1// Copyright 2014 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_MIPS
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
18Handle<Code> PropertyICCompiler::CompilePolymorphic(TypeHandleList* types,
19                                                    CodeHandleList* handlers,
20                                                    Handle<Name> name,
21                                                    Code::StubType type,
22                                                    IcCheckType check) {
23  Label miss;
24
25  if (check == PROPERTY &&
26      (kind() == Code::KEYED_LOAD_IC || kind() == Code::KEYED_STORE_IC)) {
27    // In case we are compiling an IC for dictionary loads and stores, just
28    // check whether the name is unique.
29    if (name.is_identical_to(isolate()->factory()->normal_ic_symbol())) {
30      Register tmp = scratch1();
31      __ JumpIfSmi(this->name(), &miss);
32      __ lw(tmp, FieldMemOperand(this->name(), HeapObject::kMapOffset));
33      __ lbu(tmp, FieldMemOperand(tmp, Map::kInstanceTypeOffset));
34      __ JumpIfNotUniqueNameInstanceType(tmp, &miss);
35    } else {
36      __ Branch(&miss, ne, this->name(), Operand(name));
37    }
38  }
39
40  Label number_case;
41  Register match = scratch2();
42  Label* smi_target = IncludesNumberType(types) ? &number_case : &miss;
43  __ JumpIfSmi(receiver(), smi_target, match);  // Reg match is 0 if Smi.
44
45  // Polymorphic keyed stores may use the map register
46  Register map_reg = scratch1();
47  DCHECK(kind() != Code::KEYED_STORE_IC ||
48         map_reg.is(ElementTransitionAndStoreDescriptor::MapRegister()));
49
50  int receiver_count = types->length();
51  int number_of_handled_maps = 0;
52  __ lw(map_reg, FieldMemOperand(receiver(), HeapObject::kMapOffset));
53  for (int current = 0; current < receiver_count; ++current) {
54    Handle<HeapType> type = types->at(current);
55    Handle<Map> map = IC::TypeToMap(*type, isolate());
56    if (!map->is_deprecated()) {
57      number_of_handled_maps++;
58      // Check map and tail call if there's a match.
59      // Separate compare from branch, to provide path for above JumpIfSmi().
60      __ Subu(match, map_reg, Operand(map));
61      if (type->Is(HeapType::Number())) {
62        DCHECK(!number_case.is_unused());
63        __ bind(&number_case);
64      }
65      __ Jump(handlers->at(current), RelocInfo::CODE_TARGET, eq, match,
66              Operand(zero_reg));
67    }
68  }
69  DCHECK(number_of_handled_maps != 0);
70
71  __ bind(&miss);
72  TailCallBuiltin(masm(), MissBuiltin(kind()));
73
74  // Return the generated code.
75  InlineCacheState state =
76      number_of_handled_maps > 1 ? POLYMORPHIC : MONOMORPHIC;
77  return GetCode(kind(), type, name, state);
78}
79
80
81Handle<Code> PropertyICCompiler::CompileKeyedStorePolymorphic(
82    MapHandleList* receiver_maps, CodeHandleList* handler_stubs,
83    MapHandleList* transitioned_maps) {
84  Label miss;
85  __ JumpIfSmi(receiver(), &miss);
86
87  int receiver_count = receiver_maps->length();
88  __ lw(scratch1(), FieldMemOperand(receiver(), HeapObject::kMapOffset));
89  for (int i = 0; i < receiver_count; ++i) {
90    if (transitioned_maps->at(i).is_null()) {
91      __ Jump(handler_stubs->at(i), RelocInfo::CODE_TARGET, eq, scratch1(),
92              Operand(receiver_maps->at(i)));
93    } else {
94      Label next_map;
95      __ Branch(&next_map, ne, scratch1(), Operand(receiver_maps->at(i)));
96      __ li(transition_map(), Operand(transitioned_maps->at(i)));
97      __ Jump(handler_stubs->at(i), RelocInfo::CODE_TARGET);
98      __ bind(&next_map);
99    }
100  }
101
102  __ bind(&miss);
103  TailCallBuiltin(masm(), MissBuiltin(kind()));
104
105  // Return the generated code.
106  return GetCode(kind(), Code::NORMAL, factory()->empty_string(), POLYMORPHIC);
107}
108
109
110#undef __
111#define __ ACCESS_MASM(masm)
112
113
114void PropertyICCompiler::GenerateRuntimeSetProperty(MacroAssembler* masm,
115                                                    StrictMode strict_mode) {
116  __ Push(StoreDescriptor::ReceiverRegister(), StoreDescriptor::NameRegister(),
117          StoreDescriptor::ValueRegister());
118
119  __ li(a0, Operand(Smi::FromInt(strict_mode)));
120  __ Push(a0);
121
122  // Do tail-call to runtime routine.
123  __ TailCallRuntime(Runtime::kSetProperty, 4, 1);
124}
125
126
127#undef __
128}
129}  // namespace v8::internal
130
131#endif  // V8_TARGET_ARCH_MIPS
132