13ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch// Copyright 2012 the V8 project authors. All rights reserved. 2a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Redistribution and use in source and binary forms, with or without 3a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// modification, are permitted provided that the following conditions are 4a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// met: 5a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 6a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Redistributions of source code must retain the above copyright 7a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// notice, this list of conditions and the following disclaimer. 8a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Redistributions in binary form must reproduce the above 9a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// copyright notice, this list of conditions and the following 10a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// disclaimer in the documentation and/or other materials provided 11a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// with the distribution. 12a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Neither the name of Google Inc. nor the names of its 13a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// contributors may be used to endorse or promote products derived 14a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// from this software without specific prior written permission. 15a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 16a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 28a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#include "v8.h" 29a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 30a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#include "accessors.h" 31a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#include "api.h" 32a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#include "arguments.h" 33b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch#include "codegen.h" 34a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#include "execution.h" 35a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#include "ic-inl.h" 36a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#include "runtime.h" 37a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#include "stub-cache.h" 38a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 39a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blocknamespace v8 { 40a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blocknamespace internal { 41a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 42a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 433ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdochchar IC::TransitionMarkFromState(IC::State state) { 44a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block switch (state) { 45a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case UNINITIALIZED: return '0'; 46a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case PREMONOMORPHIC: return 'P'; 47a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case MONOMORPHIC: return '1'; 48a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case MONOMORPHIC_PROTOTYPE_FAILURE: return '^'; 493ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case MEGAMORPHIC: return IsGeneric() ? 'G' : 'N'; 50a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 51a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // We never see the debugger states here, because the state is 52a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // computed from the original code - not the patched code. Let 53a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // these cases fall through to the unreachable code below. 54a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case DEBUG_BREAK: break; 55a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case DEBUG_PREPARE_STEP_IN: break; 56a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 57a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block UNREACHABLE(); 58a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return 0; 59a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 60a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 61a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid IC::TraceIC(const char* type, 627f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch Handle<Object> name, 63a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block State old_state, 64589d6979ff2ef66fca2d8fa51404c369ca5e9250Ben Murdoch Code* new_target) { 65a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (FLAG_trace_ic) { 666ded16be15dd865a9b21ea304d5273c8be299c87Steve Block State new_state = StateFrom(new_target, 6744f0eee88ff00398ff7f715fab053374d808c90dSteve Block HEAP->undefined_value(), 6844f0eee88ff00398ff7f715fab053374d808c90dSteve Block HEAP->undefined_value()); 69257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch PrintF("[%s in ", type); 70257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch StackFrameIterator it; 71257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch while (it.frame()->fp() != this->fp()) it.Advance(); 72257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch StackFrame* raw_frame = it.frame(); 73257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (raw_frame->is_internal()) { 74257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Isolate* isolate = new_target->GetIsolate(); 75257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Code* apply_builtin = isolate->builtins()->builtin( 76257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Builtins::kFunctionApply); 77257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (raw_frame->unchecked_code() == apply_builtin) { 78257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch PrintF("apply from "); 79257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch it.Advance(); 80257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch raw_frame = it.frame(); 81257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 82257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 833ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch JavaScriptFrame::PrintTop(stdout, false, true); 843ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch bool new_can_grow = 853ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Code::GetKeyedAccessGrowMode(new_target->extra_ic_state()) == 863ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ALLOW_JSARRAY_GROWTH; 873ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch PrintF(" (%c->%c%s)", 88a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block TransitionMarkFromState(old_state), 893ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch TransitionMarkFromState(new_state), 903ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch new_can_grow ? ".GROW" : ""); 91a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block name->Print(); 92a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block PrintF("]\n"); 93a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 94a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 95592a9fc1d8ea420377a2e7efd0600e20b058be2bBen Murdoch 963ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch#define TRACE_GENERIC_IC(type, reason) \ 973ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch do { \ 983ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (FLAG_trace_ic) { \ 993ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch PrintF("[%s patching generic stub in ", type); \ 1003ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch JavaScriptFrame::PrintTop(stdout, false, true); \ 1013ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch PrintF(" (%s)]\n", reason); \ 1023ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } \ 1033ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } while (false) 1043ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 1053ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch#else 1063ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch#define TRACE_GENERIC_IC(type, reason) 1073ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch#endif // DEBUG 1083ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 1093ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch#define TRACE_IC(type, name, old_state, new_target) \ 1103ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT((TraceIC(type, name, old_state, new_target), true)) 111a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 11244f0eee88ff00398ff7f715fab053374d808c90dSteve BlockIC::IC(FrameDepth depth, Isolate* isolate) : isolate_(isolate) { 11344f0eee88ff00398ff7f715fab053374d808c90dSteve Block ASSERT(isolate == Isolate::Current()); 114a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // To improve the performance of the (much used) IC code, we unfold 115a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // a few levels of the stack frame iteration code. This yields a 116a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // ~35% speedup when running DeltaBlue with the '--nouse-ic' flag. 11744f0eee88ff00398ff7f715fab053374d808c90dSteve Block const Address entry = 11844f0eee88ff00398ff7f715fab053374d808c90dSteve Block Isolate::c_entry_fp(isolate->thread_local_top()); 119a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Address* pc_address = 120a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block reinterpret_cast<Address*>(entry + ExitFrameConstants::kCallerPCOffset); 121a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Address fp = Memory::Address_at(entry + ExitFrameConstants::kCallerFPOffset); 122a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If there's another JavaScript frame on the stack, we need to look 123a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // one frame further down the stack to find the frame pointer and 124a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the return address stack slot. 125a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (depth == EXTRA_CALL_FRAME) { 126a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block const int kCallerPCOffset = StandardFrameConstants::kCallerPCOffset; 127a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block pc_address = reinterpret_cast<Address*>(fp + kCallerPCOffset); 128a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block fp = Memory::Address_at(fp + StandardFrameConstants::kCallerFPOffset); 129a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 130a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 131a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block StackFrameIterator it; 132a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block for (int i = 0; i < depth + 1; i++) it.Advance(); 133a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block StackFrame* frame = it.frame(); 134a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(fp == frame->fp() && pc_address == frame->pc_address()); 135a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 136a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block fp_ = fp; 137a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block pc_address_ = pc_address; 138a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 139a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 140a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 141a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef ENABLE_DEBUGGER_SUPPORT 1423ef787dbeca8a5fb1086949cda830dccee07bfbdBen MurdochAddress IC::OriginalCodeAddress() const { 143a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block HandleScope scope; 144a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Compute the JavaScript frame for the frame pointer of this IC 145a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // structure. We need this to be able to find the function 146a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // corresponding to the frame. 147a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block StackFrameIterator it; 148a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block while (it.frame()->fp() != this->fp()) it.Advance(); 149a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block JavaScriptFrame* frame = JavaScriptFrame::cast(it.frame()); 150a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Find the function on the stack and both the active code for the 151a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // function and the original code. 152a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block JSFunction* function = JSFunction::cast(frame->function()); 153a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Handle<SharedFunctionInfo> shared(function->shared()); 154a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Code* code = shared->code(); 155a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(Debug::HasDebugInfo(shared)); 156a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Code* original_code = Debug::GetDebugInfo(shared)->original_code(); 157a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(original_code->IsCode()); 158a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Get the address of the call site in the active code. This is the 159a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // place where the call to DebugBreakXXX is and where the IC 160a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // normally would be. 161a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Address addr = pc() - Assembler::kCallTargetAddressOffset; 162a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Return the address in the original code. This is the place where 163a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the call which has been overwritten by the DebugBreakXXX resides 164a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // and the place where the inline cache system should look. 165d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block intptr_t delta = 166d0582a6c46733687d045e4188a1bcd0123c758a1Steve Block original_code->instruction_start() - code->instruction_start(); 167a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return addr + delta; 168a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 169a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 170a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1718defd9ff6930b4e24729971a61cf7469daf119beSteve Block 17244f0eee88ff00398ff7f715fab053374d808c90dSteve Blockstatic bool HasNormalObjectsInPrototypeChain(Isolate* isolate, 17344f0eee88ff00398ff7f715fab053374d808c90dSteve Block LookupResult* lookup, 1748defd9ff6930b4e24729971a61cf7469daf119beSteve Block Object* receiver) { 17544f0eee88ff00398ff7f715fab053374d808c90dSteve Block Object* end = lookup->IsProperty() 1763ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ? lookup->holder() : Object::cast(isolate->heap()->null_value()); 1778defd9ff6930b4e24729971a61cf7469daf119beSteve Block for (Object* current = receiver; 1788defd9ff6930b4e24729971a61cf7469daf119beSteve Block current != end; 1798defd9ff6930b4e24729971a61cf7469daf119beSteve Block current = current->GetPrototype()) { 1808defd9ff6930b4e24729971a61cf7469daf119beSteve Block if (current->IsJSObject() && 1818defd9ff6930b4e24729971a61cf7469daf119beSteve Block !JSObject::cast(current)->HasFastProperties() && 1828defd9ff6930b4e24729971a61cf7469daf119beSteve Block !current->IsJSGlobalProxy() && 1838defd9ff6930b4e24729971a61cf7469daf119beSteve Block !current->IsJSGlobalObject()) { 1848defd9ff6930b4e24729971a61cf7469daf119beSteve Block return true; 1858defd9ff6930b4e24729971a61cf7469daf119beSteve Block } 1868defd9ff6930b4e24729971a61cf7469daf119beSteve Block } 1878defd9ff6930b4e24729971a61cf7469daf119beSteve Block 1888defd9ff6930b4e24729971a61cf7469daf119beSteve Block return false; 1898defd9ff6930b4e24729971a61cf7469daf119beSteve Block} 1908defd9ff6930b4e24729971a61cf7469daf119beSteve Block 1918defd9ff6930b4e24729971a61cf7469daf119beSteve Block 192b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdochstatic bool TryRemoveInvalidPrototypeDependentStub(Code* target, 193b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Object* receiver, 194b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Object* name) { 1958defd9ff6930b4e24729971a61cf7469daf119beSteve Block InlineCacheHolderFlag cache_holder = 1968defd9ff6930b4e24729971a61cf7469daf119beSteve Block Code::ExtractCacheHolderFromFlags(target->flags()); 1978defd9ff6930b4e24729971a61cf7469daf119beSteve Block 1988defd9ff6930b4e24729971a61cf7469daf119beSteve Block if (cache_holder == OWN_MAP && !receiver->IsJSObject()) { 1998defd9ff6930b4e24729971a61cf7469daf119beSteve Block // The stub was generated for JSObject but called for non-JSObject. 20080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // IC::GetCodeCacheHolder is not applicable. 201b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return false; 2028defd9ff6930b4e24729971a61cf7469daf119beSteve Block } else if (cache_holder == PROTOTYPE_MAP && 2038defd9ff6930b4e24729971a61cf7469daf119beSteve Block receiver->GetPrototype()->IsNull()) { 20480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // IC::GetCodeCacheHolder is not applicable. 205b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return false; 2068defd9ff6930b4e24729971a61cf7469daf119beSteve Block } 20780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Map* map = IC::GetCodeCacheHolder(receiver, cache_holder)->map(); 208a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 209a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Decide whether the inline cache failed because of changes to the 210a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // receiver itself or changes to one of its prototypes. 211a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 212a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If there are changes to the receiver itself, the map of the 213a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // receiver will have changed and the current target will not be in 214a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the receiver map's code cache. Therefore, if the current target 215a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // is in the receiver map's code cache, the inline cache failed due 216a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // to prototype check failure. 2176ded16be15dd865a9b21ea304d5273c8be299c87Steve Block int index = map->IndexInCodeCache(name, target); 218a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (index >= 0) { 2196ded16be15dd865a9b21ea304d5273c8be299c87Steve Block map->RemoveFromCodeCache(String::cast(name), target, index); 220b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return true; 221b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 222a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 223b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return false; 224b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch} 225b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 226b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 227b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben MurdochIC::State IC::StateFrom(Code* target, Object* receiver, Object* name) { 228b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch IC::State state = target->ic_state(); 229b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 230b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch if (state != MONOMORPHIC || !name->IsString()) return state; 231b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch if (receiver->IsUndefined() || receiver->IsNull()) return state; 232b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 233b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // For keyed load/store/call, the most likely cause of cache failure is 234b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // that the key has changed. We do not distinguish between 235b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // prototype and non-prototype failures for keyed access. 236b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Code::Kind kind = target->kind(); 237b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch if (kind == Code::KEYED_LOAD_IC || 238b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch kind == Code::KEYED_STORE_IC || 239b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch kind == Code::KEYED_CALL_IC) { 240b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return MONOMORPHIC; 241b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 242b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 243b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // Remove the target from the code cache if it became invalid 244b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // because of changes in the prototype chain to avoid hitting it 245b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // again. 246b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // Call stubs handle this later to allow extra IC state 247b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // transitions. 248b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch if (kind != Code::CALL_IC && 249b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch TryRemoveInvalidPrototypeDependentStub(target, receiver, name)) { 250a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return MONOMORPHIC_PROTOTYPE_FAILURE; 251a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 252a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 253a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The builtins object is special. It only changes when JavaScript 254a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // builtins are loaded lazily. It is important to keep inline 255a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // caches for the builtins object monomorphic. Therefore, if we get 256a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // an inline cache miss for the builtins object after lazily loading 257a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // JavaScript builtins, we return uninitialized as the state to 258a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // force the inline cache back to monomorphic state. 259a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (receiver->IsJSBuiltinsObject()) { 260a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return UNINITIALIZED; 261a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 262a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 263a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return MONOMORPHIC; 264a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 265a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 266a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 267a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockRelocInfo::Mode IC::ComputeMode() { 268a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Address addr = address(); 26944f0eee88ff00398ff7f715fab053374d808c90dSteve Block Code* code = Code::cast(isolate()->heap()->FindCodeObject(addr)); 270a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block for (RelocIterator it(code, RelocInfo::kCodeTargetMask); 271a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block !it.done(); it.next()) { 272a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block RelocInfo* info = it.rinfo(); 273a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (info->pc() == addr) return info->rmode(); 274a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 275a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block UNREACHABLE(); 276a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return RelocInfo::NONE; 277a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 278a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 279a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 280a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockFailure* IC::TypeError(const char* type, 281a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Handle<Object> object, 2827f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch Handle<Object> key) { 28344f0eee88ff00398ff7f715fab053374d808c90dSteve Block HandleScope scope(isolate()); 2847f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch Handle<Object> args[2] = { key, object }; 28544f0eee88ff00398ff7f715fab053374d808c90dSteve Block Handle<Object> error = isolate()->factory()->NewTypeError( 28644f0eee88ff00398ff7f715fab053374d808c90dSteve Block type, HandleVector(args, 2)); 28744f0eee88ff00398ff7f715fab053374d808c90dSteve Block return isolate()->Throw(*error); 288a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 289a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 290a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 291a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockFailure* IC::ReferenceError(const char* type, Handle<String> name) { 29244f0eee88ff00398ff7f715fab053374d808c90dSteve Block HandleScope scope(isolate()); 29344f0eee88ff00398ff7f715fab053374d808c90dSteve Block Handle<Object> error = isolate()->factory()->NewReferenceError( 29444f0eee88ff00398ff7f715fab053374d808c90dSteve Block type, HandleVector(&name, 1)); 29544f0eee88ff00398ff7f715fab053374d808c90dSteve Block return isolate()->Throw(*error); 296a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 297a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 298a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2998f9999fcc44cfd4f5e1140c6678bbca4cf8ea1c7Ben Murdochstatic int ComputeTypeInfoCountDelta(IC::State old_state, IC::State new_state) { 3008f9999fcc44cfd4f5e1140c6678bbca4cf8ea1c7Ben Murdoch bool was_uninitialized = 3018f9999fcc44cfd4f5e1140c6678bbca4cf8ea1c7Ben Murdoch old_state == UNINITIALIZED || old_state == PREMONOMORPHIC; 3028f9999fcc44cfd4f5e1140c6678bbca4cf8ea1c7Ben Murdoch bool is_uninitialized = 3038f9999fcc44cfd4f5e1140c6678bbca4cf8ea1c7Ben Murdoch new_state == UNINITIALIZED || new_state == PREMONOMORPHIC; 3048f9999fcc44cfd4f5e1140c6678bbca4cf8ea1c7Ben Murdoch return (was_uninitialized && !is_uninitialized) ? 1 : 3058f9999fcc44cfd4f5e1140c6678bbca4cf8ea1c7Ben Murdoch (!was_uninitialized && is_uninitialized) ? -1 : 0; 3068f9999fcc44cfd4f5e1140c6678bbca4cf8ea1c7Ben Murdoch} 3078f9999fcc44cfd4f5e1140c6678bbca4cf8ea1c7Ben Murdoch 3088f9999fcc44cfd4f5e1140c6678bbca4cf8ea1c7Ben Murdoch 3093ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdochvoid IC::PostPatching(Address address, Code* target, Code* old_target) { 3108f9999fcc44cfd4f5e1140c6678bbca4cf8ea1c7Ben Murdoch if (FLAG_type_info_threshold == 0 && !FLAG_watch_ic_patching) { 3118f9999fcc44cfd4f5e1140c6678bbca4cf8ea1c7Ben Murdoch return; 3128f9999fcc44cfd4f5e1140c6678bbca4cf8ea1c7Ben Murdoch } 3138f9999fcc44cfd4f5e1140c6678bbca4cf8ea1c7Ben Murdoch Code* host = target->GetHeap()->isolate()-> 3148f9999fcc44cfd4f5e1140c6678bbca4cf8ea1c7Ben Murdoch inner_pointer_to_code_cache()->GetCacheEntry(address)->code; 3158f9999fcc44cfd4f5e1140c6678bbca4cf8ea1c7Ben Murdoch if (host->kind() != Code::FUNCTION) return; 3168f9999fcc44cfd4f5e1140c6678bbca4cf8ea1c7Ben Murdoch 3178f9999fcc44cfd4f5e1140c6678bbca4cf8ea1c7Ben Murdoch if (FLAG_type_info_threshold > 0 && 3188f9999fcc44cfd4f5e1140c6678bbca4cf8ea1c7Ben Murdoch old_target->is_inline_cache_stub() && 3198f9999fcc44cfd4f5e1140c6678bbca4cf8ea1c7Ben Murdoch target->is_inline_cache_stub()) { 3208f9999fcc44cfd4f5e1140c6678bbca4cf8ea1c7Ben Murdoch int delta = ComputeTypeInfoCountDelta(old_target->ic_state(), 3218f9999fcc44cfd4f5e1140c6678bbca4cf8ea1c7Ben Murdoch target->ic_state()); 3228f9999fcc44cfd4f5e1140c6678bbca4cf8ea1c7Ben Murdoch // Not all Code objects have TypeFeedbackInfo. 