Add inlining for intrinsics.

src/compiler/js-intrinsic-builder.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/access-builder.h"
+#include "src/compiler/common-operator.h"
+#include "src/compiler/generic-node-inl.h"
+#include "src/compiler/js-intrinsic-builder.h"
+#include "src/compiler/js-operator.h"
+#include "src/compiler/simplified-operator.h"
+
+
+namespace v8 {
+namespace internal {
+namespace compiler {
+
+ResultAndEffect JSIntrinsicBuilder::BuildGraphFor(Runtime::FunctionId id,
+                                                  const NodeVector& arguments) {
+  switch (id) {
+    case Runtime::kInlineIsSmi:
+      return BuildGraphFor_IsSmi(arguments);
+    case Runtime::kInlineIsNonNegativeSmi:
+      return BuildGraphFor_IsNonNegativeSmi(arguments);
+    case Runtime::kInlineIsArray:
+      return BuildMapCheck(arguments[0], arguments[2], JS_ARRAY_TYPE);
+    case Runtime::kInlineIsRegExp:
+      return BuildMapCheck(arguments[0], arguments[2], JS_REGEXP_TYPE);
+    case Runtime::kInlineIsFunction:
+      return BuildMapCheck(arguments[0], arguments[2], JS_FUNCTION_TYPE);
+    case Runtime::kInlineValueOf:
+      return BuildGraphFor_ValueOf(arguments);
+    default:
+      break;
+  }
+  return ResultAndEffect();
+}
+
+ResultAndEffect JSIntrinsicBuilder::BuildGraphFor_IsSmi(
+    const NodeVector& arguments) {
+  Node* object = arguments[0];
+  SimplifiedOperatorBuilder simplified(jsgraph_->zone());
+  Node* condition = graph()->NewNode(simplified.IsSmi(), object);
+
+  return ResultAndEffect(condition, arguments[2]);
+}
+
+
+ResultAndEffect JSIntrinsicBuilder::BuildGraphFor_IsNonNegativeSmi(
+    const NodeVector& arguments) {
+  Node* object = arguments[0];
+  SimplifiedOperatorBuilder simplified(jsgraph_->zone());
+  Node* condition = graph()->NewNode(simplified.IsNonNegativeSmi(), object);
+
+  return ResultAndEffect(condition, arguments[2]);
+}
+
+
+/*
+ * if (_isSmi(object)) {
+ *   return false
+ * } else {
+ *   return %_GetMapInstanceType(object) == map_type
+ * }
+ */
+ResultAndEffect JSIntrinsicBuilder::BuildMapCheck(Node* object, Node* effect,
+                                                  InstanceType map_type) {
+  SimplifiedOperatorBuilder simplified(jsgraph_->zone());
+
+  Node* is_smi = graph()->NewNode(simplified.IsSmi(), object);
+  Node* branch = graph()->NewNode(common()->Branch(), is_smi, graph()->start());
+  Node* if_true = graph()->NewNode(common()->IfTrue(), branch);
+  Node* if_false = graph()->NewNode(common()->IfFalse(), branch);
+
+  Node* map = graph()->NewNode(simplified.LoadField(AccessBuilder::ForMap()),
+                               object, effect, if_false);
+
+  Node* instance_type = graph()->NewNode(
+      simplified.LoadField(AccessBuilder::ForMapInstanceType()), map, map,
+      if_false);
+
+  Node* has_map_type =
+      graph()->NewNode(jsgraph_->machine()->Word32Equal(), instance_type,
+                       jsgraph_->Int32Constant(map_type));
+
+  Node* merge = graph()->NewNode(common()->Merge(2), if_true, if_false);
+
+  Node* phi =
+      graph()->NewNode(common()->Phi((MachineType)(kTypeBool | kRepTagged), 2),
+                       jsgraph_->FalseConstant(), has_map_type, merge);
+
+  Node* ephi =
+      graph()->NewNode(common()->EffectPhi(2), effect, instance_type, merge);
+
+  return ResultAndEffect(phi, ephi);
+}
+
+
+/*
+ * if (%_isSmi(object)) {
+ *   return object;
+ * } else if (%_GetMapInstanceType(object) == JS_VALUE_TYPE) {
+ *   return %_LoadValueField(object);
+ * } else {
+ *   return object;
+ * }
+ */
+ResultAndEffect JSIntrinsicBuilder::BuildGraphFor_ValueOf(
+    const NodeVector& arguments) {
+  Node* object = arguments[0];
+  Node* effect = arguments[2];
+  SimplifiedOperatorBuilder simplified(jsgraph_->zone());
+
+  Node* is_smi = graph()->NewNode(simplified.IsSmi(), object);
+  Node* branch = graph()->NewNode(common()->Branch(), is_smi, graph()->start());
+  Node* if_true = graph()->NewNode(common()->IfTrue(), branch);
+  Node* if_false = graph()->NewNode(common()->IfFalse(), branch);
+
+  Node* map = graph()->NewNode(simplified.LoadField(AccessBuilder::ForMap()),
+                               object, effect, if_false);
+
+  Node* instance_type = graph()->NewNode(
+      simplified.LoadField(AccessBuilder::ForMapInstanceType()), map, map,
+      if_false);
+
+  Node* is_value =
+      graph()->NewNode(jsgraph_->machine()->Word32Equal(), instance_type,
+                       jsgraph_->Constant(JS_VALUE_TYPE));
+
+  Node* branch_is_value =
+      graph()->NewNode(common()->Branch(), is_value, if_false);
+  Node* is_value_true = graph()->NewNode(common()->IfTrue(), branch_is_value);
+  Node* is_value_false = graph()->NewNode(common()->IfFalse(), branch_is_value);
+
+  Node* value =
+      graph()->NewNode(simplified.LoadField(AccessBuilder::ForValue()), object,
+                       instance_type, is_value_true);
+
+  Node* merge_is_value =
+      graph()->NewNode(common()->Merge(2), is_value_true, is_value_false);
+
+  Node* phi_is_value = graph()->NewNode(common()->Phi((MachineType)kTypeAny, 2),
+                                        value, object, merge_is_value);
+
+
+  Node* merge = graph()->NewNode(common()->Merge(2), if_true, merge_is_value);
+
+  Node* phi = graph()->NewNode(common()->Phi((MachineType)kTypeAny, 2), object,
+                               phi_is_value, merge);
+
+  Node* ephi =
+      graph()->NewNode(common()->EffectPhi(2), effect, instance_type, merge);
+
+  return ResultAndEffect(phi, ephi);
+}
+}
+}
+}  // namespace v8::internal::compiler