[turbofan] Machine operators are globally shared singletons.

src/compiler/machine-operator.cc

+// 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.
+
+#include "src/compiler/machine-operator.h"
+
+#include "src/base/lazy-instance.h"
+#include "src/compiler/opcodes.h"
+#include "src/compiler/operator.h"
+
+namespace v8 {
+namespace internal {
+namespace compiler {
+
+OStream& operator<<(OStream& os, const WriteBarrierKind& write_barrier_kind) {
+  switch (write_barrier_kind) {
+    case kNoWriteBarrier:
+      return os << "NoWriteBarrier";
+    case kFullWriteBarrier:
+      return os << "FullWriteBarrier";
+  }
+  UNREACHABLE();
+  return os;
+}
+
+
+OStream& operator<<(OStream& os, const StoreRepresentation& rep) {
+  return os << "(" << rep.machine_type() << " : " << rep.write_barrier_kind()
+            << ")";
+}
+
+
+template <>
+struct StaticParameterTraits<StoreRepresentation> {
+  static OStream& PrintTo(OStream& os, const StoreRepresentation& rep) {
+    return os << rep;
+  }
+  static int HashCode(const StoreRepresentation& rep) {
+    return rep.machine_type() + rep.write_barrier_kind();
+  }
+  static bool Equals(const StoreRepresentation& rep1,
+                     const StoreRepresentation& rep2) {
+    return rep1 == rep2;
+  }
+};
+
+
+template <>
+struct StaticParameterTraits<LoadRepresentation> {
+  static OStream& PrintTo(OStream& os, LoadRepresentation type) {  // NOLINT
+    return os << type;
+  }
+  static int HashCode(LoadRepresentation type) { return type; }
+  static bool Equals(LoadRepresentation lhs, LoadRepresentation rhs) {
+    return lhs == rhs;
+  }
+};
+
+
+#define PURE_OP_LIST(V)                                                       \
+  V(Word32And, Operator::kAssociative | Operator::kCommutative, 2, 1)         \
+  V(Word32Or, Operator::kAssociative | Operator::kCommutative, 2, 1)          \
+  V(Word32Xor, Operator::kAssociative | Operator::kCommutative, 2, 1)         \
+  V(Word32Shl, Operator::kNoProperties, 2, 1)                                 \
+  V(Word32Shr, Operator::kNoProperties, 2, 1)                                 \
+  V(Word32Sar, Operator::kNoProperties, 2, 1)                                 \
+  V(Word32Ror, Operator::kNoProperties, 2, 1)                                 \
+  V(Word32Equal, Operator::kCommutative, 2, 1)                                \
+  V(Word64And, Operator::kAssociative | Operator::kCommutative, 2, 1)         \
+  V(Word64Or, Operator::kAssociative | Operator::kCommutative, 2, 1)          \
+  V(Word64Xor, Operator::kAssociative | Operator::kCommutative, 2, 1)         \
+  V(Word64Shl, Operator::kNoProperties, 2, 1)                                 \
+  V(Word64Shr, Operator::kNoProperties, 2, 1)                                 \
+  V(Word64Sar, Operator::kNoProperties, 2, 1)                                 \
+  V(Word64Ror, Operator::kNoProperties, 2, 1)                                 \
+  V(Word64Equal, Operator::kCommutative, 2, 1)                                \
+  V(Int32Add, Operator::kAssociative | Operator::kCommutative, 2, 1)          \
+  V(Int32AddWithOverflow, Operator::kAssociative | Operator::kCommutative, 2, \
+    2)                                                                        \
+  V(Int32Sub, Operator::kNoProperties, 2, 1)                                  \
+  V(Int32SubWithOverflow, Operator::kNoProperties, 2, 2)                      \
+  V(Int32Mul, Operator::kAssociative | Operator::kCommutative, 2, 1)          \
+  V(Int32Div, Operator::kNoProperties, 2, 1)                                  \
+  V(Int32UDiv, Operator::kNoProperties, 2, 1)                                 \
+  V(Int32Mod, Operator::kNoProperties, 2, 1)                                  \