3238f9999fcc44cfd4f5e1140c6678bbca4cf8ea1c7Ben Murdoch if (delta != 0 && host->type_feedback_info()->IsTypeFeedbackInfo()) { 3248f9999fcc44cfd4f5e1140c6678bbca4cf8ea1c7Ben Murdoch TypeFeedbackInfo* info = 3258f9999fcc44cfd4f5e1140c6678bbca4cf8ea1c7Ben Murdoch TypeFeedbackInfo::cast(host->type_feedback_info()); 3268f9999fcc44cfd4f5e1140c6678bbca4cf8ea1c7Ben Murdoch info->set_ic_with_type_info_count( 3278f9999fcc44cfd4f5e1140c6678bbca4cf8ea1c7Ben Murdoch info->ic_with_type_info_count() + delta); 3283ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 3293ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 3303ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (FLAG_watch_ic_patching) { 3318f9999fcc44cfd4f5e1140c6678bbca4cf8ea1c7Ben Murdoch host->set_profiler_ticks(0); 3323ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Isolate::Current()->runtime_profiler()->NotifyICChanged(); 3333ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 3348f9999fcc44cfd4f5e1140c6678bbca4cf8ea1c7Ben Murdoch // TODO(2029): When an optimized function is patched, it would 3358f9999fcc44cfd4f5e1140c6678bbca4cf8ea1c7Ben Murdoch // be nice to propagate the corresponding type information to its 3368f9999fcc44cfd4f5e1140c6678bbca4cf8ea1c7Ben Murdoch // unoptimized version for the benefit of later inlining. 3373ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch} 3383ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 3393ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 340a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid IC::Clear(Address address) { 341a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Code* target = GetTargetAtAddress(address); 342a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 343a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Don't clear debug break inline cache as it will remove the break point. 344a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (target->ic_state() == DEBUG_BREAK) return; 345a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 346a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block switch (target->kind()) { 347a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case Code::LOAD_IC: return LoadIC::Clear(address, target); 34844f0eee88ff00398ff7f715fab053374d808c90dSteve Block case Code::KEYED_LOAD_IC: 34944f0eee88ff00398ff7f715fab053374d808c90dSteve Block return KeyedLoadIC::Clear(address, target); 350a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case Code::STORE_IC: return StoreIC::Clear(address, target); 35144f0eee88ff00398ff7f715fab053374d808c90dSteve Block case Code::KEYED_STORE_IC: 35244f0eee88ff00398ff7f715fab053374d808c90dSteve Block return KeyedStoreIC::Clear(address, target); 353a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case Code::CALL_IC: return CallIC::Clear(address, target); 3547f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch case Code::KEYED_CALL_IC: return KeyedCallIC::Clear(address, target); 355257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch case Code::UNARY_OP_IC: 356257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch case Code::BINARY_OP_IC: 357b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case Code::COMPARE_IC: 35869a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch case Code::TO_BOOLEAN_IC: 359b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Clearing these is tricky and does not 360b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // make any performance difference. 361b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch return; 362a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block default: UNREACHABLE(); 363a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 364a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 365a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 366a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 3677f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdochvoid CallICBase::Clear(Address address, Code* target) { 368257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch bool contextual = CallICBase::Contextual::decode(target->extra_ic_state()); 369a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block State state = target->ic_state(); 370a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (state == UNINITIALIZED) return; 371a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Code* code = 37244f0eee88ff00398ff7f715fab053374d808c90dSteve Block Isolate::Current()->stub_cache()->FindCallInitialize( 37344f0eee88ff00398ff7f715fab053374d808c90dSteve Block target->arguments_count(), 374257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch contextual ? RelocInfo::CODE_TARGET_CONTEXT : RelocInfo::CODE_TARGET, 37544f0eee88ff00398ff7f715fab053374d808c90dSteve Block target->kind()); 376a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block SetTargetAtAddress(address, code); 377a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 378a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 379a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 380a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid KeyedLoadIC::Clear(Address address, Code* target) { 381a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (target->ic_state() == UNINITIALIZED) return; 382a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Make sure to also clear the map used in inline fast cases. If we 383a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // do not clear these maps, cached code can keep objects alive 384a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // through the embedded maps. 385a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block SetTargetAtAddress(address, initialize_stub()); 386a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 387a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 388a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 389a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid LoadIC::Clear(Address address, Code* target) { 390a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (target->ic_state() == UNINITIALIZED) return; 391a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block SetTargetAtAddress(address, initialize_stub()); 392a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 393a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 394a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 395a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid StoreIC::Clear(Address address, Code* target) { 396a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (target->ic_state() == UNINITIALIZED) return; 3971e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block SetTargetAtAddress(address, 3983ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch (Code::GetStrictMode(target->extra_ic_state()) == kStrictMode) 3991e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ? initialize_stub_strict() 4001e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block : initialize_stub()); 401a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 402a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 403a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 404a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid KeyedStoreIC::Clear(Address address, Code* target) { 405a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (target->ic_state() == UNINITIALIZED) return; 406e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch SetTargetAtAddress(address, 4073ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch (Code::GetStrictMode(target->extra_ic_state()) == kStrictMode) 408e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch ? initialize_stub_strict() 409e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch : initialize_stub()); 410a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 411a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 412a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 413a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockstatic bool HasInterceptorGetter(JSObject* object) { 414a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return !object->GetNamedInterceptor()->getter()->IsUndefined(); 415a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 416a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 417a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 4183ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdochstatic void LookupForRead(Handle<Object> object, 4193ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<String> name, 420a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block LookupResult* lookup) { 421a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Skip all the objects with named interceptors, but 422a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // without actual getter. 423a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block while (true) { 4243ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch object->Lookup(*name, lookup); 425a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Besides normal conditions (property not found or it's not 426402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu // an interceptor), bail out if lookup is not cacheable: we won't 427a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // be able to IC it anyway and regular lookup should work fine. 428402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu if (!lookup->IsFound() 429402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu || (lookup->type() != INTERCEPTOR) 430402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu || !lookup->IsCacheable()) { 431a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return; 432a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 433a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 4343ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<JSObject> holder(lookup->holder()); 4353ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (HasInterceptorGetter(*holder)) { 436a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return; 437a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 438a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 4393ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch holder->LocalLookupRealNamedProperty(*name, lookup); 440402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu if (lookup->IsProperty()) { 441a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(lookup->type() != INTERCEPTOR); 442a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return; 443a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 444a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 4453ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Object> proto(holder->GetPrototype()); 446a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (proto->IsNull()) { 447a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block lookup->NotFound(); 448a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return; 449a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 450a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 451a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block object = proto; 452a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 453a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 454a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 455a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 4563ef787dbeca8a5fb1086949cda830dccee07bfbdBen MurdochHandle<Object> CallICBase::TryCallAsFunction(Handle<Object> object) { 4573ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Object> delegate = Execution::GetFunctionDelegate(object); 458a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 4593ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (delegate->IsJSFunction() && !object->IsJSFunctionProxy()) { 460a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Patch the receiver and use the delegate as the function to 4613ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // invoke. This is used for invoking objects as if they were functions. 4623ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch const int argc = target()->arguments_count(); 463a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block StackFrameLocator locator; 464a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block JavaScriptFrame* frame = locator.FindJavaScriptFrame(0); 465a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int index = frame->ComputeExpressionsCount() - (argc + 1); 4663ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch frame->SetExpression(index, *object); 467a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 468a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 4693ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return delegate; 470a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 471a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 4729dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen 473e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdochvoid CallICBase::ReceiverToObjectIfRequired(Handle<Object> callee, 474e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch Handle<Object> object) { 4753ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch while (callee->IsJSFunctionProxy()) { 4763ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch callee = Handle<Object>(JSFunctionProxy::cast(*callee)->call_trap()); 4773ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 4783ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 479e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch if (callee->IsJSFunction()) { 480e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch Handle<JSFunction> function = Handle<JSFunction>::cast(callee); 4813ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (!function->shared()->is_classic_mode() || function->IsBuiltin()) { 482e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Do not wrap receiver for strict mode functions or for builtins. 483e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch return; 484e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch } 485e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch } 486e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 487e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // And only wrap string, number or boolean. 488e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch if (object->IsString() || object->IsNumber() || object->IsBoolean()) { 489e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Change the receiver to the result of calling ToObject on it. 490e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch const int argc = this->target()->arguments_count(); 491e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch StackFrameLocator locator; 492e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch JavaScriptFrame* frame = locator.FindJavaScriptFrame(0); 493e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch int index = frame->ComputeExpressionsCount() - (argc + 1); 49444f0eee88ff00398ff7f715fab053374d808c90dSteve Block frame->SetExpression(index, *isolate()->factory()->ToObject(object)); 495e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch } 496e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke} 497e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke 498a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 4995913587db4c6bab03d97bfe44b06289fd6d7270dJohn ReckMaybeObject* CallICBase::LoadFunction(State state, 500b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Code::ExtraICState extra_ic_state, 5015913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck Handle<Object> object, 5025913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck Handle<String> name) { 503a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If the object is undefined or null it's illegal to try to get any 504a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // of its properties; throw a TypeError in that case. 505a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (object->IsUndefined() || object->IsNull()) { 506a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return TypeError("non_object_property_call", object, name); 507a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 508a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 509a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check if the name is trivially convertible to an index and get 510a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the element if so. 511a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block uint32_t index; 512a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (name->AsArrayIndex(&index)) { 5133ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Object> result = Object::GetElement(object, index); 5143ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch RETURN_IF_EMPTY_HANDLE(isolate(), result); 5153ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (result->IsJSFunction()) return *result; 516a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 517a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Try to find a suitable function delegate for the object at hand. 518a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block result = TryCallAsFunction(result); 5193ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (result->IsJSFunction()) return *result; 520a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 521a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Otherwise, it will fail in the lookup step. 522a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 523a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 524a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Lookup the property in the object. 5253ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch LookupResult lookup(isolate()); 5263ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch LookupForRead(object, name, &lookup); 527a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 528402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu if (!lookup.IsProperty()) { 529a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If the object does not have the requested property, check which 530a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // exception we need to throw. 5313ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return IsContextual(object) 5323ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ? ReferenceError("not_defined", name) 5333ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch : TypeError("undefined_method", object, name); 534a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 535a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 536a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Lookup is valid: Update inline cache and stub cache. 5373100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu if (FLAG_use_ic) { 538b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch UpdateCaches(&lookup, state, extra_ic_state, object, name); 539a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 540a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 541a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Get the property. 542a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block PropertyAttributes attr; 5433ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Object> result = 5443ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Object::GetProperty(object, object, &lookup, name, &attr); 5453ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch RETURN_IF_EMPTY_HANDLE(isolate(), result); 546e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 5473ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (lookup.type() == INTERCEPTOR && attr == ABSENT) { 548a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If the object does not have the requested property, check which 549a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // exception we need to throw. 5503ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return IsContextual(object) 5513ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ? ReferenceError("not_defined", name) 5523ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch : TypeError("undefined_method", object, name); 553a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 554a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 555e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch ASSERT(!result->IsTheHole()); 556a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 557e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Make receiver an object if the callee requires it. Strict mode or builtin 558e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // functions do not wrap the receiver, non-strict functions and objects 559e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // called as functions do. 5603ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ReceiverToObjectIfRequired(result, object); 561e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 5623ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (result->IsJSFunction()) { 5633ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<JSFunction> function = Handle<JSFunction>::cast(result); 564a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef ENABLE_DEBUGGER_SUPPORT 565a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Handle stepping into a function if step into is active. 56644f0eee88ff00398ff7f715fab053374d808c90dSteve Block Debug* debug = isolate()->debug(); 56744f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (debug->StepInActive()) { 568a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Protect the result in a handle as the debugger can allocate and might 569a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // cause GC. 57044f0eee88ff00398ff7f715fab053374d808c90dSteve Block debug->HandleStepIn(function, object, fp(), false); 571a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 572a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 5733ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return *function; 574a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 575a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 576a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Try to find a suitable function delegate for the object at hand. 5773ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch result = TryCallAsFunction(result); 5783ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (result->IsJSFunction()) return *result; 579e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 580e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch return TypeError("property_not_function", object, name); 581a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 582a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 583a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 584b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdochbool CallICBase::TryUpdateExtraICState(LookupResult* lookup, 585b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Handle<Object> object, 586b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Code::ExtraICState* extra_ic_state) { 587b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch ASSERT(kind_ == Code::CALL_IC); 588b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch if (lookup->type() != CONSTANT_FUNCTION) return false; 589b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch JSFunction* function = lookup->GetConstantFunction(); 590b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch if (!function->shared()->HasBuiltinFunctionId()) return false; 591b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 592b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // Fetch the arguments passed to the called function. 593b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch const int argc = target()->arguments_count(); 59444f0eee88ff00398ff7f715fab053374d808c90dSteve Block Address entry = isolate()->c_entry_fp(isolate()->thread_local_top()); 595b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Address fp = Memory::Address_at(entry + ExitFrameConstants::kCallerFPOffset); 596b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Arguments args(argc + 1, 597b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch &Memory::Object_at(fp + 598b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch StandardFrameConstants::kCallerSPOffset + 599b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch argc * kPointerSize)); 600b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch switch (function->shared()->builtin_function_id()) { 601b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch case kStringCharCodeAt: 602b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch case kStringCharAt: 603b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch if (object->IsString()) { 604b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch String* string = String::cast(*object); 605e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Check there's the right string value or wrapper in the receiver slot. 606e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch ASSERT(string == args[0] || string == JSValue::cast(args[0])->value()); 607b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // If we're in the default (fastest) state and the index is 608b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // out of bounds, update the state to record this fact. 609257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (StringStubState::decode(*extra_ic_state) == DEFAULT_STRING_STUB && 610b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch argc >= 1 && args[1]->IsNumber()) { 6113fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch double index = DoubleToInteger(args.number_at(1)); 612b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch if (index < 0 || index >= string->length()) { 613257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch *extra_ic_state = 614257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch StringStubState::update(*extra_ic_state, 615257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch STRING_INDEX_OUT_OF_BOUNDS); 616b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return true; 617b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 618b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 619b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 620b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch break; 621b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch default: 622b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return false; 623b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 624b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return false; 625b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch} 626b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 627b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 6283ef787dbeca8a5fb1086949cda830dccee07bfbdBen MurdochHandle<Code> CallICBase::ComputeMonomorphicStub(LookupResult* lookup, 6293ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch State state, 6303ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Code::ExtraICState extra_state, 6313ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Object> object, 6323ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<String> name) { 633b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch int argc = target()->arguments_count(); 6343ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<JSObject> holder(lookup->holder()); 635b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch switch (lookup->type()) { 636b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch case FIELD: { 637b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch int index = lookup->GetFieldIndex(); 6383ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return isolate()->stub_cache()->ComputeCallField( 6393ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch argc, kind_, extra_state, name, object, holder, index); 640b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 641b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch case CONSTANT_FUNCTION: { 642b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // Get the constant function and compute the code stub for this 643b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // call; used for rewriting to monomorphic state and making sure 644b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // that the code stub is in the stub cache. 6453ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<JSFunction> function(lookup->GetConstantFunction()); 6463ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return isolate()->stub_cache()->ComputeCallConstant( 6473ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch argc, kind_, extra_state, name, object, holder, function); 648b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 649b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch case NORMAL: { 6503ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // If we return a null handle, the IC will not be patched. 