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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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577 Register scratch2, | 577 Register scratch2, |
578 Register scratch3, | 578 Register scratch3, |
579 Handle<JSObject> interceptor_holder, | 579 Handle<JSObject> interceptor_holder, |
580 LookupResult* lookup, | 580 LookupResult* lookup, |
581 Handle<String> name, | 581 Handle<String> name, |
582 const CallOptimization& optimization, | 582 const CallOptimization& optimization, |
583 Label* miss_label) { | 583 Label* miss_label) { |
584 ASSERT(optimization.is_constant_call()); | 584 ASSERT(optimization.is_constant_call()); |
585 ASSERT(!lookup->holder()->IsGlobalObject()); | 585 ASSERT(!lookup->holder()->IsGlobalObject()); |
586 | 586 |
587 int depth1 = kInvalidProtoDepth; | 587 bool can_do_fast_api_call = !lookup->holder()->IsGlobalObject() && |
588 int depth2 = kInvalidProtoDepth; | 588 optimization.is_simple_api_call() && |
589 bool can_do_fast_api_call = false; | 589 optimization.IsCompatibleReceiver(object); |
590 if (optimization.is_simple_api_call() && | |
591 !lookup->holder()->IsGlobalObject()) { | |
592 depth1 = optimization.GetPrototypeDepthOfExpectedType( | |
593 object, interceptor_holder); | |
594 if (depth1 == kInvalidProtoDepth) { | |
595 depth2 = optimization.GetPrototypeDepthOfExpectedType( | |
596 interceptor_holder, Handle<JSObject>(lookup->holder())); | |
597 } | |
598 can_do_fast_api_call = | |
599 depth1 != kInvalidProtoDepth || depth2 != kInvalidProtoDepth; | |
600 } | |
601 | 590 |
602 Counters* counters = masm->isolate()->counters(); | 591 Counters* counters = masm->isolate()->counters(); |
603 __ IncrementCounter(counters->call_const_interceptor(), 1); | 592 __ IncrementCounter(counters->call_const_interceptor(), 1); |
604 | 593 |
605 if (can_do_fast_api_call) { | 594 if (can_do_fast_api_call) { |
606 __ IncrementCounter(counters->call_const_interceptor_fast_api(), 1); | 595 __ IncrementCounter(counters->call_const_interceptor_fast_api(), 1); |
607 ReserveSpaceForFastApiCall(masm, scratch1); | 596 ReserveSpaceForFastApiCall(masm, scratch1); |
608 } | 597 } |
609 | 598 |
610 // Check that the maps from receiver to interceptor's holder | 599 // Check that the maps from receiver to interceptor's holder |
611 // haven't changed and thus we can invoke interceptor. | 600 // haven't changed and thus we can invoke interceptor. |
612 Label miss_cleanup; | 601 Label miss_cleanup; |
613 Label* miss = can_do_fast_api_call ? &miss_cleanup : miss_label; | 602 Label* miss = can_do_fast_api_call ? &miss_cleanup : miss_label; |
| 603 int depth = can_do_fast_api_call ? 0 : kInvalidProtoDepth; |
614 Register holder = | 604 Register holder = |
615 stub_compiler_->CheckPrototypes(object, receiver, interceptor_holder, | 605 stub_compiler_->CheckPrototypes(object, receiver, interceptor_holder, |
616 scratch1, scratch2, scratch3, | 606 scratch1, scratch2, scratch3, |
617 name, depth1, miss); | 607 name, depth, miss); |
618 | 608 |
619 // Invoke an interceptor and if it provides a value, | 609 // Invoke an interceptor and if it provides a value, |
620 // branch to |regular_invoke|. | 610 // branch to |regular_invoke|. |
621 Label regular_invoke; | 611 Label regular_invoke; |
622 LoadWithInterceptor(masm, receiver, holder, interceptor_holder, | 612 LoadWithInterceptor(masm, receiver, holder, interceptor_holder, |
