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effect-control-linearizer.cc
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effect-control-linearizer.cc
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// 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/compiler/effect-control-linearizer.h"
#include "src/code-factory.h"
#include "src/compiler/access-builder.h"
#include "src/compiler/compiler-source-position-table.h"
#include "src/compiler/js-graph.h"
#include "src/compiler/linkage.h"
#include "src/compiler/node-matchers.h"
#include "src/compiler/node-properties.h"
#include "src/compiler/node.h"
#include "src/compiler/schedule.h"
#include "src/factory-inl.h"
namespace v8 {
namespace internal {
namespace compiler {
EffectControlLinearizer::EffectControlLinearizer(
JSGraph* js_graph, Schedule* schedule, Zone* temp_zone,
SourcePositionTable* source_positions,
MaskArrayIndexEnable mask_array_index)
: js_graph_(js_graph),
schedule_(schedule),
temp_zone_(temp_zone),
mask_array_index_(mask_array_index),
source_positions_(source_positions),
graph_assembler_(js_graph, nullptr, nullptr, temp_zone),
frame_state_zapper_(nullptr) {}
Graph* EffectControlLinearizer::graph() const { return js_graph_->graph(); }
CommonOperatorBuilder* EffectControlLinearizer::common() const {
return js_graph_->common();
}
SimplifiedOperatorBuilder* EffectControlLinearizer::simplified() const {
return js_graph_->simplified();
}
MachineOperatorBuilder* EffectControlLinearizer::machine() const {
return js_graph_->machine();
}
namespace {
struct BlockEffectControlData {
Node* current_effect = nullptr; // New effect.
Node* current_control = nullptr; // New control.
Node* current_frame_state = nullptr; // New frame state.
};
class BlockEffectControlMap {
public:
explicit BlockEffectControlMap(Zone* temp_zone) : map_(temp_zone) {}
BlockEffectControlData& For(BasicBlock* from, BasicBlock* to) {
return map_[std::make_pair(from->rpo_number(), to->rpo_number())];
}
const BlockEffectControlData& For(BasicBlock* from, BasicBlock* to) const {
return map_.at(std::make_pair(from->rpo_number(), to->rpo_number()));
}
private:
typedef std::pair<int32_t, int32_t> Key;
typedef ZoneMap<Key, BlockEffectControlData> Map;
Map map_;
};
// Effect phis that need to be updated after the first pass.
struct PendingEffectPhi {
Node* effect_phi;
BasicBlock* block;
PendingEffectPhi(Node* effect_phi, BasicBlock* block)
: effect_phi(effect_phi), block(block) {}
};
void ConnectUnreachableToEnd(Node* effect, Node* control, JSGraph* jsgraph) {
Graph* graph = jsgraph->graph();
CommonOperatorBuilder* common = jsgraph->common();
if (effect->opcode() == IrOpcode::kDead) return;
if (effect->opcode() != IrOpcode::kUnreachable) {
effect = graph->NewNode(common->Unreachable(), effect, control);
}
Node* throw_node = graph->NewNode(common->Throw(), effect, control);
NodeProperties::MergeControlToEnd(graph, common, throw_node);
}
void UpdateEffectPhi(Node* node, BasicBlock* block,
BlockEffectControlMap* block_effects, JSGraph* jsgraph) {
// Update all inputs to an effect phi with the effects from the given
// block->effect map.
DCHECK_EQ(IrOpcode::kEffectPhi, node->opcode());
DCHECK_EQ(static_cast<size_t>(node->op()->EffectInputCount()),
block->PredecessorCount());
for (int i = 0; i < node->op()->EffectInputCount(); i++) {
Node* input = node->InputAt(i);
BasicBlock* predecessor = block->PredecessorAt(static_cast<size_t>(i));
const BlockEffectControlData& block_effect =
block_effects->For(predecessor, block);
Node* effect = block_effect.current_effect;
if (input != effect) {
node->ReplaceInput(i, effect);
}
}
}
void UpdateBlockControl(BasicBlock* block,
BlockEffectControlMap* block_effects) {
Node* control = block->NodeAt(0);
DCHECK(NodeProperties::IsControl(control));
// Do not rewire the end node.
if (control->opcode() == IrOpcode::kEnd) return;
// Update all inputs to the given control node with the correct control.
DCHECK(control->opcode() == IrOpcode::kMerge ||
static_cast<size_t>(control->op()->ControlInputCount()) ==
block->PredecessorCount());
if (static_cast<size_t>(control->op()->ControlInputCount()) !=
block->PredecessorCount()) {
return; // We already re-wired the control inputs of this node.
