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// 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/backend/instruction-selector.h"
#include <limits>
#include "src/base/iterator.h"
#include "src/base/platform/wrappers.h"
#include "src/codegen/assembler-inl.h"
#include "src/codegen/interface-descriptors-inl.h"
#include "src/codegen/tick-counter.h"
#include "src/common/globals.h"
#include "src/compiler/backend/instruction-selector-impl.h"
#include "src/compiler/compiler-source-position-table.h"
#include "src/compiler/js-heap-broker.h"
#include "src/compiler/node-matchers.h"
#include "src/compiler/node-properties.h"
#include "src/compiler/pipeline.h"
#include "src/compiler/schedule.h"
#include "src/compiler/state-values-utils.h"
#include "src/deoptimizer/deoptimizer.h"
#if V8_ENABLE_WEBASSEMBLY
#include "src/wasm/simd-shuffle.h"
#endif // V8_ENABLE_WEBASSEMBLY
namespace v8 {
namespace internal {
namespace compiler {
InstructionSelector::InstructionSelector(
Zone* zone, size_t node_count, Linkage* linkage,
InstructionSequence* sequence, Schedule* schedule,
SourcePositionTable* source_positions, Frame* frame,
EnableSwitchJumpTable enable_switch_jump_table, TickCounter* tick_counter,
JSHeapBroker* broker, size_t* max_unoptimized_frame_height,
size_t* max_pushed_argument_count, SourcePositionMode source_position_mode,
Features features, EnableScheduling enable_scheduling,
EnableRootsRelativeAddressing enable_roots_relative_addressing,
EnableTraceTurboJson trace_turbo)
: zone_(zone),
linkage_(linkage),
sequence_(sequence),
source_positions_(source_positions),
source_position_mode_(source_position_mode),
features_(features),
schedule_(schedule),
current_block_(nullptr),
instructions_(zone),
continuation_inputs_(sequence->zone()),
continuation_outputs_(sequence->zone()),
continuation_temps_(sequence->zone()),
defined_(node_count, false, zone),
used_(node_count, false, zone),
effect_level_(node_count, 0, zone),
virtual_registers_(node_count,
InstructionOperand::kInvalidVirtualRegister, zone),
virtual_register_rename_(zone),
scheduler_(nullptr),
enable_scheduling_(enable_scheduling),
enable_roots_relative_addressing_(enable_roots_relative_addressing),
enable_switch_jump_table_(enable_switch_jump_table),
state_values_cache_(zone),
frame_(frame),
instruction_selection_failed_(false),
instr_origins_(sequence->zone()),
trace_turbo_(trace_turbo),
tick_counter_(tick_counter),
broker_(broker),
max_unoptimized_frame_height_(max_unoptimized_frame_height),
max_pushed_argument_count_(max_pushed_argument_count)
#if V8_TARGET_ARCH_64_BIT
,
phi_states_(node_count, Upper32BitsState::kNotYetChecked, zone)
#endif
{
DCHECK_EQ(*max_unoptimized_frame_height, 0); // Caller-initialized.
instructions_.reserve(node_count);
continuation_inputs_.reserve(5);
continuation_outputs_.reserve(2);
if (trace_turbo_ == kEnableTraceTurboJson) {
instr_origins_.assign(node_count, {-1, 0});
}
}
bool InstructionSelector::SelectInstructions() {
// Mark the inputs of all phis in loop headers as used.
BasicBlockVector* blocks = schedule()->rpo_order();
for (auto const block : *blocks) {
if (!block->IsLoopHeader()) continue;
DCHECK_LE(2u, block->PredecessorCount());
for (Node* const phi : *block) {
if (phi->opcode() != IrOpcode::kPhi) continue;
// Mark all inputs as used.
for (Node* const input : phi->inputs()) {
MarkAsUsed(input);
}
}
}
// Visit each basic block in post order.
for (auto i = blocks->rbegin(); i != blocks->rend(); ++i) {
VisitBlock(*i);
if (instruction_selection_failed()) return false;
}
// Schedule the selected instructions.
if (UseInstructionScheduling()) {
scheduler_ = zone()->New<InstructionScheduler>(zone(), sequence());
}
for (auto const block : *blocks) {
InstructionBlock* instruction_block =
sequence()->InstructionBlockAt(RpoNumber::FromInt(block->rpo_number()));
for (size_t i = 0; i < instruction_block->phis().size(); i++) {
UpdateRenamesInPhi(instruction_block->PhiAt(i));
}
size_t end = instruction_block->code_end();
size_t start = instruction_block->code_start();
DCHECK_LE(end, start);
StartBlock(RpoNumber::FromInt(block->rpo_number()));
if (end != start) {
while (start-- > end + 1) {
UpdateRenames(instructions_[start]);
AddInstruction(instructions_[start]);
}
UpdateRenames(instructions_[end]);
AddTerminator(instructions_[end]);
}
EndBlock(RpoNumber::FromInt(block->rpo_number()));
}
#if DEBUG
sequence()->ValidateSSA();
#endif
return true;
}
void InstructionSelector::StartBlock(RpoNumber rpo) {
if (UseInstructionScheduling()) {
DCHECK_NOT_NULL(scheduler_);
scheduler_->StartBlock(rpo);
} else {
sequence()->StartBlock(rpo);
}
}
void InstructionSelector::EndBlock(RpoNumber rpo) {
if (UseInstructionScheduling()) {
DCHECK_NOT_NULL(scheduler_);
scheduler_->EndBlock(rpo);
} else {
sequence()->EndBlock(rpo);
}
}
void InstructionSelector::AddTerminator(Instruction* instr) {
if (UseInstructionScheduling()) {
DCHECK_NOT_NULL(scheduler_);
scheduler_->AddTerminator(instr);
} else {
sequence()->AddInstruction(instr);
}
}
void InstructionSelector::AddInstruction(Instruction* instr) {
if (UseInstructionScheduling()) {
DCHECK_NOT_NULL(scheduler_);
scheduler_->AddInstruction(instr);
} else {
sequence()->AddInstruction(instr);
}
}
Instruction* InstructionSelector::Emit(InstructionCode opcode,
InstructionOperand output,
size_t temp_count,
InstructionOperand* temps) {
size_t output_count = output.IsInvalid() ? 0 : 1;
return Emit(opcode, output_count, &output, 0, nullptr, temp_count, temps);
}
Instruction* InstructionSelector::Emit(InstructionCode opcode,
InstructionOperand output,
InstructionOperand a, size_t temp_count,
InstructionOperand* temps) {
size_t output_count = output.IsInvalid() ? 0 : 1;
return Emit(opcode, output_count, &output, 1, &a, temp_count, temps);
}
Instruction* InstructionSelector::Emit(InstructionCode opcode,
InstructionOperand output,
InstructionOperand a,
InstructionOperand b, size_t temp_count,
InstructionOperand* temps) {
size_t output_count = output.IsInvalid() ? 0 : 1;
InstructionOperand inputs[] = {a, b};
size_t input_count = arraysize(inputs);
return Emit(opcode, output_count, &output, input_count, inputs, temp_count,
temps);
}
Instruction* InstructionSelector::Emit(InstructionCode opcode,
InstructionOperand output,
InstructionOperand a,
InstructionOperand b,
InstructionOperand c, size_t temp_count,
InstructionOperand* temps) {
size_t output_count = output.IsInvalid() ? 0 : 1;
InstructionOperand inputs[] = {a, b, c};
size_t input_count = arraysize(inputs);
return Emit(opcode, output_count, &output, input_count, inputs, temp_count,
temps);
}
Instruction* InstructionSelector::Emit(
InstructionCode opcode, InstructionOperand output, InstructionOperand a,
InstructionOperand b, InstructionOperand c, InstructionOperand d,
size_t temp_count, InstructionOperand* temps) {
size_t output_count = output.IsInvalid() ? 0 : 1;
InstructionOperand inputs[] = {a, b, c, d};
size_t input_count = arraysize(inputs);
return Emit(opcode, output_count, &output, input_count, inputs, temp_count,
temps);
}
Instruction* InstructionSelector::Emit(
InstructionCode opcode, InstructionOperand output, InstructionOperand a,
InstructionOperand b, InstructionOperand c, InstructionOperand d,
InstructionOperand e, size_t temp_count, InstructionOperand* temps) {
size_t output_count = output.IsInvalid() ? 0 : 1;
InstructionOperand inputs[] = {a, b, c, d, e};
size_t input_count = arraysize(inputs);
return Emit(opcode, output_count, &output, input_count, inputs, temp_count,
temps);
}
Instruction* InstructionSelector::Emit(
InstructionCode opcode, InstructionOperand output, InstructionOperand a,
InstructionOperand b, InstructionOperand c, InstructionOperand d,
InstructionOperand e, InstructionOperand f, size_t temp_count,
InstructionOperand* temps) {
size_t output_count = output.IsInvalid() ? 0 : 1;
InstructionOperand inputs[] = {a, b, c, d, e, f};
size_t input_count = arraysize(inputs);
return Emit(opcode, output_count, &output, input_count, inputs, temp_count,
temps);
}
Instruction* InstructionSelector::Emit(
InstructionCode opcode, size_t output_count, InstructionOperand* outputs,
size_t input_count, InstructionOperand* inputs, size_t temp_count,
InstructionOperand* temps) {
if (output_count >= Instruction::kMaxOutputCount ||
input_count >= Instruction::kMaxInputCount ||
temp_count >= Instruction::kMaxTempCount) {
set_instruction_selection_failed();
return nullptr;
}
Instruction* instr =
Instruction::New(instruction_zone(), opcode, output_count, outputs,
input_count, inputs, temp_count, temps);
return Emit(instr);
}
Instruction* InstructionSelector::Emit(Instruction* instr) {
instructions_.push_back(instr);
return instr;
}
bool InstructionSelector::CanCover(Node* user, Node* node) const {
// 1. Both {user} and {node} must be in the same basic block.
if (schedule()->block(node) != schedule()->block(user)) {
return false;
}
// 2. Pure {node}s must be owned by the {user}.
if (node->op()->HasProperty(Operator::kPure)) {
return node->OwnedBy(user);
}
// 3. Impure {node}s must match the effect level of {user}.
if (GetEffectLevel(node) != GetEffectLevel(user)) {
return false;
}
// 4. Only {node} must have value edges pointing to {user}.
for (Edge const edge : node->use_edges()) {
if (edge.from() != user && NodeProperties::IsValueEdge(edge)) {
return false;
}
}
return true;
}
bool InstructionSelector::CanCoverTransitively(Node* user, Node* node,
Node* node_input) const {
if (CanCover(user, node) && CanCover(node, node_input)) {
// If {node} is pure, transitivity might not hold.
if (node->op()->HasProperty(Operator::kPure)) {
// If {node_input} is pure, the effect levels do not matter.
if (node_input->op()->HasProperty(Operator::kPure)) return true;
// Otherwise, {user} and {node_input} must have the same effect level.
