[Interpreter] TurboFan implementation of intrinsics.

src/interpreter/interpreter-intrinsics.cc

+// Copyright 2015 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/interpreter/interpreter-intrinsics.h"
+
+namespace v8 {
+namespace internal {
+namespace interpreter {
+
+using compiler::Node;
+
+#define __ assembler_->
+
+IntrinsicsHelper::IntrinsicsHelper(InterpreterAssembler* assembler)
+    : assembler_(assembler) {}
+
+bool IntrinsicsHelper::IsSupported(Runtime::FunctionId function_id) {
+  switch (function_id) {
+#define SUPPORTED(name, lower_case, count) case Runtime::kInline##name:
+    INTRINSICS_LIST(SUPPORTED)
+    return true;
+#undef SUPPORTED
+    default:
+      return false;
+  }
+}
+
+Node* IntrinsicsHelper::InvokeIntrinsic(Node* function_id, Node* context,
+                                        Node* first_arg_reg, Node* arg_count) {
+  InterpreterAssembler::Label abort(assembler_), end(assembler_);
+  InterpreterAssembler::Variable result(assembler_,
+                                        MachineRepresentation::kTagged);
+
+#define MAKE_LABEL(name, lower_case, count) \
+  InterpreterAssembler::Label lower_case(assembler_);
+  INTRINSICS_LIST(MAKE_LABEL)
+#undef MAKE_LABEL
+
+#define LABEL_POINTER(name, lower_case, count) &lower_case,
+  InterpreterAssembler::Label* labels[] = {INTRINSICS_LIST(LABEL_POINTER)};
+#undef LABEL_POINTER
+
+#define CASE(name, lower_case, count) \
+  static_cast<int32_t>(Runtime::kInline##name),
+  int32_t cases[] = {INTRINSICS_LIST(CASE)};
+#undef CASE
+
+  __ Switch(function_id, &abort, cases, labels, arraysize(cases));
+#define HANDLE_CASE(name, lower_case, expected_arg_count)   \
+  __ Bind(&lower_case);                                     \
+  if (FLAG_debug_code) {                                    \
+    AbortIfArgCountMismatch(expected_arg_count, arg_count); \
+  }                                                         \
+  result.Bind(name(first_arg_reg));                         \
+  __ Goto(&end);
+  INTRINSICS_LIST(HANDLE_CASE)
+#undef HANDLE_CASE
+
+  __ Bind(&abort);
+  __ Abort(BailoutReason::kUnexpectedFunctionIDForInvokeIntrinsic);
+
+  __ Bind(&end);
+  return result.value();
+}
+
+Node* IntrinsicsHelper::CompareInstanceType(Node* map, int type,
+                                            InstanceTypeCompareMode mode) {
+  InterpreterAssembler::Variable return_value(assembler_,
+                                              MachineRepresentation::kTagged);
+  Node* instance_type =
+      __ Load(MachineType::Uint8(), map,
+              __ IntPtrConstant(Map::kInstanceTypeOffset - kHeapObjectTag));
+
+  InterpreterAssembler::Label if_true(assembler_), if_false(assembler_),
+      end(assembler_);
+  Node* condition;
+  if (mode == kInstanceTypeEqual) {
+    condition = __ Word32Equal(instance_type, __ Int32Constant(type));
+  } else {
+    DCHECK(mode == kInstanceTypeGreaterThanOrEqual);
+    condition =
+        __ Int32GreaterThanOrEqual(instance_type, __ Int32Constant(type));
+  }
+  __ Branch(condition, &if_true, &if_false);
+
+  __ Bind(&if_true);
+  return_value.Bind(__ BooleanConstant(true));
+  __ Goto(&end);
+
+  __ Bind(&if_false);
+  return_value.Bind(__ BooleanConstant(false));
+  __ Goto(&end);
+
+  __ Bind(&end);
+  return return_value.value();
+}
+
+Node* IntrinsicsHelper::IsJSReceiver(Node* input) {
+  InterpreterAssembler::Variable return_value(assembler_,
+                                              MachineRepresentation::kTagged);
+
+  InterpreterAssembler::Label if_smi(assembler_), if_not_smi(assembler_),
+      end(assembler_);
+  Node* arg = __ LoadRegister(input);
+
+  __ Branch(__ WordIsSmi(arg), &if_smi, &if_not_smi);
+  __ Bind(&if_smi);
+  return_value.Bind(__ BooleanConstant(false));
+  __ Goto(&end);
+
+  __ Bind(&if_not_smi);
+  STATIC_ASSERT(LAST_TYPE == LAST_JS_RECEIVER_TYPE);
+  Node* map = __ LoadObjectField(arg, HeapObject::kMapOffset);
+  return_value.Bind(CompareInstanceType(map, FIRST_JS_RECEIVER_TYPE,
+                                        kInstanceTypeGreaterThanOrEqual));
+  __ Goto(&end);
+
+  __ Bind(&end);
+  return return_value.value();
+}
+
+Node* IntrinsicsHelper::IsArray(Node* input) {
+  InterpreterAssembler::Label if_smi(assembler_), if_not_smi(assembler_),
+      end(assembler_);
+  Node* arg = __ LoadRegister(input);
+  __ Branch(__ WordIsSmi(arg), &if_smi, &if_not_smi);
+  InterpreterAssembler::Variable return_value(assembler_,
+                                              MachineRepresentation::kTagged);
+  __ Bind(&if_smi);
+  return_value.Bind(__ BooleanConstant(false));
+  __ Goto(&end);
+
+  __ Bind(&if_not_smi);
+  Node* map = __ LoadObjectField(arg, HeapObject::kMapOffset);
+  return_value.Bind(
+      CompareInstanceType(map, JS_ARRAY_TYPE, kInstanceTypeEqual));
+  __ Goto(&end);
+
+  __ Bind(&end);
+  return return_value.value();
+}
+
+void IntrinsicsHelper::AbortIfArgCountMismatch(int expected, Node* actual) {
+  InterpreterAssembler::Label match(assembler_), mismatch(assembler_);
+  Node* comparison = __ Word32Equal(actual, __ Int32Constant(expected));
+  __ Branch(comparison, &match, &mismatch);
+  __ Bind(&mismatch);
+  __ Abort(kWrongArgumentCountForInvokeIntrinsic);
+  __ Bind(&match);
+}
+
+}  // namespace interpreter
+}  // namespace internal
+}  // namespace v8