}
for (int i = 0; i < control->op()->ControlInputCount(); i++) {
Node* input = NodeProperties::GetControlInput(control, i);
BasicBlock* predecessor = block->PredecessorAt(static_cast<size_t>(i));
const BlockEffectControlData& block_effect =
block_effects->For(predecessor, block);
if (input != block_effect.current_control) {
NodeProperties::ReplaceControlInput(control, block_effect.current_control,
i);
}
}
}
bool HasIncomingBackEdges(BasicBlock* block) {
for (BasicBlock* pred : block->predecessors()) {
if (pred->rpo_number() >= block->rpo_number()) {
return true;
}
}
return false;
}
void RemoveRenameNode(Node* node) {
DCHECK(IrOpcode::kFinishRegion == node->opcode() ||
IrOpcode::kBeginRegion == node->opcode() ||
IrOpcode::kTypeGuard == node->opcode());
// Update the value/context uses to the value input of the finish node and
// the effect uses to the effect input.
for (Edge edge : node->use_edges()) {
DCHECK(!edge.from()->IsDead());
if (NodeProperties::IsEffectEdge(edge)) {
edge.UpdateTo(NodeProperties::GetEffectInput(node));
} else {
DCHECK(!NodeProperties::IsControlEdge(edge));
DCHECK(!NodeProperties::IsFrameStateEdge(edge));
edge.UpdateTo(node->InputAt(0));
}
}
node->Kill();
}
void TryCloneBranch(Node* node, BasicBlock* block, Zone* temp_zone,
Graph* graph, CommonOperatorBuilder* common,
BlockEffectControlMap* block_effects,
SourcePositionTable* source_positions) {
DCHECK_EQ(IrOpcode::kBranch, node->opcode());
// This optimization is a special case of (super)block cloning. It takes an
// input graph as shown below and clones the Branch node for every predecessor
// to the Merge, essentially removing the Merge completely. This avoids
// materializing the bit for the Phi and may offer potential for further
// branch folding optimizations (i.e. because one or more inputs to the Phi is
// a constant). Note that there may be more Phi nodes hanging off the Merge,
// but we can only a certain subset of them currently (actually only Phi and
// EffectPhi nodes whose uses have either the IfTrue or IfFalse as control
// input).
// Control1 ... ControlN
// ^ ^
// | | Cond1 ... CondN
// +----+ +----+ ^ ^
// | | | |
// | | +----+ |
// Merge<--+ | +------------+
// ^ \|/
// | Phi
// | |
// Branch----+
// ^
// |
// +-----+-----+
// | |
// IfTrue IfFalse
// ^ ^
// | |
// The resulting graph (modulo the Phi and EffectPhi nodes) looks like this:
// Control1 Cond1 ... ControlN CondN
// ^ ^ ^ ^
// \ / \ /
// Branch ... Branch
// ^ ^
// | |
// +---+---+ +---+----+
// | | | |
// IfTrue IfFalse ... IfTrue IfFalse
// ^ ^ ^ ^
// | | | |
// +--+ +-------------+ |
// | | +--------------+ +--+
// | | | |
// Merge Merge
// ^ ^
// | |
SourcePositionTable::Scope scope(source_positions,
source_positions->GetSourcePosition(node));
Node* branch = node;
Node* cond = NodeProperties::GetValueInput(branch, 0);
if (!cond->OwnedBy(branch) || cond->opcode() != IrOpcode::kPhi) return;
Node* merge = NodeProperties::GetControlInput(branch);
if (merge->opcode() != IrOpcode::kMerge ||
NodeProperties::GetControlInput(cond) != merge) {
return;
}
// Grab the IfTrue/IfFalse projections of the Branch.
BranchMatcher matcher(branch);
// Check/collect other Phi/EffectPhi nodes hanging off the Merge.
NodeVector phis(temp_zone);
for (Node* const use : merge->uses()) {
if (use == branch || use == cond) continue;
// We cannot currently deal with non-Phi/EffectPhi nodes hanging off the
// Merge. Ideally, we would just clone the nodes (and everything that
// depends on it to some distant join point), but that requires knowledge
// about dominance/post-dominance.
if (!NodeProperties::IsPhi(use)) return;
for (Edge edge : use->use_edges()) {
// Right now we can only handle Phi/EffectPhi nodes whose uses are
// directly control-dependend on either the IfTrue or the IfFalse
// successor, because we know exactly how to update those uses.