6513ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (!object->IsJSObject()) return Handle<Code>::null(); 652b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Handle<JSObject> receiver = Handle<JSObject>::cast(object); 653b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 6543ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (holder->IsGlobalObject()) { 6553ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<GlobalObject> global = Handle<GlobalObject>::cast(holder); 6563ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<JSGlobalPropertyCell> cell(global->GetPropertyCell(lookup)); 6573ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (!cell->value()->IsJSFunction()) return Handle<Code>::null(); 6583ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<JSFunction> function(JSFunction::cast(cell->value())); 6593ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return isolate()->stub_cache()->ComputeCallGlobal( 6603ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch argc, kind_, extra_state, name, receiver, global, cell, function); 661b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } else { 662b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // There is only one shared stub for calling normalized 663b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // properties. It does not traverse the prototype chain, so the 664b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // property must be found in the receiver for the stub to be 665b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // applicable. 6663ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (!holder.is_identical_to(receiver)) return Handle<Code>::null(); 6673ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return isolate()->stub_cache()->ComputeCallNormal( 6683ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch argc, kind_, extra_state); 669b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 670b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch break; 671b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 6723ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case INTERCEPTOR: 6733ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT(HasInterceptorGetter(*holder)); 6743ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return isolate()->stub_cache()->ComputeCallInterceptor( 6753ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch argc, kind_, extra_state, name, object, holder); 676b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch default: 6773ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return Handle<Code>::null(); 678b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 679b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch} 680b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 681b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 6827f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdochvoid CallICBase::UpdateCaches(LookupResult* lookup, 6838defd9ff6930b4e24729971a61cf7469daf119beSteve Block State state, 684b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Code::ExtraICState extra_ic_state, 6858defd9ff6930b4e24729971a61cf7469daf119beSteve Block Handle<Object> object, 6868defd9ff6930b4e24729971a61cf7469daf119beSteve Block Handle<String> name) { 687a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Bail out if we didn't find a result. 688402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu if (!lookup->IsProperty() || !lookup->IsCacheable()) return; 689a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 6908defd9ff6930b4e24729971a61cf7469daf119beSteve Block if (lookup->holder() != *object && 69144f0eee88ff00398ff7f715fab053374d808c90dSteve Block HasNormalObjectsInPrototypeChain( 69244f0eee88ff00398ff7f715fab053374d808c90dSteve Block isolate(), lookup, object->GetPrototype())) { 6938defd9ff6930b4e24729971a61cf7469daf119beSteve Block // Suppress optimization for prototype chains with slow properties objects 6948defd9ff6930b4e24729971a61cf7469daf119beSteve Block // in the middle. 6958defd9ff6930b4e24729971a61cf7469daf119beSteve Block return; 6968defd9ff6930b4e24729971a61cf7469daf119beSteve Block } 6978defd9ff6930b4e24729971a61cf7469daf119beSteve Block 698a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Compute the number of arguments. 699a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int argc = target()->arguments_count(); 700b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch bool had_proto_failure = false; 7013ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Code> code; 702a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (state == UNINITIALIZED) { 703a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // This is the first time we execute this inline cache. 704a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Set the target to the pre monomorphic stub to delay 705a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // setting the monomorphic state. 7063ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch code = isolate()->stub_cache()->ComputeCallPreMonomorphic( 7073ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch argc, kind_, extra_ic_state); 708a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else if (state == MONOMORPHIC) { 709b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch if (kind_ == Code::CALL_IC && 710b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch TryUpdateExtraICState(lookup, object, &extra_ic_state)) { 7113ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch code = ComputeMonomorphicStub(lookup, state, extra_ic_state, 7123ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch object, name); 713b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } else if (kind_ == Code::CALL_IC && 714b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch TryRemoveInvalidPrototypeDependentStub(target(), 715b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch *object, 716b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch *name)) { 717b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch had_proto_failure = true; 7183ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch code = ComputeMonomorphicStub(lookup, state, extra_ic_state, 7193ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch object, name); 720b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } else { 7213ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch code = isolate()->stub_cache()->ComputeCallMegamorphic( 7223ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch argc, kind_, extra_ic_state); 723a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 724b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } else { 7253ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch code = ComputeMonomorphicStub(lookup, state, extra_ic_state, 7263ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch object, name); 727a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 728a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 7293ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // If there's no appropriate stub we simply avoid updating the caches. 7303ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (code.is_null()) return; 731a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 732a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Patch the call site depending on the state of the cache. 733a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (state == UNINITIALIZED || 734a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block state == PREMONOMORPHIC || 735a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block state == MONOMORPHIC || 736a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block state == MONOMORPHIC_PROTOTYPE_FAILURE) { 7373ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch set_target(*code); 7389dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } else if (state == MEGAMORPHIC) { 7398defd9ff6930b4e24729971a61cf7469daf119beSteve Block // Cache code holding map should be consistent with 7408defd9ff6930b4e24729971a61cf7469daf119beSteve Block // GenerateMonomorphicCacheProbe. It is not the map which holds the stub. 7413ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<JSObject> cache_object = object->IsJSObject() 7423ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ? Handle<JSObject>::cast(object) 7433ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch : Handle<JSObject>(JSObject::cast(object->GetPrototype())); 7449dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen // Update the stub cache. 7453ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch isolate()->stub_cache()->Set(*name, cache_object->map(), *code); 746a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 747a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 748b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch if (had_proto_failure) state = MONOMORPHIC_PROTOTYPE_FAILURE; 7493ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch TRACE_IC(kind_ == Code::CALL_IC ? "CallIC" : "KeyedCallIC", 7503ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch name, state, target()); 751a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 752a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 753a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 7545913587db4c6bab03d97bfe44b06289fd6d7270dJohn ReckMaybeObject* KeyedCallIC::LoadFunction(State state, 7555913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck Handle<Object> object, 7565913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck Handle<Object> key) { 7577f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch if (key->IsSymbol()) { 758b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return CallICBase::LoadFunction(state, 759b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Code::kNoExtraICState, 760b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch object, 761b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Handle<String>::cast(key)); 7627f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch } 7637f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch 7647f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch if (object->IsUndefined() || object->IsNull()) { 7657f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch return TypeError("non_object_property_call", object, key); 7667f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch } 7677f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch 7683fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch if (FLAG_use_ic && state != MEGAMORPHIC && object->IsHeapObject()) { 7697f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch int argc = target()->arguments_count(); 7703ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Map> map = 7713ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch isolate()->factory()->non_strict_arguments_elements_map(); 7723fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch if (object->IsJSObject() && 7733ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<JSObject>::cast(object)->elements()->map() == *map) { 7743ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Code> code = isolate()->stub_cache()->ComputeCallArguments( 775589d6979ff2ef66fca2d8fa51404c369ca5e9250Ben Murdoch argc, Code::KEYED_CALL_IC); 7763ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch set_target(*code); 7773ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch TRACE_IC("KeyedCallIC", key, state, target()); 7783ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } else if (!object->IsAccessCheckNeeded()) { 7793ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Code> code = isolate()->stub_cache()->ComputeCallMegamorphic( 780589d6979ff2ef66fca2d8fa51404c369ca5e9250Ben Murdoch argc, Code::KEYED_CALL_IC, Code::kNoExtraICState); 7813ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch set_target(*code); 7823ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch TRACE_IC("KeyedCallIC", key, state, target()); 7837f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch } 7847f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch } 785e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 786e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch Handle<Object> result = GetProperty(object, key); 78744f0eee88ff00398ff7f715fab053374d808c90dSteve Block RETURN_IF_EMPTY_HANDLE(isolate(), result); 788e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 789e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Make receiver an object if the callee requires it. Strict mode or builtin 790e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // functions do not wrap the receiver, non-strict functions and objects 791e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // called as functions do. 792e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch ReceiverToObjectIfRequired(result, object); 79385b71799222b55eb5dd74ea26efe0c64ab655c8cBen Murdoch if (result->IsJSFunction()) return *result; 7943ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 7953ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch result = TryCallAsFunction(result); 796e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch if (result->IsJSFunction()) return *result; 797e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 798e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch return TypeError("property_not_function", object, key); 7997f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch} 8007f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch 8017f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch 8025913587db4c6bab03d97bfe44b06289fd6d7270dJohn ReckMaybeObject* LoadIC::Load(State state, 8035913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck Handle<Object> object, 8045913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck Handle<String> name) { 805a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If the object is undefined or null it's illegal to try to get any 806a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // of its properties; throw a TypeError in that case. 807a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (object->IsUndefined() || object->IsNull()) { 808a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return TypeError("non_object_property_load", object, name); 809a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 810a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 811a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (FLAG_use_ic) { 812a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Use specialized code for getting the length of strings and 813a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // string wrapper objects. The length property of string wrapper 814a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // objects is read-only and therefore always returns the length of 815a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the underlying string value. See ECMA-262 15.5.5.1. 816a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if ((object->IsString() || object->IsStringWrapper()) && 81744f0eee88ff00398ff7f715fab053374d808c90dSteve Block name->Equals(isolate()->heap()->length_symbol())) { 8183ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Code> stub; 8193fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch if (state == UNINITIALIZED) { 8203fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch stub = pre_monomorphic_stub(); 8213fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } else if (state == PREMONOMORPHIC) { 8223ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch stub = object->IsString() 8233ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ? isolate()->builtins()->LoadIC_StringLength() 8243ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch : isolate()->builtins()->LoadIC_StringWrapperLength(); 8251e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block } else if (state == MONOMORPHIC && object->IsStringWrapper()) { 8263ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch stub = isolate()->builtins()->LoadIC_StringWrapperLength(); 8273fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } else if (state != MEGAMORPHIC) { 8283fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch stub = megamorphic_stub(); 8293fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 8303ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (!stub.is_null()) { 8313ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch set_target(*stub); 8323fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#ifdef DEBUG 8333fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch if (FLAG_trace_ic) PrintF("[LoadIC : +#length /string]\n"); 8343fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#endif 8351e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block } 8361e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // Get the string if we have a string wrapper object. 8373ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Object> string = object->IsJSValue() 8383ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ? Handle<Object>(Handle<JSValue>::cast(object)->value()) 8393ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch : object; 8403ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return Smi::FromInt(String::cast(*string)->length()); 841a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 842a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 843a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Use specialized code for getting the length of arrays. 84444f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (object->IsJSArray() && 84544f0eee88ff00398ff7f715fab053374d808c90dSteve Block name->Equals(isolate()->heap()->length_symbol())) { 8463ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Code> stub; 8473fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch if (state == UNINITIALIZED) { 8483fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch stub = pre_monomorphic_stub(); 8493fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } else if (state == PREMONOMORPHIC) { 8503ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch stub = isolate()->builtins()->LoadIC_ArrayLength(); 8513fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } else if (state != MEGAMORPHIC) { 8523fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch stub = megamorphic_stub(); 8533fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 8543ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (!stub.is_null()) { 8553ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch set_target(*stub); 856a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 8573fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch if (FLAG_trace_ic) PrintF("[LoadIC : +#length /array]\n"); 858a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 8591e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block } 860a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return JSArray::cast(*object)->length(); 861a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 862a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 863a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Use specialized code for getting prototype of functions. 86444f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (object->IsJSFunction() && 86544f0eee88ff00398ff7f715fab053374d808c90dSteve Block name->Equals(isolate()->heap()->prototype_symbol()) && 8663ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<JSFunction>::cast(object)->should_have_prototype()) { 8673ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Code> stub; 8683ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (state == UNINITIALIZED) { 8693ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch stub = pre_monomorphic_stub(); 8703ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } else if (state == PREMONOMORPHIC) { 8713ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch stub = isolate()->builtins()->LoadIC_FunctionPrototype(); 8723ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } else if (state != MEGAMORPHIC) { 8733ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch stub = megamorphic_stub(); 8743ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 8753ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (!stub.is_null()) { 8763ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch set_target(*stub); 877a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 8783ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (FLAG_trace_ic) PrintF("[LoadIC : +#prototype /function]\n"); 879a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 8801e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block } 881a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return Accessors::FunctionGetPrototype(*object, 0); 882a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 883a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 884a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 885a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check if the name is trivially convertible to an index and get 886a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the element if so. 887a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block uint32_t index; 888a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (name->AsArrayIndex(&index)) return object->GetElement(index); 889a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 890a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Named lookup in the object. 8913ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch LookupResult lookup(isolate()); 8923ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch LookupForRead(object, name, &lookup); 893a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 894402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu // If we did not find a property, check if we need to throw an exception. 895402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu if (!lookup.IsProperty()) { 8963fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch if (IsContextual(object)) { 897a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return ReferenceError("not_defined", name); 898a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 89944f0eee88ff00398ff7f715fab053374d808c90dSteve Block LOG(isolate(), SuspectReadEvent(*name, *object)); 900a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 901a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 902a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Update inline cache and stub cache. 9033100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu if (FLAG_use_ic) { 904a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block UpdateCaches(&lookup, state, object, name); 905a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 906a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 907a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block PropertyAttributes attr; 9083ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (lookup.IsFound() && 909257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch (lookup.type() == INTERCEPTOR || lookup.type() == HANDLER)) { 910a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Get the property. 9113ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Object> result = 9123ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Object::GetProperty(object, object, &lookup, name, &attr); 9133ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch RETURN_IF_EMPTY_HANDLE(isolate(), result); 914a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If the property is not present, check if we need to throw an 915a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // exception. 916e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke if (attr == ABSENT && IsContextual(object)) { 917a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return ReferenceError("not_defined", name); 918a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 9193ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return *result; 920a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 921a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 922a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Get the property. 923a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return object->GetProperty(*object, &lookup, *name, &attr); 924a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 925a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 926a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 927a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid LoadIC::UpdateCaches(LookupResult* lookup, 928a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block State state, 929a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Handle<Object> object, 930a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Handle<String> name) { 9316ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Bail out if the result is not cacheable. 9326ded16be15dd865a9b21ea304d5273c8be299c87Steve Block if (!lookup->IsCacheable()) return; 933a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 934a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Loading properties from values is not common, so don't try to 935a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // deal with non-JS objects here. 936a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (!object->IsJSObject()) return; 937a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Handle<JSObject> receiver = Handle<JSObject>::cast(object); 938a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 93944f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (HasNormalObjectsInPrototypeChain(isolate(), lookup, *object)) return; 9408defd9ff6930b4e24729971a61cf7469daf119beSteve Block 941a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Compute the code stub for this load. 9423ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Code> code; 943a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (state == UNINITIALIZED) { 944a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // This is the first time we execute this inline cache. 945a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Set the target to the pre monomorphic stub to delay 946a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // setting the monomorphic state. 9473ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch code = pre_monomorphic_stub(); 9486ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } else if (!lookup->IsProperty()) { 9496ded16be15dd865a9b21ea304d5273c8be299c87Steve Block // Nonexistent property. The result is undefined. 9503ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch code = isolate()->stub_cache()->ComputeLoadNonexistent(name, receiver); 951a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 952a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Compute monomorphic stub. 9533ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<JSObject> holder(lookup->holder()); 954a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block switch (lookup->type()) { 9553ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case FIELD: 9563ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch code = isolate()->stub_cache()->ComputeLoadField( 9573ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch name, receiver, holder, lookup->GetFieldIndex()); 958a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block break; 959a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case CONSTANT_FUNCTION: { 9603ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<JSFunction> constant(lookup->GetConstantFunction()); 9613ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch code = isolate()->stub_cache()->ComputeLoadConstant( 9623ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch name, receiver, holder, constant); 963a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block break; 964a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 9653ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case NORMAL: 9663ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (holder->IsGlobalObject()) { 9673ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<GlobalObject> global = Handle<GlobalObject>::cast(holder); 9683ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<JSGlobalPropertyCell> cell(global->GetPropertyCell(lookup)); 9693ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch code = isolate()->stub_cache()->ComputeLoadGlobal( 9703ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch name, receiver, global, cell, lookup->IsDontDelete()); 971a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 972a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // There is only one shared stub for loading normalized 973a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // properties. It does not traverse the prototype chain, so the 974a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // property must be found in the receiver for the stub to be 975a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // applicable. 