1 // Copyright 2013 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef V8_COMPILER_NODE_PROPERTIES_INL_H_
6 #define V8_COMPILER_NODE_PROPERTIES_INL_H_
10 #include "src/compiler/common-operator.h"
11 #include "src/compiler/generic-node-inl.h"
12 #include "src/compiler/node-properties.h"
13 #include "src/compiler/opcodes.h"
14 #include "src/compiler/operator.h"
15 #include "src/compiler/operator-properties-inl.h"
16 #include "src/compiler/operator-properties.h"
22 // -----------------------------------------------------------------------------
24 // Inputs are always arranged in order as follows:
25 // 0 [ values, context, effects, control ] node->InputCount()
27 inline int NodeProperties::FirstValueIndex(Node* node) { return 0; }
29 inline int NodeProperties::FirstContextIndex(Node* node) {
30 return PastValueIndex(node);
33 inline int NodeProperties::FirstFrameStateIndex(Node* node) {
34 return PastContextIndex(node);
37 inline int NodeProperties::FirstEffectIndex(Node* node) {
38 return PastFrameStateIndex(node);
41 inline int NodeProperties::FirstControlIndex(Node* node) {
42 return PastEffectIndex(node);
46 inline int NodeProperties::PastValueIndex(Node* node) {
47 return FirstValueIndex(node) + node->op()->ValueInputCount();
50 inline int NodeProperties::PastContextIndex(Node* node) {
51 return FirstContextIndex(node) +
52 OperatorProperties::GetContextInputCount(node->op());
55 inline int NodeProperties::PastFrameStateIndex(Node* node) {
56 return FirstFrameStateIndex(node) +
57 OperatorProperties::GetFrameStateInputCount(node->op());
60 inline int NodeProperties::PastEffectIndex(Node* node) {
61 return FirstEffectIndex(node) + node->op()->EffectInputCount();
64 inline int NodeProperties::PastControlIndex(Node* node) {
65 return FirstControlIndex(node) + node->op()->ControlInputCount();
69 // -----------------------------------------------------------------------------
72 inline Node* NodeProperties::GetValueInput(Node* node, int index) {
73 DCHECK(0 <= index && index < node->op()->ValueInputCount());
74 return node->InputAt(FirstValueIndex(node) + index);
77 inline Node* NodeProperties::GetContextInput(Node* node) {
78 DCHECK(OperatorProperties::HasContextInput(node->op()));
79 return node->InputAt(FirstContextIndex(node));
82 inline Node* NodeProperties::GetFrameStateInput(Node* node) {
83 DCHECK(OperatorProperties::HasFrameStateInput(node->op()));
84 return node->InputAt(FirstFrameStateIndex(node));
87 inline Node* NodeProperties::GetEffectInput(Node* node, int index) {
88 DCHECK(0 <= index && index < node->op()->EffectInputCount());
89 return node->InputAt(FirstEffectIndex(node) + index);
92 inline Node* NodeProperties::GetControlInput(Node* node, int index) {
93 DCHECK(0 <= index && index < node->op()->ControlInputCount());
94 return node->InputAt(FirstControlIndex(node) + index);
97 inline int NodeProperties::GetFrameStateIndex(Node* node) {
98 DCHECK(OperatorProperties::HasFrameStateInput(node->op()));
99 return FirstFrameStateIndex(node);
102 // -----------------------------------------------------------------------------
105 inline bool NodeProperties::IsInputRange(Node::Edge edge, int first, int num) {
106 // TODO(titzer): edge.index() is linear time;
107 // edges maybe need to be marked as value/effect/control.
108 if (num == 0) return false;
109 int index = edge.index();
110 return first <= index && index < first + num;
113 inline bool NodeProperties::IsValueEdge(Node::Edge edge) {
114 Node* node = edge.from();
115 return IsInputRange(edge, FirstValueIndex(node),
116 node->op()->ValueInputCount());
119 inline bool NodeProperties::IsContextEdge(Node::Edge edge) {
120 Node* node = edge.from();
121 return IsInputRange(edge, FirstContextIndex(node),
122 OperatorProperties::GetContextInputCount(node->op()));
125 inline bool NodeProperties::IsEffectEdge(Node::Edge edge) {
126 Node* node = edge.from();
127 return IsInputRange(edge, FirstEffectIndex(node),
128 node->op()->EffectInputCount());
131 inline bool NodeProperties::IsControlEdge(Node::Edge edge) {
132 Node* node = edge.from();
133 return IsInputRange(edge, FirstControlIndex(node),
134 node->op()->ControlInputCount());
138 // -----------------------------------------------------------------------------
139 // Miscellaneous predicates.
141 inline bool NodeProperties::IsControl(Node* node) {
142 return IrOpcode::IsControlOpcode(node->opcode());
146 // -----------------------------------------------------------------------------
147 // Miscellaneous mutators.
149 inline void NodeProperties::ReplaceControlInput(Node* node, Node* control) {
150 node->ReplaceInput(FirstControlIndex(node), control);
153 inline void NodeProperties::ReplaceEffectInput(Node* node, Node* effect,
155 DCHECK(index < node->op()->EffectInputCount());
156 return node->ReplaceInput(FirstEffectIndex(node) + index, effect);
159 inline void NodeProperties::ReplaceFrameStateInput(Node* node,
161 DCHECK(OperatorProperties::HasFrameStateInput(node->op()));
162 node->ReplaceInput(FirstFrameStateIndex(node), frame_state);
165 inline void NodeProperties::RemoveNonValueInputs(Node* node) {
166 node->TrimInputCount(node->op()->ValueInputCount());
170 // Replace value uses of {node} with {value} and effect uses of {node} with
171 // {effect}. If {effect == NULL}, then use the effect input to {node}.
172 inline void NodeProperties::ReplaceWithValue(Node* node, Node* value,
174 DCHECK(node->op()->ControlOutputCount() == 0);
175 if (effect == NULL && node->op()->EffectInputCount() > 0) {
176 effect = NodeProperties::GetEffectInput(node);
179 // Requires distinguishing between value and effect edges.
180 UseIter iter = node->uses().begin();
181 while (iter != node->uses().end()) {
182 if (NodeProperties::IsEffectEdge(iter.edge())) {
183 DCHECK_NE(NULL, effect);
184 iter = iter.UpdateToAndIncrement(effect);
186 iter = iter.UpdateToAndIncrement(value);
192 // -----------------------------------------------------------------------------
195 inline bool NodeProperties::IsTyped(Node* node) {
196 Bounds bounds = node->bounds();
197 DCHECK((bounds.lower == NULL) == (bounds.upper == NULL));
198 return bounds.upper != NULL;
201 inline Bounds NodeProperties::GetBounds(Node* node) {
202 DCHECK(IsTyped(node));
203 return node->bounds();
206 inline void NodeProperties::SetBounds(Node* node, Bounds b) {
207 DCHECK(b.lower != NULL && b.upper != NULL);
211 inline bool NodeProperties::AllValueInputsAreTyped(Node* node) {
212 int input_count = node->op()->ValueInputCount();
213 for (int i = 0; i < input_count; ++i) {
214 if (!IsTyped(GetValueInput(node, i))) return false;
222 } // namespace v8::internal::compiler
224 #endif // V8_COMPILER_NODE_PROPERTIES_INL_H_