ic-compiler-x87.cc revision 958fae7ec3f466955f8e5b50fa5b8d38b9e91675 
1// Copyright 2012 the V8 project authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "src/v8.h"
6
7#if V8_TARGET_ARCH_X87
8
9#include "src/ic/ic.h"
10#include "src/ic/ic-compiler.h"
11
12namespace v8 {
13namespace internal {
14
15#define __ ACCESS_MASM(masm)
16
17
18void PropertyICCompiler::GenerateRuntimeSetProperty(MacroAssembler* masm,
19                                                    StrictMode strict_mode) {
20  // Return address is on the stack.
21  DCHECK(!ebx.is(StoreDescriptor::ReceiverRegister()) &&
22         !ebx.is(StoreDescriptor::NameRegister()) &&
23         !ebx.is(StoreDescriptor::ValueRegister()));
24  __ pop(ebx);
25  __ push(StoreDescriptor::ReceiverRegister());
26  __ push(StoreDescriptor::NameRegister());
27  __ push(StoreDescriptor::ValueRegister());
28  __ push(Immediate(Smi::FromInt(strict_mode)));
29  __ push(ebx);  // return address
30
31  // Do tail-call to runtime routine.
32  __ TailCallRuntime(Runtime::kSetProperty, 4, 1);
33}
34
35
36#undef __
37#define __ ACCESS_MASM(masm())
38
39Handle<Code> PropertyICCompiler::CompilePolymorphic(TypeHandleList* types,
40                                                    CodeHandleList* handlers,
41                                                    Handle<Name> name,
42                                                    Code::StubType type,
43                                                    IcCheckType check) {
44  Label miss;
45
46  if (check == PROPERTY &&
47      (kind() == Code::KEYED_STORE_IC || kind() == Code::KEYED_LOAD_IC)) {
48    // In case we are compiling an IC for dictionary loads or stores, just
49    // check whether the name is unique.
50    if (name.is_identical_to(isolate()->factory()->normal_ic_symbol())) {
51      // Keyed loads with dictionaries shouldn't be here, they go generic.
52      // The DCHECK is to protect assumptions when --vector-ics is on.
53      DCHECK(kind() != Code::KEYED_LOAD_IC);
54      Register tmp = scratch1();
55      __ JumpIfSmi(this->name(), &miss);
56      __ mov(tmp, FieldOperand(this->name(), HeapObject::kMapOffset));
57      __ movzx_b(tmp, FieldOperand(tmp, Map::kInstanceTypeOffset));
58      __ JumpIfNotUniqueNameInstanceType(tmp, &miss);
59    } else {
60      __ cmp(this->name(), Immediate(name));
61      __ j(not_equal, &miss);
62    }
63  }
64
65  Label number_case;
66  Label* smi_target = IncludesNumberType(types) ? &number_case : &miss;
67  __ JumpIfSmi(receiver(), smi_target);
68
69  // Polymorphic keyed stores may use the map register
70  Register map_reg = scratch1();
71  DCHECK(kind() != Code::KEYED_STORE_IC ||
72         map_reg.is(ElementTransitionAndStoreDescriptor::MapRegister()));
73  __ mov(map_reg, FieldOperand(receiver(), HeapObject::kMapOffset));
74  int receiver_count = types->length();
75  int number_of_handled_maps = 0;
76  for (int current = 0; current < receiver_count; ++current) {
77    Handle<HeapType> type = types->at(current);
78    Handle<Map> map = IC::TypeToMap(*type, isolate());
79    if (!map->is_deprecated()) {
80      number_of_handled_maps++;
81      Handle<WeakCell> cell = Map::WeakCellForMap(map);
82      __ CmpWeakValue(map_reg, cell, scratch2());
83      if (type->Is(HeapType::Number())) {
84        DCHECK(!number_case.is_unused());
85        __ bind(&number_case);
86      }
87      __ j(equal, handlers->at(current));
88    }
89  }
90  DCHECK(number_of_handled_maps != 0);
91
92  __ bind(&miss);
93  TailCallBuiltin(masm(), MissBuiltin(kind()));
94
95  // Return the generated code.
96  InlineCacheState state =
97      number_of_handled_maps > 1 ? POLYMORPHIC : MONOMORPHIC;
98  return GetCode(kind(), type, name, state);
99}
100
101
102Handle<Code> PropertyICCompiler::CompileKeyedStorePolymorphic(
103    MapHandleList* receiver_maps, CodeHandleList* handler_stubs,
104    MapHandleList* transitioned_maps) {
105  Label miss;
106  __ JumpIfSmi(receiver(), &miss, Label::kNear);
107  Register map_reg = scratch1();
108  __ mov(map_reg, FieldOperand(receiver(), HeapObject::kMapOffset));
109  for (int i = 0; i < receiver_maps->length(); ++i) {
110    Handle<WeakCell> cell = Map::WeakCellForMap(receiver_maps->at(i));
111    __ CmpWeakValue(map_reg, cell, scratch2());
112    if (transitioned_maps->at(i).is_null()) {
113      __ j(equal, handler_stubs->at(i));
114    } else {
115      Label next_map;
116      __ j(not_equal, &next_map, Label::kNear);
117      Handle<WeakCell> cell = Map::WeakCellForMap(transitioned_maps->at(i));
118      __ LoadWeakValue(transition_map(), cell, &miss);
119      __ jmp(handler_stubs->at(i), RelocInfo::CODE_TARGET);
120      __ bind(&next_map);
121    }
122  }
123  __ bind(&miss);
124  TailCallBuiltin(masm(), MissBuiltin(kind()));
125
126  // Return the generated code.
127  return GetCode(kind(), Code::NORMAL, factory()->empty_string(), POLYMORPHIC);
128}
129
130
131#undef __
132}
133}  // namespace v8::internal
134
135#endif  // V8_TARGET_ARCH_X87
136