623 ®ular_invoke); | 613 ®ular_invoke); |
624 | 614 |
625 // Interceptor returned nothing for this property. Try to use cached | 615 // Interceptor returned nothing for this property. Try to use cached |
626 // constant function. | 616 // constant function. |
627 | 617 |
628 // Check that the maps from interceptor's holder to constant function's | 618 // Check that the maps from interceptor's holder to constant function's |
629 // holder haven't changed and thus we can use cached constant function. | 619 // holder haven't changed and thus we can use cached constant function. |
| 620 // TODO(2268): Switch to return holder once embedders have adapted. |
630 if (*interceptor_holder != lookup->holder()) { | 621 if (*interceptor_holder != lookup->holder()) { |
631 stub_compiler_->CheckPrototypes(interceptor_holder, receiver, | 622 stub_compiler_->CheckPrototypes(interceptor_holder, receiver, |
632 Handle<JSObject>(lookup->holder()), | 623 Handle<JSObject>(lookup->holder()), |
633 scratch1, scratch2, scratch3, | 624 scratch1, scratch2, scratch3, |
634 name, depth2, miss); | 625 name, kInvalidProtoDepth, miss); |
635 } else { | |
636 // CheckPrototypes has a side effect of fetching a 'holder' | |
637 // for API (object which is instanceof for the signature). It's | |
638 // safe to omit it here, as if present, it should be fetched | |
639 // by the previous CheckPrototypes. | |
640 ASSERT(depth2 == kInvalidProtoDepth); | |
641 } | 626 } |
642 | 627 |
643 // Invoke function. | 628 // Invoke function. |
644 if (can_do_fast_api_call) { | 629 if (can_do_fast_api_call) { |
645 GenerateFastApiCall(masm, optimization, arguments_.immediate()); | 630 GenerateFastApiCall(masm, optimization, arguments_.immediate()); |
646 } else { | 631 } else { |
647 CallKind call_kind = CallICBase::Contextual::decode(extra_state_) | 632 CallKind call_kind = CallICBase::Contextual::decode(extra_state_) |
648 ? CALL_AS_FUNCTION | 633 ? CALL_AS_FUNCTION |
649 : CALL_AS_METHOD; | 634 : CALL_AS_METHOD; |
650 __ InvokeFunction(optimization.constant_function(), arguments_, | 635 __ InvokeFunction(optimization.constant_function(), arguments_, |
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2302 Handle<JSObject> holder, | 2287 Handle<JSObject> holder, |
2303 Handle<JSGlobalPropertyCell> cell, | 2288 Handle<JSGlobalPropertyCell> cell, |
2304 Handle<JSFunction> function, | 2289 Handle<JSFunction> function, |
2305 Handle<String> name) { | 2290 Handle<String> name) { |
2306 ASSERT(optimization.is_simple_api_call()); | 2291 ASSERT(optimization.is_simple_api_call()); |
2307 // Bail out if object is a global object as we don't want to | 2292 // Bail out if object is a global object as we don't want to |
2308 // repatch it to global receiver. | 2293 // repatch it to global receiver. |
2309 if (object->IsGlobalObject()) return Handle<Code>::null(); | 2294 if (object->IsGlobalObject()) return Handle<Code>::null(); |
2310 if (!cell.is_null()) return Handle<Code>::null(); | 2295 if (!cell.is_null()) return Handle<Code>::null(); |
2311 if (!object->IsJSObject()) return Handle<Code>::null(); | 2296 if (!object->IsJSObject()) return Handle<Code>::null(); |
2312 int depth = optimization.GetPrototypeDepthOfExpectedType( | 2297 if (!optimization.IsCompatibleReceiver(object)) return Handle<Code>::null(); |
2313 Handle<JSObject>::cast(object), holder); | |
