _outgoing.at_put(slot, make_state(new_type, new_arg));
510 if (old_size == 0) 590 if (old_size == 0)
511 _outgoing_argc += 1; // inserted a real argument 591 _outgoing_argc += 1; // inserted a real argument
512 } 592 }
524 return args_seen; 604 return args_seen;
525 } 605 }
526 #endif 606 #endif
527 607
528 608
529 void MethodHandleCompiler::compile(TRAPS) { 609 // -----------------------------------------------------------------------------
610 // MethodHandleCompiler
611
612 MethodHandleCompiler::MethodHandleCompiler(Handle root, methodHandle callee, bool is_invokedynamic, TRAPS)
613 : MethodHandleWalker(root, is_invokedynamic, THREAD),
614 _callee(callee),
615 _thread(THREAD),
616 _bytecode(THREAD, 50),
617 _constants(THREAD, 10),
618 _cur_stack(0),
619 _max_stack(0),
620 _rtype(T_ILLEGAL)
621 {
622
623 // Element zero is always the null constant.
624 (void) _constants.append(NULL);
625
626 // Set name and signature index.
627 _name_index = cpool_symbol_put(_callee->name());
628 _signature_index = cpool_symbol_put(_callee->signature());
629
630 // Get return type klass.
631 Handle first_mtype(THREAD, chain().method_type_oop());
632 // _rklass is NULL for primitives.
633 _rtype = java_lang_Class::as_BasicType(java_dyn_MethodType::rtype(first_mtype()), &_rklass);
634
635 int params = _callee->size_of_parameters(); // Incoming arguments plus receiver.
636 _num_params = for_invokedynamic() ? params - 1 : params; // XXX Check if callee is static?
637 }
638
639
640 // -----------------------------------------------------------------------------
641 // MethodHandleCompiler::compile
642 //
643 // Compile this MethodHandle into a bytecode adapter and return a
644 // methodOop.
645 methodHandle MethodHandleCompiler::compile(TRAPS) {
530 assert(_thread == THREAD, "must be same thread"); 646 assert(_thread == THREAD, "must be same thread");
531 647 methodHandle nullHandle;
532 _constant_oops.append(Handle()); // element zero is always the null constant 648 (void) walk(CHECK_(nullHandle));
533 _constant_prims.append(NULL); 649 return get_method_oop(CHECK_(nullHandle));
534 { 650 }
535 symbolOop sig 651
536 = java_dyn_MethodType::as_signature(chain().method_type_oop(), true, CHECK); 652
537 _signature_index = find_oop_constant(sig); 653 void MethodHandleCompiler::emit_bc(Bytecodes::Code op, int index) {
538 assert(signature() == sig, ""); 654 Bytecodes::check(op); // Are we legal?
539 } 655
540 656 switch (op) {
541 walk(CHECK); 657 // b
542 } 658 case Bytecodes::_aconst_null:
659 case Bytecodes::_iconst_m1:
660 case Bytecodes::_iconst_0:
661 case Bytecodes::_iconst_1:
662 case Bytecodes::_iconst_2:
663 case Bytecodes::_iconst_3:
664 case Bytecodes::_iconst_4:
665 case Bytecodes::_iconst_5:
666 case Bytecodes::_lconst_0:
667 case Bytecodes::_lconst_1:
668 case Bytecodes::_fconst_0:
669 case Bytecodes::_fconst_1:
670 case Bytecodes::_fconst_2:
671 case Bytecodes::_dconst_0:
672 case Bytecodes::_dconst_1:
673 case Bytecodes::_iload_0:
674 case Bytecodes::_iload_1:
675 case Bytecodes::_iload_2:
676 case Bytecodes::_iload_3:
677 case Bytecodes::_lload_0:
678 case Bytecodes::_lload_1:
679 case Bytecodes::_lload_2:
680 case Bytecodes::_lload_3:
681 case Bytecodes::_fload_0:
682 case Bytecodes::_fload_1:
683 case Bytecodes::_fload_2:
684 case Bytecodes::_fload_3:
685 case Bytecodes::_dload_0:
686 case Bytecodes::_dload_1:
