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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/v8.h" | 5 #include "src/v8.h" |
6 | 6 |
7 #if V8_TARGET_ARCH_ARM64 | 7 #if V8_TARGET_ARCH_ARM64 |
8 | 8 |
9 #include "src/code-factory.h" | 9 #include "src/code-factory.h" |
10 #include "src/code-stubs.h" | 10 #include "src/code-stubs.h" |
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406 } else { | 406 } else { |
407 __ Bind(&return_label_); | 407 __ Bind(&return_label_); |
408 if (FLAG_trace) { | 408 if (FLAG_trace) { |
409 // Push the return value on the stack as the parameter. | 409 // Push the return value on the stack as the parameter. |
410 // Runtime::TraceExit returns its parameter in x0. | 410 // Runtime::TraceExit returns its parameter in x0. |
411 __ Push(result_register()); | 411 __ Push(result_register()); |
412 __ CallRuntime(Runtime::kTraceExit, 1); | 412 __ CallRuntime(Runtime::kTraceExit, 1); |
413 DCHECK(x0.Is(result_register())); | 413 DCHECK(x0.Is(result_register())); |
414 } | 414 } |
415 // Pretend that the exit is a backwards jump to the entry. | 415 // Pretend that the exit is a backwards jump to the entry. |
416 int weight = 1; | 416 int distance = masm_->pc_offset() + kCodeSizeMultiplier / 2; |
417 if (info_->ShouldSelfOptimize()) { | 417 int weight = |
418 weight = FLAG_interrupt_budget / FLAG_self_opt_count; | 418 Min(kMaxBackEdgeWeight, Max(1, distance / kCodeSizeMultiplier)); |
419 } else { | |
420 int distance = masm_->pc_offset() + kCodeSizeMultiplier / 2; | |
421 weight = Min(kMaxBackEdgeWeight, | |
422 Max(1, distance / kCodeSizeMultiplier)); | |
423 } | |
424 EmitProfilingCounterDecrement(weight); | 419 EmitProfilingCounterDecrement(weight); |
425 Label ok; | 420 Label ok; |
426 __ B(pl, &ok); | 421 __ B(pl, &ok); |
427 __ Push(x0); | 422 __ Push(x0); |
428 __ Call(isolate()->builtins()->InterruptCheck(), | 423 __ Call(isolate()->builtins()->InterruptCheck(), |
429 RelocInfo::CODE_TARGET); | 424 RelocInfo::CODE_TARGET); |
430 __ Pop(x0); | 425 __ Pop(x0); |
431 EmitProfilingCounterReset(); | 426 EmitProfilingCounterReset(); |
432 __ Bind(&ok); | 427 __ Bind(&ok); |
433 | 428 |
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5278 return previous_; | 5273 return previous_; |
5279 } | 5274 } |
5280 | 5275 |
5281 | 5276 |
5282 #undef __ | 5277 #undef __ |
5283 | 5278 |
5284 | 5279 |
5285 } } // namespace v8::internal | 5280 } } // namespace v8::internal |
5286 | 5281 |
5287 #endif // V8_TARGET_ARCH_ARM64 | 5282 #endif // V8_TARGET_ARCH_ARM64 |
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