9763ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (!holder.is_identical_to(receiver)) return; 9773ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch code = isolate()->stub_cache()->ComputeLoadNormal(); 978a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 979a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block break; 980a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case CALLBACKS: { 9813ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Object> callback_object(lookup->GetCallbackObject()); 9823ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (!callback_object->IsAccessorInfo()) return; 9833ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<AccessorInfo> callback = 9843ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<AccessorInfo>::cast(callback_object); 985a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (v8::ToCData<Address>(callback->getter()) == 0) return; 9863ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch code = isolate()->stub_cache()->ComputeLoadCallback( 9873ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch name, receiver, holder, callback); 988a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block break; 989a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 9903ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case INTERCEPTOR: 9913ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT(HasInterceptorGetter(*holder)); 9923ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch code = isolate()->stub_cache()->ComputeLoadInterceptor( 9933ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch name, receiver, holder); 994a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block break; 995a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block default: 996a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return; 997a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 998a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 999a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1000a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Patch the call site depending on the state of the cache. 10013ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (state == UNINITIALIZED || 10023ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch state == PREMONOMORPHIC || 1003a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block state == MONOMORPHIC_PROTOTYPE_FAILURE) { 10043ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch set_target(*code); 1005a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else if (state == MONOMORPHIC) { 10063ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // We are transitioning from monomorphic to megamorphic case. 10073ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Place the current monomorphic stub and stub compiled for 10083ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // the receiver into stub cache. 10093ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Map* map = target()->FindFirstMap(); 10103ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (map != NULL) { 10113ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch isolate()->stub_cache()->Set(*name, map, target()); 10123ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 10133ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch isolate()->stub_cache()->Set(*name, receiver->map(), *code); 10143ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 10153ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch set_target(*megamorphic_stub()); 10169dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } else if (state == MEGAMORPHIC) { 10178defd9ff6930b4e24729971a61cf7469daf119beSteve Block // Cache code holding map should be consistent with 10188defd9ff6930b4e24729971a61cf7469daf119beSteve Block // GenerateMonomorphicCacheProbe. 10193ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch isolate()->stub_cache()->Set(*name, receiver->map(), *code); 1020a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1021a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 10223ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch TRACE_IC("LoadIC", name, state, target()); 1023a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1024a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1025a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 10263ef787dbeca8a5fb1086949cda830dccee07bfbdBen MurdochHandle<Code> KeyedLoadIC::GetElementStubWithoutMapCheck( 10273fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch bool is_js_array, 10283ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ElementsKind elements_kind, 10293ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch KeyedAccessGrowMode grow_mode) { 10303ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT(grow_mode == DO_NOT_ALLOW_JSARRAY_GROWTH); 10313ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return KeyedLoadElementStub(elements_kind).GetCode(); 10323ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch} 10333ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 10343ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 10353ef787dbeca8a5fb1086949cda830dccee07bfbdBen MurdochHandle<Code> KeyedLoadIC::ComputePolymorphicStub( 10363ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch MapHandleList* receiver_maps, 10373ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch StrictModeFlag strict_mode, 10383ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch KeyedAccessGrowMode growth_mode) { 10393ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch CodeHandleList handler_ics(receiver_maps->length()); 10403ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch for (int i = 0; i < receiver_maps->length(); ++i) { 10413ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Map> receiver_map = receiver_maps->at(i); 10423ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Code> cached_stub = ComputeMonomorphicStubWithoutMapCheck( 10433ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch receiver_map, strict_mode, growth_mode); 10443ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch handler_ics.Add(cached_stub); 10453ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 10463ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch KeyedLoadStubCompiler compiler(isolate()); 10473ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Code> code = compiler.CompileLoadPolymorphic( 10483ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch receiver_maps, &handler_ics); 1049257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch isolate()->counters()->keyed_load_polymorphic_stubs()->Increment(); 10503ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch PROFILE(isolate(), 10513ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch CodeCreateEvent(Logger::KEYED_LOAD_MEGAMORPHIC_IC_TAG, *code, 0)); 10523ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return code; 1053257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch} 1054257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 1055257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 10565913587db4c6bab03d97bfe44b06289fd6d7270dJohn ReckMaybeObject* KeyedLoadIC::Load(State state, 10575913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck Handle<Object> object, 1058257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Handle<Object> key, 1059257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch bool force_generic_stub) { 10608b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch // Check for values that can be converted into a symbol. 10618b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch // TODO(1295): Remove this code. 10628b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch if (key->IsHeapNumber() && 10633ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch isnan(Handle<HeapNumber>::cast(key)->value())) { 10648b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch key = isolate()->factory()->nan_symbol(); 10658b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch } else if (key->IsUndefined()) { 10668b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch key = isolate()->factory()->undefined_symbol(); 10678b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch } 10688b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch 1069a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (key->IsSymbol()) { 1070a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Handle<String> name = Handle<String>::cast(key); 1071a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1072a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If the object is undefined or null it's illegal to try to get any 1073a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // of its properties; throw a TypeError in that case. 1074a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (object->IsUndefined() || object->IsNull()) { 1075a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return TypeError("non_object_property_load", object, name); 1076a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1077a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1078a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (FLAG_use_ic) { 10791e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // TODO(1073): don't ignore the current stub state. 10801e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 1081a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Use specialized code for getting the length of strings. 108244f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (object->IsString() && 108344f0eee88ff00398ff7f715fab053374d808c90dSteve Block name->Equals(isolate()->heap()->length_symbol())) { 1084a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Handle<String> string = Handle<String>::cast(object); 10853ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Code> code = 10863ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch isolate()->stub_cache()->ComputeKeyedLoadStringLength(name, string); 10873ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT(!code.is_null()); 10883ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch set_target(*code); 10893ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch TRACE_IC("KeyedLoadIC", name, state, target()); 1090a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return Smi::FromInt(string->length()); 1091a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1092a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1093a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Use specialized code for getting the length of arrays. 109444f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (object->IsJSArray() && 109544f0eee88ff00398ff7f715fab053374d808c90dSteve Block name->Equals(isolate()->heap()->length_symbol())) { 1096a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Handle<JSArray> array = Handle<JSArray>::cast(object); 10973ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Code> code = 10983ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch isolate()->stub_cache()->ComputeKeyedLoadArrayLength(name, array); 10993ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT(!code.is_null()); 11003ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch set_target(*code); 11013ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch TRACE_IC("KeyedLoadIC", name, state, target()); 11023ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return array->length(); 1103a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1104a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1105a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Use specialized code for getting prototype of functions. 110644f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (object->IsJSFunction() && 110744f0eee88ff00398ff7f715fab053374d808c90dSteve Block name->Equals(isolate()->heap()->prototype_symbol()) && 11083ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<JSFunction>::cast(object)->should_have_prototype()) { 1109a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Handle<JSFunction> function = Handle<JSFunction>::cast(object); 11103ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Code> code = 11113ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch isolate()->stub_cache()->ComputeKeyedLoadFunctionPrototype( 11123ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch name, function); 11133ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT(!code.is_null()); 11143ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch set_target(*code); 11153ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch TRACE_IC("KeyedLoadIC", name, state, target()); 1116a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return Accessors::FunctionGetPrototype(*object, 0); 1117a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1118a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1119a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1120a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check if the name is trivially convertible to an index and get 1121a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the element or char if so. 1122a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block uint32_t index = 0; 1123a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (name->AsArrayIndex(&index)) { 1124a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Rewrite to the generic keyed load stub. 11253ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (FLAG_use_ic) set_target(*generic_stub()); 112644f0eee88ff00398ff7f715fab053374d808c90dSteve Block return Runtime::GetElementOrCharAt(isolate(), object, index); 1127a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1128a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1129a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Named lookup. 11303ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch LookupResult lookup(isolate()); 11313ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch LookupForRead(object, name, &lookup); 1132a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1133402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu // If we did not find a property, check if we need to throw an exception. 11343fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch if (!lookup.IsProperty() && IsContextual(object)) { 11353fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch return ReferenceError("not_defined", name); 1136a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1137a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 11383100271588b61cbc1dc472a3f2f105d2eed8497fAndrei Popescu if (FLAG_use_ic) { 1139a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block UpdateCaches(&lookup, state, object, name); 1140a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1141a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1142a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block PropertyAttributes attr; 11433ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (lookup.IsFound() && lookup.type() == INTERCEPTOR) { 1144a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Get the property. 11453ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Object> result = 11463ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Object::GetProperty(object, object, &lookup, name, &attr); 11473ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch RETURN_IF_EMPTY_HANDLE(isolate(), result); 1148a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If the property is not present, check if we need to throw an 1149a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // exception. 1150e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke if (attr == ABSENT && IsContextual(object)) { 1151a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return ReferenceError("not_defined", name); 1152a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 11533ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return *result; 1154a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1155a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1156a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return object->GetProperty(*object, &lookup, *name, &attr); 1157a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1158a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1159a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Do not use ICs for objects that require access checks (including 1160a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the global object). 1161a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bool use_ic = FLAG_use_ic && !object->IsAccessCheckNeeded(); 1162a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1163a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (use_ic) { 11643ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Code> stub = generic_stub(); 1165257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (!force_generic_stub) { 11661e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block if (object->IsString() && key->IsNumber()) { 1167257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (state == UNINITIALIZED) { 1168257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch stub = string_stub(); 1169257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 11701e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block } else if (object->IsJSObject()) { 11713ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<JSObject> receiver = Handle<JSObject>::cast(object); 11723ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (receiver->elements()->map() == 11733ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch isolate()->heap()->non_strict_arguments_elements_map()) { 11743fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch stub = non_strict_arguments_stub(); 11753fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } else if (receiver->HasIndexedInterceptor()) { 11761e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block stub = indexed_interceptor_stub(); 11773ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } else if (key->IsSmi() && (target() != *non_strict_arguments_stub())) { 11783ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch stub = ComputeStub(receiver, LOAD, kNonStrictMode, stub); 11791e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block } 11803ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block } 11813ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } else { 11823ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch TRACE_GENERIC_IC("KeyedLoadIC", "force generic"); 11833ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block } 11843ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (!stub.is_null()) set_target(*stub); 1185257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 1186b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 11873ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch TRACE_IC("KeyedLoadIC", key, state, target()); 1188053d10c438f14580aaf4ab1b2aad93a5a4fe8b82Steve Block 1189a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Get the property. 119044f0eee88ff00398ff7f715fab053374d808c90dSteve Block return Runtime::GetObjectProperty(isolate(), object, key); 1191a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1192a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1193a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 11943ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdochvoid KeyedLoadIC::UpdateCaches(LookupResult* lookup, 11953ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch State state, 11963ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Object> object, 11973ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<String> name) { 1198a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Bail out if we didn't find a result. 1199402d937239b0e2fd11bf2f4fe972ad78aa9fd481Andrei Popescu if (!lookup->IsProperty() || !lookup->IsCacheable()) return; 1200a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1201a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (!object->IsJSObject()) return; 1202a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Handle<JSObject> receiver = Handle<JSObject>::cast(object); 1203a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 120444f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (HasNormalObjectsInPrototypeChain(isolate(), lookup, *object)) return; 12058defd9ff6930b4e24729971a61cf7469daf119beSteve Block 1206a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Compute the code stub for this load. 12073ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Code> code; 1208a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1209a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (state == UNINITIALIZED) { 1210a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // This is the first time we execute this inline cache. 1211a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Set the target to the pre monomorphic stub to delay 1212a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // setting the monomorphic state. 12133ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch code = pre_monomorphic_stub(); 1214a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else { 1215a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Compute a monomorphic stub. 12163ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<JSObject> holder(lookup->holder()); 1217a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block switch (lookup->type()) { 12183ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case FIELD: 12193ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch code = isolate()->stub_cache()->ComputeKeyedLoadField( 12203ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch name, receiver, holder, lookup->GetFieldIndex()); 1221a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block break; 1222a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case CONSTANT_FUNCTION: { 12233ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<JSFunction> constant(lookup->GetConstantFunction()); 12243ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch code = isolate()->stub_cache()->ComputeKeyedLoadConstant( 12253ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch name, receiver, holder, constant); 1226a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block break; 1227a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1228a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case CALLBACKS: { 12293ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Object> callback_object(lookup->GetCallbackObject()); 12303ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (!callback_object->IsAccessorInfo()) return; 12313ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<AccessorInfo> callback = 12323ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<AccessorInfo>::cast(callback_object); 1233a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (v8::ToCData<Address>(callback->getter()) == 0) return; 12343ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch code = isolate()->stub_cache()->ComputeKeyedLoadCallback( 12353ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch name, receiver, holder, callback); 1236a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block break; 1237a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 12383ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case INTERCEPTOR: 1239a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(HasInterceptorGetter(lookup->holder())); 12403ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch code = isolate()->stub_cache()->ComputeKeyedLoadInterceptor( 12413ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch name, receiver, holder); 1242a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block break; 12433ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch default: 1244a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Always rewrite to the generic case so that we do not 1245a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // repeatedly try to rewrite. 12463ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch code = generic_stub(); 1247a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block break; 1248a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1249a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1250a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1251a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Patch the call site depending on the state of the cache. Make 1252a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // sure to always rewrite from monomorphic to megamorphic. 1253a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(state != MONOMORPHIC_PROTOTYPE_FAILURE); 1254a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (state == UNINITIALIZED || state == PREMONOMORPHIC) { 12553ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch set_target(*code); 1256a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else if (state == MONOMORPHIC) { 12573ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch set_target(*megamorphic_stub()); 1258a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1259a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 12603ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch TRACE_IC("KeyedLoadIC", name, state, target()); 1261a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1262a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1263a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1264a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockstatic bool StoreICableLookup(LookupResult* lookup) { 1265a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Bail out if we didn't find a result. 12663ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (!lookup->IsFound() || lookup->type() == NULL_DESCRIPTOR) return false; 1267c7cc028aaeedbbfa11c11d0b7b243b3d9e837ed9Ben Murdoch 12683ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Bail out if inline caching is not allowed. 12693ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (!lookup->IsCacheable()) return false; 12703ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 12713ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // If the property is read-only, we leave the IC in its current state. 