687 case Bytecodes::_dload_2:
688 case Bytecodes::_dload_3:
689 case Bytecodes::_aload_0:
690 case Bytecodes::_aload_1:
691 case Bytecodes::_aload_2:
692 case Bytecodes::_aload_3:
693 case Bytecodes::_istore_0:
694 case Bytecodes::_istore_1:
695 case Bytecodes::_istore_2:
696 case Bytecodes::_istore_3:
697 case Bytecodes::_lstore_0:
698 case Bytecodes::_lstore_1:
699 case Bytecodes::_lstore_2:
700 case Bytecodes::_lstore_3:
701 case Bytecodes::_fstore_0:
702 case Bytecodes::_fstore_1:
703 case Bytecodes::_fstore_2:
704 case Bytecodes::_fstore_3:
705 case Bytecodes::_dstore_0:
706 case Bytecodes::_dstore_1:
707 case Bytecodes::_dstore_2:
708 case Bytecodes::_dstore_3:
709 case Bytecodes::_astore_0:
710 case Bytecodes::_astore_1:
711 case Bytecodes::_astore_2:
712 case Bytecodes::_astore_3:
713 case Bytecodes::_i2l:
714 case Bytecodes::_i2f:
715 case Bytecodes::_i2d:
716 case Bytecodes::_i2b:
717 case Bytecodes::_i2c:
718 case Bytecodes::_i2s:
719 case Bytecodes::_l2i:
720 case Bytecodes::_l2f:
721 case Bytecodes::_l2d:
722 case Bytecodes::_f2i:
723 case Bytecodes::_f2l:
724 case Bytecodes::_f2d:
725 case Bytecodes::_d2i:
726 case Bytecodes::_d2l:
727 case Bytecodes::_d2f:
728 case Bytecodes::_ireturn:
729 case Bytecodes::_lreturn:
730 case Bytecodes::_freturn:
731 case Bytecodes::_dreturn:
732 case Bytecodes::_areturn:
733 case Bytecodes::_return:
734 assert(strcmp(Bytecodes::format(op), "b") == 0, "wrong bytecode format");
735 _bytecode.push(op);
736 break;
737
738 // bi
739 case Bytecodes::_ldc:
740 case Bytecodes::_iload:
741 case Bytecodes::_lload:
742 case Bytecodes::_fload:
743 case Bytecodes::_dload:
744 case Bytecodes::_aload:
745 case Bytecodes::_istore:
746 case Bytecodes::_lstore:
747 case Bytecodes::_fstore:
748 case Bytecodes::_dstore:
749 case Bytecodes::_astore:
750 assert(strcmp(Bytecodes::format(op), "bi") == 0, "wrong bytecode format");
751 assert((char) index == index, "index does not fit in 8-bit");
752 _bytecode.push(op);
753 _bytecode.push(index);
754 break;
755
756 // bii
757 case Bytecodes::_ldc2_w:
758 case Bytecodes::_checkcast:
759 assert(strcmp(Bytecodes::format(op), "bii") == 0, "wrong bytecode format");
760 assert((short) index == index, "index does not fit in 16-bit");
761 _bytecode.push(op);
762 _bytecode.push(index >> 8);
763 _bytecode.push(index);
764 break;
765
766 // bjj
767 case Bytecodes::_invokestatic:
768 case Bytecodes::_invokespecial:
769 case Bytecodes::_invokevirtual:
770 assert(strcmp(Bytecodes::format(op), "bjj") == 0, "wrong bytecode format");
771 assert((short) index == index, "index does not fit in 16-bit");
772 _bytecode.push(op);
773 _bytecode.push(index >> 8);
774 _bytecode.push(index);
775 break;
776
777 default:
778 ShouldNotReachHere();
779 }
780 }
781
782
783 void MethodHandleCompiler::emit_load(BasicType bt, int index) {
784 if (index <= 3) {
785 switch (bt) {
786 case T_BOOLEAN: case T_BYTE: case T_CHAR: case T_SHORT:
787 case T_INT: emit_bc(Bytecodes::cast(Bytecodes::_iload_0 + index)); break;
788 case T_LONG: emit_bc(Bytecodes::cast(Bytecodes::_lload_0 + index)); break;
789 case T_FLOAT: emit_bc(Bytecodes::cast(Bytecodes::_fload_0 + index)); break;
790 case T_DOUBLE: emit_bc(Bytecodes::cast(Bytecodes::_dload_0 + index)); break;
791 case T_OBJECT: emit_bc(Bytecodes::cast(Bytecodes::_aload_0 + index)); break;
792 default:
793 ShouldNotReachHere();