if (edge.from()->op()->ControlInputCount() != 1) return;
Node* control = NodeProperties::GetControlInput(edge.from());
if (NodeProperties::IsPhi(edge.from())) {
control = NodeProperties::GetControlInput(control, edge.index());
}
if (control != matcher.IfTrue() && control != matcher.IfFalse()) return;
}
phis.push_back(use);
}
BranchHint const hint = BranchHintOf(branch->op());
int const input_count = merge->op()->ControlInputCount();
DCHECK_LE(1, input_count);
Node** const inputs = graph->zone()->NewArray<Node*>(2 * input_count);
Node** const merge_true_inputs = &inputs[0];
Node** const merge_false_inputs = &inputs[input_count];
for (int index = 0; index < input_count; ++index) {
Node* cond1 = NodeProperties::GetValueInput(cond, index);
Node* control1 = NodeProperties::GetControlInput(merge, index);
Node* branch1 = graph->NewNode(common->Branch(hint), cond1, control1);
merge_true_inputs[index] = graph->NewNode(common->IfTrue(), branch1);
merge_false_inputs[index] = graph->NewNode(common->IfFalse(), branch1);
}
Node* const merge_true = matcher.IfTrue();
Node* const merge_false = matcher.IfFalse();
merge_true->TrimInputCount(0);
merge_false->TrimInputCount(0);
for (int i = 0; i < input_count; ++i) {
merge_true->AppendInput(graph->zone(), merge_true_inputs[i]);
merge_false->AppendInput(graph->zone(), merge_false_inputs[i]);
}
DCHECK_EQ(2u, block->SuccessorCount());
NodeProperties::ChangeOp(matcher.IfTrue(), common->Merge(input_count));
NodeProperties::ChangeOp(matcher.IfFalse(), common->Merge(input_count));
int const true_index =
block->SuccessorAt(0)->NodeAt(0) == matcher.IfTrue() ? 0 : 1;
BlockEffectControlData* true_block_data =
&block_effects->For(block, block->SuccessorAt(true_index));
BlockEffectControlData* false_block_data =
&block_effects->For(block, block->SuccessorAt(true_index ^ 1));
for (Node* const phi : phis) {
for (int index = 0; index < input_count; ++index) {
inputs[index] = phi->InputAt(index);
}
inputs[input_count] = merge_true;
Node* phi_true = graph->NewNode(phi->op(), input_count + 1, inputs);
inputs[input_count] = merge_false;
Node* phi_false = graph->NewNode(phi->op(), input_count + 1, inputs);
if (phi->UseCount() == 0) {
DCHECK_EQ(phi->opcode(), IrOpcode::kEffectPhi);
} else {
for (Edge edge : phi->use_edges()) {
Node* control = NodeProperties::GetControlInput(edge.from());
if (NodeProperties::IsPhi(edge.from())) {
control = NodeProperties::GetControlInput(control, edge.index());
}
DCHECK(control == matcher.IfTrue() || control == matcher.IfFalse());
edge.UpdateTo((control == matcher.IfTrue()) ? phi_true : phi_false);
}
}
if (phi->opcode() == IrOpcode::kEffectPhi) {
true_block_data->current_effect = phi_true;
false_block_data->current_effect = phi_false;
}
phi->Kill();
}
// Fix up IfTrue and IfFalse and kill all dead nodes.
if (branch == block->control_input()) {
true_block_data->current_control = merge_true;
false_block_data->current_control = merge_false;
}
branch->Kill();
cond->Kill();
merge->Kill();
}
} // namespace
void EffectControlLinearizer::Run() {
BlockEffectControlMap block_effects(temp_zone());
ZoneVector<PendingEffectPhi> pending_effect_phis(temp_zone());
ZoneVector<BasicBlock*> pending_block_controls(temp_zone());
NodeVector inputs_buffer(temp_zone());
for (BasicBlock* block : *(schedule()->rpo_order())) {
size_t instr = 0;
// The control node should be the first.
Node* control = block->NodeAt(instr);
DCHECK(NodeProperties::IsControl(control));
// Update the control inputs.
if (HasIncomingBackEdges(block)) {
// If there are back edges, we need to update later because we have not
// computed the control yet. This should only happen for loops.
DCHECK_EQ(IrOpcode::kLoop, control->opcode());
pending_block_controls.push_back(block);
} else {
// If there are no back edges, we can update now.
UpdateBlockControl(block, &block_effects);
}
instr++;
// Iterate over the phis and update the effect phis.
Node* effect_phi = nullptr;
Node* terminate = nullptr;
for (; instr < block->NodeCount(); instr++) {
Node* node = block->NodeAt(instr);
// Only go through the phis and effect phis.
if (node->opcode() == IrOpcode::kEffectPhi) {
// There should be at most one effect phi in a block.
DCHECK_NULL(effect_phi);
// IfException blocks should not have effect phis.
DCHECK_NE(IrOpcode::kIfException, control->opcode());
effect_phi = node;
} else if (node->opcode() == IrOpcode::kPhi) {
// Just skip phis.