1272a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (lookup->IsReadOnly()) return false; 1273a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1274a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return true; 1275a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1276a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1277a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 12783ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdochstatic bool LookupForWrite(Handle<JSObject> receiver, 12793ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<String> name, 1280a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block LookupResult* lookup) { 12813ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch receiver->LocalLookup(*name, lookup); 1282a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (!StoreICableLookup(lookup)) { 1283a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return false; 1284a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1285a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 12863ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (lookup->type() == INTERCEPTOR && 12873ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch receiver->GetNamedInterceptor()->setter()->IsUndefined()) { 12883ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch receiver->LocalLookupRealNamedProperty(*name, lookup); 12893ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return StoreICableLookup(lookup); 1290a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1291a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1292a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return true; 1293a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1294a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1295a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 12965913587db4c6bab03d97bfe44b06289fd6d7270dJohn ReckMaybeObject* StoreIC::Store(State state, 1297e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch StrictModeFlag strict_mode, 12985913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck Handle<Object> object, 12995913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck Handle<String> name, 13005913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck Handle<Object> value) { 13013ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (!object->IsJSObject()) { 13023ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Handle proxies. 13033ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (object->IsJSProxy()) { 13043ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return JSProxy::cast(*object)-> 13053ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch SetProperty(*name, *value, NONE, strict_mode); 13063ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 13073ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 13083ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // If the object is undefined or null it's illegal to try to set any 13093ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // properties on it; throw a TypeError in that case. 13103ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (object->IsUndefined() || object->IsNull()) { 13113ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return TypeError("non_object_property_store", object, name); 13123ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 1313a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1314e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // The length property of string values is read-only. Throw in strict mode. 1315e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch if (strict_mode == kStrictMode && object->IsString() && 131644f0eee88ff00398ff7f715fab053374d808c90dSteve Block name->Equals(isolate()->heap()->length_symbol())) { 1317e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch return TypeError("strict_read_only_property", object, name); 1318e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch } 13193ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Ignore other stores where the receiver is not a JSObject. 13203ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // TODO(1475): Must check prototype chains of object wrappers. 1321e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch return *value; 1322e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch } 1323e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 1324a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Handle<JSObject> receiver = Handle<JSObject>::cast(object); 1325a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1326a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check if the given name is an array index. 1327a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block uint32_t index; 1328a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (name->AsArrayIndex(&index)) { 13293ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Object> result = 13303ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch JSObject::SetElement(receiver, index, value, NONE, strict_mode); 13313ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch RETURN_IF_EMPTY_HANDLE(isolate(), result); 1332a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return *value; 1333a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1334a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 13353ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Use specialized code for setting the length of arrays with fast 13363ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // properties. Slow properties might indicate redefinition of the 13373ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // length property. 13383ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (receiver->IsJSArray() && 13393ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch name->Equals(isolate()->heap()->length_symbol()) && 13403ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<JSArray>::cast(receiver)->AllowsSetElementsLength() && 13413ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch receiver->HasFastProperties()) { 13426ded16be15dd865a9b21ea304d5273c8be299c87Steve Block#ifdef DEBUG 13436ded16be15dd865a9b21ea304d5273c8be299c87Steve Block if (FLAG_trace_ic) PrintF("[StoreIC : +#length /array]\n"); 13446ded16be15dd865a9b21ea304d5273c8be299c87Steve Block#endif 13453ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Code> stub = (strict_mode == kStrictMode) 13463ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ? isolate()->builtins()->StoreIC_ArrayLength_Strict() 13473ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch : isolate()->builtins()->StoreIC_ArrayLength(); 13483ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch set_target(*stub); 1349e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch return receiver->SetProperty(*name, *value, NONE, strict_mode); 13506ded16be15dd865a9b21ea304d5273c8be299c87Steve Block } 13516ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 1352a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Lookup the property locally in the receiver. 1353a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (FLAG_use_ic && !receiver->IsJSGlobalProxy()) { 13543ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch LookupResult lookup(isolate()); 135550ef84f5fad2def87d3fbc737bec4a32711fdef4Kristian Monsen 13563ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (LookupForWrite(receiver, name, &lookup)) { 1357257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch // Generate a stub for this store. 1358e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch UpdateCaches(&lookup, state, strict_mode, receiver, name, value); 13591e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block } else { 1360e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Strict mode doesn't allow setting non-existent global property 1361e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // or an assignment to a read only property. 1362e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch if (strict_mode == kStrictMode) { 13633ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (lookup.IsProperty() && lookup.IsReadOnly()) { 1364e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch return TypeError("strict_read_only_property", object, name); 1365e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch } else if (IsContextual(object)) { 1366e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch return ReferenceError("not_defined", name); 1367e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch } 13681e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block } 1369a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1370a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1371a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1372b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (receiver->IsJSGlobalProxy()) { 13733ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // TODO(ulan): find out why we patch this site even with --no-use-ic 1374b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Generate a generic stub that goes to the runtime when we see a global 1375b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // proxy as receiver. 13763ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Code> stub = (strict_mode == kStrictMode) 13771e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ? global_proxy_stub_strict() 13781e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block : global_proxy_stub(); 13793ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (target() != *stub) { 13803ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch set_target(*stub); 13813ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch TRACE_IC("StoreIC", name, state, target()); 1382b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 1383b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 1384b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 1385a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Set the property. 1386e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch return receiver->SetProperty(*name, *value, NONE, strict_mode); 1387a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1388a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1389a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1390a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid StoreIC::UpdateCaches(LookupResult* lookup, 1391a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block State state, 1392e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch StrictModeFlag strict_mode, 1393a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Handle<JSObject> receiver, 1394a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Handle<String> name, 1395a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Handle<Object> value) { 1396a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!receiver->IsJSGlobalProxy()); 1397a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(StoreICableLookup(lookup)); 13983ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // These are not cacheable, so we never see such LookupResults here. 13993ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT(lookup->type() != HANDLER); 14003ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // We get only called for properties or transitions, see StoreICableLookup. 14013ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT(lookup->type() != NULL_DESCRIPTOR); 1402a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1403a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If the property has a non-field type allowing map transitions 1404a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // where there is extra room in the object, we leave the IC in its 1405a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // current state. 1406a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block PropertyType type = lookup->type(); 1407a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1408a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Compute the code stub for this store; used for rewriting to 1409a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // monomorphic state and making sure that the code stub is in the 1410a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // stub cache. 14113ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Code> code; 1412a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block switch (type) { 14133ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case FIELD: 14143ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch code = isolate()->stub_cache()->ComputeStoreField(name, 14153ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch receiver, 14163ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch lookup->GetFieldIndex(), 14173ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Map>::null(), 14183ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch strict_mode); 1419a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block break; 1420a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case MAP_TRANSITION: { 1421a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (lookup->GetAttributes() != NONE) return; 1422a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Handle<Map> transition(lookup->GetTransitionMap()); 1423a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int index = transition->PropertyIndexFor(*name); 14243ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch code = isolate()->stub_cache()->ComputeStoreField( 14253ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch name, receiver, index, transition, strict_mode); 1426a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block break; 1427a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 14283ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case NORMAL: 14298defd9ff6930b4e24729971a61cf7469daf119beSteve Block if (receiver->IsGlobalObject()) { 14308defd9ff6930b4e24729971a61cf7469daf119beSteve Block // The stub generated for the global object picks the value directly 14318defd9ff6930b4e24729971a61cf7469daf119beSteve Block // from the property cell. So the property must be directly on the 14328defd9ff6930b4e24729971a61cf7469daf119beSteve Block // global object. 14338defd9ff6930b4e24729971a61cf7469daf119beSteve Block Handle<GlobalObject> global = Handle<GlobalObject>::cast(receiver); 14343ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<JSGlobalPropertyCell> cell(global->GetPropertyCell(lookup)); 14353ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch code = isolate()->stub_cache()->ComputeStoreGlobal( 14363ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch name, global, cell, strict_mode); 14378defd9ff6930b4e24729971a61cf7469daf119beSteve Block } else { 14388defd9ff6930b4e24729971a61cf7469daf119beSteve Block if (lookup->holder() != *receiver) return; 14393ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch code = isolate()->stub_cache()->ComputeStoreNormal(strict_mode); 1440a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1441a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block break; 1442a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block case CALLBACKS: { 14433ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Object> callback_object(lookup->GetCallbackObject()); 14443ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (!callback_object->IsAccessorInfo()) return; 14453ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<AccessorInfo> callback = 14463ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<AccessorInfo>::cast(callback_object); 1447a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (v8::ToCData<Address>(callback->setter()) == 0) return; 14483ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch code = isolate()->stub_cache()->ComputeStoreCallback( 14493ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch name, receiver, callback, strict_mode); 1450a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block break; 1451a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 14523ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case INTERCEPTOR: 1453a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!receiver->GetNamedInterceptor()->setter()->IsUndefined()); 14543ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch code = isolate()->stub_cache()->ComputeStoreInterceptor( 14553ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch name, receiver, strict_mode); 1456a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block break; 14573ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case CONSTANT_FUNCTION: 14583ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case CONSTANT_TRANSITION: 14593ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case ELEMENTS_TRANSITION: 14603ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return; 14613ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case HANDLER: 14623ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case NULL_DESCRIPTOR: 14633ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch UNREACHABLE(); 1464a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return; 1465a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1466a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1467a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Patch the call site depending on the state of the cache. 1468a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (state == UNINITIALIZED || state == MONOMORPHIC_PROTOTYPE_FAILURE) { 14693ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch set_target(*code); 1470a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else if (state == MONOMORPHIC) { 14719dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen // Only move to megamorphic if the target changes. 14723ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (target() != *code) { 1473e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch set_target((strict_mode == kStrictMode) 14741e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ? megamorphic_stub_strict() 14751e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block : megamorphic_stub()); 14761e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block } 14779dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen } else if (state == MEGAMORPHIC) { 14789dcf7e2f83591d471e88bf7d230651900b8e424bKristian Monsen // Update the stub cache. 14793ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch isolate()->stub_cache()->Set(*name, receiver->map(), *code); 1480a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1481a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 14823ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch TRACE_IC("StoreIC", name, state, target()); 1483a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1484a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1485a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 14863ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdochstatic bool AddOneReceiverMapIfMissing(MapHandleList* receiver_maps, 14873ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Map> new_receiver_map) { 14883ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT(!new_receiver_map.is_null()); 1489257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch for (int current = 0; current < receiver_maps->length(); ++current) { 14903ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (!receiver_maps->at(current).is_null() && 14913ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch receiver_maps->at(current).is_identical_to(new_receiver_map)) { 1492257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch return false; 1493257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 1494257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 1495257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch receiver_maps->Add(new_receiver_map); 1496257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch return true; 1497257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch} 1498257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 1499257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 15003ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdochvoid KeyedIC::GetReceiverMapsForStub(Handle<Code> stub, 15013ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch MapHandleList* result) { 1502257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch ASSERT(stub->is_inline_cache_stub()); 15033ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (!string_stub().is_null() && stub.is_identical_to(string_stub())) { 15043ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return result->Add(isolate()->factory()->string_map()); 1505257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } else if (stub->is_keyed_load_stub() || stub->is_keyed_store_stub()) { 1506257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (stub->ic_state() == MONOMORPHIC) { 15073ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch result->Add(Handle<Map>(stub->FindFirstMap())); 1508257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } else { 1509257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch ASSERT(stub->ic_state() == MEGAMORPHIC); 1510257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch AssertNoAllocation no_allocation; 1511257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch int mask = RelocInfo::ModeMask(RelocInfo::EMBEDDED_OBJECT); 15123ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch for (RelocIterator it(*stub, mask); !it.done(); it.next()) { 1513257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch RelocInfo* info = it.rinfo(); 15143ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Object> object(info->target_object()); 1515257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch ASSERT(object->IsMap()); 15163ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch AddOneReceiverMapIfMissing(result, Handle<Map>::cast(object)); 1517257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 1518257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 1519257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 1520257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch} 1521257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 1522257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 15233ef787dbeca8a5fb1086949cda830dccee07bfbdBen MurdochHandle<Code> KeyedIC::ComputeStub(Handle<JSObject> receiver, 15243ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch StubKind stub_kind, 1525257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch StrictModeFlag strict_mode, 15263ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Code> generic_stub) { 1527257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch State ic_state = target()->ic_state(); 15283ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch KeyedAccessGrowMode grow_mode = IsGrowStubKind(stub_kind) 15293ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ? ALLOW_JSARRAY_GROWTH 15303ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch : DO_NOT_ALLOW_JSARRAY_GROWTH; 1531257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 1532257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch // Don't handle megamorphic property accesses for INTERCEPTORS or CALLBACKS 1533257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch // via megamorphic stubs, since they don't have a map in their relocation info 1534257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch // and so the stubs can't be harvested for the object needed for a map check. 1535257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (target()->type() != NORMAL) { 15363ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch TRACE_GENERIC_IC("KeyedIC", "non-NORMAL target type"); 1537257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch return generic_stub; 1538257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 1539257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 15403ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch bool monomorphic = false; 15413ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch MapHandleList target_receiver_maps; 15423ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (ic_state != UNINITIALIZED && ic_state != PREMONOMORPHIC) { 15433ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch GetReceiverMapsForStub(Handle<Code>(target()), &target_receiver_maps); 15443ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 15453ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (!IsTransitionStubKind(stub_kind)) { 15463ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (ic_state == UNINITIALIZED || ic_state == PREMONOMORPHIC) { 15473ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch monomorphic = true; 15483ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } else { 15493ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (ic_state == MONOMORPHIC) { 15503ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // The first time a receiver is seen that is a transitioned version of 15513ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // the previous monomorphic receiver type, assume the new ElementsKind 15523ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // is the monomorphic type. This benefits global arrays that only 15533ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // transition once, and all call sites accessing them are faster if they 15543ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // remain monomorphic. If this optimistic assumption is not true, the IC 15553ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // will miss again and it will become polymorphic and support both the 15563ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // untransitioned and transitioned maps. 15573ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch monomorphic = IsMoreGeneralElementsKindTransition( 15583ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch target_receiver_maps.at(0)->elements_kind(), 15593ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch receiver->GetElementsKind()); 15603ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 15613ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 15623ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 15633ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 15643ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (monomorphic) { 15653ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return ComputeMonomorphicStub( 15663ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch receiver, stub_kind, strict_mode, generic_stub); 15673ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 15683ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT(target() != *generic_stub); 15693ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 15705d4cdbf7a67d3662fa0bee4efdb7edd8daec9b0bBen Murdoch // Determine the list of receiver maps that this call site has seen, 15715d4cdbf7a67d3662fa0bee4efdb7edd8daec9b0bBen Murdoch // adding the map that was just encountered. 