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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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273 VisitVariableDeclaration(function); | 273 VisitVariableDeclaration(function); |
274 } | 274 } |
275 VisitDeclarations(scope()->declarations()); | 275 VisitDeclarations(scope()->declarations()); |
276 } | 276 } |
277 | 277 |
278 { Comment cmnt(masm_, "[ Stack check"); | 278 { Comment cmnt(masm_, "[ Stack check"); |
279 PrepareForBailoutForId(BailoutId::Declarations(), NO_REGISTERS); | 279 PrepareForBailoutForId(BailoutId::Declarations(), NO_REGISTERS); |
280 Label ok; | 280 Label ok; |
281 __ CompareRoot(rsp, Heap::kStackLimitRootIndex); | 281 __ CompareRoot(rsp, Heap::kStackLimitRootIndex); |
282 __ j(above_equal, &ok, Label::kNear); | 282 __ j(above_equal, &ok, Label::kNear); |
283 StackCheckStub stub; | 283 __ call(isolate()->builtins()->StackCheck(), RelocInfo::CODE_TARGET); |
284 __ CallStub(&stub); | |
285 __ bind(&ok); | 284 __ bind(&ok); |
286 } | 285 } |
287 | 286 |
288 { Comment cmnt(masm_, "[ Body"); | 287 { Comment cmnt(masm_, "[ Body"); |
289 ASSERT(loop_depth() == 0); | 288 ASSERT(loop_depth() == 0); |
290 VisitStatements(function()->body()); | 289 VisitStatements(function()->body()); |
291 ASSERT(loop_depth() == 0); | 290 ASSERT(loop_depth() == 0); |
292 } | 291 } |
293 } | 292 } |
294 | 293 |
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334 | 333 |
335 int weight = 1; | 334 int weight = 1; |
336 if (FLAG_weighted_back_edges) { | 335 if (FLAG_weighted_back_edges) { |
337 ASSERT(back_edge_target->is_bound()); | 336 ASSERT(back_edge_target->is_bound()); |
338 int distance = masm_->SizeOfCodeGeneratedSince(back_edge_target); | 337 int distance = masm_->SizeOfCodeGeneratedSince(back_edge_target); |
339 weight = Min(kMaxBackEdgeWeight, | 338 weight = Min(kMaxBackEdgeWeight, |
340 Max(1, distance / kCodeSizeMultiplier)); | 339 Max(1, distance / kCodeSizeMultiplier)); |
341 } | 340 } |
342 EmitProfilingCounterDecrement(weight); | 341 EmitProfilingCounterDecrement(weight); |
343 __ j(positive, &ok, Label::kNear); | 342 __ j(positive, &ok, Label::kNear); |
344 InterruptStub stub; | 343 __ call(isolate()->builtins()->InterruptCheck(), RelocInfo::CODE_TARGET); |
345 __ CallStub(&stub); | |
346 | 344 |
347 // Record a mapping of this PC offset to the OSR id. This is used to find | 345 // Record a mapping of this PC offset to the OSR id. This is used to find |
348 // the AST id from the unoptimized code in order to use it as a key into | 346 // the AST id from the unoptimized code in order to use it as a key into |
349 // the deoptimization input data found in the optimized code. | 347 // the deoptimization input data found in the optimized code. |
350 RecordBackEdge(stmt->OsrEntryId()); | 348 RecordBackEdge(stmt->OsrEntryId()); |
351 | 349 |
352 EmitProfilingCounterReset(); | 350 EmitProfilingCounterReset(); |
353 | 351 |
354 __ bind(&ok); | 352 __ bind(&ok); |
355 PrepareForBailoutForId(stmt->EntryId(), NO_REGISTERS); | 353 PrepareForBailoutForId(stmt->EntryId(), NO_REGISTERS); |
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381 Max(1, distance / kCodeSizeMultiplier)); | 379 Max(1, distance / kCodeSizeMultiplier)); |
382 } | 380 } |
383 EmitProfilingCounterDecrement(weight); | 381 EmitProfilingCounterDecrement(weight); |
384 Label ok; | 382 Label ok; |
385 __ j(positive, &ok, Label::kNear); | 383 __ j(positive, &ok, Label::kNear); |
386 __ push(rax); | 384 __ push(rax); |
387 if (info_->ShouldSelfOptimize() && FLAG_direct_self_opt) { | 385 if (info_->ShouldSelfOptimize() && FLAG_direct_self_opt) { |
388 __ push(Operand(rbp, JavaScriptFrameConstants::kFunctionOffset)); | 386 __ push(Operand(rbp, JavaScriptFrameConstants::kFunctionOffset)); |
389 __ CallRuntime(Runtime::kOptimizeFunctionOnNextCall, 1); | 387 __ CallRuntime(Runtime::kOptimizeFunctionOnNextCall, 1); |
390 } else { | 388 } else { |
391 InterruptStub stub; | 389 __ call(isolate()->builtins()->InterruptCheck(), |
392 __ CallStub(&stub); | 390 RelocInfo::CODE_TARGET); |
393 } | 391 } |
394 __ pop(rax); | 392 __ pop(rax); |
395 EmitProfilingCounterReset(); | 393 EmitProfilingCounterReset(); |
396 __ bind(&ok); | 394 __ bind(&ok); |
397 } | 395 } |
398 #ifdef DEBUG | 396 #ifdef DEBUG |
399 // Add a label for checking the size of the code used for returning. | 397 // Add a label for checking the size of the code used for returning. |
400 Label check_exit_codesize; | 398 Label check_exit_codesize; |
401 masm_->bind(&check_exit_codesize); | 399 masm_->bind(&check_exit_codesize); |
402 #endif | 400 #endif |
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4878 *context_length = 0; | 4876 *context_length = 0; |
4879 return previous_; | 4877 return previous_; |
4880 } | 4878 } |
4881 | 4879 |
4882 | 4880 |
4883 #undef __ | 4881 #undef __ |
4884 | 4882 |
4885 } } // namespace v8::internal | 4883 } } // namespace v8::internal |
4886 | 4884 |
4887 #endif // V8_TARGET_ARCH_X64 | 4885 #endif // V8_TARGET_ARCH_X64 |
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