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// Copyright 2013 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_PROPERTIES_INL_H_
#define V8_COMPILER_NODE_PROPERTIES_INL_H_
#include "src/v8.h"
#include "src/compiler/common-operator.h"
#include "src/compiler/generic-node-inl.h"
#include "src/compiler/node-properties.h"
#include "src/compiler/opcodes.h"
#include "src/compiler/operator.h"
#include "src/compiler/operator-properties-inl.h"
#include "src/compiler/operator-properties.h"
namespace v8 {
namespace internal {
namespace compiler {
// -----------------------------------------------------------------------------
// Input layout.
// Inputs are always arranged in order as follows:
// 0 [ values, context, effects, control ] node->InputCount()
inline int NodeProperties::FirstValueIndex(Node* node) { return 0; }
inline int NodeProperties::FirstContextIndex(Node* node) {
return PastValueIndex(node);
}
inline int NodeProperties::FirstFrameStateIndex(Node* node) {
return PastContextIndex(node);
}
inline int NodeProperties::FirstEffectIndex(Node* node) {
return PastFrameStateIndex(node);
}
inline int NodeProperties::FirstControlIndex(Node* node) {
return PastEffectIndex(node);
}
inline int NodeProperties::PastValueIndex(Node* node) {
return FirstValueIndex(node) + node->op()->ValueInputCount();
}
inline int NodeProperties::PastContextIndex(Node* node) {
return FirstContextIndex(node) +
OperatorProperties::GetContextInputCount(node->op());
}
inline int NodeProperties::PastFrameStateIndex(Node* node) {
return FirstFrameStateIndex(node) +
OperatorProperties::GetFrameStateInputCount(node->op());
}
inline int NodeProperties::PastEffectIndex(Node* node) {
return FirstEffectIndex(node) + node->op()->EffectInputCount();
}
inline int NodeProperties::PastControlIndex(Node* node) {
return FirstControlIndex(node) + node->op()->ControlInputCount();
}
// -----------------------------------------------------------------------------
// Input accessors.
inline Node* NodeProperties::GetValueInput(Node* node, int index) {
DCHECK(0 <= index && index < node->op()->ValueInputCount());
return node->InputAt(FirstValueIndex(node) + index);
}
inline Node* NodeProperties::GetContextInput(Node* node) {
DCHECK(OperatorProperties::HasContextInput(node->op()));
return node->InputAt(FirstContextIndex(node));
}
inline Node* NodeProperties::GetFrameStateInput(Node* node) {
DCHECK(OperatorProperties::HasFrameStateInput(node->op()));
return node->InputAt(FirstFrameStateIndex(node));
}
inline Node* NodeProperties::GetEffectInput(Node* node, int index) {
DCHECK(0 <= index && index < node->op()->EffectInputCount());
return node->InputAt(FirstEffectIndex(node) + index);
}
inline Node* NodeProperties::GetControlInput(Node* node, int index) {
DCHECK(0 <= index && index < node->op()->ControlInputCount());
return node->InputAt(FirstControlIndex(node) + index);
}
inline int NodeProperties::GetFrameStateIndex(Node* node) {
DCHECK(OperatorProperties::HasFrameStateInput(node->op()));
return FirstFrameStateIndex(node);
}
// -----------------------------------------------------------------------------
// Edge kinds.
inline bool NodeProperties::IsInputRange(Node::Edge edge, int first, int num) {
// TODO(titzer): edge.index() is linear time;
// edges maybe need to be marked as value/effect/control.
if (num == 0) return false;
int index = edge.index();
return first <= index && index < first + num;
}
inline bool NodeProperties::IsValueEdge(Node::Edge edge) {
Node* node = edge.from();
return IsInputRange(edge, FirstValueIndex(node),
node->op()->ValueInputCount());
}
inline bool NodeProperties::IsContextEdge(Node::Edge edge) {
Node* node = edge.from();
return IsInputRange(edge, FirstContextIndex(node),
OperatorProperties::GetContextInputCount(node->op()));
}
inline bool NodeProperties::IsEffectEdge(Node::Edge edge) {
Node* node = edge.from();
return IsInputRange(edge, FirstEffectIndex(node),
node->op()->EffectInputCount());
}
inline bool NodeProperties::IsControlEdge(Node::Edge edge) {
Node* node = edge.from();
return IsInputRange(edge, FirstControlIndex(node),
node->op()->ControlInputCount());
}
// -----------------------------------------------------------------------------
// Miscellaneous predicates.
inline bool NodeProperties::IsControl(Node* node) {
return IrOpcode::IsControlOpcode(node->opcode());
}
// -----------------------------------------------------------------------------
// Miscellaneous mutators.
inline void NodeProperties::ReplaceControlInput(Node* node, Node* control) {
node->ReplaceInput(FirstControlIndex(node), control);
}
inline void NodeProperties::ReplaceEffectInput(Node* node, Node* effect,
int index) {
DCHECK(index < node->op()->EffectInputCount());
return node->ReplaceInput(FirstEffectIndex(node) + index, effect);
}
inline void NodeProperties::ReplaceFrameStateInput(Node* node,
Node* frame_state) {
DCHECK(OperatorProperties::HasFrameStateInput(node->op()));
node->ReplaceInput(FirstFrameStateIndex(node), frame_state);
}
inline void NodeProperties::RemoveNonValueInputs(Node* node) {
node->TrimInputCount(node->op()->ValueInputCount());
}
// Replace value uses of {node} with {value} and effect uses of {node} with
// {effect}. If {effect == NULL}, then use the effect input to {node}.
inline void NodeProperties::ReplaceWithValue(Node* node, Node* value,
Node* effect) {
DCHECK(node->op()->ControlOutputCount() == 0);
if (effect == NULL && node->op()->EffectInputCount() > 0) {
effect = NodeProperties::GetEffectInput(node);
}
// Requires distinguishing between value and effect edges.
UseIter iter = node->uses().begin();
while (iter != node->uses().end()) {
if (NodeProperties::IsEffectEdge(iter.edge())) {
DCHECK_NE(NULL, effect);
iter = iter.UpdateToAndIncrement(effect);
} else {
iter = iter.UpdateToAndIncrement(value);
}
}
}
// -----------------------------------------------------------------------------
// Type Bounds.
inline bool NodeProperties::IsTyped(Node* node) {
Bounds bounds = node->bounds();
DCHECK((bounds.lower == NULL) == (bounds.upper == NULL));
return bounds.upper != NULL;
}
inline Bounds NodeProperties::GetBounds(Node* node) {
DCHECK(IsTyped(node));
return node->bounds();
}
inline void NodeProperties::SetBounds(Node* node, Bounds b) {
DCHECK(b.lower != NULL && b.upper != NULL);
node->set_bounds(b);
}
inline bool NodeProperties::AllValueInputsAreTyped(Node* node) {
int input_count = node->op()->ValueInputCount();
for (int i = 0; i < input_count; ++i) {
if (!IsTyped(GetValueInput(node, i))) return false;
}
return true;
}
}
}
} // namespace v8::internal::compiler
#endif // V8_COMPILER_NODE_PROPERTIES_INL_H_
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