15723ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Map> receiver_map(receiver->map()); 15733ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch bool map_added = 15743ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch AddOneReceiverMapIfMissing(&target_receiver_maps, receiver_map); 15753ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (IsTransitionStubKind(stub_kind)) { 15763ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Map> new_map = ComputeTransitionedMap(receiver, stub_kind); 15773ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch map_added |= AddOneReceiverMapIfMissing(&target_receiver_maps, new_map); 15783ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 15793ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (!map_added) { 15803ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // If the miss wasn't due to an unseen map, a polymorphic stub 1581257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch // won't help, use the generic stub. 15823ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch TRACE_GENERIC_IC("KeyedIC", "same map added twice"); 1583257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch return generic_stub; 1584257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 1585257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 15863fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch // If the maximum number of receiver maps has been exceeded, use the generic 1587257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch // version of the IC. 15883fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch if (target_receiver_maps.length() > kMaxKeyedPolymorphism) { 15893ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch TRACE_GENERIC_IC("KeyedIC", "max polymorph exceeded"); 1590257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch return generic_stub; 1591257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 1592257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 15933ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if ((Code::GetKeyedAccessGrowMode(target()->extra_ic_state()) == 15943ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ALLOW_JSARRAY_GROWTH)) { 15953ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch grow_mode = ALLOW_JSARRAY_GROWTH; 15965d4cdbf7a67d3662fa0bee4efdb7edd8daec9b0bBen Murdoch } 15973ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 15983ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<PolymorphicCodeCache> cache = 15993ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch isolate()->factory()->polymorphic_code_cache(); 16003ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Code::ExtraICState extra_state = Code::ComputeExtraICState(grow_mode, 16013ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch strict_mode); 16023ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Code::Flags flags = Code::ComputeFlags(kind(), MEGAMORPHIC, extra_state); 16033ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Object> probe = cache->Lookup(&target_receiver_maps, flags); 16043ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (probe->IsCode()) return Handle<Code>::cast(probe); 16053ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 16063ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Code> stub = 16073ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ComputePolymorphicStub(&target_receiver_maps, strict_mode, grow_mode); 16083ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch PolymorphicCodeCache::Update(cache, &target_receiver_maps, flags, stub); 1609257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch return stub; 1610257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch} 1611257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 1612257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 16133ef787dbeca8a5fb1086949cda830dccee07bfbdBen MurdochHandle<Code> KeyedIC::ComputeMonomorphicStubWithoutMapCheck( 16143ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Map> receiver_map, 16153ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch StrictModeFlag strict_mode, 16163ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch KeyedAccessGrowMode grow_mode) { 1617257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if ((receiver_map->instance_type() & kNotStringTag) == 0) { 16183ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT(!string_stub().is_null()); 1619257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch return string_stub(); 1620257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } else { 16213fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch ASSERT(receiver_map->has_dictionary_elements() || 16223fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch receiver_map->has_fast_elements() || 16233ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch receiver_map->has_fast_smi_only_elements() || 16243fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch receiver_map->has_fast_double_elements() || 16253fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch receiver_map->has_external_array_elements()); 16263fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch bool is_js_array = receiver_map->instance_type() == JS_ARRAY_TYPE; 16273fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch return GetElementStubWithoutMapCheck(is_js_array, 16283ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch receiver_map->elements_kind(), 16293ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch grow_mode); 1630257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 1631257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch} 1632257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 1633257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 16343ef787dbeca8a5fb1086949cda830dccee07bfbdBen MurdochHandle<Code> KeyedIC::ComputeMonomorphicStub(Handle<JSObject> receiver, 16353ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch StubKind stub_kind, 1636257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch StrictModeFlag strict_mode, 16373ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Code> generic_stub) { 16383fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch if (receiver->HasFastElements() || 16393ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch receiver->HasFastSmiOnlyElements() || 16403fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch receiver->HasExternalArrayElements() || 16413fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch receiver->HasFastDoubleElements() || 16423fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch receiver->HasDictionaryElements()) { 16433ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return isolate()->stub_cache()->ComputeKeyedLoadOrStoreElement( 16443ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch receiver, stub_kind, strict_mode); 1645257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } else { 16463ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return generic_stub; 1647592a9fc1d8ea420377a2e7efd0600e20b058be2bBen Murdoch } 1648592a9fc1d8ea420377a2e7efd0600e20b058be2bBen Murdoch} 1649592a9fc1d8ea420377a2e7efd0600e20b058be2bBen Murdoch 1650592a9fc1d8ea420377a2e7efd0600e20b058be2bBen Murdoch 16513ef787dbeca8a5fb1086949cda830dccee07bfbdBen MurdochHandle<Map> KeyedIC::ComputeTransitionedMap(Handle<JSObject> receiver, 16523ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch StubKind stub_kind) { 16533ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch switch (stub_kind) { 16543ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case KeyedIC::STORE_TRANSITION_SMI_TO_OBJECT: 16553ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case KeyedIC::STORE_TRANSITION_DOUBLE_TO_OBJECT: 16563ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case KeyedIC::STORE_AND_GROW_TRANSITION_SMI_TO_OBJECT: 16573ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case KeyedIC::STORE_AND_GROW_TRANSITION_DOUBLE_TO_OBJECT: 16583ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return JSObject::GetElementsTransitionMap(receiver, FAST_ELEMENTS); 16593ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch break; 16603ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case KeyedIC::STORE_TRANSITION_SMI_TO_DOUBLE: 16613ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case KeyedIC::STORE_AND_GROW_TRANSITION_SMI_TO_DOUBLE: 16623ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return JSObject::GetElementsTransitionMap(receiver, FAST_DOUBLE_ELEMENTS); 16633ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch break; 16643ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch default: 16653ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch UNREACHABLE(); 16663ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return Handle<Map>::null(); 16673ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 16683ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch} 16693ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 16703ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 16713ef787dbeca8a5fb1086949cda830dccee07bfbdBen MurdochHandle<Code> KeyedStoreIC::GetElementStubWithoutMapCheck( 16723fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch bool is_js_array, 16733ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ElementsKind elements_kind, 16743ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch KeyedAccessGrowMode grow_mode) { 16753ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return KeyedStoreElementStub(is_js_array, elements_kind, grow_mode).GetCode(); 1676257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch} 1677257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 1678257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 16793ef787dbeca8a5fb1086949cda830dccee07bfbdBen MurdochHandle<Code> KeyedStoreIC::ComputePolymorphicStub( 16803ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch MapHandleList* receiver_maps, 16813ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch StrictModeFlag strict_mode, 16823ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch KeyedAccessGrowMode grow_mode) { 16833ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Collect MONOMORPHIC stubs for all target_receiver_maps. 16843ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch CodeHandleList handler_ics(receiver_maps->length()); 16853ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch MapHandleList transitioned_maps(receiver_maps->length()); 16863ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch for (int i = 0; i < receiver_maps->length(); ++i) { 16873ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Map> receiver_map(receiver_maps->at(i)); 16883ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Code> cached_stub; 16893ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Map> transitioned_map = 16903ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch receiver_map->FindTransitionedMap(receiver_maps); 16913ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (!transitioned_map.is_null()) { 16923ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch cached_stub = ElementsTransitionAndStoreStub( 16933ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch receiver_map->elements_kind(), // original elements_kind 16943ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch transitioned_map->elements_kind(), 16953ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch receiver_map->instance_type() == JS_ARRAY_TYPE, // is_js_array 16963ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch strict_mode, grow_mode).GetCode(); 16973ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } else { 16983ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch cached_stub = ComputeMonomorphicStubWithoutMapCheck(receiver_map, 16993ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch strict_mode, 17003ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch grow_mode); 17013ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 17023ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT(!cached_stub.is_null()); 17033ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch handler_ics.Add(cached_stub); 17043ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch transitioned_maps.Add(transitioned_map); 17053ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 17063ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch KeyedStoreStubCompiler compiler(isolate(), strict_mode, grow_mode); 17073ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Code> code = compiler.CompileStorePolymorphic( 17083ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch receiver_maps, &handler_ics, &transitioned_maps); 1709257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch isolate()->counters()->keyed_store_polymorphic_stubs()->Increment(); 17103ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch PROFILE(isolate(), 17113ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch CodeCreateEvent(Logger::KEYED_STORE_MEGAMORPHIC_IC_TAG, *code, 0)); 17123ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return code; 17133ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch} 17143ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 17153ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 17163ef787dbeca8a5fb1086949cda830dccee07bfbdBen MurdochKeyedIC::StubKind KeyedStoreIC::GetStubKind(Handle<JSObject> receiver, 17173ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Object> key, 17183ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Object> value) { 17193ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT(key->IsSmi()); 17203ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch int index = Smi::cast(*key)->value(); 17213ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch bool allow_growth = receiver->IsJSArray() && 17223ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch JSArray::cast(*receiver)->length()->IsSmi() && 17233ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch index >= Smi::cast(JSArray::cast(*receiver)->length())->value(); 17243ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 17253ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (allow_growth) { 17263ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Handle growing array in stub if necessary. 17273ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (receiver->HasFastSmiOnlyElements()) { 17283ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (value->IsHeapNumber()) { 17293ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return STORE_AND_GROW_TRANSITION_SMI_TO_DOUBLE; 17303ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 17313ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (value->IsHeapObject()) { 17323ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return STORE_AND_GROW_TRANSITION_SMI_TO_OBJECT; 17333ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 17343ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } else if (receiver->HasFastDoubleElements()) { 17353ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (!value->IsSmi() && !value->IsHeapNumber()) { 17363ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return STORE_AND_GROW_TRANSITION_DOUBLE_TO_OBJECT; 17373ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 17383ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 17393ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return STORE_AND_GROW_NO_TRANSITION; 17403ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } else { 17413ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Handle only in-bounds elements accesses. 17423ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (receiver->HasFastSmiOnlyElements()) { 17433ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (value->IsHeapNumber()) { 17443ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return STORE_TRANSITION_SMI_TO_DOUBLE; 17453ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } else if (value->IsHeapObject()) { 17463ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return STORE_TRANSITION_SMI_TO_OBJECT; 17473ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 17483ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } else if (receiver->HasFastDoubleElements()) { 17493ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (!value->IsSmi() && !value->IsHeapNumber()) { 17503ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return STORE_TRANSITION_DOUBLE_TO_OBJECT; 17513ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 17523ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 17533ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return STORE_NO_TRANSITION; 17543ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 17555d4cdbf7a67d3662fa0bee4efdb7edd8daec9b0bBen Murdoch} 17565d4cdbf7a67d3662fa0bee4efdb7edd8daec9b0bBen Murdoch 17575d4cdbf7a67d3662fa0bee4efdb7edd8daec9b0bBen Murdoch 17585913587db4c6bab03d97bfe44b06289fd6d7270dJohn ReckMaybeObject* KeyedStoreIC::Store(State state, 1759e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch StrictModeFlag strict_mode, 17605913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck Handle<Object> object, 17615913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck Handle<Object> key, 1762257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Handle<Object> value, 1763257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch bool force_generic) { 1764a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (key->IsSymbol()) { 1765a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Handle<String> name = Handle<String>::cast(key); 1766a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 17673ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Handle proxies. 17683ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (object->IsJSProxy()) { 17693ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return JSProxy::cast(*object)->SetProperty( 17703ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch *name, *value, NONE, strict_mode); 17713ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 17723ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 1773a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If the object is undefined or null it's illegal to try to set any 1774a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // properties on it; throw a TypeError in that case. 1775a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (object->IsUndefined() || object->IsNull()) { 1776a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return TypeError("non_object_property_store", object, name); 1777a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1778a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1779a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Ignore stores where the receiver is not a JSObject. 1780a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (!object->IsJSObject()) return *value; 1781a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Handle<JSObject> receiver = Handle<JSObject>::cast(object); 1782a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1783a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check if the given name is an array index. 1784a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block uint32_t index; 1785a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (name->AsArrayIndex(&index)) { 17863ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Object> result = 17873ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch JSObject::SetElement(receiver, index, value, NONE, strict_mode); 17883ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch RETURN_IF_EMPTY_HANDLE(isolate(), result); 1789a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return *value; 1790a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1791a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1792a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Update inline cache and stub cache. 17933ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (FLAG_use_ic && !receiver->IsJSGlobalProxy()) { 17943ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch LookupResult lookup(isolate()); 17953ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (LookupForWrite(receiver, name, &lookup)) { 17963ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch UpdateCaches(&lookup, state, strict_mode, receiver, name, value); 17973ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 1798a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1799a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1800a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Set the property. 1801e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch return receiver->SetProperty(*name, *value, NONE, strict_mode); 1802a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1803a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1804a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Do not use ICs for objects that require access checks (including 1805a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // the global object). 1806a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bool use_ic = FLAG_use_ic && !object->IsAccessCheckNeeded(); 1807a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(!(use_ic && object->IsJSGlobalProxy())); 1808a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 18093ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block if (use_ic) { 18103ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Code> stub = (strict_mode == kStrictMode) 1811257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch ? generic_stub_strict() 1812257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch : generic_stub(); 18133fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch if (object->IsJSObject()) { 18143ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<JSObject> receiver = Handle<JSObject>::cast(object); 18153ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (receiver->elements()->map() == 18163ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch isolate()->heap()->non_strict_arguments_elements_map()) { 18173fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch stub = non_strict_arguments_stub(); 18183fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } else if (!force_generic) { 18193ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (key->IsSmi() && (target() != *non_strict_arguments_stub())) { 18203ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch StubKind stub_kind = GetStubKind(receiver, key, value); 18213ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch stub = ComputeStub(receiver, stub_kind, strict_mode, stub); 18223fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 18233ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } else { 18243ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch TRACE_GENERIC_IC("KeyedStoreIC", "force generic"); 18253ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block } 18263ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block } 18273ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (!stub.is_null()) set_target(*stub); 18283ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block } 1829a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 18303ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch TRACE_IC("KeyedStoreIC", key, state, target()); 1831257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 1832a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Set the property. 183344f0eee88ff00398ff7f715fab053374d808c90dSteve Block return Runtime::SetObjectProperty( 183444f0eee88ff00398ff7f715fab053374d808c90dSteve Block isolate(), object , key, value, NONE, strict_mode); 1835a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1836a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1837a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1838a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid KeyedStoreIC::UpdateCaches(LookupResult* lookup, 1839a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block State state, 1840e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch StrictModeFlag strict_mode, 1841a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Handle<JSObject> receiver, 1842a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Handle<String> name, 1843a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Handle<Object> value) { 18443ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT(!receiver->IsJSGlobalProxy()); 18453ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT(StoreICableLookup(lookup)); 18463ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // These are not cacheable, so we never see such LookupResults here. 18473ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT(lookup->type() != HANDLER); 18483ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // We get only called for properties or transitions, see StoreICableLookup. 18493ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT(lookup->type() != NULL_DESCRIPTOR); 1850a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1851a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If the property has a non-field type allowing map transitions 1852a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // where there is extra room in the object, we leave the IC in its 1853a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // current state. 1854a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block PropertyType type = lookup->type(); 1855a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1856a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Compute the code stub for this store; used for rewriting to 1857a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // monomorphic state and making sure that the code stub is in the 1858a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // stub cache. 18593ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Code> code; 1860a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1861a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block switch (type) { 18623ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case FIELD: 18633ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch code = isolate()->stub_cache()->ComputeKeyedStoreField( 18643ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch name, receiver, lookup->GetFieldIndex(), 18653ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Map>::null(), strict_mode); 1866a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block break; 18673ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case MAP_TRANSITION: 1868a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (lookup->GetAttributes() == NONE) { 1869a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Handle<Map> transition(lookup->GetTransitionMap()); 1870a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int index = transition->PropertyIndexFor(*name); 18713ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch code = isolate()->stub_cache()->ComputeKeyedStoreField( 18723ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch name, receiver, index, transition, strict_mode); 1873a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block break; 1874a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1875a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // fall through. 18763ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case NORMAL: 18773ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case CONSTANT_FUNCTION: 18783ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case CALLBACKS: 18793ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case INTERCEPTOR: 18803ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case CONSTANT_TRANSITION: 18813ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case ELEMENTS_TRANSITION: 1882a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Always rewrite to the generic case so that we do not 1883a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // repeatedly try to rewrite. 18843ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch code = (strict_mode == kStrictMode) 1885e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch ? generic_stub_strict() 1886e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch : generic_stub(); 1887a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block break; 18883ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case HANDLER: 18893ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case NULL_DESCRIPTOR: 18903ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch UNREACHABLE(); 18913ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return; 1892a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1893a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 18943ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT(!code.is_null()); 1895a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1896a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Patch the call site depending on the state of the cache. Make 1897a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // sure to always rewrite from monomorphic to megamorphic. 1898a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(state != MONOMORPHIC_PROTOTYPE_FAILURE); 1899a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (state == UNINITIALIZED || state == PREMONOMORPHIC) { 19003ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch set_target(*code); 1901a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } else if (state == MONOMORPHIC) { 1902e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch set_target((strict_mode == kStrictMode) 19033ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ? *megamorphic_stub_strict() 19043ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch : *megamorphic_stub()); 1905a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 1906a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 19073ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch TRACE_IC("KeyedStoreIC", name, state, target()); 1908a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1909a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1910a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 19113ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch#undef TRACE_IC 19123ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 19133ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 1914a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// ---------------------------------------------------------------------------- 1915a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Static IC stub generators. 