[WIP] TrapHandler 2014/11/27.

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"
@@ skipping 39 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;
+const FieldAccess& FieldAccessOf(const Operator* op) {
+  DCHECK_NOT_NULL(op);
+  DCHECK(op->opcode() == IrOpcode::kLoadField ||
+         op->opcode() == IrOpcode::kStoreField);
+  return OpParameter<FieldAccess>(op);
 }
 
 
 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);
-}
-
-
 const ElementAccess& ElementAccessOf(const Operator* op) {
   DCHECK_NOT_NULL(op);
   DCHECK(op->opcode() == IrOpcode::kLoadElement ||
          op->opcode() == IrOpcode::kStoreElement);
   return OpParameter<ElementAccess>(op);
 }
 
 
+MachineType BufferAccess::machine_type() const {
+  switch (external_array_type()) {
+    case kExternalInt8Array:
+      return kMachInt8;
+    case kExternalUint8Array:
+    case kExternalUint8ClampedArray:
+      return kMachUint8;
+    case kExternalInt16Array:
+      return kMachInt16;
+    case kExternalUint16Array:
+      return kMachUint16;
+    case kExternalInt32Array:
+      return kMachInt32;
+    case kExternalUint32Array:
+      return kMachUint32;
+    case kExternalFloat32Array:
+      return kMachFloat32;
+    case kExternalFloat64Array:
+      return kMachFloat64;
+  }
+  UNREACHABLE();
+  return kMachNone;
+}
+
+
+bool operator==(BufferAccess const& lhs, BufferAccess const& rhs) {
+  return lhs.external_array_type() == rhs.external_array_type() &&
+         lhs.guard_size() == rhs.guard_size();
+}
+
+
+bool operator!=(BufferAccess const& lhs, BufferAccess const& rhs) {
+  return !(lhs == rhs);
+}
+
+
+size_t hash_value(BufferAccess const& access) {
+  return base::hash_combine(access.external_array_type(), access.guard_size());
+}
+
+
+std::ostream& operator<<(std::ostream& os, BufferAccess const& access) {
+  switch (access.external_array_type()) {
+#define CASE(Type, type, TYPE, c_type, element_size) \
+  case kExternal##Type##Array:                       \
+    os << #Type;                                     \
+    break;
+    TYPED_ARRAYS(CASE)
+#undef CASE
+  }
+  if (access.guard_size()) {
+    os << "#" << access.guard_size();
+  }
+  return os;
+}
+
+
+BufferAccess const& BufferAccessOf(const Operator* op) {
+  DCHECK(op->opcode() == IrOpcode::kLoadBuffer ||
+         op->opcode() == IrOpcode::kStoreBuffer);
+  return OpParameter<BufferAccess>(op);
+}
+
+
 #define PURE_OP_LIST(V)                                \
   V(BooleanNot, Operator::kNoProperties, 1)            \
   V(BooleanToNumber, Operator::kNoProperties, 1)       \
   V(NumberEqual, Operator::kCommutative, 2)            \
   V(NumberLessThan, Operator::kNoProperties, 2)        \
   V(NumberLessThanOrEqual, Operator::kNoProperties, 2) \
   V(NumberAdd, Operator::kCommutative, 2)              \
   V(NumberSubtract, Operator::kNoProperties, 2)        \
   V(NumberMultiply, Operator::kCommutative, 2)         \
   V(NumberDivide, Operator::kNoProperties, 2)          \
@@ skipping 47 matching lines @@
   // TODO(titzer): What about the type parameter?
   return new (zone()) Operator(IrOpcode::kReferenceEqual,
                                Operator::kCommutative | Operator::kPure,
                                "ReferenceEqual", 2, 0, 0, 1, 0, 0);
 }
 
 
 #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) \
+  V(LoadBuffer, BufferAccess, Operator::kNoWrite, 3, 1, 1)   \
+  V(StoreBuffer, BufferAccess, Operator::kNoRead, 4, 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
 
+
+const Operator* SimplifiedOperatorBuilder::BoundsCheck(size_t guard) {
+  return new (zone()) Operator1<size_t>(IrOpcode::kBoundsCheck, Operator::kPure,
+                                        "BoundsCheck", 2, 0, 0, 1, 0, 0, guard);
+}
+
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8