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Issue 132163005: Version 1.1.0-dev.5.7 (Closed) Base URL: http://dart.googlecode.com/svn/trunk/dart/
Patch Set: Created 6 years, 11 months ago
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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
2 // for details. All rights reserved. Use of this source code is governed by a 2 // for details. All rights reserved. Use of this source code is governed by a
3 // BSD-style license that can be found in the LICENSE file. 3 // BSD-style license that can be found in the LICENSE file.
4 4
5 #include "vm/deopt_instructions.h" 5 #include "vm/deopt_instructions.h"
6 6
7 #include "vm/assembler.h" 7 #include "vm/assembler.h"
8 #include "vm/code_patcher.h" 8 #include "vm/code_patcher.h"
9 #include "vm/intermediate_language.h" 9 #include "vm/intermediate_language.h"
10 #include "vm/locations.h" 10 #include "vm/locations.h"
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294 OS::PrintErr("*%" Pd ". [%" Px "] %#014" Px " [%s]\n", 294 OS::PrintErr("*%" Pd ". [%" Px "] %#014" Px " [%s]\n",
295 i, 295 i,
296 reinterpret_cast<uword>(&start[i]), 296 reinterpret_cast<uword>(&start[i]),
297 start[i], 297 start[i],
298 deopt_instructions[i + (len - frame_size)]->ToCString()); 298 deopt_instructions[i + (len - frame_size)]->ToCString());
299 } 299 }
300 } 300 }
301 } 301 }
302 302
303 303
304 static void FillDeferredSlots(DeferredSlot** slot_list) { 304 static void FillDeferredSlots(DeoptContext* deopt_context,
305 DeferredSlot** slot_list) {
305 DeferredSlot* slot = *slot_list; 306 DeferredSlot* slot = *slot_list;
306 *slot_list = NULL; 307 *slot_list = NULL;
307 308
308 while (slot != NULL) { 309 while (slot != NULL) {
309 DeferredSlot* current = slot; 310 DeferredSlot* current = slot;
310 slot = slot->next(); 311 slot = slot->next();
311 312
312 current->Materialize(); 313 current->Materialize(deopt_context);
313 314
314 delete current; 315 delete current;
315 } 316 }
316 } 317 }
317 318
318 319
319 // Materializes all deferred objects. Returns the total number of 320 // Materializes all deferred objects. Returns the total number of
320 // artificial arguments used during deoptimization. 321 // artificial arguments used during deoptimization.
321 intptr_t DeoptContext::MaterializeDeferredObjects() { 322 intptr_t DeoptContext::MaterializeDeferredObjects() {
322 // First materialize all unboxed "primitive" values (doubles, mints, simd) 323 // First materialize all unboxed "primitive" values (doubles, mints, simd)
323 // then materialize objects. The order is important: objects might be 324 // then materialize objects. The order is important: objects might be
324 // referencing boxes allocated on the first step. At the same time 325 // referencing boxes allocated on the first step. At the same time
325 // objects can't be referencing other deferred objects because storing 326 // objects can't be referencing other deferred objects because storing
326 // an object into a field is always conservatively treated as escaping by 327 // an object into a field is always conservatively treated as escaping by
327 // allocation sinking and load forwarding. 328 // allocation sinking and load forwarding.
328 FillDeferredSlots(&deferred_boxes_); 329 FillDeferredSlots(this, &deferred_boxes_);
329 FillDeferredSlots(&deferred_object_refs_); 330 FillDeferredSlots(this, &deferred_object_refs_);
330 331
331 // Compute total number of artificial arguments used during deoptimization. 332 // Compute total number of artificial arguments used during deoptimization.
332 intptr_t deopt_arg_count = 0; 333 intptr_t deopt_arg_count = 0;
333 for (intptr_t i = 0; i < DeferredObjectsCount(); i++) { 334 for (intptr_t i = 0; i < DeferredObjectsCount(); i++) {
334 deopt_arg_count += GetDeferredObject(i)->ArgumentCount(); 335 deopt_arg_count += GetDeferredObject(i)->ArgumentCount();
335 } 336 }
336 337
337 // Since this is the only step where GC can occur during deoptimization, 338 // Since this is the only step where GC can occur during deoptimization,
338 // use it to report the source line where deoptimization occured. 339 // use it to report the source line where deoptimization occured.
339 if (FLAG_trace_deoptimization || FLAG_trace_deoptimization_verbose) { 340 if (FLAG_trace_deoptimization || FLAG_trace_deoptimization_verbose) {
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1406 Smi* offset, 1407 Smi* offset,
1407 DeoptInfo* info, 1408 DeoptInfo* info,
1408 Smi* reason) { 1409 Smi* reason) {
1409 intptr_t i = index * kEntrySize; 1410 intptr_t i = index * kEntrySize;
1410 *offset ^= table.At(i); 1411 *offset ^= table.At(i);
1411 *info ^= table.At(i + 1); 1412 *info ^= table.At(i + 1);
1412 *reason ^= table.At(i + 2); 1413 *reason ^= table.At(i + 2);
1413 } 1414 }
1414 1415
1415 } // namespace dart 1416 } // namespace dart
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