+  V(Int32UMod, Operator::kNoProperties, 2, 1)                                 \
+  V(Int32LessThan, Operator::kNoProperties, 2, 1)                             \
+  V(Int32LessThanOrEqual, Operator::kNoProperties, 2, 1)                      \
+  V(Uint32LessThan, Operator::kNoProperties, 2, 1)                            \
+  V(Uint32LessThanOrEqual, Operator::kNoProperties, 2, 1)                     \
+  V(Int64Add, Operator::kAssociative | Operator::kCommutative, 2, 1)          \
+  V(Int64Sub, Operator::kNoProperties, 2, 1)                                  \
+  V(Int64Mul, Operator::kAssociative | Operator::kCommutative, 2, 1)          \
+  V(Int64Div, Operator::kNoProperties, 2, 1)                                  \
+  V(Int64UDiv, Operator::kNoProperties, 2, 1)                                 \
+  V(Int64Mod, Operator::kNoProperties, 2, 1)                                  \
+  V(Int64UMod, Operator::kNoProperties, 2, 1)                                 \
+  V(Int64LessThan, Operator::kNoProperties, 2, 1)                             \
+  V(Int64LessThanOrEqual, Operator::kNoProperties, 2, 1)                      \
+  V(ChangeFloat64ToInt32, Operator::kNoProperties, 1, 1)                      \
+  V(ChangeFloat64ToUint32, Operator::kNoProperties, 1, 1)                     \
+  V(ChangeInt32ToFloat64, Operator::kNoProperties, 1, 1)                      \
+  V(ChangeInt32ToInt64, Operator::kNoProperties, 1, 1)                        \
+  V(ChangeUint32ToFloat64, Operator::kNoProperties, 1, 1)                     \
+  V(ChangeUint32ToUint64, Operator::kNoProperties, 1, 1)                      \
+  V(TruncateFloat64ToInt32, Operator::kNoProperties, 1, 1)                    \
+  V(TruncateInt64ToInt32, Operator::kNoProperties, 1, 1)                      \
+  V(Float64Add, Operator::kCommutative, 2, 1)                                 \
+  V(Float64Sub, Operator::kNoProperties, 2, 1)                                \
+  V(Float64Mul, Operator::kCommutative, 2, 1)                                 \
+  V(Float64Div, Operator::kNoProperties, 2, 1)                                \
+  V(Float64Mod, Operator::kNoProperties, 2, 1)                                \
+  V(Float64Equal, Operator::kCommutative, 2, 1)                               \
+  V(Float64LessThan, Operator::kNoProperties, 2, 1)                           \
+  V(Float64LessThanOrEqual, Operator::kNoProperties, 2, 1)
+
+
+#define MACHINE_TYPE_LIST(V) \
+  V(MachFloat32)             \
+  V(MachFloat64)             \
+  V(MachInt8)                \
+  V(MachUint8)               \
+  V(MachInt16)               \
+  V(MachUint16)              \
+  V(MachInt32)               \
+  V(MachUint32)              \
+  V(MachInt64)               \
+  V(MachUint64)              \
+  V(MachAnyTagged)           \
+  V(RepBit)                  \
+  V(RepWord8)                \
+  V(RepWord16)               \
+  V(RepWord32)               \
+  V(RepWord64)               \
+  V(RepFloat32)              \
+  V(RepFloat64)              \
+  V(RepTagged)
+
+
+struct MachineOperatorBuilderImpl {
+#define PURE(Name, properties, input_count, output_count)                 \
+  struct Name##Operator FINAL : public SimpleOperator {                   \
+    Name##Operator()                                                      \
+        : SimpleOperator(IrOpcode::k##Name, Operator::kPure | properties, \
+                         input_count, output_count, #Name) {}             \
+  };                                                                      \
+  Name##Operator k##Name;
+  PURE_OP_LIST(PURE)
+#undef PURE
+
+#define LOAD(Type)                                                            \