} else if (node->opcode() == IrOpcode::kTerminate) {
DCHECK_NULL(terminate);
terminate = node;
} else {
break;
}
}
if (effect_phi) {
// Make sure we update the inputs to the incoming blocks' effects.
if (HasIncomingBackEdges(block)) {
// In case of loops, we do not update the effect phi immediately
// because the back predecessor has not been handled yet. We just
// record the effect phi for later processing.
pending_effect_phis.push_back(PendingEffectPhi(effect_phi, block));
} else {
UpdateEffectPhi(effect_phi, block, &block_effects, jsgraph());
}
}
Node* effect = effect_phi;
if (effect == nullptr) {
// There was no effect phi.
// Since a loop should have at least a StackCheck, only loops in
// unreachable code can have no effect phi.
DCHECK_IMPLIES(
HasIncomingBackEdges(block),
block_effects.For(block->PredecessorAt(0), block)
.current_effect->opcode() == IrOpcode::kUnreachable);
if (block == schedule()->start()) {
// Start block => effect is start.
DCHECK_EQ(graph()->start(), control);
effect = graph()->start();
} else if (control->opcode() == IrOpcode::kEnd) {
// End block is just a dummy, no effect needed.
DCHECK_EQ(BasicBlock::kNone, block->control());
DCHECK_EQ(1u, block->size());
effect = nullptr;
} else {
// If all the predecessors have the same effect, we can use it as our
// current effect.
for (size_t i = 0; i < block->PredecessorCount(); ++i) {
const BlockEffectControlData& data =
block_effects.For(block->PredecessorAt(i), block);
if (!effect) effect = data.current_effect;
if (data.current_effect != effect) {
effect = nullptr;
break;
}
}
if (effect == nullptr) {
DCHECK_NE(IrOpcode::kIfException, control->opcode());
// The input blocks do not have the same effect. We have
// to create an effect phi node.
inputs_buffer.clear();
inputs_buffer.resize(block->PredecessorCount(), jsgraph()->Dead());
inputs_buffer.push_back(control);
effect = graph()->NewNode(
common()->EffectPhi(static_cast<int>(block->PredecessorCount())),
static_cast<int>(inputs_buffer.size()), &(inputs_buffer.front()));
// For loops, we update the effect phi node later to break cycles.
if (control->opcode() == IrOpcode::kLoop) {
pending_effect_phis.push_back(PendingEffectPhi(effect, block));
} else {
UpdateEffectPhi(effect, block, &block_effects, jsgraph());
}
} else if (control->opcode() == IrOpcode::kIfException) {
// The IfException is connected into the effect chain, so we need
// to update the effect here.
NodeProperties::ReplaceEffectInput(control, effect);
effect = control;
}
}
}
// Fixup the Terminate node.
if (terminate != nullptr) {
NodeProperties::ReplaceEffectInput(terminate, effect);
}
// The frame state at block entry is determined by the frame states leaving
// all predecessors. In case there is no frame state dominating this block,
// we can rely on a checkpoint being present before the next deoptimization.
// TODO(mstarzinger): Eventually we will need to go hunt for a frame state
// once deoptimizing nodes roam freely through the schedule.
Node* frame_state = nullptr;
if (block != schedule()->start()) {
// If all the predecessors have the same effect, we can use it
// as our current effect.
frame_state =
block_effects.For(block->PredecessorAt(0), block).current_frame_state;
for (size_t i = 1; i < block->PredecessorCount(); i++) {
if (block_effects.For(block->PredecessorAt(i), block)
.current_frame_state != frame_state) {
frame_state = nullptr;
frame_state_zapper_ = graph()->end();
break;
}
}
}
// Process the ordinary instructions.
for (; instr < block->NodeCount(); instr++) {
Node* node = block->NodeAt(instr);
ProcessNode(node, &frame_state, &effect, &control);
}
switch (block->control()) {
case BasicBlock::kGoto:
case BasicBlock::kNone:
break;
case BasicBlock::kCall:
case BasicBlock::kTailCall:
case BasicBlock::kSwitch:
case BasicBlock::kReturn:
case BasicBlock::kDeoptimize:
case BasicBlock::kThrow:
ProcessNode(block->control_input(), &frame_state, &effect, &control);
break;
case BasicBlock::kBranch:
ProcessNode(block->control_input(), &frame_state, &effect, &control);
TryCloneBranch(block->control_input(), block, temp_zone(), graph(),
common(), &block_effects, source_positions_);
break;
}
// Store the effect, control and frame state for later use.