794 }
795 }
796 else {
797 switch (bt) {
798 case T_BOOLEAN: case T_BYTE: case T_CHAR: case T_SHORT:
799 case T_INT: emit_bc(Bytecodes::_iload, index); break;
800 case T_LONG: emit_bc(Bytecodes::_lload, index); break;
801 case T_FLOAT: emit_bc(Bytecodes::_fload, index); break;
802 case T_DOUBLE: emit_bc(Bytecodes::_dload, index); break;
803 case T_OBJECT: emit_bc(Bytecodes::_aload, index); break;
804 default:
805 ShouldNotReachHere();
806 }
807 }
808 stack_push(bt);
809 }
810
811 void MethodHandleCompiler::emit_store(BasicType bt, int index) {
812 if (index <= 3) {
813 switch (bt) {
814 case T_BOOLEAN: case T_BYTE: case T_CHAR: case T_SHORT:
815 case T_INT: emit_bc(Bytecodes::cast(Bytecodes::_istore_0 + index)); break;
816 case T_LONG: emit_bc(Bytecodes::cast(Bytecodes::_lstore_0 + index)); break;
817 case T_FLOAT: emit_bc(Bytecodes::cast(Bytecodes::_fstore_0 + index)); break;
818 case T_DOUBLE: emit_bc(Bytecodes::cast(Bytecodes::_dstore_0 + index)); break;
819 case T_OBJECT: emit_bc(Bytecodes::cast(Bytecodes::_astore_0 + index)); break;
820 default:
821 ShouldNotReachHere();
822 }
823 }
824 else {
825 switch (bt) {
826 case T_BOOLEAN: case T_BYTE: case T_CHAR: case T_SHORT:
827 case T_INT: emit_bc(Bytecodes::_istore, index); break;
828 case T_LONG: emit_bc(Bytecodes::_lstore, index); break;
829 case T_FLOAT: emit_bc(Bytecodes::_fstore, index); break;
830 case T_DOUBLE: emit_bc(Bytecodes::_dstore, index); break;
831 case T_OBJECT: emit_bc(Bytecodes::_astore, index); break;
832 default:
833 ShouldNotReachHere();
834 }
835 }
836 stack_pop(bt);
837 }
838
839
840 void MethodHandleCompiler::emit_load_constant(ArgToken arg) {
841 BasicType bt = arg.basic_type();
842 switch (bt) {
843 case T_INT: {
844 jint value = arg.get_jint();
845 if (-1 <= value && value <= 5)
846 emit_bc(Bytecodes::cast(Bytecodes::_iconst_0 + value));
847 else
848 emit_bc(Bytecodes::_ldc, cpool_int_put(value));
849 break;
850 }
851 case T_LONG: {
852 jlong value = arg.get_jlong();
853 if (0 <= value && value <= 1)
854 emit_bc(Bytecodes::cast(Bytecodes::_lconst_0 + (int) value));
855 else
856 emit_bc(Bytecodes::_ldc2_w, cpool_long_put(value));
857 break;
858 }
859 case T_FLOAT: {
860 jfloat value = arg.get_jfloat();
861 if (value == 0.0 || value == 1.0 || value == 2.0)
862 emit_bc(Bytecodes::cast(Bytecodes::_fconst_0 + (int) value));
863 else
864 emit_bc(Bytecodes::_ldc, cpool_float_put(value));
865 break;
866 }
867 case T_DOUBLE: {
868 jdouble value = arg.get_jdouble();
869 if (value == 0.0 || value == 1.0)
870 emit_bc(Bytecodes::cast(Bytecodes::_dconst_0 + (int) value));
871 else
872 emit_bc(Bytecodes::_ldc2_w, cpool_double_put(value));
873 break;
874 }
875 case T_OBJECT: {
876 Handle value = arg.object();
877 if (value.is_null())
878 emit_bc(Bytecodes::_aconst_null);
879 else
880 emit_bc(Bytecodes::_ldc, cpool_object_put(value));
881 break;
882 }
883 default:
884 ShouldNotReachHere();
885 }
886 stack_push(bt);
887 }
888
543 889
544 MethodHandleWalker::ArgToken 890 MethodHandleWalker::ArgToken
545 MethodHandleCompiler::make_conversion(BasicType type, klassOop tk, Bytecodes::Code op, 891 MethodHandleCompiler::make_conversion(BasicType type, klassOop tk, Bytecodes::Code op,
546 MethodHandleWalker::ArgToken src, TRAPS) { 892 const ArgToken& src, TRAPS) {
547 Unimplemented(); 893
548 return NULL; 894 BasicType srctype = src.basic_type();