2314 if (depth == kInvalidProtoDepth) return Handle<Code>::null(); | |
2315 | 2298 |
2316 Label miss, miss_before_stack_reserved; | 2299 Label miss, miss_before_stack_reserved; |
2317 | 2300 |
2318 GenerateNameCheck(name, &miss_before_stack_reserved); | 2301 GenerateNameCheck(name, &miss_before_stack_reserved); |
2319 | 2302 |
2320 // Get the receiver from the stack. | 2303 // Get the receiver from the stack. |
2321 const int argc = arguments().immediate(); | 2304 const int argc = arguments().immediate(); |
2322 __ mov(edx, Operand(esp, (argc + 1) * kPointerSize)); | 2305 __ mov(edx, Operand(esp, (argc + 1) * kPointerSize)); |
2323 | 2306 |
2324 // Check that the receiver isn't a smi. | 2307 // Check that the receiver isn't a smi. |
2325 __ JumpIfSmi(edx, &miss_before_stack_reserved); | 2308 __ JumpIfSmi(edx, &miss_before_stack_reserved); |
2326 | 2309 |
2327 Counters* counters = isolate()->counters(); | 2310 Counters* counters = isolate()->counters(); |
2328 __ IncrementCounter(counters->call_const(), 1); | 2311 __ IncrementCounter(counters->call_const(), 1); |
2329 __ IncrementCounter(counters->call_const_fast_api(), 1); | 2312 __ IncrementCounter(counters->call_const_fast_api(), 1); |
2330 | 2313 |
2331 // Allocate space for v8::Arguments implicit values. Must be initialized | 2314 // Allocate space for v8::Arguments implicit values. Must be initialized |
2332 // before calling any runtime function. | 2315 // before calling any runtime function. |
2333 __ sub(esp, Immediate(kFastApiCallArguments * kPointerSize)); | 2316 __ sub(esp, Immediate(kFastApiCallArguments * kPointerSize)); |
2334 | 2317 |
2335 // Check that the maps haven't changed and find a Holder as a side effect. | 2318 // Check that the maps haven't changed and find holder as a side effect. |
| 2319 // TODO(2268): Switch to return holder once embedders have adapted. |
2336 CheckPrototypes(Handle<JSObject>::cast(object), edx, holder, ebx, eax, edi, | 2320 CheckPrototypes(Handle<JSObject>::cast(object), edx, holder, ebx, eax, edi, |
2337 name, depth, &miss); | 2321 name, 0, &miss); |
2338 | 2322 |
2339 // Move the return address on top of the stack. | 2323 // Move the return address on top of the stack. |
2340 __ mov(eax, Operand(esp, 4 * kPointerSize)); | 2324 __ mov(eax, Operand(esp, 4 * kPointerSize)); |
2341 __ mov(Operand(esp, 0 * kPointerSize), eax); | 2325 __ mov(Operand(esp, 0 * kPointerSize), eax); |
2342 | 2326 |
2343 // esp[2 * kPointerSize] is uninitialized, esp[3 * kPointerSize] contains | 2327 // esp[2 * kPointerSize] is uninitialized, esp[3 * kPointerSize] contains |
2344 // duplicate of return address and will be overwritten. | 2328 // duplicate of return address and will be overwritten. |
2345 GenerateFastApiCall(masm(), optimization, argc); | 2329 GenerateFastApiCall(masm(), optimization, argc); |
2346 | 2330 |
2347 __ bind(&miss); | 2331 __ bind(&miss); |
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4394 __ jmp(ic_slow, RelocInfo::CODE_TARGET); | 4378 __ jmp(ic_slow, RelocInfo::CODE_TARGET); |
4395 } | 4379 } |
4396 } | 4380 } |
4397 | 4381 |
4398 | 4382 |
4399 #undef __ | 4383 #undef __ |
4400 | 4384 |
4401 } } // namespace v8::internal | 4385 } } // namespace v8::internal |
4402 | 4386 |
4403 #endif // V8_TARGET_ARCH_IA32 | 4387 #endif // V8_TARGET_ARCH_IA32 |
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