for (BasicBlock* successor : block->successors()) {
BlockEffectControlData* data = &block_effects.For(block, successor);
if (data->current_effect == nullptr) {
data->current_effect = effect;
}
if (data->current_control == nullptr) {
data->current_control = control;
}
data->current_frame_state = frame_state;
}
}
for (BasicBlock* pending_block_control : pending_block_controls) {
UpdateBlockControl(pending_block_control, &block_effects);
}
// Update the incoming edges of the effect phis that could not be processed
// during the first pass (because they could have incoming back edges).
for (const PendingEffectPhi& pending_effect_phi : pending_effect_phis) {
UpdateEffectPhi(pending_effect_phi.effect_phi, pending_effect_phi.block,
&block_effects, jsgraph());
}
}
void EffectControlLinearizer::ProcessNode(Node* node, Node** frame_state,
Node** effect, Node** control) {
SourcePositionTable::Scope scope(source_positions_,
source_positions_->GetSourcePosition(node));
// If the node needs to be wired into the effect/control chain, do this
// here. Pass current frame state for lowering to eager deoptimization.
if (TryWireInStateEffect(node, *frame_state, effect, control)) {
return;
}
// If the node has a visible effect, then there must be a checkpoint in the
// effect chain before we are allowed to place another eager deoptimization
// point. We zap the frame state to ensure this invariant is maintained.
if (region_observability_ == RegionObservability::kObservable &&
!node->op()->HasProperty(Operator::kNoWrite)) {
*frame_state = nullptr;
frame_state_zapper_ = node;
}
// Remove the end markers of 'atomic' allocation region because the
// region should be wired-in now.
if (node->opcode() == IrOpcode::kFinishRegion) {
// Reset the current region observability.
region_observability_ = RegionObservability::kObservable;
// Update the value uses to the value input of the finish node and
// the effect uses to the effect input.
return RemoveRenameNode(node);
}
if (node->opcode() == IrOpcode::kBeginRegion) {
// Determine the observability for this region and use that for all
// nodes inside the region (i.e. ignore the absence of kNoWrite on
// StoreField and other operators).
DCHECK_NE(RegionObservability::kNotObservable, region_observability_);
region_observability_ = RegionObservabilityOf(node->op());
// Update the value uses to the value input of the finish node and
// the effect uses to the effect input.
return RemoveRenameNode(node);
}
if (node->opcode() == IrOpcode::kTypeGuard) {
return RemoveRenameNode(node);
}
// Special treatment for checkpoint nodes.
if (node->opcode() == IrOpcode::kCheckpoint) {
// Unlink the check point; effect uses will be updated to the incoming
// effect that is passed. The frame state is preserved for lowering.
DCHECK_EQ(RegionObservability::kObservable, region_observability_);
*frame_state = NodeProperties::GetFrameStateInput(node);
return;
}
// The IfSuccess nodes should always start a basic block (and basic block
// start nodes are not handled in the ProcessNode method).
DCHECK_NE(IrOpcode::kIfSuccess, node->opcode());
// If the node takes an effect, replace with the current one.
if (node->op()->EffectInputCount() > 0) {
DCHECK_EQ(1, node->op()->EffectInputCount());
Node* input_effect = NodeProperties::GetEffectInput(node);
if (input_effect != *effect) {
NodeProperties::ReplaceEffectInput(node, *effect);
}
// If the node produces an effect, update our current effect. (However,
// ignore new effect chains started with ValueEffect.)
if (node->op()->EffectOutputCount() > 0) {
DCHECK_EQ(1, node->op()->EffectOutputCount());
*effect = node;
}
} else {
// New effect chain is only started with a Start or ValueEffect node.
DCHECK(node->op()->EffectOutputCount() == 0 ||
node->opcode() == IrOpcode::kStart);
}
// Rewire control inputs.
for (int i = 0; i < node->op()->ControlInputCount(); i++) {
NodeProperties::ReplaceControlInput(node, *control, i);
}
// Update the current control.
if (node->op()->ControlOutputCount() > 0) {
*control = node;
}
// Break the effect chain on {Unreachable} and reconnect to the graph end.