549 } 895 int index = src.index();
550 896
897 switch (op) {
898 case Bytecodes::_i2l:
899 case Bytecodes::_i2f:
900 case Bytecodes::_i2d:
901 case Bytecodes::_i2b:
902 case Bytecodes::_i2c:
903 case Bytecodes::_i2s:
904
905 case Bytecodes::_l2i:
906 case Bytecodes::_l2f:
907 case Bytecodes::_l2d:
908
909 case Bytecodes::_f2i:
910 case Bytecodes::_f2l:
911 case Bytecodes::_f2d:
912
913 case Bytecodes::_d2i:
914 case Bytecodes::_d2l:
915 case Bytecodes::_d2f:
916 emit_load(srctype, index);
917 stack_pop(srctype); // pop the src type
918 emit_bc(op);
919 stack_push(type); // push the dest value
920 if (srctype != type)
921 index = new_local_index(type);
922 emit_store(type, index);
923 break;
924
925 case Bytecodes::_checkcast:
926 emit_load(srctype, index);
927 emit_bc(op, cpool_klass_put(tk));
928 emit_store(srctype, index);
929 break;
930
931 default:
932 ShouldNotReachHere();
933 }
934
935 return make_parameter(type, tk, index, THREAD);
936 }
937
938
939 // -----------------------------------------------------------------------------
940 // MethodHandleCompiler
941 //
942
943 static jvalue zero_jvalue;
944
945 // Emit bytecodes for the given invoke instruction.
551 MethodHandleWalker::ArgToken 946 MethodHandleWalker::ArgToken
552 MethodHandleCompiler::make_invoke(methodOop m, vmIntrinsics::ID iid, 947 MethodHandleCompiler::make_invoke(methodOop m, vmIntrinsics::ID iid,
553 Bytecodes::Code op, bool tailcall, 948 Bytecodes::Code op, bool tailcall,
554 int argc, MethodHandleWalker::ArgToken* argv, 949 int argc, MethodHandleWalker::ArgToken* argv,
555 TRAPS) { 950 TRAPS) {
556 // If tailcall, we have walked all the way to a direct method handle. 951 if (m == NULL) {
557 // Otherwise, make a recursive call to some helper routine. 952 // Get the intrinsic methodOop.
558 #ifdef ASSERT 953 m = vmIntrinsics::method_for(iid);
954 }
955
956 klassOop klass = m->method_holder();
957 symbolOop name = m->name();
958 symbolOop signature = m->signature();
959
960 // This generated adapter method should be in the same class as the
961 // DMH target method (for accessability reasons).
962 if (tailcall) {
963 _target_klass = klass;
964 }
965
966 // instanceKlass* ik = instanceKlass::cast(klass);
967 // tty->print_cr("MethodHandleCompiler::make_invoke: %s %s.%s%s", Bytecodes::name(op), ik->external_name(), name->as_C_string(), signature->as_C_string());
968
969 // Inline the method.
970 InvocationCounter* ic = m->invocation_counter();
971 ic->set_carry();
972
973 for (int i = 0; i < argc; i++) {
974 ArgToken arg = argv[i];
975 TokenType tt = arg.token_type();
976 BasicType bt = arg.basic_type();
977
978 switch (tt) {
979 case tt_parameter:
980 case tt_temporary:
981 emit_load(bt, arg.index());
982 break;
983 case tt_constant:
984 emit_load_constant(arg);
985 break;
986 case tt_illegal:
987 // Sentinel.
988 assert(i == (argc - 1), "sentinel must be last entry");
989 break;
990 case tt_void:
991 default:
992 ShouldNotReachHere();
993 }
994 }
995
996 // Populate constant pool.
997 int name_index = cpool_symbol_put(name);
998 int signature_index = cpool_symbol_put(signature);
999 int name_and_type_index = cpool_name_and_type_put(name_index, signature_index);
1000 int klass_index = cpool_klass_put(klass);
1001 int methodref_index = cpool_methodref_put(klass_index, name_and_type_index);
1002
1003 // Generate invoke.