return GetEffectLevel(user) == GetEffectLevel(node_input);
}
return true;
}
return false;
}
bool InstructionSelector::IsOnlyUserOfNodeInSameBlock(Node* user,
Node* node) const {
BasicBlock* bb_user = schedule()->block(user);
BasicBlock* bb_node = schedule()->block(node);
if (bb_user != bb_node) return false;
for (Edge const edge : node->use_edges()) {
Node* from = edge.from();
if ((from != user) && (schedule()->block(from) == bb_user)) {
return false;
}
}
return true;
}
void InstructionSelector::UpdateRenames(Instruction* instruction) {
for (size_t i = 0; i < instruction->InputCount(); i++) {
TryRename(instruction->InputAt(i));
}
}
void InstructionSelector::UpdateRenamesInPhi(PhiInstruction* phi) {
for (size_t i = 0; i < phi->operands().size(); i++) {
int vreg = phi->operands()[i];
int renamed = GetRename(vreg);
if (vreg != renamed) {
phi->RenameInput(i, renamed);
}
}
}
int InstructionSelector::GetRename(int virtual_register) {
int rename = virtual_register;
while (true) {
if (static_cast<size_t>(rename) >= virtual_register_rename_.size()) break;
int next = virtual_register_rename_[rename];
if (next == InstructionOperand::kInvalidVirtualRegister) {
break;
}
rename = next;
}
return rename;
}
void InstructionSelector::TryRename(InstructionOperand* op) {
if (!op->IsUnallocated()) return;
UnallocatedOperand* unalloc = UnallocatedOperand::cast(op);
int vreg = unalloc->virtual_register();
int rename = GetRename(vreg);
if (rename != vreg) {
*unalloc = UnallocatedOperand(*unalloc, rename);
}
}
void InstructionSelector::SetRename(const Node* node, const Node* rename) {
int vreg = GetVirtualRegister(node);
if (static_cast<size_t>(vreg) >= virtual_register_rename_.size()) {
int invalid = InstructionOperand::kInvalidVirtualRegister;
virtual_register_rename_.resize(vreg + 1, invalid);
}
virtual_register_rename_[vreg] = GetVirtualRegister(rename);
}
int InstructionSelector::GetVirtualRegister(const Node* node) {
DCHECK_NOT_NULL(node);
size_t const id = node->id();
DCHECK_LT(id, virtual_registers_.size());
int virtual_register = virtual_registers_[id];
if (virtual_register == InstructionOperand::kInvalidVirtualRegister) {
virtual_register = sequence()->NextVirtualRegister();
virtual_registers_[id] = virtual_register;
}
return virtual_register;
}
const std::map<NodeId, int> InstructionSelector::GetVirtualRegistersForTesting()
const {
std::map<NodeId, int> virtual_registers;
for (size_t n = 0; n < virtual_registers_.size(); ++n) {
if (virtual_registers_[n] != InstructionOperand::kInvalidVirtualRegister) {
NodeId const id = static_cast<NodeId>(n);
virtual_registers.insert(std::make_pair(id, virtual_registers_[n]));
}
}
return virtual_registers;
}
bool InstructionSelector::IsDefined(Node* node) const {
DCHECK_NOT_NULL(node);
size_t const id = node->id();
DCHECK_LT(id, defined_.size());
return defined_[id];
}
void InstructionSelector::MarkAsDefined(Node* node) {
DCHECK_NOT_NULL(node);
size_t const id = node->id();
DCHECK_LT(id, defined_.size());
defined_[id] = true;
}
bool InstructionSelector::IsUsed(Node* node) const {
DCHECK_NOT_NULL(node);
// TODO(bmeurer): This is a terrible monster hack, but we have to make sure
// that the Retain is actually emitted, otherwise the GC will mess up.
if (node->opcode() == IrOpcode::kRetain) return true;
if (!node->op()->HasProperty(Operator::kEliminatable)) return true;
size_t const id = node->id();
DCHECK_LT(id, used_.size());
return used_[id];
}
void InstructionSelector::MarkAsUsed(Node* node) {
DCHECK_NOT_NULL(node);
size_t const id = node->id();
DCHECK_LT(id, used_.size());
used_[id] = true;
}
int InstructionSelector::GetEffectLevel(Node* node) const {
DCHECK_NOT_NULL(node);
size_t const id = node->id();
DCHECK_LT(id, effect_level_.size());
return effect_level_[id];
}
int InstructionSelector::GetEffectLevel(Node* node,
FlagsContinuation* cont) const {
return cont->IsBranch()
? GetEffectLevel(
cont->true_block()->PredecessorAt(0)->control_input())
: GetEffectLevel(node);
}
void InstructionSelector::SetEffectLevel(Node* node, int effect_level) {
DCHECK_NOT_NULL(node);
size_t const id = node->id();
DCHECK_LT(id, effect_level_.size());
effect_level_[id] = effect_level;
}
bool InstructionSelector::CanAddressRelativeToRootsRegister(
const ExternalReference& reference) const {
// There are three things to consider here:
// 1. CanUseRootsRegister: Is kRootRegister initialized?
const bool root_register_is_available_and_initialized = CanUseRootsRegister();
if (!root_register_is_available_and_initialized) return false;
// 2. enable_roots_relative_addressing_: Can we address everything on the heap
// through the root register, i.e. are root-relative addresses to arbitrary
// addresses guaranteed not to change between code generation and
// execution?
const bool all_root_relative_offsets_are_constant =
(enable_roots_relative_addressing_ == kEnableRootsRelativeAddressing);
if (all_root_relative_offsets_are_constant) return true;
// 3. IsAddressableThroughRootRegister: Is the target address guaranteed to
// have a fixed root-relative offset? If so, we can ignore 2.
const bool this_root_relative_offset_is_constant =
TurboAssemblerBase::IsAddressableThroughRootRegister(isolate(),
reference);
return this_root_relative_offset_is_constant;
}
bool InstructionSelector::CanUseRootsRegister() const {
return linkage()->GetIncomingDescriptor()->flags() &
CallDescriptor::kCanUseRoots;
}
void InstructionSelector::MarkAsRepresentation(MachineRepresentation rep,
const InstructionOperand& op) {
UnallocatedOperand unalloc = UnallocatedOperand::cast(op);
sequence()->MarkAsRepresentation(rep, unalloc.virtual_register());
}
void InstructionSelector::MarkAsRepresentation(MachineRepresentation rep,
Node* node) {
sequence()->MarkAsRepresentation(rep, GetVirtualRegister(node));
}
namespace {
InstructionOperand OperandForDeopt(Isolate* isolate, OperandGenerator* g,
Node* input, FrameStateInputKind kind,
MachineRepresentation rep) {
if (rep == MachineRepresentation::kNone) {
return g->TempImmediate(FrameStateDescriptor::kImpossibleValue);
}
switch (input->opcode()) {
case IrOpcode::kInt32Constant:
case IrOpcode::kInt64Constant:
case IrOpcode::kNumberConstant:
case IrOpcode::kFloat32Constant:
case IrOpcode::kFloat64Constant:
case IrOpcode::kDelayedStringConstant:
return g->UseImmediate(input);
case IrOpcode::kCompressedHeapConstant:
case IrOpcode::kHeapConstant: {
if (!CanBeTaggedOrCompressedPointer(rep)) {
// If we have inconsistent static and dynamic types, e.g. if we
// smi-check a string, we can get here with a heap object that
// says it is a smi. In that case, we return an invalid instruction
// operand, which will be interpreted as an optimized-out value.
// TODO(jarin) Ideally, we should turn the current instruction
// into an abort (we should never execute it).
return InstructionOperand();
}
Handle<HeapObject> constant = HeapConstantOf(input->op());
RootIndex root_index;
if (isolate->roots_table().IsRootHandle(constant, &root_index) &&
root_index == RootIndex::kOptimizedOut) {
// For an optimized-out object we return an invalid instruction
// operand, so that we take the fast path for optimized-out values.
return InstructionOperand();
}
return g->UseImmediate(input);
}
case IrOpcode::kArgumentsElementsState:
case IrOpcode::kArgumentsLengthState:
case IrOpcode::kObjectState:
case IrOpcode::kTypedObjectState:
UNREACHABLE();
default:
switch (kind) {
case FrameStateInputKind::kStackSlot:
return g->UseUniqueSlot(input);
case FrameStateInputKind::kAny:
// Currently deopts "wrap" other operations, so the deopt's inputs
// are potentially needed until the end of the deoptimising code.
return g->UseAnyAtEnd(input);
}
}
UNREACHABLE();
}
} // namespace
class StateObjectDeduplicator {
public:
explicit StateObjectDeduplicator(Zone* zone) : objects_(zone) {}
static const size_t kNotDuplicated = SIZE_MAX;
size_t GetObjectId(Node* node) {
DCHECK(node->opcode() == IrOpcode::kTypedObjectState ||
node->opcode() == IrOpcode::kObjectId ||
node->opcode() == IrOpcode::kArgumentsElementsState);
for (size_t i = 0; i < objects_.size(); ++i) {
if (objects_[i] == node) return i;
// ObjectId nodes are the Turbofan way to express objects with the same
// identity in the deopt info. So they should always be mapped to
// previously appearing TypedObjectState nodes.
if (HasObjectId(objects_[i]) && HasObjectId(node) &&
ObjectIdOf(objects_[i]->op()) == ObjectIdOf(node->op())) {
return i;
}
}
DCHECK(node->opcode() == IrOpcode::kTypedObjectState ||
node->opcode() == IrOpcode::kArgumentsElementsState);
return kNotDuplicated;
}
size_t InsertObject(Node* node) {
DCHECK(node->opcode() == IrOpcode::kTypedObjectState ||
node->opcode() == IrOpcode::kObjectId ||
node->opcode() == IrOpcode::kArgumentsElementsState);
size_t id = objects_.size();
objects_.push_back(node);
return id;
}
size_t size() const { return objects_.size(); }
private:
static bool HasObjectId(Node* node) {
return node->opcode() == IrOpcode::kTypedObjectState ||
node->opcode() == IrOpcode::kObjectId;
}
ZoneVector<Node*> objects_;
};
// Returns the number of instruction operands added to inputs.
size_t InstructionSelector::AddOperandToStateValueDescriptor(
StateValueList* values, InstructionOperandVector* inputs,
OperandGenerator* g, StateObjectDeduplicator* deduplicator, Node* input,
MachineType type, FrameStateInputKind kind, Zone* zone) {
DCHECK_NOT_NULL(input);
switch (input->opcode()) {
case IrOpcode::kArgumentsElementsState: {
values->PushArgumentsElements(ArgumentsStateTypeOf(input->op()));
// The elements backing store of an arguments object participates in the
// duplicate object counting, but can itself never appear duplicated.
