Implement optional turbofan UnalignedLoad and UnalignedStore operators

src/compiler/node-matchers.h

 // Copyright 2014 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.
 
 #ifndef V8_COMPILER_NODE_MATCHERS_H_
 #define V8_COMPILER_NODE_MATCHERS_H_
 
 #include <cmath>
 
 // TODO(turbofan): Move ExternalReference out of assembler.h
@@ skipping 87 matching lines @@
     : NodeMatcher(node), value_(), has_value_(false) {
   if (opcode() == IrOpcode::kInt32Constant) {
     value_ = static_cast<uint32_t>(OpParameter<int32_t>(node));
     has_value_ = true;
   } else if (opcode() == IrOpcode::kInt64Constant) {
     value_ = static_cast<uint64_t>(OpParameter<int64_t>(node));
     has_value_ = true;
   }
 }
 
+template <>
+inline ValueMatcher<
+    uint32_t, IrOpcode::kRelocatableInt32Constant>::ValueMatcher(Node* node)
+    : NodeMatcher(node),
+      value_(),
+      has_value_(opcode() == IrOpcode::kInt32Constant ||
+                 opcode() == IrOpcode::kRelocatableInt32Constant) {
+  if (has_value_) {
+    value_ = static_cast<uint32_t>(OpParameter<int32_t>(node));
+  }
+}
+
+template <>
+inline ValueMatcher<
+    uint64_t, IrOpcode::kRelocatableInt64Constant>::ValueMatcher(Node* node)
+    : NodeMatcher(node), value_(), has_value_(false) {
+  if (opcode() == IrOpcode::kInt32Constant ||
+      opcode() == IrOpcode::kRelocatableInt32Constant) {
+    value_ = static_cast<uint32_t>(OpParameter<int32_t>(node));
+    has_value_ = true;
+  } else if (opcode() == IrOpcode::kInt64Constant ||
+             opcode() == IrOpcode::kRelocatableInt64Constant) {
+    value_ = static_cast<uint64_t>(OpParameter<int64_t>(node));
+    has_value_ = true;
+  }
+}
 
 // A pattern matcher for integer constants.
 template <typename T, IrOpcode::Value kOpcode>
 struct IntMatcher final : public ValueMatcher<T, kOpcode> {
   explicit IntMatcher(Node* node) : ValueMatcher<T, kOpcode>(node) {}
 
   bool Is(const T& value) const {
     return this->HasValue() && this->Value() == value;
   }
   bool IsInRange(const T& low, const T& high) const {
     return this->HasValue() && low <= this->Value() && this->Value() <= high;
   }
   bool IsMultipleOf(T n) const {
     return this->HasValue() && (this->Value() % n) == 0;
   }
   bool IsPowerOf2() const {
     return this->HasValue() && this->Value() > 0 &&
            (this->Value() & (this->Value() - 1)) == 0;
   }
   bool IsNegativePowerOf2() const {
     return this->HasValue() && this->Value() < 0 &&
            (-this->Value() & (-this->Value() - 1)) == 0;
   }
 };
 
 typedef IntMatcher<int32_t, IrOpcode::kInt32Constant> Int32Matcher;
 typedef IntMatcher<uint32_t, IrOpcode::kInt32Constant> Uint32Matcher;
+typedef IntMatcher<uint32_t, IrOpcode::kRelocatableInt32Constant>
+    RelocatableInt32Matcher;
 typedef IntMatcher<int64_t, IrOpcode::kInt64Constant> Int64Matcher;
 typedef IntMatcher<uint64_t, IrOpcode::kInt64Constant> Uint64Matcher;
+typedef IntMatcher<uint64_t, IrOpcode::kRelocatableInt64Constant>
+    RelocatableInt64Matcher;
 #if V8_HOST_ARCH_32_BIT
 typedef Int32Matcher IntPtrMatcher;
 typedef Uint32Matcher UintPtrMatcher;
+typedef RelocatableInt32Matcher PtrMatcher;
 #else
 typedef Int64Matcher IntPtrMatcher;
 typedef Uint64Matcher UintPtrMatcher;
+typedef RelocatableInt64Matcher PtrMatcher;
 #endif
 
 
 // A pattern matcher for floating point constants.
 template <typename T, IrOpcode::Value kOpcode>
 struct FloatMatcher final : public ValueMatcher<T, kOpcode> {
   explicit FloatMatcher(Node* node) : ValueMatcher<T, kOpcode>(node) {}
 
   bool Is(const T& value) const {
     return this->HasValue() && this->Value() == value;
@@ skipping 455 matching lines @@
   Node* branch_;
   Node* if_true_;
   Node* if_false_;
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_NODE_MATCHERS_H_