559 switch (op) { 1004 switch (op) {
1005 case Bytecodes::_invokestatic:
1006 case Bytecodes::_invokespecial:
560 case Bytecodes::_invokevirtual: 1007 case Bytecodes::_invokevirtual:
561 case Bytecodes::_invokespecial: 1008 emit_bc(op, methodref_index);
562 case Bytecodes::_invokestatic: 1009 break;
563 case Bytecodes::_invokeinterface: 1010 case Bytecodes::_invokeinterface:
1011 Unimplemented();
564 break; 1012 break;
565 default: 1013 default:
566 ShouldNotReachHere(); 1014 ShouldNotReachHere();
567 } 1015 }
568 #endif //ASSERT 1016
569 _bytes.put((char) op); 1017 // If tailcall, we have walked all the way to a direct method handle.
570 1018 // Otherwise, make a recursive call to some helper routine.
571 Unimplemented(); 1019 BasicType rbt = m->result_type();
572 return NULL; 1020 ArgToken ret;
1021 if (tailcall) {
1022 if (rbt != _rtype) {
1023 if (rbt == T_VOID) {
1024 // push a zero of the right sort
1025 ArgToken zero;
1026 if (_rtype == T_OBJECT) {
1027 zero = make_oop_constant(NULL, CHECK_(zero));
1028 } else {
1029 zero = make_prim_constant(_rtype, &zero_jvalue, CHECK_(zero));
1030 }
1031 emit_load_constant(zero);
1032 } else if (_rtype == T_VOID) {
1033 // We'll emit a _return with something on the stack.
1034 // It's OK to ignore what's on the stack.
1035 } else {
1036 tty->print_cr("*** rbt=%d != rtype=%d", rbt, _rtype);
1037 assert(false, "IMPLEMENT ME");
1038 }
1039 }
1040 switch (_rtype) {
1041 case T_BOOLEAN: case T_BYTE: case T_CHAR: case T_SHORT:
1042 case T_INT: emit_bc(Bytecodes::_ireturn); break;
1043 case T_LONG: emit_bc(Bytecodes::_lreturn); break;
1044 case T_FLOAT: emit_bc(Bytecodes::_freturn); break;
1045 case T_DOUBLE: emit_bc(Bytecodes::_dreturn); break;
1046 case T_VOID: emit_bc(Bytecodes::_return); break;
1047 case T_OBJECT:
1048 if (_rklass.not_null() && _rklass() != SystemDictionary::object_klass())
1049 emit_bc(Bytecodes::_checkcast, cpool_klass_put(_rklass()));
1050 emit_bc(Bytecodes::_areturn);
1051 break;
1052 default: ShouldNotReachHere();
1053 }
1054 ret = ArgToken(); // Dummy return value.
1055 }
1056 else {
1057 stack_push(rbt); // The return value is already pushed onto the stack.
1058 int index = new_local_index(rbt);
1059 switch (rbt) {
1060 case T_BOOLEAN: case T_BYTE: case T_CHAR: case T_SHORT:
1061 case T_INT: case T_LONG: case T_FLOAT: case T_DOUBLE:
1062 case T_OBJECT:
1063 emit_store(rbt, index);
1064 ret = ArgToken(tt_temporary, rbt, index);
1065 break;
1066 case T_VOID:
1067 ret = ArgToken(tt_void);
1068 break;
1069 default:
1070 ShouldNotReachHere();
1071 }
1072 }
1073
1074 return ret;
573 } 1075 }
574 1076
575 MethodHandleWalker::ArgToken 1077 MethodHandleWalker::ArgToken
576 MethodHandleCompiler::make_fetch(BasicType type, klassOop tk, Bytecodes::Code op, 1078 MethodHandleCompiler::make_fetch(BasicType type, klassOop tk, Bytecodes::Code op,
577 MethodHandleWalker::ArgToken base, 1079 const MethodHandleWalker::ArgToken& base,
578 MethodHandleWalker::ArgToken offset, 1080 const MethodHandleWalker::ArgToken& offset,
579 TRAPS) { 1081 TRAPS) {
580 Unimplemented(); 1082 Unimplemented();
581 return NULL; 1083 return ArgToken();
582 } 1084 }
583 1085
584 int MethodHandleCompiler::find_oop_constant(oop con) { 1086
585 if (con == NULL) return 0; 1087 int MethodHandleCompiler::cpool_primitive_put(BasicType bt, jvalue* con) {
586 for (int i = 1, imax = _constant_oops.length(); i < imax; i++) {
587 if (_constant_oops.at(i) == con)