DCHECK_EQ(StateObjectDeduplicator::kNotDuplicated,
deduplicator->GetObjectId(input));
deduplicator->InsertObject(input);
return 0;
}
case IrOpcode::kArgumentsLengthState: {
values->PushArgumentsLength();
return 0;
}
case IrOpcode::kObjectState:
UNREACHABLE();
case IrOpcode::kTypedObjectState:
case IrOpcode::kObjectId: {
size_t id = deduplicator->GetObjectId(input);
if (id == StateObjectDeduplicator::kNotDuplicated) {
DCHECK_EQ(IrOpcode::kTypedObjectState, input->opcode());
size_t entries = 0;
id = deduplicator->InsertObject(input);
StateValueList* nested = values->PushRecursiveField(zone, id);
int const input_count = input->op()->ValueInputCount();
ZoneVector<MachineType> const* types = MachineTypesOf(input->op());
for (int i = 0; i < input_count; ++i) {
entries += AddOperandToStateValueDescriptor(
nested, inputs, g, deduplicator, input->InputAt(i), types->at(i),
kind, zone);
}
return entries;
} else {
// Deoptimizer counts duplicate objects for the running id, so we have
// to push the input again.
deduplicator->InsertObject(input);
values->PushDuplicate(id);
return 0;
}
}
default: {
InstructionOperand op =
OperandForDeopt(isolate(), g, input, kind, type.representation());
if (op.kind() == InstructionOperand::INVALID) {
// Invalid operand means the value is impossible or optimized-out.
values->PushOptimizedOut();
return 0;
} else {
inputs->push_back(op);
values->PushPlain(type);
return 1;
}
}
}
}
struct InstructionSelector::CachedStateValues : public ZoneObject {
public:
CachedStateValues(Zone* zone, StateValueList* values, size_t values_start,
InstructionOperandVector* inputs, size_t inputs_start)
: inputs_(inputs->begin() + inputs_start, inputs->end(), zone),
values_(values->MakeSlice(values_start)) {}
size_t Emit(InstructionOperandVector* inputs, StateValueList* values) {
inputs->insert(inputs->end(), inputs_.begin(), inputs_.end());
values->PushCachedSlice(values_);
return inputs_.size();
}
private:
InstructionOperandVector inputs_;
StateValueList::Slice values_;
};
class InstructionSelector::CachedStateValuesBuilder {
public:
explicit CachedStateValuesBuilder(StateValueList* values,
InstructionOperandVector* inputs,
StateObjectDeduplicator* deduplicator)
: values_(values),
inputs_(inputs),
deduplicator_(deduplicator),
values_start_(values->size()),
nested_start_(values->nested_count()),
inputs_start_(inputs->size()),
deduplicator_start_(deduplicator->size()) {}
// We can only build a CachedStateValues for a StateValue if it didn't update
// any of the ids in the deduplicator.
bool CanCache() const { return deduplicator_->size() == deduplicator_start_; }
InstructionSelector::CachedStateValues* Build(Zone* zone) {
DCHECK(CanCache());
DCHECK(values_->nested_count() == nested_start_);
return zone->New<InstructionSelector::CachedStateValues>(
zone, values_, values_start_, inputs_, inputs_start_);
}
private:
StateValueList* values_;
InstructionOperandVector* inputs_;
StateObjectDeduplicator* deduplicator_;
size_t values_start_;
size_t nested_start_;
size_t inputs_start_;
size_t deduplicator_start_;
};
size_t InstructionSelector::AddInputsToFrameStateDescriptor(
StateValueList* values, InstructionOperandVector* inputs,
OperandGenerator* g, StateObjectDeduplicator* deduplicator, Node* node,
FrameStateInputKind kind, Zone* zone) {
// StateValues are often shared across different nodes, and processing them is
// expensive, so cache the result of processing a StateValue so that we can
// quickly copy the result if we see it again.
FrameStateInput key(node, kind);
auto cache_entry = state_values_cache_.find(key);
if (cache_entry != state_values_cache_.end()) {
// Entry found in cache, emit cached version.
return cache_entry->second->Emit(inputs, values);
} else {
// Not found in cache, generate and then store in cache if possible.
size_t entries = 0;
CachedStateValuesBuilder cache_builder(values, inputs, deduplicator);
StateValuesAccess::iterator it = StateValuesAccess(node).begin();
// Take advantage of sparse nature of StateValuesAccess to skip over
// multiple empty nodes at once pushing repeated OptimizedOuts all in one
// go.
while (!it.done()) {
values->PushOptimizedOut(it.AdvanceTillNotEmpty());
if (it.done()) break;
StateValuesAccess::TypedNode input_node = *it;
entries += AddOperandToStateValueDescriptor(values, inputs, g,
deduplicator, input_node.node,
input_node.type, kind, zone);
++it;
}
if (cache_builder.CanCache()) {
// Use this->zone() to build the cache entry in the instruction selector's
// zone rather than the more long-lived instruction zone.
state_values_cache_.emplace(key, cache_builder.Build(this->zone()));
}
return entries;
}
}
// Returns the number of instruction operands added to inputs.
size_t InstructionSelector::AddInputsToFrameStateDescriptor(
FrameStateDescriptor* descriptor, FrameState state, OperandGenerator* g,
StateObjectDeduplicator* deduplicator, InstructionOperandVector* inputs,
FrameStateInputKind kind, Zone* zone) {
size_t entries = 0;
size_t initial_size = inputs->size();
USE(initial_size); // initial_size is only used for debug.
if (descriptor->outer_state()) {
entries += AddInputsToFrameStateDescriptor(
descriptor->outer_state(), FrameState{state.outer_frame_state()}, g,
deduplicator, inputs, kind, zone);
}
Node* parameters = state.parameters();
Node* locals = state.locals();
Node* stack = state.stack();
Node* context = state.context();
Node* function = state.function();
DCHECK_EQ(descriptor->parameters_count(),
StateValuesAccess(parameters).size());
DCHECK_EQ(descriptor->locals_count(), StateValuesAccess(locals).size());
DCHECK_EQ(descriptor->stack_count(), StateValuesAccess(stack).size());
StateValueList* values_descriptor = descriptor->GetStateValueDescriptors();
DCHECK_EQ(values_descriptor->size(), 0u);
values_descriptor->ReserveSize(descriptor->GetSize());
DCHECK_NOT_NULL(function);
entries += AddOperandToStateValueDescriptor(
values_descriptor, inputs, g, deduplicator, function,
MachineType::AnyTagged(), FrameStateInputKind::kStackSlot, zone);
entries += AddInputsToFrameStateDescriptor(
values_descriptor, inputs, g, deduplicator, parameters, kind, zone);
if (descriptor->HasContext()) {
DCHECK_NOT_NULL(context);
entries += AddOperandToStateValueDescriptor(
values_descriptor, inputs, g, deduplicator, context,
MachineType::AnyTagged(), FrameStateInputKind::kStackSlot, zone);
}
entries += AddInputsToFrameStateDescriptor(values_descriptor, inputs, g,
deduplicator, locals, kind, zone);
entries += AddInputsToFrameStateDescriptor(values_descriptor, inputs, g,
deduplicator, stack, kind, zone);
DCHECK_EQ(initial_size + entries, inputs->size());
return entries;
}
Instruction* InstructionSelector::EmitWithContinuation(
InstructionCode opcode, InstructionOperand a, FlagsContinuation* cont) {
return EmitWithContinuation(opcode, 0, nullptr, 1, &a, cont);
}
Instruction* InstructionSelector::EmitWithContinuation(
InstructionCode opcode, InstructionOperand a, InstructionOperand b,
FlagsContinuation* cont) {
InstructionOperand inputs[] = {a, b};
return EmitWithContinuation(opcode, 0, nullptr, arraysize(inputs), inputs,
cont);
}
Instruction* InstructionSelector::EmitWithContinuation(
InstructionCode opcode, InstructionOperand a, InstructionOperand b,
InstructionOperand c, FlagsContinuation* cont) {
InstructionOperand inputs[] = {a, b, c};
return EmitWithContinuation(opcode, 0, nullptr, arraysize(inputs), inputs,
cont);
}
Instruction* InstructionSelector::EmitWithContinuation(
InstructionCode opcode, size_t output_count, InstructionOperand* outputs,
size_t input_count, InstructionOperand* inputs, FlagsContinuation* cont) {
return EmitWithContinuation(opcode, output_count, outputs, input_count,
inputs, 0, nullptr, cont);
}
Instruction* InstructionSelector::EmitWithContinuation(
InstructionCode opcode, size_t output_count, InstructionOperand* outputs,
size_t input_count, InstructionOperand* inputs, size_t temp_count,
InstructionOperand* temps, FlagsContinuation* cont) {
OperandGenerator g(this);
opcode = cont->Encode(opcode);
continuation_inputs_.resize(0);
for (size_t i = 0; i < input_count; i++) {
continuation_inputs_.push_back(inputs[i]);
}
continuation_outputs_.resize(0);
for (size_t i = 0; i < output_count; i++) {
continuation_outputs_.push_back(outputs[i]);
}
continuation_temps_.resize(0);
for (size_t i = 0; i < temp_count; i++) {
continuation_temps_.push_back(temps[i]);
}
if (cont->IsBranch()) {
continuation_inputs_.push_back(g.Label(cont->true_block()));
continuation_inputs_.push_back(g.Label(cont->false_block()));
} else if (cont->IsDeoptimize()) {
int immediate_args_count = 0;
if (cont->has_extra_args()) {
for (int i = 0; i < cont->extra_args_count(); i++) {
InstructionOperand op = cont->extra_args()[i];
continuation_inputs_.push_back(op);
input_count++;
if (op.IsImmediate()) {
immediate_args_count++;
} else {
// All immediate args should be added last.
DCHECK_EQ(immediate_args_count, 0);
}
}
}
opcode |= DeoptImmedArgsCountField::encode(immediate_args_count) |
DeoptFrameStateOffsetField::encode(static_cast<int>(input_count));
AppendDeoptimizeArguments(&continuation_inputs_, cont->kind(),
cont->reason(), cont->node_id(), cont->feedback(),
FrameState{cont->frame_state()});
} else if (cont->IsSet()) {
continuation_outputs_.push_back(g.DefineAsRegister(cont->result()));
} else if (cont->IsSelect()) {
// The {Select} should put one of two values into the output register,
// depending on the result of the condition. The two result values are in
// the last two input slots, the {false_value} in {input_count - 2}, and the
// true_value in {input_count - 1}. The other inputs are used for the
// condition.
AddOutputToSelectContinuation(&g, static_cast<int>(input_count) - 2,
cont->result());
} else if (cont->IsTrap()) {
int trap_id = static_cast<int>(cont->trap_id());
continuation_inputs_.push_back(g.UseImmediate(trap_id));
} else {
DCHECK(cont->IsNone());
}
size_t const emit_inputs_size = continuation_inputs_.size();
auto* emit_inputs =
emit_inputs_size ? &continuation_inputs_.front() : nullptr;
size_t const emit_outputs_size = continuation_outputs_.size();
auto* emit_outputs =
emit_outputs_size ? &continuation_outputs_.front() : nullptr;
size_t const emit_temps_size = continuation_temps_.size();
auto* emit_temps = emit_temps_size ? &continuation_temps_.front() : nullptr;
return Emit(opcode, emit_outputs_size, emit_outputs, emit_inputs_size,
emit_inputs, emit_temps_size, emit_temps);
}
void InstructionSelector::AppendDeoptimizeArguments(
InstructionOperandVector* args, DeoptimizeKind kind,
DeoptimizeReason reason, NodeId node_id, FeedbackSource const& feedback,
FrameState frame_state) {
OperandGenerator g(this);
FrameStateDescriptor* const descriptor = GetFrameStateDescriptor(frame_state);
DCHECK_NE(DeoptimizeKind::kLazy, kind);
int const state_id = sequence()->AddDeoptimizationEntry(
descriptor, kind, reason, node_id, feedback);
args->push_back(g.TempImmediate(state_id));
StateObjectDeduplicator deduplicator(instruction_zone());
AddInputsToFrameStateDescriptor(descriptor, frame_state, &g, &deduplicator,
args, FrameStateInputKind::kAny,
instruction_zone());
}
// An internal helper class for generating the operands to calls.