1916a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 1917a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 19187f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch// Used from ic-<arch>.cc. 19198b112d2025046f85ef7f6be087c6129c872ebad2Ben MurdochRUNTIME_FUNCTION(MaybeObject*, CallIC_Miss) { 19203ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch HandleScope scope(isolate); 1921a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(args.length() == 2); 192244f0eee88ff00398ff7f715fab053374d808c90dSteve Block CallIC ic(isolate); 19236ded16be15dd865a9b21ea304d5273c8be299c87Steve Block IC::State state = IC::StateFrom(ic.target(), args[0], args[1]); 1924b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Code::ExtraICState extra_ic_state = ic.target()->extra_ic_state(); 1925b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch MaybeObject* maybe_result = ic.LoadFunction(state, 1926b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch extra_ic_state, 1927b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch args.at<Object>(0), 1928b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch args.at<String>(1)); 19293ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Result could be a function or a failure. 19303ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch JSFunction* raw_function = NULL; 19313ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (!maybe_result->To(&raw_function)) return maybe_result; 1932a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1933a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The first time the inline cache is updated may be the first time the 19343ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // function it references gets called. If the function is lazily compiled 1935a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // then the first call will trigger a compilation. We check for this case 1936a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // and we do the compilation immediately, instead of waiting for the stub 19373ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // currently attached to the JSFunction object to trigger compilation. 19383ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (raw_function->is_compiled()) return raw_function; 19393ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 19403ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<JSFunction> function(raw_function); 19413ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch JSFunction::CompileLazy(function, CLEAR_EXCEPTION); 19423ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return *function; 19437f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch} 1944a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 19457f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch 19467f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch// Used from ic-<arch>.cc. 19478b112d2025046f85ef7f6be087c6129c872ebad2Ben MurdochRUNTIME_FUNCTION(MaybeObject*, KeyedCallIC_Miss) { 19483ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch HandleScope scope(isolate); 19497f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch ASSERT(args.length() == 2); 195044f0eee88ff00398ff7f715fab053374d808c90dSteve Block KeyedCallIC ic(isolate); 19517f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch IC::State state = IC::StateFrom(ic.target(), args[0], args[1]); 19523ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch MaybeObject* maybe_result = 19537f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch ic.LoadFunction(state, args.at<Object>(0), args.at<Object>(1)); 19543ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Result could be a function or a failure. 19553ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch JSFunction* raw_function = NULL; 19563ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (!maybe_result->To(&raw_function)) return maybe_result; 1957592a9fc1d8ea420377a2e7efd0600e20b058be2bBen Murdoch 19583ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (raw_function->is_compiled()) return raw_function; 19593ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 19603ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<JSFunction> function(raw_function); 19613ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch JSFunction::CompileLazy(function, CLEAR_EXCEPTION); 19623ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return *function; 1963a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1964a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1965a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 19667f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch// Used from ic-<arch>.cc. 19678b112d2025046f85ef7f6be087c6129c872ebad2Ben MurdochRUNTIME_FUNCTION(MaybeObject*, LoadIC_Miss) { 19683ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch HandleScope scope(isolate); 1969a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(args.length() == 2); 197044f0eee88ff00398ff7f715fab053374d808c90dSteve Block LoadIC ic(isolate); 19716ded16be15dd865a9b21ea304d5273c8be299c87Steve Block IC::State state = IC::StateFrom(ic.target(), args[0], args[1]); 1972a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return ic.Load(state, args.at<Object>(0), args.at<String>(1)); 1973a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1974a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1975a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 19767f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch// Used from ic-<arch>.cc 19778b112d2025046f85ef7f6be087c6129c872ebad2Ben MurdochRUNTIME_FUNCTION(MaybeObject*, KeyedLoadIC_Miss) { 19783ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch HandleScope scope(isolate); 1979a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(args.length() == 2); 198044f0eee88ff00398ff7f715fab053374d808c90dSteve Block KeyedLoadIC ic(isolate); 19816ded16be15dd865a9b21ea304d5273c8be299c87Steve Block IC::State state = IC::StateFrom(ic.target(), args[0], args[1]); 1982257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch return ic.Load(state, args.at<Object>(0), args.at<Object>(1), false); 1983257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch} 1984257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 1985257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 1986257744e915dfc84d6d07a6b2accf8402d9ffc708Ben MurdochRUNTIME_FUNCTION(MaybeObject*, KeyedLoadIC_MissForceGeneric) { 19873ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch HandleScope scope(isolate); 1988257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch ASSERT(args.length() == 2); 1989257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch KeyedLoadIC ic(isolate); 1990257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch IC::State state = IC::StateFrom(ic.target(), args[0], args[1]); 1991257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch return ic.Load(state, args.at<Object>(0), args.at<Object>(1), true); 1992a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 1993a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1994a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 19957f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch// Used from ic-<arch>.cc. 19968b112d2025046f85ef7f6be087c6129c872ebad2Ben MurdochRUNTIME_FUNCTION(MaybeObject*, StoreIC_Miss) { 19973ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch HandleScope scope; 1998a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(args.length() == 3); 199944f0eee88ff00398ff7f715fab053374d808c90dSteve Block StoreIC ic(isolate); 20006ded16be15dd865a9b21ea304d5273c8be299c87Steve Block IC::State state = IC::StateFrom(ic.target(), args[0], args[1]); 20011e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Code::ExtraICState extra_ic_state = ic.target()->extra_ic_state(); 2002e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch return ic.Store(state, 20033ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Code::GetStrictMode(extra_ic_state), 2004e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch args.at<Object>(0), 2005e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch args.at<String>(1), 2006e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch args.at<Object>(2)); 2007a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 2008a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2009a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 20108b112d2025046f85ef7f6be087c6129c872ebad2Ben MurdochRUNTIME_FUNCTION(MaybeObject*, StoreIC_ArrayLength) { 20116ded16be15dd865a9b21ea304d5273c8be299c87Steve Block NoHandleAllocation nha; 20126ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 20136ded16be15dd865a9b21ea304d5273c8be299c87Steve Block ASSERT(args.length() == 2); 20143ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch JSArray* receiver = JSArray::cast(args[0]); 20156ded16be15dd865a9b21ea304d5273c8be299c87Steve Block Object* len = args[1]; 20166ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 20175913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck // The generated code should filter out non-Smis before we get here. 20185913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck ASSERT(len->IsSmi()); 20195913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck 20203ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch#ifdef DEBUG 20213ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // The length property has to be a writable callback property. 20223ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch LookupResult debug_lookup(isolate); 20233ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch receiver->LocalLookup(isolate->heap()->length_symbol(), &debug_lookup); 20243ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT(debug_lookup.type() == CALLBACKS && !debug_lookup.IsReadOnly()); 20253ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch#endif 20263ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 20275913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck Object* result; 20285913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck { MaybeObject* maybe_result = receiver->SetElementsLength(len); 20295913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck if (!maybe_result->ToObject(&result)) return maybe_result; 20305913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck } 20316ded16be15dd865a9b21ea304d5273c8be299c87Steve Block return len; 20326ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 20336ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 20346ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 2035a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Extend storage is called in a store inline cache when 2036a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// it is necessary to extend the properties array of a 2037a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// JSObject. 20388b112d2025046f85ef7f6be087c6129c872ebad2Ben MurdochRUNTIME_FUNCTION(MaybeObject*, SharedStoreIC_ExtendStorage) { 2039a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block NoHandleAllocation na; 2040a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(args.length() == 3); 2041a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2042a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Convert the parameters 2043a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block JSObject* object = JSObject::cast(args[0]); 2044a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Map* transition = Map::cast(args[1]); 2045a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block Object* value = args[2]; 2046a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2047a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Check the object has run out out property space. 2048a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(object->HasFastProperties()); 2049a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(object->map()->unused_property_fields() == 0); 2050a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2051a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Expand the properties array. 2052a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block FixedArray* old_storage = object->properties(); 2053a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int new_unused = transition->unused_property_fields(); 2054a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block int new_size = old_storage->length() + new_unused + 1; 20555913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck Object* result; 20565913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck { MaybeObject* maybe_result = old_storage->CopySize(new_size); 20575913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck if (!maybe_result->ToObject(&result)) return maybe_result; 20585913587db4c6bab03d97bfe44b06289fd6d7270dJohn Reck } 2059a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block FixedArray* new_storage = FixedArray::cast(result); 2060a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block new_storage->set(old_storage->length(), value); 2061a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2062a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Set the new property value and do the map transition. 2063a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block object->set_properties(new_storage); 2064a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block object->set_map(transition); 2065a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2066a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Return the stored value. 2067a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return value; 2068a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 2069a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2070a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 20717f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch// Used from ic-<arch>.cc. 20728b112d2025046f85ef7f6be087c6129c872ebad2Ben MurdochRUNTIME_FUNCTION(MaybeObject*, KeyedStoreIC_Miss) { 20733ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch HandleScope scope(isolate); 2074a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(args.length() == 3); 207544f0eee88ff00398ff7f715fab053374d808c90dSteve Block KeyedStoreIC ic(isolate); 20766ded16be15dd865a9b21ea304d5273c8be299c87Steve Block IC::State state = IC::StateFrom(ic.target(), args[0], args[1]); 2077e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch Code::ExtraICState extra_ic_state = ic.target()->extra_ic_state(); 2078e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch return ic.Store(state, 20793ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Code::GetStrictMode(extra_ic_state), 2080e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch args.at<Object>(0), 2081e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch args.at<Object>(1), 2082257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch args.at<Object>(2), 2083257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch false); 2084257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch} 2085257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 2086257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 2087257744e915dfc84d6d07a6b2accf8402d9ffc708Ben MurdochRUNTIME_FUNCTION(MaybeObject*, KeyedStoreIC_Slow) { 2088257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch NoHandleAllocation na; 2089257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch ASSERT(args.length() == 3); 2090257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch KeyedStoreIC ic(isolate); 2091257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Code::ExtraICState extra_ic_state = ic.target()->extra_ic_state(); 2092257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Handle<Object> object = args.at<Object>(0); 2093257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Handle<Object> key = args.at<Object>(1); 2094257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Handle<Object> value = args.at<Object>(2); 20953ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch StrictModeFlag strict_mode = Code::GetStrictMode(extra_ic_state); 2096257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch return Runtime::SetObjectProperty(isolate, 2097257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch object, 2098257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch key, 2099257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch value, 2100257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch NONE, 2101257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch strict_mode); 2102257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch} 2103257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 2104257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 2105257744e915dfc84d6d07a6b2accf8402d9ffc708Ben MurdochRUNTIME_FUNCTION(MaybeObject*, KeyedStoreIC_MissForceGeneric) { 21063ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch HandleScope scope(isolate); 2107257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch ASSERT(args.length() == 3); 2108257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch KeyedStoreIC ic(isolate); 2109257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch IC::State state = IC::StateFrom(ic.target(), args[0], args[1]); 2110257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Code::ExtraICState extra_ic_state = ic.target()->extra_ic_state(); 2111257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch return ic.Store(state, 21123ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Code::GetStrictMode(extra_ic_state), 2113257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch args.at<Object>(0), 2114257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch args.at<Object>(1), 2115257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch args.at<Object>(2), 2116257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch true); 2117a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 2118a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2119a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2120257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdochvoid UnaryOpIC::patch(Code* code) { 2121b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch set_target(code); 2122b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 2123b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 2124b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 2125257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdochconst char* UnaryOpIC::GetName(TypeInfo type_info) { 2126257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch switch (type_info) { 2127257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch case UNINITIALIZED: return "Uninitialized"; 2128257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch case SMI: return "Smi"; 2129257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch case HEAP_NUMBER: return "HeapNumbers"; 2130257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch case GENERIC: return "Generic"; 2131257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch default: return "Invalid"; 2132257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 2133257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch} 2134257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 2135257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 2136257744e915dfc84d6d07a6b2accf8402d9ffc708Ben MurdochUnaryOpIC::State UnaryOpIC::ToState(TypeInfo type_info) { 2137257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch switch (type_info) { 2138257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch case UNINITIALIZED: 2139257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch return ::v8::internal::UNINITIALIZED; 2140257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch case SMI: 2141257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch case HEAP_NUMBER: 2142257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch return MONOMORPHIC; 2143257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch case GENERIC: 2144257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch return MEGAMORPHIC; 2145257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 2146257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch UNREACHABLE(); 2147257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch return ::v8::internal::UNINITIALIZED; 2148257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch} 2149257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 2150257744e915dfc84d6d07a6b2accf8402d9ffc708Ben MurdochUnaryOpIC::TypeInfo UnaryOpIC::GetTypeInfo(Handle<Object> operand) { 2151257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch ::v8::internal::TypeInfo operand_type = 2152257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch ::v8::internal::TypeInfo::TypeFromValue(operand); 2153257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (operand_type.IsSmi()) { 2154257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch return SMI; 2155257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } else if (operand_type.IsNumber()) { 2156257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch return HEAP_NUMBER; 2157257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } else { 2158257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch return GENERIC; 2159257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 2160257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch} 2161257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 2162257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 2163257744e915dfc84d6d07a6b2accf8402d9ffc708Ben MurdochUnaryOpIC::TypeInfo UnaryOpIC::ComputeNewType( 2164257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch UnaryOpIC::TypeInfo current_type, 2165257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch UnaryOpIC::TypeInfo previous_type) { 2166257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch switch (previous_type) { 2167257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch case UnaryOpIC::UNINITIALIZED: 2168257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch return current_type; 2169257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch case UnaryOpIC::SMI: 2170257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch return (current_type == UnaryOpIC::GENERIC) 2171257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch ? UnaryOpIC::GENERIC 2172257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch : UnaryOpIC::HEAP_NUMBER; 2173257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch case UnaryOpIC::HEAP_NUMBER: 2174257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch return UnaryOpIC::GENERIC; 2175257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch case UnaryOpIC::GENERIC: 2176257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch // We should never do patching if we are in GENERIC state. 2177257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch UNREACHABLE(); 2178257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch return UnaryOpIC::GENERIC; 2179257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 2180257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch UNREACHABLE(); 2181257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch return UnaryOpIC::GENERIC; 2182257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch} 2183257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 2184257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 2185257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdochvoid BinaryOpIC::patch(Code* code) { 2186257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch set_target(code); 2187257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch} 2188257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 2189257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 2190257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdochconst char* BinaryOpIC::GetName(TypeInfo type_info) { 2191b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch switch (type_info) { 2192b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case UNINITIALIZED: return "Uninitialized"; 2193b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case SMI: return "SMI"; 2194b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case INT32: return "Int32s"; 2195b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case HEAP_NUMBER: return "HeapNumbers"; 219644f0eee88ff00398ff7f715fab053374d808c90dSteve Block case ODDBALL: return "Oddball"; 2197257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch case BOTH_STRING: return "BothStrings"; 2198b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case STRING: return "Strings"; 2199b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case GENERIC: return "Generic"; 2200b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch default: return "Invalid"; 2201b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 2202b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 2203b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 2204b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 2205257744e915dfc84d6d07a6b2accf8402d9ffc708Ben MurdochBinaryOpIC::State BinaryOpIC::ToState(TypeInfo type_info) { 2206b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch switch (type_info) { 2207b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case UNINITIALIZED: 2208b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch return ::v8::internal::UNINITIALIZED; 2209b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case SMI: 2210b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case INT32: 2211b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case HEAP_NUMBER: 221244f0eee88ff00398ff7f715fab053374d808c90dSteve Block case ODDBALL: 2213257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch case BOTH_STRING: 2214b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case STRING: 2215b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch return MONOMORPHIC; 2216b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case GENERIC: 2217b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch return MEGAMORPHIC; 2218b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 2219b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch UNREACHABLE(); 2220b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch return ::v8::internal::UNINITIALIZED; 2221b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 2222b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 2223b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 2224257744e915dfc84d6d07a6b2accf8402d9ffc708Ben MurdochBinaryOpIC::TypeInfo BinaryOpIC::JoinTypes(BinaryOpIC::TypeInfo x, 2225257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch BinaryOpIC::TypeInfo y) { 2226b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (x == UNINITIALIZED) return y; 2227b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (y == UNINITIALIZED) return x; 2228257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (x == y) return x; 2229257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (x == BOTH_STRING && y == STRING) return STRING; 2230257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (x == STRING && y == BOTH_STRING) return STRING; 2231257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (x == STRING || x == BOTH_STRING || y == STRING || y == BOTH_STRING) { 2232257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch return GENERIC; 2233257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 2234257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (x > y) return x; 2235b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch return y; 2236b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 2237b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 2238257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 2239257744e915dfc84d6d07a6b2accf8402d9ffc708Ben MurdochBinaryOpIC::TypeInfo BinaryOpIC::GetTypeInfo(Handle<Object> left, 2240257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Handle<Object> right) { 2241b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ::v8::internal::TypeInfo left_type = 2242b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ::v8::internal::TypeInfo::TypeFromValue(left); 2243b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ::v8::internal::TypeInfo right_type = 2244b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ::v8::internal::TypeInfo::TypeFromValue(right); 2245b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 2246b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (left_type.IsSmi() && right_type.IsSmi()) { 2247b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch return SMI; 2248b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 2249b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 2250b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (left_type.IsInteger32() && right_type.IsInteger32()) { 22511e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // Platforms with 32-bit Smis have no distinct INT32 type. 22521e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block if (kSmiValueSize == 32) return SMI; 2253b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch return INT32; 2254b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 2255b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 2256b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (left_type.IsNumber() && right_type.IsNumber()) { 2257b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch return HEAP_NUMBER; 2258b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 2259b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 2260257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch // Patching for fast string ADD makes sense even if only one of the 2261257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch // arguments is a string. 