// Mark the following code for deletion by connecting to the {Dead} node.
if (node->opcode() == IrOpcode::kUnreachable) {
ConnectUnreachableToEnd(*effect, *control, jsgraph());
*effect = *control = jsgraph()->Dead();
}
}
bool EffectControlLinearizer::TryWireInStateEffect(Node* node,
Node* frame_state,
Node** effect,
Node** control) {
gasm()->Reset(*effect, *control);
Node* result = nullptr;
switch (node->opcode()) {
case IrOpcode::kChangeBitToTagged:
result = LowerChangeBitToTagged(node);
break;
case IrOpcode::kChangeInt31ToTaggedSigned:
result = LowerChangeInt31ToTaggedSigned(node);
break;
case IrOpcode::kChangeInt32ToTagged:
result = LowerChangeInt32ToTagged(node);
break;
case IrOpcode::kChangeUint32ToTagged:
result = LowerChangeUint32ToTagged(node);
break;
case IrOpcode::kChangeFloat64ToTagged:
result = LowerChangeFloat64ToTagged(node);
break;
case IrOpcode::kChangeFloat64ToTaggedPointer:
result = LowerChangeFloat64ToTaggedPointer(node);
break;
case IrOpcode::kChangeTaggedSignedToInt32:
result = LowerChangeTaggedSignedToInt32(node);
break;
case IrOpcode::kChangeTaggedToBit:
result = LowerChangeTaggedToBit(node);
break;
case IrOpcode::kChangeTaggedToInt32:
result = LowerChangeTaggedToInt32(node);
break;
case IrOpcode::kChangeTaggedToUint32:
result = LowerChangeTaggedToUint32(node);
break;
case IrOpcode::kChangeTaggedToFloat64:
result = LowerChangeTaggedToFloat64(node);
break;
case IrOpcode::kChangeTaggedToTaggedSigned:
result = LowerChangeTaggedToTaggedSigned(node);
break;
case IrOpcode::kTruncateTaggedToBit:
result = LowerTruncateTaggedToBit(node);
break;
case IrOpcode::kTruncateTaggedPointerToBit:
result = LowerTruncateTaggedPointerToBit(node);
break;
case IrOpcode::kTruncateTaggedToFloat64:
result = LowerTruncateTaggedToFloat64(node);
break;
case IrOpcode::kCheckBounds:
result = LowerCheckBounds(node, frame_state);
break;
case IrOpcode::kMaskIndexWithBound:
result = LowerMaskIndexWithBound(node);
break;
case IrOpcode::kCheckMaps:
LowerCheckMaps(node, frame_state);
break;
case IrOpcode::kCompareMaps:
result = LowerCompareMaps(node);
break;
case IrOpcode::kCheckNumber:
result = LowerCheckNumber(node, frame_state);
break;
case IrOpcode::kCheckReceiver:
result = LowerCheckReceiver(node, frame_state);
break;
case IrOpcode::kCheckSymbol:
result = LowerCheckSymbol(node, frame_state);
break;
case IrOpcode::kCheckString:
result = LowerCheckString(node, frame_state);
break;
case IrOpcode::kCheckSeqString:
result = LowerCheckSeqString(node, frame_state);
break;
case IrOpcode::kCheckInternalizedString:
result = LowerCheckInternalizedString(node, frame_state);
break;
case IrOpcode::kCheckIf:
LowerCheckIf(node, frame_state);
break;
case IrOpcode::kCheckedInt32Add:
result = LowerCheckedInt32Add(node, frame_state);
break;
case IrOpcode::kCheckedInt32Sub:
result = LowerCheckedInt32Sub(node, frame_state);
break;
case IrOpcode::kCheckedInt32Div:
result = LowerCheckedInt32Div(node, frame_state);
break;
case IrOpcode::kCheckedInt32Mod:
result = LowerCheckedInt32Mod(node, frame_state);
break;
case IrOpcode::kCheckedUint32Div:
result = LowerCheckedUint32Div(node, frame_state);
break;
case IrOpcode::kCheckedUint32Mod:
result = LowerCheckedUint32Mod(node, frame_state);
break;
case IrOpcode::kCheckedInt32Mul:
result = LowerCheckedInt32Mul(node, frame_state);
break;
case IrOpcode::kCheckedInt32ToTaggedSigned:
result = LowerCheckedInt32ToTaggedSigned(node, frame_state);
break;
case IrOpcode::kCheckedUint32ToInt32:
result = LowerCheckedUint32ToInt32(node, frame_state);
break;
case IrOpcode::kCheckedUint32ToTaggedSigned:
result = LowerCheckedUint32ToTaggedSigned(node, frame_state);
break;
case IrOpcode::kCheckedFloat64ToInt32:
result = LowerCheckedFloat64ToInt32(node, frame_state);
break;
case IrOpcode::kCheckedTaggedSignedToInt32:
if (frame_state == nullptr) {
FATAL("No frame state (zapped by #%d: %s)", frame_state_zapper_->id(),
frame_state_zapper_->op()->mnemonic());
}
result = LowerCheckedTaggedSignedToInt32(node, frame_state);
break;
case IrOpcode::kCheckedTaggedToInt32:
result = LowerCheckedTaggedToInt32(node, frame_state);
break;
case IrOpcode::kCheckedTaggedToFloat64:
result = LowerCheckedTaggedToFloat64(node, frame_state);
break;
case IrOpcode::kCheckedTaggedToTaggedSigned:
result = LowerCheckedTaggedToTaggedSigned(node, frame_state);
break;
case IrOpcode::kCheckedTaggedToTaggedPointer:
result = LowerCheckedTaggedToTaggedPointer(node, frame_state);
break;
case IrOpcode::kTruncateTaggedToWord32:
result = LowerTruncateTaggedToWord32(node);
break;
case IrOpcode::kCheckedTruncateTaggedToWord32:
result = LowerCheckedTruncateTaggedToWord32(node, frame_state);
break;
case IrOpcode::kNumberToString:
result = LowerNumberToString(node);
break;
case IrOpcode::kObjectIsArrayBufferView:
result = LowerObjectIsArrayBufferView(node);
break;
case IrOpcode::kObjectIsBigInt:
result = LowerObjectIsBigInt(node);
break;
case IrOpcode::kObjectIsCallable:
result = LowerObjectIsCallable(node);
break;
case IrOpcode::kObjectIsConstructor:
result = LowerObjectIsConstructor(node);
break;
case IrOpcode::kObjectIsDetectableCallable:
result = LowerObjectIsDetectableCallable(node);
break;
case IrOpcode::kObjectIsMinusZero:
result = LowerObjectIsMinusZero(node);
break;
case IrOpcode::kObjectIsNaN:
result = LowerObjectIsNaN(node);
break;
case IrOpcode::kObjectIsNonCallable:
result = LowerObjectIsNonCallable(node);
break;
case IrOpcode::kObjectIsNumber:
result = LowerObjectIsNumber(node);
break;
case IrOpcode::kObjectIsReceiver:
result = LowerObjectIsReceiver(node);
break;
case IrOpcode::kObjectIsSmi:
result = LowerObjectIsSmi(node);
break;
case IrOpcode::kObjectIsString:
result = LowerObjectIsString(node);
break;
case IrOpcode::kObjectIsSymbol:
result = LowerObjectIsSymbol(node);
break;
case IrOpcode::kObjectIsUndetectable:
result = LowerObjectIsUndetectable(node);
break;
case IrOpcode::kArgumentsFrame:
result = LowerArgumentsFrame(node);
break;
case IrOpcode::kArgumentsLength:
result = LowerArgumentsLength(node);
break;
case IrOpcode::kToBoolean:
result = LowerToBoolean(node);
break;
case IrOpcode::kTypeOf:
result = LowerTypeOf(node);
break;
case IrOpcode::kNewDoubleElements:
result = LowerNewDoubleElements(node);
break;
case IrOpcode::kNewSmiOrObjectElements:
result = LowerNewSmiOrObjectElements(node);
break;
case IrOpcode::kNewArgumentsElements:
result = LowerNewArgumentsElements(node);
break;
case IrOpcode::kNewConsString:
result = LowerNewConsString(node);
break;
case IrOpcode::kArrayBufferWasNeutered:
result = LowerArrayBufferWasNeutered(node);
break;
case IrOpcode::kSameValue:
result = LowerSameValue(node);
break;
case IrOpcode::kDeadValue:
result = LowerDeadValue(node);
break;
case IrOpcode::kStringFromCharCode:
result = LowerStringFromCharCode(node);
break;
case IrOpcode::kStringFromCodePoint:
result = LowerStringFromCodePoint(node);
break;
case IrOpcode::kStringIndexOf:
result = LowerStringIndexOf(node);
break;
case IrOpcode::kStringLength:
result = LowerStringLength(node);
break;
case IrOpcode::kStringToNumber:
result = LowerStringToNumber(node);
break;
case IrOpcode::kStringCharAt:
result = LowerStringCharAt(node);
break;
case IrOpcode::kStringCharCodeAt:
result = LowerStringCharCodeAt(node);
break;
case IrOpcode::kSeqStringCharCodeAt:
result = LowerSeqStringCharCodeAt(node);
break;
case IrOpcode::kStringCodePointAt:
result = LowerStringCodePointAt(node, UnicodeEncodingOf(node->op()));
break;
case IrOpcode::kSeqStringCodePointAt:
result = LowerSeqStringCodePointAt(node, UnicodeEncodingOf(node->op()));
break;
case IrOpcode::kStringToLowerCaseIntl:
result = LowerStringToLowerCaseIntl(node);