// TODO(bmeurer): Get rid of the CallBuffer business and make
// InstructionSelector::VisitCall platform independent instead.
struct CallBuffer {
CallBuffer(Zone* zone, const CallDescriptor* call_descriptor,
FrameStateDescriptor* frame_state)
: descriptor(call_descriptor),
frame_state_descriptor(frame_state),
output_nodes(zone),
outputs(zone),
instruction_args(zone),
pushed_nodes(zone) {
output_nodes.reserve(call_descriptor->ReturnCount());
outputs.reserve(call_descriptor->ReturnCount());
pushed_nodes.reserve(input_count());
instruction_args.reserve(input_count() + frame_state_value_count());
}
const CallDescriptor* descriptor;
FrameStateDescriptor* frame_state_descriptor;
ZoneVector<PushParameter> output_nodes;
InstructionOperandVector outputs;
InstructionOperandVector instruction_args;
ZoneVector<PushParameter> pushed_nodes;
size_t input_count() const { return descriptor->InputCount(); }
size_t frame_state_count() const { return descriptor->FrameStateCount(); }
size_t frame_state_value_count() const {
return (frame_state_descriptor == nullptr)
? 0
: (frame_state_descriptor->GetTotalSize() +
1); // Include deopt id.
}
};
// TODO(bmeurer): Get rid of the CallBuffer business and make
// InstructionSelector::VisitCall platform independent instead.
void InstructionSelector::InitializeCallBuffer(Node* call, CallBuffer* buffer,
CallBufferFlags flags,
int stack_param_delta) {
OperandGenerator g(this);
size_t ret_count = buffer->descriptor->ReturnCount();
bool is_tail_call = (flags & kCallTail) != 0;
DCHECK_LE(call->op()->ValueOutputCount(), ret_count);
DCHECK_EQ(
call->op()->ValueInputCount(),
static_cast<int>(buffer->input_count() + buffer->frame_state_count()));
if (ret_count > 0) {
// Collect the projections that represent multiple outputs from this call.
if (ret_count == 1) {
PushParameter result = {call, buffer->descriptor->GetReturnLocation(0)};
buffer->output_nodes.push_back(result);
} else {
buffer->output_nodes.resize(ret_count);
for (size_t i = 0; i < ret_count; ++i) {
LinkageLocation location = buffer->descriptor->GetReturnLocation(i);
buffer->output_nodes[i] = PushParameter(nullptr, location);
}
for (Edge const edge : call->use_edges()) {
if (!NodeProperties::IsValueEdge(edge)) continue;
Node* node = edge.from();
DCHECK_EQ(IrOpcode::kProjection, node->opcode());
size_t const index = ProjectionIndexOf(node->op());
DCHECK_LT(index, buffer->output_nodes.size());
DCHECK(!buffer->output_nodes[index].node);
buffer->output_nodes[index].node = node;
}
frame_->EnsureReturnSlots(
static_cast<int>(buffer->descriptor->ReturnSlotCount()));
}
// Filter out the outputs that aren't live because no projection uses them.
size_t outputs_needed_by_framestate =
buffer->frame_state_descriptor == nullptr
? 0
: buffer->frame_state_descriptor->state_combine()
.ConsumedOutputCount();
for (size_t i = 0; i < buffer->output_nodes.size(); i++) {
bool output_is_live = buffer->output_nodes[i].node != nullptr ||
i < outputs_needed_by_framestate;
if (output_is_live) {
LinkageLocation location = buffer->output_nodes[i].location;
MachineRepresentation rep = location.GetType().representation();
Node* output = buffer->output_nodes[i].node;
InstructionOperand op = output == nullptr
? g.TempLocation(location)
: g.DefineAsLocation(output, location);
MarkAsRepresentation(rep, op);
if (!UnallocatedOperand::cast(op).HasFixedSlotPolicy()) {
buffer->outputs.push_back(op);
buffer->output_nodes[i].node = nullptr;
}
}
}
}
// The first argument is always the callee code.
Node* callee = call->InputAt(0);
bool call_code_immediate = (flags & kCallCodeImmediate) != 0;
bool call_address_immediate = (flags & kCallAddressImmediate) != 0;
bool call_use_fixed_target_reg = (flags & kCallFixedTargetRegister) != 0;
switch (buffer->descriptor->kind()) {
case CallDescriptor::kCallCodeObject:
buffer->instruction_args.push_back(
(call_code_immediate && callee->opcode() == IrOpcode::kHeapConstant)
? g.UseImmediate(callee)
: call_use_fixed_target_reg
? g.UseFixed(callee, kJavaScriptCallCodeStartRegister)
: g.UseRegister(callee));
break;
case CallDescriptor::kCallAddress:
buffer->instruction_args.push_back(
(call_address_immediate &&
callee->opcode() == IrOpcode::kExternalConstant)
? g.UseImmediate(callee)
: call_use_fixed_target_reg
? g.UseFixed(callee, kJavaScriptCallCodeStartRegister)
: g.UseRegister(callee));
break;
#if V8_ENABLE_WEBASSEMBLY
case CallDescriptor::kCallWasmCapiFunction:
case CallDescriptor::kCallWasmFunction:
case CallDescriptor::kCallWasmImportWrapper:
buffer->instruction_args.push_back(
(call_address_immediate &&
(callee->opcode() == IrOpcode::kRelocatableInt64Constant ||
callee->opcode() == IrOpcode::kRelocatableInt32Constant))
? g.UseImmediate(callee)
: call_use_fixed_target_reg
? g.UseFixed(callee, kJavaScriptCallCodeStartRegister)
: g.UseRegister(callee));
break;
#endif // V8_ENABLE_WEBASSEMBLY
case CallDescriptor::kCallBuiltinPointer:
// The common case for builtin pointers is to have the target in a
// register. If we have a constant, we use a register anyway to simplify
// related code.
buffer->instruction_args.push_back(
call_use_fixed_target_reg
? g.UseFixed(callee, kJavaScriptCallCodeStartRegister)
: g.UseRegister(callee));
break;
case CallDescriptor::kCallJSFunction:
buffer->instruction_args.push_back(
g.UseLocation(callee, buffer->descriptor->GetInputLocation(0)));
break;
}
DCHECK_EQ(1u, buffer->instruction_args.size());
// If the call needs a frame state, we insert the state information as
// follows (n is the number of value inputs to the frame state):
// arg 1 : deoptimization id.
// arg 2 - arg (n + 2) : value inputs to the frame state.
size_t frame_state_entries = 0;
USE(frame_state_entries); // frame_state_entries is only used for debug.
if (buffer->frame_state_descriptor != nullptr) {
FrameState frame_state{
call->InputAt(static_cast<int>(buffer->descriptor->InputCount()))};
// If it was a syntactic tail call we need to drop the current frame and
// all the frames on top of it that are either an arguments adaptor frame
// or a tail caller frame.
if (is_tail_call) {
frame_state = FrameState{NodeProperties::GetFrameStateInput(frame_state)};
buffer->frame_state_descriptor =
buffer->frame_state_descriptor->outer_state();
while (buffer->frame_state_descriptor != nullptr &&
buffer->frame_state_descriptor->type() ==
FrameStateType::kArgumentsAdaptor) {
frame_state =
FrameState{NodeProperties::GetFrameStateInput(frame_state)};
buffer->frame_state_descriptor =
buffer->frame_state_descriptor->outer_state();
}
}
int const state_id = sequence()->AddDeoptimizationEntry(
buffer->frame_state_descriptor, DeoptimizeKind::kLazy,
DeoptimizeReason::kUnknown, call->id(), FeedbackSource());
buffer->instruction_args.push_back(g.TempImmediate(state_id));
StateObjectDeduplicator deduplicator(instruction_zone());
frame_state_entries =
1 + AddInputsToFrameStateDescriptor(
buffer->frame_state_descriptor, frame_state, &g, &deduplicator,
&buffer->instruction_args, FrameStateInputKind::kStackSlot,
instruction_zone());
DCHECK_EQ(1 + frame_state_entries, buffer->instruction_args.size());
}
size_t input_count = static_cast<size_t>(buffer->input_count());
// Split the arguments into pushed_nodes and instruction_args. Pushed
// arguments require an explicit push instruction before the call and do
// not appear as arguments to the call. Everything else ends up
// as an InstructionOperand argument to the call.
auto iter(call->inputs().begin());
size_t pushed_count = 0;
for (size_t index = 0; index < input_count; ++iter, ++index) {
DCHECK(iter != call->inputs().end());
DCHECK_NE(IrOpcode::kFrameState, (*iter)->op()->opcode());
if (index == 0) continue; // The first argument (callee) is already done.
LinkageLocation location = buffer->descriptor->GetInputLocation(index);
if (is_tail_call) {
location = LinkageLocation::ConvertToTailCallerLocation(
location, stack_param_delta);
}
InstructionOperand op = g.UseLocation(*iter, location);
UnallocatedOperand unallocated = UnallocatedOperand::cast(op);
if (unallocated.HasFixedSlotPolicy() && !is_tail_call) {
int stack_index = buffer->descriptor->GetStackIndexFromSlot(
unallocated.fixed_slot_index());
// This can insert empty slots before stack_index and will insert enough
// slots after stack_index to store the parameter.
if (static_cast<size_t>(stack_index) >= buffer->pushed_nodes.size()) {
int num_slots = location.GetSizeInPointers();
buffer->pushed_nodes.resize(stack_index + num_slots);
}
PushParameter param = {*iter, location};
buffer->pushed_nodes[stack_index] = param;
pushed_count++;
} else {
buffer->instruction_args.push_back(op);
}
}
DCHECK_EQ(input_count, buffer->instruction_args.size() + pushed_count -
frame_state_entries);
if (V8_TARGET_ARCH_STORES_RETURN_ADDRESS_ON_STACK && is_tail_call &&
stack_param_delta != 0) {
// For tail calls that change the size of their parameter list and keep
// their return address on the stack, move the return address to just above
// the parameters.
LinkageLocation saved_return_location =
LinkageLocation::ForSavedCallerReturnAddress();
InstructionOperand return_address =
g.UsePointerLocation(LinkageLocation::ConvertToTailCallerLocation(
saved_return_location, stack_param_delta),
saved_return_location);
buffer->instruction_args.push_back(return_address);
}
}
bool InstructionSelector::IsSourcePositionUsed(Node* node) {
return (source_position_mode_ == kAllSourcePositions ||
node->opcode() == IrOpcode::kCall ||
node->opcode() == IrOpcode::kTrapIf ||
node->opcode() == IrOpcode::kTrapUnless ||
node->opcode() == IrOpcode::kProtectedLoad ||
node->opcode() == IrOpcode::kProtectedStore);
}
void InstructionSelector::VisitBlock(BasicBlock* block) {
DCHECK(!current_block_);
current_block_ = block;
auto current_num_instructions = [&] {
DCHECK_GE(kMaxInt, instructions_.size());
return static_cast<int>(instructions_.size());
};
int current_block_end = current_num_instructions();
int effect_level = 0;
for (Node* const node : *block) {
SetEffectLevel(node, effect_level);
if (node->opcode() == IrOpcode::kStore ||
node->opcode() == IrOpcode::kUnalignedStore ||
node->opcode() == IrOpcode::kCall ||
node->opcode() == IrOpcode::kProtectedLoad ||
node->opcode() == IrOpcode::kProtectedStore ||
node->opcode() == IrOpcode::kLoadTransform ||
#define ADD_EFFECT_FOR_ATOMIC_OP(Opcode) \
node->opcode() == IrOpcode::k##Opcode ||
MACHINE_ATOMIC_OP_LIST(ADD_EFFECT_FOR_ATOMIC_OP)
#undef ADD_EFFECT_FOR_ATOMIC_OP
node->opcode() == IrOpcode::kMemoryBarrier) {
++effect_level;
}
}
// We visit the control first, then the nodes in the block, so the block's
// control input should be on the same effect level as the last node.
if (block->control_input() != nullptr) {
SetEffectLevel(block->control_input(), effect_level);
}
auto FinishEmittedInstructions = [&](Node* node, int instruction_start) {
if (instruction_selection_failed()) return false;
if (current_num_instructions() == instruction_start) return true;
std::reverse(instructions_.begin() + instruction_start,
instructions_.end());
if (!node) return true;
if (!source_positions_) return true;
SourcePosition source_position = source_positions_->GetSourcePosition(node);
if (source_position.IsKnown() && IsSourcePositionUsed(node)) {
sequence()->SetSourcePosition(instructions_.back(), source_position);
}
return true;
};
// Generate code for the block control "top down", but schedule the code
// "bottom up".