588 return i;
589 }
590 _constant_prims.append(NULL);
591 return _constant_oops.append(con);
592 }
593
594 int MethodHandleCompiler::find_prim_constant(BasicType bt, jvalue* con) {
595 jvalue con_copy; 1088 jvalue con_copy;
596 assert(bt < T_OBJECT, ""); 1089 assert(bt < T_OBJECT, "");
597 if (type2aelembytes(bt) < jintSize) { 1090 if (type2aelembytes(bt) < jintSize) {
598 // widen to int 1091 // widen to int
599 con_copy = (*con); 1092 con_copy = (*con);
605 case T_SHORT: con->i = con->s; break; 1098 case T_SHORT: con->i = con->s; break;
606 default: ShouldNotReachHere(); 1099 default: ShouldNotReachHere();
607 } 1100 }
608 bt = T_INT; 1101 bt = T_INT;
609 } 1102 }
610 for (int i = 1, imax = _constant_prims.length(); i < imax; i++) { 1103
611 PrimCon* pcon = _constant_prims.at(i); 1104 // for (int i = 1, imax = _constants.length(); i < imax; i++) {
612 if (pcon != NULL && pcon->_type == bt) { 1105 // ConstantValue* con = _constants.at(i);
613 bool match = false; 1106 // if (con != NULL && con->is_primitive() && con->_type == bt) {
614 switch (type2size[bt]) { 1107 // bool match = false;
615 case 1: if (pcon->_value.i == con->i) match = true; break; 1108 // switch (type2size[bt]) {
616 case 2: if (pcon->_value.j == con->j) match = true; break; 1109 // case 1: if (pcon->_value.i == con->i) match = true; break;
617 } 1110 // case 2: if (pcon->_value.j == con->j) match = true; break;
618 if (match) 1111 // }
619 return i; 1112 // if (match)
620 } 1113 // return i;
621 } 1114 // }
622 PrimCon* pcon = new PrimCon(); 1115 // }
623 pcon->_type = bt; 1116 ConstantValue* cv = new ConstantValue(bt, *con);
624 pcon->_value = (*con); 1117 int index = _constants.append(cv);
625 _constant_oops.append(Handle()); 1118
626 return _constant_prims.append(pcon); 1119 // long and double entries take 2 slots, we add another empty entry.
627 } 1120 if (type2size[bt] == 2)
628 1121 (void) _constants.append(NULL);
1122
1123 return index;
1124 }
1125
1126
1127 constantPoolHandle MethodHandleCompiler::get_constant_pool(TRAPS) const {
1128 constantPoolHandle nullHandle;
1129 bool is_conc_safe = true;
1130 constantPoolOop cpool_oop = oopFactory::new_constantPool(_constants.length(), is_conc_safe, CHECK_(nullHandle));
1131 constantPoolHandle cpool(THREAD, cpool_oop);
1132
1133 // Fill the real constant pool skipping the zero element.
1134 for (int i = 1; i < _constants.length(); i++) {
1135 ConstantValue* cv = _constants.at(i);
1136 switch (cv->tag()) {
1137 case JVM_CONSTANT_Utf8: cpool->symbol_at_put( i, cv->symbol_oop() ); break;
1138 case JVM_CONSTANT_Integer: cpool->int_at_put( i, cv->get_jint() ); break;
1139 case JVM_CONSTANT_Float: cpool->float_at_put( i, cv->get_jfloat() ); break;
1140 case JVM_CONSTANT_Long: cpool->long_at_put( i, cv->get_jlong() ); break;
1141 case JVM_CONSTANT_Double: cpool->double_at_put( i, cv->get_jdouble() ); break;
1142 case JVM_CONSTANT_Class: cpool->klass_at_put( i, cv->klass_oop() ); break;
1143 case JVM_CONSTANT_Methodref: cpool->method_at_put( i, cv->first_index(), cv->second_index()); break;
1144 case JVM_CONSTANT_NameAndType: cpool->name_and_type_at_put(i, cv->first_index(), cv->second_index()); break;
1145 case JVM_CONSTANT_Object: cpool->object_at_put( i, cv->object_oop() ); break;
1146 default: ShouldNotReachHere();
1147 }
1148
1149 switch (cv->tag()) {
1150 case JVM_CONSTANT_Long:
1151 case JVM_CONSTANT_Double:
1152 i++; // Skip empty entry.