break;
case IrOpcode::kStringToUpperCaseIntl:
result = LowerStringToUpperCaseIntl(node);
break;
case IrOpcode::kStringEqual:
result = LowerStringEqual(node);
break;
case IrOpcode::kStringLessThan:
result = LowerStringLessThan(node);
break;
case IrOpcode::kStringLessThanOrEqual:
result = LowerStringLessThanOrEqual(node);
break;
case IrOpcode::kNumberIsFloat64Hole:
result = LowerNumberIsFloat64Hole(node);
break;
case IrOpcode::kCheckFloat64Hole:
result = LowerCheckFloat64Hole(node, frame_state);
break;
case IrOpcode::kCheckNotTaggedHole:
result = LowerCheckNotTaggedHole(node, frame_state);
break;
case IrOpcode::kConvertTaggedHoleToUndefined:
result = LowerConvertTaggedHoleToUndefined(node);
break;
case IrOpcode::kCheckEqualsInternalizedString:
LowerCheckEqualsInternalizedString(node, frame_state);
break;
case IrOpcode::kAllocate:
result = LowerAllocate(node);
break;
case IrOpcode::kCheckEqualsSymbol:
LowerCheckEqualsSymbol(node, frame_state);
break;
case IrOpcode::kPlainPrimitiveToNumber:
result = LowerPlainPrimitiveToNumber(node);
break;
case IrOpcode::kPlainPrimitiveToWord32:
result = LowerPlainPrimitiveToWord32(node);
break;
case IrOpcode::kPlainPrimitiveToFloat64:
result = LowerPlainPrimitiveToFloat64(node);
break;
case IrOpcode::kEnsureWritableFastElements:
result = LowerEnsureWritableFastElements(node);
break;
case IrOpcode::kMaybeGrowFastElements:
result = LowerMaybeGrowFastElements(node, frame_state);
break;
case IrOpcode::kTransitionElementsKind:
LowerTransitionElementsKind(node);
break;
case IrOpcode::kLoadFieldByIndex:
result = LowerLoadFieldByIndex(node);
break;
case IrOpcode::kLoadTypedElement:
result = LowerLoadTypedElement(node);
break;
case IrOpcode::kStoreTypedElement:
LowerStoreTypedElement(node);
break;
case IrOpcode::kStoreSignedSmallElement:
LowerStoreSignedSmallElement(node);
break;
case IrOpcode::kFindOrderedHashMapEntry:
result = LowerFindOrderedHashMapEntry(node);
break;
case IrOpcode::kFindOrderedHashMapEntryForInt32Key:
result = LowerFindOrderedHashMapEntryForInt32Key(node);
break;
case IrOpcode::kTransitionAndStoreNumberElement:
LowerTransitionAndStoreNumberElement(node);
break;
case IrOpcode::kTransitionAndStoreNonNumberElement:
LowerTransitionAndStoreNonNumberElement(node);
break;
case IrOpcode::kTransitionAndStoreElement:
LowerTransitionAndStoreElement(node);
break;
case IrOpcode::kRuntimeAbort:
LowerRuntimeAbort(node);
break;
case IrOpcode::kConvertReceiver:
result = LowerConvertReceiver(node);
break;
case IrOpcode::kFloat64RoundUp:
if (!LowerFloat64RoundUp(node).To(&result)) {
return false;
}
break;
case IrOpcode::kFloat64RoundDown:
if (!LowerFloat64RoundDown(node).To(&result)) {
return false;
}
break;
case IrOpcode::kFloat64RoundTruncate:
if (!LowerFloat64RoundTruncate(node).To(&result)) {
return false;
}
break;
case IrOpcode::kFloat64RoundTiesEven:
if (!LowerFloat64RoundTiesEven(node).To(&result)) {
return false;
}
break;
default:
return false;
}
if ((result ? 1 : 0) != node->op()->ValueOutputCount()) {
FATAL(
"Effect control linearizer lowering of '%s':"
" value output count does not agree.",
node->op()->mnemonic());
}
*effect = gasm()->ExtractCurrentEffect();
*control = gasm()->ExtractCurrentControl();
NodeProperties::ReplaceUses(node, result, *effect, *control);
return true;
}
#define __ gasm()->
Node* EffectControlLinearizer::LowerChangeFloat64ToTagged(Node* node) {
CheckForMinusZeroMode mode = CheckMinusZeroModeOf(node->op());
Node* value = node->InputAt(0);
auto done = __ MakeLabel(MachineRepresentation::kTagged);
auto if_heapnumber = __ MakeDeferredLabel();
auto if_int32 = __ MakeLabel();
Node* value32 = __ RoundFloat64ToInt32(value);
__ GotoIf(__ Float64Equal(value, __ ChangeInt32ToFloat64(value32)),
&if_int32);
__ Goto(&if_heapnumber);
__ Bind(&if_int32);
{