[turbofan] Add checked load/store operators.

src/compiler/simplified-operator.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/simplified-operator.h"
 
 #include "src/base/lazy-instance.h"
 #include "src/compiler/opcodes.h"
 #include "src/compiler/operator.h"
 #include "src/types-inl.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 std::ostream& operator<<(std::ostream& os, BaseTaggedness base_taggedness) {
   switch (base_taggedness) {
     case kUntaggedBase:
       return os << "untagged base";
     case kTaggedBase:
       return os << "tagged base";
   }
   UNREACHABLE();
   return os;
 }
 
 
+MachineType BufferAccess::machine_type() const {
+  switch (external_array_type_) {
+    case kExternalUint8Array:
+      return kMachUint8;
+    case kExternalInt8Array:
+      return kMachInt8;
+    case kExternalUint16Array:
+      return kMachUint16;
+    case kExternalInt16Array:
+      return kMachInt16;
+    case kExternalUint32Array:
+      return kMachUint32;
+    case kExternalInt32Array:
+      return kMachInt32;
+    case kExternalFloat32Array:
+      return kMachFloat32;
+    case kExternalFloat64Array:
+      return kMachFloat64;
+    case kExternalUint8ClampedArray:
+      break;
+  }
+  UNREACHABLE();
+  return kMachNone;
+}
+
+
+bool operator==(BufferAccess lhs, BufferAccess rhs) {
+  return lhs.external_array_type() == rhs.external_array_type();
+}
+
+
+bool operator!=(BufferAccess lhs, BufferAccess rhs) { return !(lhs == rhs); }
+
+
+size_t hash_value(BufferAccess access) {
+  return base::hash<ExternalArrayType>()(access.external_array_type());
+}
+
+
+std::ostream& operator<<(std::ostream& os, BufferAccess access) {
+  switch (access.external_array_type()) {
+#define TYPED_ARRAY_CASE(Type, type, TYPE, ctype, size) \
+  case kExternal##Type##Array:                          \
+    return os << #Type;
+    TYPED_ARRAYS(TYPED_ARRAY_CASE)
+#undef TYPED_ARRAY_CASE
+  }
+  UNREACHABLE();
+  return os;
+}
+
+
+BufferAccess const BufferAccessOf(const Operator* op) {
+  DCHECK(op->opcode() == IrOpcode::kLoadBuffer ||
+         op->opcode() == IrOpcode::kStoreBuffer);
+  return OpParameter<BufferAccess>(op);
+}
+
+
 bool operator==(FieldAccess const& lhs, FieldAccess const& rhs) {
   return lhs.base_is_tagged == rhs.base_is_tagged && lhs.offset == rhs.offset &&
          lhs.machine_type == rhs.machine_type;
 }
 
 
 bool operator!=(FieldAccess const& lhs, FieldAccess const& rhs) {
   return !(lhs == rhs);
 }
 
@@ skipping 12 matching lines @@
     name->Print(os);
     os << ", ";
   }
 #endif
   access.type->PrintTo(os);
   os << ", " << access.machine_type << "]";
   return os;
 }
 
 
-std::ostream& operator<<(std::ostream& os, BoundsCheckMode bounds_check_mode) {
-  switch (bounds_check_mode) {
-    case kNoBoundsCheck:
-      return os << "no bounds check";
-    case kTypedArrayBoundsCheck:
-      return os << "ignore out of bounds";
-  }
-  UNREACHABLE();
-  return os;
-}
-
-
 bool operator==(ElementAccess const& lhs, ElementAccess const& rhs) {
   return lhs.base_is_tagged == rhs.base_is_tagged &&
          lhs.header_size == rhs.header_size &&
          lhs.machine_type == rhs.machine_type;
 }
 
 
 bool operator!=(ElementAccess const& lhs, ElementAccess const& rhs) {
   return !(lhs == rhs);
 }
 
 
 size_t hash_value(ElementAccess const& access) {
   return base::hash_combine(access.base_is_tagged, access.header_size,
                             access.machine_type);
 }
 
 
 std::ostream& operator<<(std::ostream& os, ElementAccess const& access) {
   os << access.base_is_tagged << ", " << access.header_size << ", ";
   access.type->PrintTo(os);
-  os << ", " << access.machine_type << ", " << access.bounds_check;
+  os << ", " << access.machine_type;
   return os;
 }
 