VisitControl(block);
if (!FinishEmittedInstructions(block->control_input(), current_block_end)) {
return;
}
// Visit code in reverse control flow order, because architecture-specific
// matching may cover more than one node at a time.
for (auto node : base::Reversed(*block)) {
int current_node_end = current_num_instructions();
// Skip nodes that are unused or already defined.
if (IsUsed(node) && !IsDefined(node)) {
// Generate code for this node "top down", but schedule the code "bottom
// up".
VisitNode(node);
if (!FinishEmittedInstructions(node, current_node_end)) return;
}
if (trace_turbo_ == kEnableTraceTurboJson) {
instr_origins_[node->id()] = {current_num_instructions(),
current_node_end};
}
}
// We're done with the block.
InstructionBlock* instruction_block =
sequence()->InstructionBlockAt(RpoNumber::FromInt(block->rpo_number()));
if (current_num_instructions() == current_block_end) {
// Avoid empty block: insert a {kArchNop} instruction.
Emit(Instruction::New(sequence()->zone(), kArchNop));
}
instruction_block->set_code_start(current_num_instructions());
instruction_block->set_code_end(current_block_end);
current_block_ = nullptr;
}
void InstructionSelector::VisitControl(BasicBlock* block) {
#ifdef DEBUG
// SSA deconstruction requires targets of branches not to have phis.
// Edge split form guarantees this property, but is more strict.
if (block->SuccessorCount() > 1) {
for (BasicBlock* const successor : block->successors()) {
for (Node* const node : *successor) {
if (IrOpcode::IsPhiOpcode(node->opcode())) {
std::ostringstream str;
str << "You might have specified merged variables for a label with "
<< "only one predecessor." << std::endl
<< "# Current Block: " << *successor << std::endl
<< "# Node: " << *node;
FATAL("%s", str.str().c_str());
}
}
}
}
#endif
Node* input = block->control_input();
int instruction_end = static_cast<int>(instructions_.size());
switch (block->control()) {
case BasicBlock::kGoto:
VisitGoto(block->SuccessorAt(0));
break;
case BasicBlock::kCall: {
DCHECK_EQ(IrOpcode::kCall, input->opcode());
BasicBlock* success = block->SuccessorAt(0);
BasicBlock* exception = block->SuccessorAt(1);
VisitCall(input, exception);
VisitGoto(success);
break;
}
case BasicBlock::kTailCall: {
DCHECK_EQ(IrOpcode::kTailCall, input->opcode());
VisitTailCall(input);
break;
}
case BasicBlock::kBranch: {
DCHECK_EQ(IrOpcode::kBranch, input->opcode());
BasicBlock* tbranch = block->SuccessorAt(0);
BasicBlock* fbranch = block->SuccessorAt(1);
if (tbranch == fbranch) {
VisitGoto(tbranch);
} else {
VisitBranch(input, tbranch, fbranch);
}
break;
}
case BasicBlock::kSwitch: {
DCHECK_EQ(IrOpcode::kSwitch, input->opcode());
// Last successor must be {IfDefault}.
BasicBlock* default_branch = block->successors().back();
DCHECK_EQ(IrOpcode::kIfDefault, default_branch->front()->opcode());
// All other successors must be {IfValue}s.
int32_t min_value = std::numeric_limits<int32_t>::max();
int32_t max_value = std::numeric_limits<int32_t>::min();
size_t case_count = block->SuccessorCount() - 1;
ZoneVector<CaseInfo> cases(case_count, zone());
for (size_t i = 0; i < case_count; ++i) {
BasicBlock* branch = block->SuccessorAt(i);
const IfValueParameters& p = IfValueParametersOf(branch->front()->op());
cases[i] = CaseInfo{p.value(), p.comparison_order(), branch};
if (min_value > p.value()) min_value = p.value();
if (max_value < p.value()) max_value = p.value();
}
SwitchInfo sw(cases, min_value, max_value, default_branch);
VisitSwitch(input, sw);
break;
}
case BasicBlock::kReturn: {
DCHECK_EQ(IrOpcode::kReturn, input->opcode());
VisitReturn(input);
break;
}
case BasicBlock::kDeoptimize: {
DeoptimizeParameters p = DeoptimizeParametersOf(input->op());
FrameState value{input->InputAt(0)};
VisitDeoptimize(p.kind(), p.reason(), input->id(), p.feedback(), value);
break;
}
case BasicBlock::kThrow:
DCHECK_EQ(IrOpcode::kThrow, input->opcode());
VisitThrow(input);
break;
case BasicBlock::kNone: {
// Exit block doesn't have control.
DCHECK_NULL(input);
break;
}
default:
UNREACHABLE();
}
if (trace_turbo_ == kEnableTraceTurboJson && input) {
int instruction_start = static_cast<int>(instructions_.size());
instr_origins_[input->id()] = {instruction_start, instruction_end};
}
}
void InstructionSelector::MarkPairProjectionsAsWord32(Node* node) {
Node* projection0 = NodeProperties::FindProjection(node, 0);
if (projection0) {
MarkAsWord32(projection0);
}
Node* projection1 = NodeProperties::FindProjection(node, 1);
if (projection1) {
MarkAsWord32(projection1);
}
}
void InstructionSelector::VisitNode(Node* node) {
tick_counter_->TickAndMaybeEnterSafepoint();
DCHECK_NOT_NULL(schedule()->block(node)); // should only use scheduled nodes.
switch (node->opcode()) {
case IrOpcode::kStart:
case IrOpcode::kLoop:
case IrOpcode::kEnd:
case IrOpcode::kBranch:
case IrOpcode::kIfTrue:
case IrOpcode::kIfFalse:
case IrOpcode::kIfSuccess:
case IrOpcode::kSwitch:
case IrOpcode::kIfValue:
case IrOpcode::kIfDefault:
case IrOpcode::kEffectPhi:
case IrOpcode::kMerge:
case IrOpcode::kTerminate:
case IrOpcode::kBeginRegion:
// No code needed for these graph artifacts.
return;
case IrOpcode::kIfException:
return MarkAsTagged(node), VisitIfException(node);
case IrOpcode::kFinishRegion:
return MarkAsTagged(node), VisitFinishRegion(node);
case IrOpcode::kParameter: {
// Parameters should always be scheduled to the first block.
DCHECK_EQ(schedule()->block(node)->rpo_number(), 0);
MachineType type =
linkage()->GetParameterType(ParameterIndexOf(node->op()));
MarkAsRepresentation(type.representation(), node);
return VisitParameter(node);
}
case IrOpcode::kOsrValue:
return MarkAsTagged(node), VisitOsrValue(node);
case IrOpcode::kPhi: {
MachineRepresentation rep = PhiRepresentationOf(node->op());
if (rep == MachineRepresentation::kNone) return;
MarkAsRepresentation(rep, node);
return VisitPhi(node);
}
case IrOpcode::kProjection:
return VisitProjection(node);
case IrOpcode::kInt32Constant:
case IrOpcode::kInt64Constant:
case IrOpcode::kTaggedIndexConstant:
case IrOpcode::kExternalConstant:
case IrOpcode::kRelocatableInt32Constant:
case IrOpcode::kRelocatableInt64Constant:
return VisitConstant(node);
case IrOpcode::kFloat32Constant:
return MarkAsFloat32(node), VisitConstant(node);
case IrOpcode::kFloat64Constant:
return MarkAsFloat64(node), VisitConstant(node);
case IrOpcode::kHeapConstant:
return MarkAsTagged(node), VisitConstant(node);
case IrOpcode::kCompressedHeapConstant:
return MarkAsCompressed(node), VisitConstant(node);
case IrOpcode::kNumberConstant: {
double value = OpParameter<double>(node->op());
if (!IsSmiDouble(value)) MarkAsTagged(node);
return VisitConstant(node);
}
case IrOpcode::kDelayedStringConstant:
return MarkAsTagged(node), VisitConstant(node);
case IrOpcode::kCall:
return VisitCall(node);
case IrOpcode::kDeoptimizeIf:
return VisitDeoptimizeIf(node);
case IrOpcode::kDeoptimizeUnless:
return VisitDeoptimizeUnless(node);
case IrOpcode::kDynamicCheckMapsWithDeoptUnless:
return VisitDynamicCheckMapsWithDeoptUnless(node);
case IrOpcode::kTrapIf:
return VisitTrapIf(node, TrapIdOf(node->op()));
case IrOpcode::kTrapUnless:
return VisitTrapUnless(node, TrapIdOf(node->op()));
case IrOpcode::kFrameState:
case IrOpcode::kStateValues:
case IrOpcode::kObjectState:
return;
case IrOpcode::kAbortCSAAssert:
VisitAbortCSAAssert(node);
return;
case IrOpcode::kDebugBreak:
VisitDebugBreak(node);
return;
case IrOpcode::kUnreachable:
VisitUnreachable(node);
return;
case IrOpcode::kStaticAssert:
VisitStaticAssert(node);
return;
case IrOpcode::kDeadValue:
VisitDeadValue(node);
return;
case IrOpcode::kComment:
VisitComment(node);
return;
case IrOpcode::kRetain:
VisitRetain(node);
return;
case IrOpcode::kLoad:
case IrOpcode::kLoadImmutable: {
LoadRepresentation type = LoadRepresentationOf(node->op());
MarkAsRepresentation(type.representation(), node);
return VisitLoad(node);
}
case IrOpcode::kLoadTransform: {
MarkAsRepresentation(MachineRepresentation::kSimd128, node);
return VisitLoadTransform(node);
}
case IrOpcode::kLoadLane: {
MarkAsRepresentation(MachineRepresentation::kSimd128, node);
return VisitLoadLane(node);
}
case IrOpcode::kStore:
return VisitStore(node);
case IrOpcode::kProtectedStore:
return VisitProtectedStore(node);
case IrOpcode::kStoreLane: {
MarkAsRepresentation(MachineRepresentation::kSimd128, node);
