src/v8/src/ic/mips/ic-compiler-mips.cc

   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
  12 namespace v8 {
  13 namespace internal {
  14
  15 #define __ ACCESS_MASM(masm())
  16
  17
  18 Handle<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
  81 Handle<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
 114 void 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