1153 assert(_constants.at(i) == NULL, "empty entry");
1154 break;
1155 }
1156 }
1157
1158 // Set the constant pool holder to the target method's class.
1159 cpool->set_pool_holder(_target_klass());
1160
1161 return cpool;
1162 }
1163
1164
1165 methodHandle MethodHandleCompiler::get_method_oop(TRAPS) const {
1166 methodHandle nullHandle;
1167 // Create a method that holds the generated bytecode. invokedynamic
1168 // has no receiver, normal MH calls do.
1169 int flags_bits;
1170 if (for_invokedynamic())
1171 flags_bits = (/*JVM_MH_INVOKE_BITS |*/ JVM_ACC_PUBLIC | JVM_ACC_FINAL | JVM_ACC_STATIC);
1172 else
1173 flags_bits = (/*JVM_MH_INVOKE_BITS |*/ JVM_ACC_PUBLIC | JVM_ACC_FINAL);
1174
1175 bool is_conc_safe = true;
1176 methodOop m_oop = oopFactory::new_method(bytecode_length(),
1177 accessFlags_from(flags_bits),
1178 0, 0, 0, is_conc_safe, CHECK_(nullHandle));
1179 methodHandle m(THREAD, m_oop);
1180 m_oop = NULL; // oop not GC safe
1181
1182 constantPoolHandle cpool = get_constant_pool(CHECK_(nullHandle));
1183 m->set_constants(cpool());
1184
1185 m->set_name_index(_name_index);
1186 m->set_signature_index(_signature_index);
1187
1188 m->set_code((address) bytecode());
1189
1190 m->set_max_stack(_max_stack);
1191 m->set_max_locals(max_locals());
1192 m->set_size_of_parameters(_num_params);
1193
1194 typeArrayHandle exception_handlers(THREAD, Universe::the_empty_int_array());
1195 m->set_exception_table(exception_handlers());
1196
1197 // Set the carry bit of the invocation counter to force inlining of
1198 // the adapter.
1199 InvocationCounter* ic = m->invocation_counter();
1200 ic->set_carry();
1201
1202 // Rewrite the method and set up the constant pool cache.
1203 objArrayOop m_array = oopFactory::new_system_objArray(1, CHECK_(nullHandle));
1204 objArrayHandle methods(THREAD, m_array);
1205 methods->obj_at_put(0, m());
1206 Rewriter::rewrite(_target_klass(), cpool, methods, CHECK_(nullHandle)); // Use fake class.
629 1207
630 #ifndef PRODUCT 1208 #ifndef PRODUCT
631 1209 if (TraceMethodHandles) {
1210 m->print();
1211 m->print_codes();
1212 }
1213 #endif //PRODUCT
1214
1215 return m;
1216 }
1217
1218
1219 #ifndef PRODUCT
1220
1221 #if 0
632 // MH printer for debugging. 1222 // MH printer for debugging.
633 1223
634 class MethodHandlePrinter : public MethodHandleWalker { 1224 class MethodHandlePrinter : public MethodHandleWalker {
635 private: 1225 private:
636 outputStream* _out; 1226 outputStream* _out;
789 out->print("\n}\n"); 1379 out->print("\n}\n");
790 } 1380 }
791 out->print("\n"); 1381 out->print("\n");
792 } 1382 }
793 }; 1383 };
1384 #endif // 0
794 1385
795 extern "C" 1386 extern "C"
796 void print_method_handle(oop mh) { 1387 void print_method_handle(oop mh) {
797 if (java_dyn_MethodHandle::is_instance(mh)) { 1388 if (java_dyn_MethodHandle::is_instance(mh)) {
798 MethodHandlePrinter::print(mh); 1389 //MethodHandlePrinter::print(mh);
799 } else { 1390 } else {
800 tty->print("*** not a method handle: "); 1391 tty->print("*** not a method handle: ");
801 mh->print(); 1392 mh->print();
802 } 1393 }
803 } 1394 }