+  struct Load##Type##Operator FINAL : public Operator1<LoadRepresentation> {  \
+    Load##Type##Operator()                                                    \
+        : Operator1<LoadRepresentation>(                                      \
+              IrOpcode::kLoad, Operator::kNoThrow | Operator::kNoWrite, 2, 1, \
+              "Load", k##Type) {}                                             \
+  };                                                                          \
+  Load##Type##Operator k##Load##Type;
+  MACHINE_TYPE_LIST(LOAD)
+#undef LOAD
+
+#define STORE(Type)                                                           \
+  struct Store##Type##Operator : public Operator1<StoreRepresentation> {      \
+    explicit Store##Type##Operator(WriteBarrierKind write_barrier_kind)       \
+        : Operator1<StoreRepresentation>(                                     \
+              IrOpcode::kStore, Operator::kNoRead | Operator::kNoThrow, 3, 0, \
+              "Store", StoreRepresentation(k##Type, write_barrier_kind)) {}   \
+  };                                                                          \
+  struct Store##Type##NoWriteBarrier##Operator FINAL                          \
+      : public Store##Type##Operator {                                        \
+    Store##Type##NoWriteBarrier##Operator()                                   \
+        : Store##Type##Operator(kNoWriteBarrier) {}                           \
+  };                                                                          \
+  struct Store##Type##FullWriteBarrier##Operator FINAL                        \
+      : public Store##Type##Operator {                                        \
+    Store##Type##FullWriteBarrier##Operator()                                 \
+        : Store##Type##Operator(kFullWriteBarrier) {}                         \
+  };                                                                          \
+  Store##Type##NoWriteBarrier##Operator k##Store##Type##NoWriteBarrier;       \
+  Store##Type##FullWriteBarrier##Operator k##Store##Type##FullWriteBarrier;
+  MACHINE_TYPE_LIST(STORE)
+#undef STORE
+};
+
+
+static base::LazyInstance<MachineOperatorBuilderImpl>::type kImpl =
+    LAZY_INSTANCE_INITIALIZER;
+
+
+MachineOperatorBuilder::MachineOperatorBuilder(MachineType word)
+    : impl_(kImpl.Get()), word_(word) {
+  DCHECK(word == kRepWord32 || word == kRepWord64);
+}
+
+
+#define PURE(Name, properties, input_count, output_count) \
+  const Operator* MachineOperatorBuilder::Name() { return &impl_.k##Name; }
+PURE_OP_LIST(PURE)
+#undef PURE
+
+
+const Operator* MachineOperatorBuilder::Load(LoadRepresentation rep) {
+  switch (rep) {
+#define LOAD(Type) \
+  case k##Type:    \
+    return &impl_.k##Load##Type;
+    MACHINE_TYPE_LIST(LOAD)
+#undef LOAD
+
+    default:
+      break;
+  }
+  UNREACHABLE();
+  return NULL;
+}
+
+
+const Operator* MachineOperatorBuilder::Store(StoreRepresentation rep) {
+  switch (rep.machine_type()) {
+#define STORE(Type)                                     \
+  case k##Type:                                         \
+    switch (rep.write_barrier_kind()) {                 \
+      case kNoWriteBarrier:                             \
+        return &impl_.k##Store##Type##NoWriteBarrier;   \
+      case kFullWriteBarrier:                           \
+        return &impl_.k##Store##Type##FullWriteBarrier; \
+    }                                                   \
+    break;
+    MACHINE_TYPE_LIST(STORE)
+#undef STORE
+
+    default:
+      break;
+  }
+  UNREACHABLE();
+  return NULL;
+}
+
+}  // namespace compiler
+}  // namespace internal
+}  // namespace v8