2262257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (left_type.IsString()) { 2263257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch return right_type.IsString() ? BOTH_STRING : STRING; 2264257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } else if (right_type.IsString()) { 2265b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch return STRING; 2266b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 2267b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 226844f0eee88ff00398ff7f715fab053374d808c90dSteve Block // Check for oddball objects. 226944f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (left->IsUndefined() && right->IsNumber()) return ODDBALL; 227044f0eee88ff00398ff7f715fab053374d808c90dSteve Block if (left->IsNumber() && right->IsUndefined()) return ODDBALL; 227144f0eee88ff00398ff7f715fab053374d808c90dSteve Block 2272b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch return GENERIC; 2273b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 2274b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 2275b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 2276257744e915dfc84d6d07a6b2accf8402d9ffc708Ben MurdochRUNTIME_FUNCTION(MaybeObject*, UnaryOp_Patch) { 2277257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch ASSERT(args.length() == 4); 2278257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 2279257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch HandleScope scope(isolate); 2280257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Handle<Object> operand = args.at<Object>(0); 22813fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch Token::Value op = static_cast<Token::Value>(args.smi_at(1)); 22823fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch UnaryOverwriteMode mode = static_cast<UnaryOverwriteMode>(args.smi_at(2)); 2283257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch UnaryOpIC::TypeInfo previous_type = 22843fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch static_cast<UnaryOpIC::TypeInfo>(args.smi_at(3)); 2285b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 2286257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch UnaryOpIC::TypeInfo type = UnaryOpIC::GetTypeInfo(operand); 2287257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch type = UnaryOpIC::ComputeNewType(type, previous_type); 2288257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 22893fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch UnaryOpStub stub(op, mode, type); 22903fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch Handle<Code> code = stub.GetCode(); 2291257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (!code.is_null()) { 2292257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (FLAG_trace_ic) { 2293257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch PrintF("[UnaryOpIC (%s->%s)#%s]\n", 2294257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch UnaryOpIC::GetName(previous_type), 2295257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch UnaryOpIC::GetName(type), 2296257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Token::Name(op)); 2297257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 2298257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch UnaryOpIC ic(isolate); 2299257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch ic.patch(*code); 2300257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 2301b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 2302257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Handle<JSBuiltinsObject> builtins = Handle<JSBuiltinsObject>( 2303257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch isolate->thread_local_top()->context_->builtins(), isolate); 2304257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Object* builtin = NULL; // Initialization calms down the compiler. 2305257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch switch (op) { 2306257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch case Token::SUB: 2307257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch builtin = builtins->javascript_builtin(Builtins::UNARY_MINUS); 2308257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch break; 2309257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch case Token::BIT_NOT: 2310257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch builtin = builtins->javascript_builtin(Builtins::BIT_NOT); 2311257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch break; 2312257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch default: 2313257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch UNREACHABLE(); 2314257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 2315257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 2316257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Handle<JSFunction> builtin_function(JSFunction::cast(builtin), isolate); 2317257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 2318257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch bool caught_exception; 2319257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch Handle<Object> result = Execution::Call(builtin_function, operand, 0, NULL, 2320257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch &caught_exception); 2321257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (caught_exception) { 2322257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch return Failure::Exception(); 2323257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 2324257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch return *result; 2325257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch} 2326257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 2327257744e915dfc84d6d07a6b2accf8402d9ffc708Ben MurdochRUNTIME_FUNCTION(MaybeObject*, BinaryOp_Patch) { 2328b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(args.length() == 5); 2329b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 233044f0eee88ff00398ff7f715fab053374d808c90dSteve Block HandleScope scope(isolate); 2331b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Handle<Object> left = args.at<Object>(0); 2332b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Handle<Object> right = args.at<Object>(1); 23333fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch int key = args.smi_at(2); 23343fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch Token::Value op = static_cast<Token::Value>(args.smi_at(3)); 2335257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch BinaryOpIC::TypeInfo previous_type = 23363fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch static_cast<BinaryOpIC::TypeInfo>(args.smi_at(4)); 2337257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 2338257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch BinaryOpIC::TypeInfo type = BinaryOpIC::GetTypeInfo(left, right); 2339257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch type = BinaryOpIC::JoinTypes(type, previous_type); 2340257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch BinaryOpIC::TypeInfo result_type = BinaryOpIC::UNINITIALIZED; 2341257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if ((type == BinaryOpIC::STRING || type == BinaryOpIC::BOTH_STRING) && 2342257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch op != Token::ADD) { 2343257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch type = BinaryOpIC::GENERIC; 2344257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 2345257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (type == BinaryOpIC::SMI && previous_type == BinaryOpIC::SMI) { 2346257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (op == Token::DIV || 2347257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch op == Token::MUL || 2348257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch op == Token::SHR || 2349257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch kSmiValueSize == 32) { 2350b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Arithmetic on two Smi inputs has yielded a heap number. 2351b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // That is the only way to get here from the Smi stub. 23521e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // With 32-bit Smis, all overflows give heap numbers, but with 23531e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // 31-bit Smis, most operations overflow to int32 results. 2354257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch result_type = BinaryOpIC::HEAP_NUMBER; 2355b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } else { 2356b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Other operations on SMIs that overflow yield int32s. 2357257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch result_type = BinaryOpIC::INT32; 2358b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 2359b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 2360257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (type == BinaryOpIC::INT32 && previous_type == BinaryOpIC::INT32) { 2361b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // We must be here because an operation on two INT32 types overflowed. 2362257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch result_type = BinaryOpIC::HEAP_NUMBER; 2363b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 2364b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 23653fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch BinaryOpStub stub(key, type, result_type); 23663fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch Handle<Code> code = stub.GetCode(); 2367b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (!code.is_null()) { 2368b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (FLAG_trace_ic) { 2369257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch PrintF("[BinaryOpIC (%s->(%s->%s))#%s]\n", 2370257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch BinaryOpIC::GetName(previous_type), 2371257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch BinaryOpIC::GetName(type), 2372257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch BinaryOpIC::GetName(result_type), 2373b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Token::Name(op)); 2374b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 2375257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch BinaryOpIC ic(isolate); 23761e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block ic.patch(*code); 2377b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 2378b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch // Activate inlined smi code. 2379257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch if (previous_type == BinaryOpIC::UNINITIALIZED) { 2380b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch PatchInlinedSmiCode(ic.address()); 2381b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 2382b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 2383b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 238444f0eee88ff00398ff7f715fab053374d808c90dSteve Block Handle<JSBuiltinsObject> builtins = Handle<JSBuiltinsObject>( 238544f0eee88ff00398ff7f715fab053374d808c90dSteve Block isolate->thread_local_top()->context_->builtins(), isolate); 2386b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Object* builtin = NULL; // Initialization calms down the compiler. 2387ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke switch (op) { 2388ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke case Token::ADD: 2389ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke builtin = builtins->javascript_builtin(Builtins::ADD); 2390ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke break; 2391ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke case Token::SUB: 2392ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke builtin = builtins->javascript_builtin(Builtins::SUB); 2393ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke break; 2394ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke case Token::MUL: 2395ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke builtin = builtins->javascript_builtin(Builtins::MUL); 2396ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke break; 2397ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke case Token::DIV: 2398ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke builtin = builtins->javascript_builtin(Builtins::DIV); 2399ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke break; 2400ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke case Token::MOD: 2401ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke builtin = builtins->javascript_builtin(Builtins::MOD); 2402ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke break; 2403ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke case Token::BIT_AND: 2404ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke builtin = builtins->javascript_builtin(Builtins::BIT_AND); 2405ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke break; 2406ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke case Token::BIT_OR: 2407ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke builtin = builtins->javascript_builtin(Builtins::BIT_OR); 2408ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke break; 2409ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke case Token::BIT_XOR: 2410ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke builtin = builtins->javascript_builtin(Builtins::BIT_XOR); 2411ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke break; 2412ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke case Token::SHR: 2413ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke builtin = builtins->javascript_builtin(Builtins::SHR); 2414ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke break; 2415ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke case Token::SAR: 2416ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke builtin = builtins->javascript_builtin(Builtins::SAR); 2417ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke break; 2418ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke case Token::SHL: 2419ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke builtin = builtins->javascript_builtin(Builtins::SHL); 2420ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke break; 2421ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke default: 2422ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke UNREACHABLE(); 2423ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke } 2424ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke 242544f0eee88ff00398ff7f715fab053374d808c90dSteve Block Handle<JSFunction> builtin_function(JSFunction::cast(builtin), isolate); 2426ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke 2427ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke bool caught_exception; 24283ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<Object> builtin_args[] = { right }; 2429ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke Handle<Object> result = Execution::Call(builtin_function, 2430ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke left, 2431ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke ARRAY_SIZE(builtin_args), 2432ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke builtin_args, 2433ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke &caught_exception); 2434ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke if (caught_exception) { 2435ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke return Failure::Exception(); 2436ac95265630a4e0c317a7a7201d17a57df7d9bcceLeon Clarke } 24376ded16be15dd865a9b21ea304d5273c8be299c87Steve Block return *result; 24386ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 24396ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 24406ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 2441b0fe1620dcb4135ac3ab2d66ff93072373911299Ben MurdochHandle<Code> CompareIC::GetUninitialized(Token::Value op) { 2442b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ICCompareStub stub(op, UNINITIALIZED); 2443b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch return stub.GetCode(); 2444b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 2445b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 2446b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 2447b0fe1620dcb4135ac3ab2d66ff93072373911299Ben MurdochCompareIC::State CompareIC::ComputeState(Code* target) { 2448b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch int key = target->major_key(); 2449b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch if (key == CodeStub::Compare) return GENERIC; 2450b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(key == CodeStub::CompareIC); 2451b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch return static_cast<State>(target->compare_state()); 2452b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 2453b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 2454b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 2455b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdochconst char* CompareIC::GetStateName(State state) { 2456b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch switch (state) { 2457b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case UNINITIALIZED: return "UNINITIALIZED"; 2458b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case SMIS: return "SMIS"; 2459b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case HEAP_NUMBERS: return "HEAP_NUMBERS"; 2460b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case OBJECTS: return "OBJECTS"; 24613ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case KNOWN_OBJECTS: return "OBJECTS"; 2462257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch case SYMBOLS: return "SYMBOLS"; 2463257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch case STRINGS: return "STRINGS"; 2464b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case GENERIC: return "GENERIC"; 2465b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch default: 2466b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch UNREACHABLE(); 2467b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch return NULL; 2468b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 2469b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 2470b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 2471b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 2472b0fe1620dcb4135ac3ab2d66ff93072373911299Ben MurdochCompareIC::State CompareIC::TargetState(State state, 2473b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch bool has_inlined_smi_code, 2474b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Handle<Object> x, 2475b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch Handle<Object> y) { 24763ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch switch (state) { 24773ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case UNINITIALIZED: 24783ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (x->IsSmi() && y->IsSmi()) return SMIS; 24793ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (x->IsNumber() && y->IsNumber()) return HEAP_NUMBERS; 24803ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (Token::IsOrderedRelationalCompareOp(op_)) { 24813ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Ordered comparisons treat undefined as NaN, so the 24823ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // HEAP_NUMBER stub will do the right thing. 24833ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if ((x->IsNumber() && y->IsUndefined()) || 24843ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch (y->IsNumber() && x->IsUndefined())) { 24853ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return HEAP_NUMBERS; 24863ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 24873ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 24883ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (x->IsSymbol() && y->IsSymbol()) { 24893ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // We compare symbols as strings if we need to determine 24903ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // the order in a non-equality compare. 24913ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return Token::IsEqualityOp(op_) ? SYMBOLS : STRINGS; 24923ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 24933ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (x->IsString() && y->IsString()) return STRINGS; 24943ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (!Token::IsEqualityOp(op_)) return GENERIC; 24953ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (x->IsJSObject() && y->IsJSObject()) { 24963ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (Handle<JSObject>::cast(x)->map() == 24973ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Handle<JSObject>::cast(y)->map() && 24983ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Token::IsEqualityOp(op_)) { 24993ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return KNOWN_OBJECTS; 25003ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } else { 25013ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return OBJECTS; 25023ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 25033ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 25043ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return GENERIC; 25053ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case SMIS: 25063ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return has_inlined_smi_code && x->IsNumber() && y->IsNumber() 25073ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ? HEAP_NUMBERS 25083ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch : GENERIC; 25093ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case SYMBOLS: 25103ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT(Token::IsEqualityOp(op_)); 25113ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return x->IsString() && y->IsString() ? STRINGS : GENERIC; 25123ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case HEAP_NUMBERS: 25133ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case STRINGS: 25143ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case OBJECTS: 25153ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case KNOWN_OBJECTS: 25163ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch case GENERIC: 25173ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return GENERIC; 2518257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch } 25193ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch UNREACHABLE(); 2520b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch return GENERIC; 2521b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 2522b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 2523b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 2524b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch// Used from ic_<arch>.cc. 25258b112d2025046f85ef7f6be087c6129c872ebad2Ben MurdochRUNTIME_FUNCTION(Code*, CompareIC_Miss) { 2526b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch NoHandleAllocation na; 2527b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(args.length() == 3); 25283fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch CompareIC ic(isolate, static_cast<Token::Value>(args.smi_at(2))); 2529b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ic.UpdateCaches(args.at<Object>(0), args.at<Object>(1)); 2530b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch return ic.target(); 2531b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch} 2532b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 2533b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 253469a99ed0b2b2ef69d393c371b03db3a98aaf880eBen MurdochRUNTIME_FUNCTION(MaybeObject*, ToBoolean_Patch) { 253569a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch ASSERT(args.length() == 3); 253669a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch 253769a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch HandleScope scope(isolate); 253869a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch Handle<Object> object = args.at<Object>(0); 253969a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch Register tos = Register::from_code(args.smi_at(1)); 254069a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch ToBooleanStub::Types old_types(args.smi_at(2)); 254169a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch 254269a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch ToBooleanStub::Types new_types(old_types); 254369a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch bool to_boolean_value = new_types.Record(object); 254469a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch old_types.TraceTransition(new_types); 254569a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch 254669a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch ToBooleanStub stub(tos, new_types); 254769a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch Handle<Code> code = stub.GetCode(); 254869a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch ToBooleanIC ic(isolate); 254969a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch ic.patch(*code); 255069a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch return Smi::FromInt(to_boolean_value ? 1 : 0); 255169a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch} 255269a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch 255369a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch 255469a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdochvoid ToBooleanIC::patch(Code* code) { 255569a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch set_target(code); 255669a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch} 255769a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch 255869a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch 255944f0eee88ff00398ff7f715fab053374d808c90dSteve Blockstatic const Address IC_utilities[] = { 2560a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#define ADDR(name) FUNCTION_ADDR(name), 2561a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block IC_UTIL_LIST(ADDR) 2562a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block NULL 2563a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#undef ADDR 2564a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 2565a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2566a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2567a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockAddress IC::AddressFromUtilityId(IC::UtilityId id) { 2568a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return IC_utilities[id]; 2569a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 2570a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2571a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2572a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} } // namespace v8::internal 2573