return VisitStoreLane(node);
}
case IrOpcode::kWord32And:
return MarkAsWord32(node), VisitWord32And(node);
case IrOpcode::kWord32Or:
return MarkAsWord32(node), VisitWord32Or(node);
case IrOpcode::kWord32Xor:
return MarkAsWord32(node), VisitWord32Xor(node);
case IrOpcode::kWord32Shl:
return MarkAsWord32(node), VisitWord32Shl(node);
case IrOpcode::kWord32Shr:
return MarkAsWord32(node), VisitWord32Shr(node);
case IrOpcode::kWord32Sar:
return MarkAsWord32(node), VisitWord32Sar(node);
case IrOpcode::kWord32Rol:
return MarkAsWord32(node), VisitWord32Rol(node);
case IrOpcode::kWord32Ror:
return MarkAsWord32(node), VisitWord32Ror(node);
case IrOpcode::kWord32Equal:
return VisitWord32Equal(node);
case IrOpcode::kWord32Clz:
return MarkAsWord32(node), VisitWord32Clz(node);
case IrOpcode::kWord32Ctz:
return MarkAsWord32(node), VisitWord32Ctz(node);
case IrOpcode::kWord32ReverseBits:
return MarkAsWord32(node), VisitWord32ReverseBits(node);
case IrOpcode::kWord32ReverseBytes:
return MarkAsWord32(node), VisitWord32ReverseBytes(node);
case IrOpcode::kInt32AbsWithOverflow:
return MarkAsWord32(node), VisitInt32AbsWithOverflow(node);
case IrOpcode::kWord32Popcnt:
return MarkAsWord32(node), VisitWord32Popcnt(node);
case IrOpcode::kWord64Popcnt:
return MarkAsWord32(node), VisitWord64Popcnt(node);
case IrOpcode::kWord32Select:
return MarkAsWord32(node), VisitSelect(node);
case IrOpcode::kWord64And:
return MarkAsWord64(node), VisitWord64And(node);
case IrOpcode::kWord64Or:
return MarkAsWord64(node), VisitWord64Or(node);
case IrOpcode::kWord64Xor:
return MarkAsWord64(node), VisitWord64Xor(node);
case IrOpcode::kWord64Shl:
return MarkAsWord64(node), VisitWord64Shl(node);
case IrOpcode::kWord64Shr:
return MarkAsWord64(node), VisitWord64Shr(node);
case IrOpcode::kWord64Sar:
return MarkAsWord64(node), VisitWord64Sar(node);
case IrOpcode::kWord64Rol:
return MarkAsWord64(node), VisitWord64Rol(node);
case IrOpcode::kWord64Ror:
return MarkAsWord64(node), VisitWord64Ror(node);
case IrOpcode::kWord64Clz:
return MarkAsWord64(node), VisitWord64Clz(node);
case IrOpcode::kWord64Ctz:
return MarkAsWord64(node), VisitWord64Ctz(node);
case IrOpcode::kWord64ReverseBits:
return MarkAsWord64(node), VisitWord64ReverseBits(node);
case IrOpcode::kWord64ReverseBytes:
return MarkAsWord64(node), VisitWord64ReverseBytes(node);
case IrOpcode::kSimd128ReverseBytes:
return MarkAsSimd128(node), VisitSimd128ReverseBytes(node);
case IrOpcode::kInt64AbsWithOverflow:
return MarkAsWord64(node), VisitInt64AbsWithOverflow(node);
case IrOpcode::kWord64Equal:
return VisitWord64Equal(node);
case IrOpcode::kWord64Select:
return MarkAsWord64(node), VisitSelect(node);
case IrOpcode::kInt32Add:
return MarkAsWord32(node), VisitInt32Add(node);
case IrOpcode::kInt32AddWithOverflow:
return MarkAsWord32(node), VisitInt32AddWithOverflow(node);
case IrOpcode::kInt32Sub:
return MarkAsWord32(node), VisitInt32Sub(node);
case IrOpcode::kInt32SubWithOverflow:
return VisitInt32SubWithOverflow(node);
case IrOpcode::kInt32Mul:
return MarkAsWord32(node), VisitInt32Mul(node);
case IrOpcode::kInt32MulWithOverflow:
return MarkAsWord32(node), VisitInt32MulWithOverflow(node);
case IrOpcode::kInt32MulHigh:
return VisitInt32MulHigh(node);
case IrOpcode::kInt32Div:
return MarkAsWord32(node), VisitInt32Div(node);
case IrOpcode::kInt32Mod:
return MarkAsWord32(node), VisitInt32Mod(node);
case IrOpcode::kInt32LessThan:
return VisitInt32LessThan(node);
case IrOpcode::kInt32LessThanOrEqual:
return VisitInt32LessThanOrEqual(node);
case IrOpcode::kUint32Div:
return MarkAsWord32(node), VisitUint32Div(node);
case IrOpcode::kUint32LessThan:
return VisitUint32LessThan(node);
case IrOpcode::kUint32LessThanOrEqual:
return VisitUint32LessThanOrEqual(node);
case IrOpcode::kUint32Mod:
return MarkAsWord32(node), VisitUint32Mod(node);
case IrOpcode::kUint32MulHigh:
return VisitUint32MulHigh(node);
case IrOpcode::kInt64Add:
return MarkAsWord64(node), VisitInt64Add(node);
case IrOpcode::kInt64AddWithOverflow:
return MarkAsWord64(node), VisitInt64AddWithOverflow(node);
case IrOpcode::kInt64Sub:
return MarkAsWord64(node), VisitInt64Sub(node);
case IrOpcode::kInt64SubWithOverflow:
return MarkAsWord64(node), VisitInt64SubWithOverflow(node);
case IrOpcode::kInt64Mul:
return MarkAsWord64(node), VisitInt64Mul(node);
case IrOpcode::kInt64Div:
return MarkAsWord64(node), VisitInt64Div(node);
case IrOpcode::kInt64Mod:
return MarkAsWord64(node), VisitInt64Mod(node);
case IrOpcode::kInt64LessThan:
return VisitInt64LessThan(node);
case IrOpcode::kInt64LessThanOrEqual:
return VisitInt64LessThanOrEqual(node);
case IrOpcode::kUint64Div:
return MarkAsWord64(node), VisitUint64Div(node);
case IrOpcode::kUint64LessThan:
return VisitUint64LessThan(node);
case IrOpcode::kUint64LessThanOrEqual:
return VisitUint64LessThanOrEqual(node);
case IrOpcode::kUint64Mod:
return MarkAsWord64(node), VisitUint64Mod(node);
case IrOpcode::kBitcastTaggedToWord:
case IrOpcode::kBitcastTaggedToWordForTagAndSmiBits:
return MarkAsRepresentation(MachineType::PointerRepresentation(), node),
VisitBitcastTaggedToWord(node);
case IrOpcode::kBitcastWordToTagged:
return MarkAsTagged(node), VisitBitcastWordToTagged(node);
case IrOpcode::kBitcastWordToTaggedSigned:
return MarkAsRepresentation(MachineRepresentation::kTaggedSigned, node),
EmitIdentity(node);
case IrOpcode::kChangeFloat32ToFloat64:
return MarkAsFloat64(node), VisitChangeFloat32ToFloat64(node);
case IrOpcode::kChangeInt32ToFloat64:
return MarkAsFloat64(node), VisitChangeInt32ToFloat64(node);
case IrOpcode::kChangeInt64ToFloat64:
return MarkAsFloat64(node), VisitChangeInt64ToFloat64(node);
case IrOpcode::kChangeUint32ToFloat64:
return MarkAsFloat64(node), VisitChangeUint32ToFloat64(node);
case IrOpcode::kChangeFloat64ToInt32:
return MarkAsWord32(node), VisitChangeFloat64ToInt32(node);
case IrOpcode::kChangeFloat64ToInt64:
return MarkAsWord64(node), VisitChangeFloat64ToInt64(node);
case IrOpcode::kChangeFloat64ToUint32:
return MarkAsWord32(node), VisitChangeFloat64ToUint32(node);
case IrOpcode::kChangeFloat64ToUint64:
return MarkAsWord64(node), VisitChangeFloat64ToUint64(node);
case IrOpcode::kFloat64SilenceNaN:
MarkAsFloat64(node);
if (CanProduceSignalingNaN(node->InputAt(0))) {
return VisitFloat64SilenceNaN(node);
} else {
return EmitIdentity(node);
}
case IrOpcode::kTruncateFloat64ToInt64:
return MarkAsWord64(node), VisitTruncateFloat64ToInt64(node);
case IrOpcode::kTruncateFloat64ToUint32:
return MarkAsWord32(node), VisitTruncateFloat64ToUint32(node);
case IrOpcode::kTruncateFloat32ToInt32:
return MarkAsWord32(node), VisitTruncateFloat32ToInt32(node);
case IrOpcode::kTruncateFloat32ToUint32:
return MarkAsWord32(node), VisitTruncateFloat32ToUint32(node);
case IrOpcode::kTryTruncateFloat32ToInt64:
return MarkAsWord64(node), VisitTryTruncateFloat32ToInt64(node);
case IrOpcode::kTryTruncateFloat64ToInt64:
return MarkAsWord64(node), VisitTryTruncateFloat64ToInt64(node);
case IrOpcode::kTryTruncateFloat32ToUint64:
return MarkAsWord64(node), VisitTryTruncateFloat32ToUint64(node);
case IrOpcode::kTryTruncateFloat64ToUint64:
return MarkAsWord64(node), VisitTryTruncateFloat64ToUint64(node);
case IrOpcode::kBitcastWord32ToWord64:
return MarkAsWord64(node), VisitBitcastWord32ToWord64(node);
case IrOpcode::kChangeInt32ToInt64:
return MarkAsWord64(node), VisitChangeInt32ToInt64(node);
case IrOpcode::kChangeUint32ToUint64:
return MarkAsWord64(node), VisitChangeUint32ToUint64(node);
case IrOpcode::kTruncateFloat64ToFloat32:
return MarkAsFloat32(node), VisitTruncateFloat64ToFloat32(node);
case IrOpcode::kTruncateFloat64ToWord32:
return MarkAsWord32(node), VisitTruncateFloat64ToWord32(node);
case IrOpcode::kTruncateInt64ToInt32:
return MarkAsWord32(node), VisitTruncateInt64ToInt32(node);
case IrOpcode::kRoundFloat64ToInt32:
return MarkAsWord32(node), VisitRoundFloat64ToInt32(node);
case IrOpcode::kRoundInt64ToFloat32:
return MarkAsFloat32(node), VisitRoundInt64ToFloat32(node);
case IrOpcode::kRoundInt32ToFloat32:
return MarkAsFloat32(node), VisitRoundInt32ToFloat32(node);
case IrOpcode::kRoundInt64ToFloat64:
return MarkAsFloat64(node), VisitRoundInt64ToFloat64(node);
case IrOpcode::kBitcastFloat32ToInt32:
return MarkAsWord32(node), VisitBitcastFloat32ToInt32(node);
case IrOpcode::kRoundUint32ToFloat32:
return MarkAsFloat32(node), VisitRoundUint32ToFloat32(node);
case IrOpcode::kRoundUint64ToFloat32:
return MarkAsFloat64(node), VisitRoundUint64ToFloat32(node);
case IrOpcode::kRoundUint64ToFloat64:
return MarkAsFloat64(node), VisitRoundUint64ToFloat64(node);
case IrOpcode::kBitcastFloat64ToInt64:
return MarkAsWord64(node), VisitBitcastFloat64ToInt64(node);
case IrOpcode::kBitcastInt32ToFloat32:
return MarkAsFloat32(node), VisitBitcastInt32ToFloat32(node);
case IrOpcode::kBitcastInt64ToFloat64:
return MarkAsFloat64(node), VisitBitcastInt64ToFloat64(node);
case IrOpcode::kFloat32Add:
return MarkAsFloat32(node), VisitFloat32Add(node);
case IrOpcode::kFloat32Sub:
return MarkAsFloat32(node), VisitFloat32Sub(node);
case IrOpcode::kFloat32Neg:
return MarkAsFloat32(node), VisitFloat32Neg(node);
case IrOpcode::kFloat32Mul:
return MarkAsFloat32(node), VisitFloat32Mul(node);
case IrOpcode::kFloat32Div:
return MarkAsFloat32(node), VisitFloat32Div(node);
case IrOpcode::kFloat32Abs:
return MarkAsFloat32(node), VisitFloat32Abs(node);
case IrOpcode::kFloat32Sqrt:
return MarkAsFloat32(node), VisitFloat32Sqrt(node);
case IrOpcode::kFloat32Equal:
return VisitFloat32Equal(node);
case IrOpcode::kFloat32LessThan:
return VisitFloat32LessThan(node);
case IrOpcode::kFloat32LessThanOrEqual:
return VisitFloat32LessThanOrEqual(node);
case IrOpcode::kFloat32Max:
return MarkAsFloat32(node), VisitFloat32Max(node);
case IrOpcode::kFloat32Min:
return MarkAsFloat32(node), VisitFloat32Min(node);
case IrOpcode::kFloat32Select:
return MarkAsFloat32(node), VisitSelect(node);
case IrOpcode::kFloat64Add:
return MarkAsFloat64(node), VisitFloat64Add(node);
case IrOpcode::kFloat64Sub:
return MarkAsFloat64(node), VisitFloat64Sub(node);
case IrOpcode::kFloat64Neg:
return MarkAsFloat64(node), VisitFloat64Neg(node);
case IrOpcode::kFloat64Mul:
return MarkAsFloat64(node), VisitFloat64Mul(node);
case IrOpcode::kFloat64Div:
return MarkAsFloat64(node), VisitFloat64Div(node);
case IrOpcode::kFloat64Mod:
return MarkAsFloat64(node), VisitFloat64Mod(node);
case IrOpcode::kFloat64Min:
return MarkAsFloat64(node), VisitFloat64Min(node);
case IrOpcode::kFloat64Max:
return MarkAsFloat64(node), VisitFloat64Max(node);
case IrOpcode::kFloat64Abs:
return MarkAsFloat64(node), VisitFloat64Abs(node);
case IrOpcode::kFloat64Acos:
return MarkAsFloat64(node), VisitFloat64Acos(node);
case IrOpcode::kFloat64Acosh:
return MarkAsFloat64(node), VisitFloat64Acosh(node);
case IrOpcode::kFloat64Asin:
return MarkAsFloat64(node), VisitFloat64Asin(node);
case IrOpcode::kFloat64Asinh:
return MarkAsFloat64(node), VisitFloat64Asinh(node);
case IrOpcode::kFloat64Atan:
return MarkAsFloat64(node), VisitFloat64Atan(node);
case IrOpcode::kFloat64Atanh:
return MarkAsFloat64(node), VisitFloat64Atanh(node);
case IrOpcode::kFloat64Atan2:
return MarkAsFloat64(node), VisitFloat64Atan2(node);
case IrOpcode::kFloat64Cbrt:
return MarkAsFloat64(node), VisitFloat64Cbrt(node);
case IrOpcode::kFloat64Cos:
return MarkAsFloat64(node), VisitFloat64Cos(node);
case IrOpcode::kFloat64Cosh:
return MarkAsFloat64(node), VisitFloat64Cosh(node);
case IrOpcode::kFloat64Exp:
return MarkAsFloat64(node), VisitFloat64Exp(node);
case IrOpcode::kFloat64Expm1:
return MarkAsFloat64(node), VisitFloat64Expm1(node);
case IrOpcode::kFloat64Log:
return MarkAsFloat64(node), VisitFloat64Log(node);
case IrOpcode::kFloat64Log1p:
return MarkAsFloat64(node), VisitFloat64Log1p(node);
case IrOpcode::kFloat64Log10:
return MarkAsFloat64(node), VisitFloat64Log10(node);
case IrOpcode::kFloat64Log2:
return MarkAsFloat64(node), VisitFloat64Log2(node);
case IrOpcode::kFloat64Pow:
return MarkAsFloat64(node), VisitFloat64Pow(node);
case IrOpcode::kFloat64Sin:
return MarkAsFloat64(node), VisitFloat64Sin(node);
case IrOpcode::kFloat64Sinh:
return MarkAsFloat64(node), VisitFloat64Sinh(node);
case IrOpcode::kFloat64Sqrt:
return MarkAsFloat64(node), VisitFloat64Sqrt(node);
case IrOpcode::kFloat64Tan:
return MarkAsFloat64(node), VisitFloat64Tan(node);
case IrOpcode::kFloat64Tanh:
return MarkAsFloat64(node), VisitFloat64Tanh(node);
case IrOpcode::kFloat64Equal:
return VisitFloat64Equal(node);
case IrOpcode::kFloat64LessThan:
return VisitFloat64LessThan(node);
case IrOpcode::kFloat64LessThanOrEqual:
return VisitFloat64LessThanOrEqual(node);
case IrOpcode::kFloat64Select:
return MarkAsFloat64(node), VisitSelect(node);
case IrOpcode::kFloat32RoundDown:
return MarkAsFloat32(node), VisitFloat32RoundDown(node);
case IrOpcode::kFloat64RoundDown:
return MarkAsFloat64(node), VisitFloat64RoundDown(node);
case IrOpcode::kFloat32RoundUp:
return MarkAsFloat32(node), VisitFloat32RoundUp(node);
case IrOpcode::kFloat64RoundUp:
return MarkAsFloat64(node), VisitFloat64RoundUp(node);
case IrOpcode::kFloat32RoundTruncate:
return MarkAsFloat32(node), VisitFloat32RoundTruncate(node);
case IrOpcode::kFloat64RoundTruncate:
return MarkAsFloat64(node), VisitFloat64RoundTruncate(node);
case IrOpcode::kFloat64RoundTiesAway:
return MarkAsFloat64(node), VisitFloat64RoundTiesAway(node);
case IrOpcode::kFloat32RoundTiesEven:
return MarkAsFloat32(node), VisitFloat32RoundTiesEven(node);
case IrOpcode::kFloat64RoundTiesEven:
return MarkAsFloat64(node), VisitFloat64RoundTiesEven(node);
case IrOpcode::kFloat64ExtractLowWord32:
return MarkAsWord32(node), VisitFloat64ExtractLowWord32(node);
case IrOpcode::kFloat64ExtractHighWord32:
return MarkAsWord32(node), VisitFloat64ExtractHighWord32(node);
case IrOpcode::kFloat64InsertLowWord32:
return MarkAsFloat64(node), VisitFloat64InsertLowWord32(node);
case IrOpcode::kFloat64InsertHighWord32:
return MarkAsFloat64(node), VisitFloat64InsertHighWord32(node);
case IrOpcode::kStackSlot:
return VisitStackSlot(node);
case IrOpcode::kStackPointerGreaterThan:
return VisitStackPointerGreaterThan(node);
case IrOpcode::kLoadStackCheckOffset:
return VisitLoadStackCheckOffset(node);
case IrOpcode::kLoadFramePointer:
return VisitLoadFramePointer(node);
case IrOpcode::kLoadParentFramePointer:
return VisitLoadParentFramePointer(node);
case IrOpcode::kUnalignedLoad: {
LoadRepresentation type = LoadRepresentationOf(node->op());
MarkAsRepresentation(type.representation(), node);
return VisitUnalignedLoad(node);
}
case IrOpcode::kUnalignedStore:
return VisitUnalignedStore(node);
case IrOpcode::kInt32PairAdd:
MarkAsWord32(node);
MarkPairProjectionsAsWord32(node);
return VisitInt32PairAdd(node);
case IrOpcode::kInt32PairSub:
MarkAsWord32(node);
MarkPairProjectionsAsWord32(node);
return VisitInt32PairSub(node);
case IrOpcode::kInt32PairMul:
MarkAsWord32(node);
MarkPairProjectionsAsWord32(node);
return VisitInt32PairMul(node);
case IrOpcode::kWord32PairShl:
MarkAsWord32(node);
MarkPairProjectionsAsWord32(node);
return VisitWord32PairShl(node);
case IrOpcode::kWord32PairShr:
MarkAsWord32(node);
MarkPairProjectionsAsWord32(node);
return VisitWord32PairShr(node);
case IrOpcode::kWord32PairSar:
MarkAsWord32(node);
MarkPairProjectionsAsWord32(node);
return VisitWord32PairSar(node);
case IrOpcode::kMemoryBarrier:
return VisitMemoryBarrier(node);
case IrOpcode::kWord32AtomicLoad: {
LoadRepresentation type = LoadRepresentationOf(node->op());
MarkAsRepresentation(type.representation(), node);
return VisitWord32AtomicLoad(node);
}
case IrOpcode::kWord64AtomicLoad: {
LoadRepresentation type = LoadRepresentationOf(node->op());
MarkAsRepresentation(type.representation(), node);
return VisitWord64AtomicLoad(node);
}
case IrOpcode::kWord32AtomicStore:
return VisitWord32AtomicStore(node);
case IrOpcode::kWord64AtomicStore:
return VisitWord64AtomicStore(node);
case IrOpcode::kWord32AtomicPairStore:
return VisitWord32AtomicPairStore(node);
case IrOpcode::kWord32AtomicPairLoad: {
MarkAsWord32(node);
MarkPairProjectionsAsWord32(node);
return VisitWord32AtomicPairLoad(node);
}
#define ATOMIC_CASE(name, rep) \
case IrOpcode::k##rep##Atomic##name: { \
MachineType type = AtomicOpType(node->op()); \
MarkAsRepresentation(type.representation(), node); \
return Visit##rep##Atomic##name(node); \
}
ATOMIC_CASE(Add, Word32)
ATOMIC_CASE(Add, Word64)
ATOMIC_CASE(Sub, Word32)
ATOMIC_CASE(Sub, Word64)
ATOMIC_CASE(And, Word32)
ATOMIC_CASE(And, Word64)
ATOMIC_CASE(Or, Word32)
ATOMIC_CASE(Or, Word64)
ATOMIC_CASE(Xor, Word32)
ATOMIC_CASE(Xor, Word64)
ATOMIC_CASE(Exchange, Word32)
ATOMIC_CASE(Exchange, Word64)
ATOMIC_CASE(CompareExchange, Word32)
ATOMIC_CASE(CompareExchange, Word64)
#undef ATOMIC_CASE
#define ATOMIC_CASE(name) \
