Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 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 | #ifndef V8_IC_INL_H_ |
| 6 | #define V8_IC_INL_H_ |
| 7 | |
| 8 | #include "src/ic/ic.h" |
| 9 | |
| 10 | #include "src/compiler.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 11 | #include "src/debug/debug.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 12 | #include "src/macro-assembler.h" |
| 13 | #include "src/prototype.h" |
| 14 | |
| 15 | namespace v8 { |
| 16 | namespace internal { |
| 17 | |
| 18 | |
| 19 | Address IC::address() const { |
| 20 | // Get the address of the call. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 21 | return Assembler::target_address_from_return_address(pc()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 22 | } |
| 23 | |
| 24 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 25 | Address IC::constant_pool() const { |
| 26 | if (FLAG_enable_embedded_constant_pool) { |
| 27 | return raw_constant_pool(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 28 | } else { |
| 29 | return NULL; |
| 30 | } |
| 31 | } |
| 32 | |
| 33 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 34 | Address IC::raw_constant_pool() const { |
| 35 | if (FLAG_enable_embedded_constant_pool) { |
| 36 | return *constant_pool_address_; |
| 37 | } else { |
| 38 | return NULL; |
| 39 | } |
| 40 | } |
| 41 | |
| 42 | |
| 43 | Code* IC::GetTargetAtAddress(Address address, Address constant_pool) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 44 | // Get the target address of the IC. |
| 45 | Address target = Assembler::target_address_at(address, constant_pool); |
| 46 | // Convert target address to the code object. Code::GetCodeFromTargetAddress |
| 47 | // is safe for use during GC where the map might be marked. |
| 48 | Code* result = Code::GetCodeFromTargetAddress(target); |
| 49 | DCHECK(result->is_inline_cache_stub()); |
| 50 | return result; |
| 51 | } |
| 52 | |
| 53 | |
| 54 | void IC::SetTargetAtAddress(Address address, Code* target, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 55 | Address constant_pool) { |
| 56 | if (AddressIsDeoptimizedCode(target->GetIsolate(), address)) return; |
| 57 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 58 | DCHECK(target->is_inline_cache_stub() || target->is_compare_ic_stub()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 59 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 60 | DCHECK(!target->is_inline_cache_stub() || |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 61 | (target->kind() != Code::LOAD_IC && |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 62 | target->kind() != Code::KEYED_LOAD_IC && |
| 63 | target->kind() != Code::CALL_IC && target->kind() != Code::STORE_IC && |
| 64 | target->kind() != Code::KEYED_STORE_IC)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 65 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 66 | Heap* heap = target->GetHeap(); |
| 67 | Code* old_target = GetTargetAtAddress(address, constant_pool); |
| 68 | #ifdef DEBUG |
| 69 | // STORE_IC and KEYED_STORE_IC use Code::extra_ic_state() to mark |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 70 | // ICs as language mode. The language mode of the IC must be preserved. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 71 | if (old_target->kind() == Code::STORE_IC || |
| 72 | old_target->kind() == Code::KEYED_STORE_IC) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 73 | DCHECK(StoreICState::GetLanguageMode(old_target->extra_ic_state()) == |
| 74 | StoreICState::GetLanguageMode(target->extra_ic_state())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 75 | } |
| 76 | #endif |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 77 | Assembler::set_target_address_at(heap->isolate(), address, constant_pool, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 78 | target->instruction_start()); |
| 79 | if (heap->gc_state() == Heap::MARK_COMPACT) { |
| 80 | heap->mark_compact_collector()->RecordCodeTargetPatch(address, target); |
| 81 | } else { |
| 82 | heap->incremental_marking()->RecordCodeTargetPatch(address, target); |
| 83 | } |
| 84 | PostPatching(address, target, old_target); |
| 85 | } |
| 86 | |
| 87 | |
| 88 | void IC::set_target(Code* code) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 89 | SetTargetAtAddress(address(), code, constant_pool()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 90 | } |
| 91 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 92 | Code* IC::target() const { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 93 | return GetTargetAtAddress(address(), constant_pool()); |
| 94 | } |
| 95 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 96 | Handle<Map> IC::GetHandlerCacheHolder(Handle<Map> receiver_map, |
| 97 | bool receiver_is_holder, Isolate* isolate, |
| 98 | CacheHolderFlag* flag) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 99 | if (receiver_is_holder) { |
| 100 | *flag = kCacheOnReceiver; |
| 101 | return receiver_map; |
| 102 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 103 | Handle<JSFunction> builtin_ctor; |
| 104 | if (Map::GetConstructorFunction(receiver_map, isolate->native_context()) |
| 105 | .ToHandle(&builtin_ctor)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 106 | *flag = kCacheOnPrototypeReceiverIsPrimitive; |
| 107 | return handle(HeapObject::cast(builtin_ctor->instance_prototype())->map()); |
| 108 | } |
| 109 | *flag = receiver_map->is_dictionary_map() |
| 110 | ? kCacheOnPrototypeReceiverIsDictionary |
| 111 | : kCacheOnPrototype; |
| 112 | // Callers must ensure that the prototype is non-null. |
| 113 | return handle(JSObject::cast(receiver_map->prototype())->map()); |
| 114 | } |
| 115 | |
| 116 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 117 | Handle<Map> IC::GetICCacheHolder(Handle<Map> map, Isolate* isolate, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 118 | CacheHolderFlag* flag) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 119 | Handle<JSFunction> builtin_ctor; |
| 120 | if (Map::GetConstructorFunction(map, isolate->native_context()) |
| 121 | .ToHandle(&builtin_ctor)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 122 | *flag = kCacheOnPrototype; |
| 123 | return handle(builtin_ctor->initial_map()); |
| 124 | } |
| 125 | *flag = kCacheOnReceiver; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 126 | return map; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 127 | } |
| 128 | |
| 129 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 130 | Code* IC::get_host() { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 131 | return isolate() |
| 132 | ->inner_pointer_to_code_cache() |
| 133 | ->GetCacheEntry(address()) |
| 134 | ->code; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 135 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 136 | |
| 137 | |
| 138 | bool IC::AddressIsDeoptimizedCode() const { |
| 139 | return AddressIsDeoptimizedCode(isolate(), address()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 140 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 141 | |
| 142 | |
| 143 | bool IC::AddressIsDeoptimizedCode(Isolate* isolate, Address address) { |
| 144 | Code* host = |
| 145 | isolate->inner_pointer_to_code_cache()->GetCacheEntry(address)->code; |
| 146 | return (host->kind() == Code::OPTIMIZED_FUNCTION && |
| 147 | host->marked_for_deoptimization()); |
| 148 | } |
| 149 | } // namespace internal |
| 150 | } // namespace v8 |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 151 | |
| 152 | #endif // V8_IC_INL_H_ |