 
 const FieldAccess& FieldAccessOf(const Operator* op) {
   DCHECK_NOT_NULL(op);
   DCHECK(op->opcode() == IrOpcode::kLoadField ||
          op->opcode() == IrOpcode::kStoreField);
   return OpParameter<FieldAccess>(op);
 }
@@ skipping 39 matching lines @@
 struct SimplifiedOperatorGlobalCache FINAL {
 #define PURE(Name, properties, input_count)                                \
   struct Name##Operator FINAL : public Operator {                          \
     Name##Operator()                                                       \
         : Operator(IrOpcode::k##Name, Operator::kPure | properties, #Name, \
                    input_count, 0, 0, 1, 0, 0) {}                          \
   };                                                                       \
   Name##Operator k##Name;
   PURE_OP_LIST(PURE)
 #undef PURE
+
+#define BUFFER_ACCESS(Type, type, TYPE, ctype, size)                          \
+  struct LoadBuffer##Type##Operator FINAL : public Operator1<BufferAccess> {  \
+    LoadBuffer##Type##Operator()                                              \
+        : Operator1<BufferAccess>(IrOpcode::kLoadBuffer,                      \
+                                  Operator::kNoThrow | Operator::kNoWrite,    \
+                                  "LoadBuffer", 3, 1, 1, 1, 1, 0,             \
+                                  BufferAccess(kExternal##Type##Array)) {}    \
+  };                                                                          \
+  struct StoreBuffer##Type##Operator FINAL : public Operator1<BufferAccess> { \
+    StoreBuffer##Type##Operator()                                             \
+        : Operator1<BufferAccess>(IrOpcode::kStoreBuffer,                     \
+                                  Operator::kNoRead | Operator::kNoThrow,     \
+                                  "StoreBuffer", 4, 1, 1, 0, 1, 0,            \
+                                  BufferAccess(kExternal##Type##Array)) {}    \
+  };                                                                          \
+  LoadBuffer##Type##Operator kLoadBuffer##Type;                               \
+  StoreBuffer##Type##Operator kStoreBuffer##Type;
+  TYPED_ARRAYS(BUFFER_ACCESS)
+#undef BUFFER_ACCESS
 };
 
 
 static base::LazyInstance<SimplifiedOperatorGlobalCache>::type kCache =
     LAZY_INSTANCE_INITIALIZER;
 
 
 SimplifiedOperatorBuilder::SimplifiedOperatorBuilder(Zone* zone)
     : cache_(kCache.Get()), zone_(zone) {}
 
 
 #define PURE(Name, properties, input_count) \
   const Operator* SimplifiedOperatorBuilder::Name() { return &cache_.k##Name; }
 PURE_OP_LIST(PURE)
 #undef PURE
 
 
 const Operator* SimplifiedOperatorBuilder::ReferenceEqual(Type* type) {
   // TODO(titzer): What about the type parameter?
   return new (zone()) Operator(IrOpcode::kReferenceEqual,
                                Operator::kCommutative | Operator::kPure,
                                "ReferenceEqual", 2, 0, 0, 1, 0, 0);
 }
 
 
+const Operator* SimplifiedOperatorBuilder::LoadBuffer(BufferAccess access) {
+  switch (access.external_array_type()) {
+#define LOAD_BUFFER(Type, type, TYPE, ctype, size) \
+  case kExternal##Type##Array:                     \
+    return &cache_.kLoadBuffer##Type;
+    TYPED_ARRAYS(LOAD_BUFFER)
+#undef LOAD_BUFFER
+  }
+  UNREACHABLE();
+  return nullptr;
+}
+
+
+const Operator* SimplifiedOperatorBuilder::StoreBuffer(BufferAccess access) {
+  switch (access.external_array_type()) {
+#define STORE_BUFFER(Type, type, TYPE, ctype, size) \
+  case kExternal##Type##Array:                      \
+    return &cache_.kStoreBuffer##Type;
+    TYPED_ARRAYS(STORE_BUFFER)
+#undef STORE_BUFFER
+  }
+  UNREACHABLE();
+  return nullptr;
+}
+
+
 #define ACCESS_OP_LIST(V)                                    \
   V(LoadField, FieldAccess, Operator::kNoWrite, 1, 1, 1)     \
   V(StoreField, FieldAccess, Operator::kNoRead, 2, 1, 0)     \
-  V(LoadElement, ElementAccess, Operator::kNoWrite, 3, 0, 1) \
-  V(StoreElement, ElementAccess, Operator::kNoRead, 4, 1, 0)
+  V(LoadElement, ElementAccess, Operator::kNoWrite, 2, 1, 1) \
+  V(StoreElement, ElementAccess, Operator::kNoRead, 3, 1, 0)
 
 
 #define ACCESS(Name, Type, properties, value_input_count, control_input_count, \
                output_count)                                                   \
   const Operator* SimplifiedOperatorBuilder::Name(const Type& access) {        \
     return new (zone())                                                        \
         Operator1<Type>(IrOpcode::k##Name, Operator::kNoThrow | properties,    \
                         #Name, value_input_count, 1, control_input_count,      \
                         output_count, 1, 0, access);                           \
   }
 ACCESS_OP_LIST(ACCESS)
 #undef ACCESS
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8