case IrOpcode::kWord32AtomicPair##name: { \
MarkAsWord32(node); \
MarkPairProjectionsAsWord32(node); \
return VisitWord32AtomicPair##name(node); \
}
ATOMIC_CASE(Add)
ATOMIC_CASE(Sub)
ATOMIC_CASE(And)
ATOMIC_CASE(Or)
ATOMIC_CASE(Xor)
ATOMIC_CASE(Exchange)
ATOMIC_CASE(CompareExchange)
#undef ATOMIC_CASE
case IrOpcode::kProtectedLoad: {
LoadRepresentation type = LoadRepresentationOf(node->op());
MarkAsRepresentation(type.representation(), node);
return VisitProtectedLoad(node);
}
case IrOpcode::kSignExtendWord8ToInt32:
return MarkAsWord32(node), VisitSignExtendWord8ToInt32(node);
case IrOpcode::kSignExtendWord16ToInt32:
return MarkAsWord32(node), VisitSignExtendWord16ToInt32(node);
case IrOpcode::kSignExtendWord8ToInt64:
return MarkAsWord64(node), VisitSignExtendWord8ToInt64(node);
case IrOpcode::kSignExtendWord16ToInt64:
return MarkAsWord64(node), VisitSignExtendWord16ToInt64(node);
case IrOpcode::kSignExtendWord32ToInt64:
return MarkAsWord64(node), VisitSignExtendWord32ToInt64(node);
case IrOpcode::kUnsafePointerAdd:
MarkAsRepresentation(MachineType::PointerRepresentation(), node);
return VisitUnsafePointerAdd(node);
case IrOpcode::kF64x2Splat:
return MarkAsSimd128(node), VisitF64x2Splat(node);
case IrOpcode::kF64x2ExtractLane:
return MarkAsFloat64(node), VisitF64x2ExtractLane(node);
case IrOpcode::kF64x2ReplaceLane:
return MarkAsSimd128(node), VisitF64x2ReplaceLane(node);
case IrOpcode::kF64x2Abs:
return MarkAsSimd128(node), VisitF64x2Abs(node);
case IrOpcode::kF64x2Neg:
return MarkAsSimd128(node), VisitF64x2Neg(node);
case IrOpcode::kF64x2Sqrt:
return MarkAsSimd128(node), VisitF64x2Sqrt(node);
case IrOpcode::kF64x2Add:
return MarkAsSimd128(node), VisitF64x2Add(node);
case IrOpcode::kF64x2Sub:
return MarkAsSimd128(node), VisitF64x2Sub(node);
case IrOpcode::kF64x2Mul:
return MarkAsSimd128(node), VisitF64x2Mul(node);
case IrOpcode::kF64x2Div:
return MarkAsSimd128(node), VisitF64x2Div(node);
case IrOpcode::kF64x2Min:
return MarkAsSimd128(node), VisitF64x2Min(node);
case IrOpcode::kF64x2Max:
return MarkAsSimd128(node), VisitF64x2Max(node);
case IrOpcode::kF64x2Eq:
return MarkAsSimd128(node), VisitF64x2Eq(node);
case IrOpcode::kF64x2Ne:
return MarkAsSimd128(node), VisitF64x2Ne(node);
case IrOpcode::kF64x2Lt:
return MarkAsSimd128(node), VisitF64x2Lt(node);
case IrOpcode::kF64x2Le:
return MarkAsSimd128(node), VisitF64x2Le(node);
case IrOpcode::kF64x2Qfma:
return MarkAsSimd128(node), VisitF64x2Qfma(node);
case IrOpcode::kF64x2Qfms:
return MarkAsSimd128(node), VisitF64x2Qfms(node);
case IrOpcode::kF64x2Pmin:
return MarkAsSimd128(node), VisitF64x2Pmin(node);
case IrOpcode::kF64x2Pmax:
return MarkAsSimd128(node), VisitF64x2Pmax(node);
case IrOpcode::kF64x2Ceil:
return MarkAsSimd128(node), VisitF64x2Ceil(node);
case IrOpcode::kF64x2Floor:
return MarkAsSimd128(node), VisitF64x2Floor(node);
case IrOpcode::kF64x2Trunc:
return MarkAsSimd128(node), VisitF64x2Trunc(node);
case IrOpcode::kF64x2NearestInt:
return MarkAsSimd128(node), VisitF64x2NearestInt(node);
case IrOpcode::kF64x2ConvertLowI32x4S:
return MarkAsSimd128(node), VisitF64x2ConvertLowI32x4S(node);
case IrOpcode::kF64x2ConvertLowI32x4U:
return MarkAsSimd128(node), VisitF64x2ConvertLowI32x4U(node);
case IrOpcode::kF64x2PromoteLowF32x4:
return MarkAsSimd128(node), VisitF64x2PromoteLowF32x4(node);
case IrOpcode::kF32x4Splat:
return MarkAsSimd128(node), VisitF32x4Splat(node);
case IrOpcode::kF32x4ExtractLane:
return MarkAsFloat32(node), VisitF32x4ExtractLane(node);
case IrOpcode::kF32x4ReplaceLane:
return MarkAsSimd128(node), VisitF32x4ReplaceLane(node);
case IrOpcode::kF32x4SConvertI32x4:
return MarkAsSimd128(node), VisitF32x4SConvertI32x4(node);
case IrOpcode::kF32x4UConvertI32x4:
return MarkAsSimd128(node), VisitF32x4UConvertI32x4(node);
case IrOpcode::kF32x4Abs:
return MarkAsSimd128(node), VisitF32x4Abs(node);
case IrOpcode::kF32x4Neg:
return MarkAsSimd128(node), VisitF32x4Neg(node);
case IrOpcode::kF32x4Sqrt:
return MarkAsSimd128(node), VisitF32x4Sqrt(node);
case IrOpcode::kF32x4RecipApprox:
return MarkAsSimd128(node), VisitF32x4RecipApprox(node);
case IrOpcode::kF32x4RecipSqrtApprox:
return MarkAsSimd128(node), VisitF32x4RecipSqrtApprox(node);
case IrOpcode::kF32x4Add:
return MarkAsSimd128(node), VisitF32x4Add(node);
case IrOpcode::kF32x4Sub:
return MarkAsSimd128(node), VisitF32x4Sub(node);
case IrOpcode::kF32x4Mul:
return MarkAsSimd128(node), VisitF32x4Mul(node);
case IrOpcode::kF32x4Div:
return MarkAsSimd128(node), VisitF32x4Div(node);
case IrOpcode::kF32x4Min:
return MarkAsSimd128(node), VisitF32x4Min(node);
case IrOpcode::kF32x4Max:
return MarkAsSimd128(node), VisitF32x4Max(node);
case IrOpcode::kF32x4Eq:
return MarkAsSimd128(node), VisitF32x4Eq(node);
case IrOpcode::kF32x4Ne:
return MarkAsSimd128(node), VisitF32x4Ne(node);
case IrOpcode::kF32x4Lt:
return MarkAsSimd128(node), VisitF32x4Lt(node);
case IrOpcode::kF32x4Le:
return MarkAsSimd128(node), VisitF32x4Le(node);
case IrOpcode::kF32x4Qfma:
return MarkAsSimd128(node), VisitF32x4Qfma(node);
case IrOpcode::kF32x4Qfms:
return MarkAsSimd128(node), VisitF32x4Qfms(node);
case IrOpcode::kF32x4Pmin:
return MarkAsSimd128(node), VisitF32x4Pmin(node);
case IrOpcode::kF32x4Pmax:
return MarkAsSimd128(node), VisitF32x4Pmax(node);
case IrOpcode::kF32x4Ceil:
return MarkAsSimd128(node), VisitF32x4Ceil(node);
case IrOpcode::kF32x4Floor:
return MarkAsSimd128(node), VisitF32x4Floor(node);
case IrOpcode::kF32x4Trunc:
return MarkAsSimd128(node), VisitF32x4Trunc(node);
case IrOpcode::kF32x4NearestInt:
return MarkAsSimd128(node), VisitF32x4NearestInt(node);
case IrOpcode::kF32x4DemoteF64x2Zero:
return MarkAsSimd128(node), VisitF32x4DemoteF64x2Zero(node);
case IrOpcode::kI64x2Splat:
return MarkAsSimd128(node), VisitI64x2Splat(node);
case IrOpcode::kI64x2SplatI32Pair:
return MarkAsSimd128(node), VisitI64x2SplatI32Pair(node);
case IrOpcode::kI64x2ExtractLane:
return MarkAsWord64(node), VisitI64x2ExtractLane(node);
case IrOpcode::kI64x2ReplaceLane:
return MarkAsSimd128(node), VisitI64x2ReplaceLane(node);
case IrOpcode::kI64x2ReplaceLaneI32Pair:
return MarkAsSimd128(node), VisitI64x2ReplaceLaneI32Pair(node);
case IrOpcode::kI64x2Abs:
return MarkAsSimd128(node), VisitI64x2Abs(node);
case IrOpcode::kI64x2Neg:
return MarkAsSimd128(node), VisitI64x2Neg(node);
case IrOpcode::kI64x2SConvertI32x4Low:
return MarkAsSimd128(node), VisitI64x2SConvertI32x4Low(node);
case IrOpcode::kI64x2SConvertI32x4High:
return MarkAsSimd128(node), VisitI64x2SConvertI32x4High(node);
case IrOpcode::kI64x2UConvertI32x4Low:
return MarkAsSimd128(node), VisitI64x2UConvertI32x4Low(node);
case IrOpcode::kI64x2UConvertI32x4High:
return MarkAsSimd128(node), VisitI64x2UConvertI32x4High(node);
case IrOpcode::kI64x2BitMask:
return MarkAsWord32(node), VisitI64x2BitMask(node);
case IrOpcode::kI64x2Shl:
return MarkAsSimd128(node), VisitI64x2Shl(node);
case IrOpcode::kI64x2ShrS:
return MarkAsSimd128(node), VisitI64x2ShrS(node);
case IrOpcode::kI64x2Add:
return MarkAsSimd128(node), VisitI64x2Add(node);
case IrOpcode::kI64x2Sub:
return MarkAsSimd128(node), VisitI64x2Sub(node);
case IrOpcode::kI64x2Mul:
return MarkAsSimd128(node), VisitI64x2Mul(node);
case IrOpcode::kI64x2Eq:
return MarkAsSimd128(node), VisitI64x2Eq(node);
case IrOpcode::kI64x2Ne:
return MarkAsSimd128(node), VisitI64x2Ne(node);
case IrOpcode::kI64x2GtS:
return MarkAsSimd128(node), VisitI64x2GtS(node);
case IrOpcode::kI64x2GeS:
return MarkAsSimd128(node), VisitI64x2GeS(node);
case IrOpcode::kI64x2ShrU:
return MarkAsSimd128(node), VisitI64x2ShrU(node);
case IrOpcode::kI64x2ExtMulLowI32x4S:
return MarkAsSimd128(node), VisitI64x2ExtMulLowI32x4S(node);
case IrOpcode::kI64x2ExtMulHighI32x4S:
return MarkAsSimd128(node), VisitI64x2ExtMulHighI32x4S(node);
case IrOpcode::kI64x2ExtMulLowI32x4U:
return MarkAsSimd128(node), VisitI64x2ExtMulLowI32x4U(node);
case IrOpcode::kI64x2ExtMulHighI32x4U:
return MarkAsSimd128(node), VisitI64x2ExtMulHighI32x4U(node);
case IrOpcode::kI32x4Splat:
return MarkAsSimd128(node), VisitI32x4Splat(node);
case IrOpcode::kI32x4ExtractLane:
return MarkAsWord32(node), VisitI32x4ExtractLane(node);
case IrOpcode::kI32x4ReplaceLane:
return MarkAsSimd128(node), VisitI32x4ReplaceLane(node);
case IrOpcode::kI32x4SConvertF32x4:
return MarkAsSimd128(node), VisitI32x4SConvertF32x4(node);
case IrOpcode::kI32x4SConvertI16x8Low:
return MarkAsSimd128(node), VisitI32x4SConvertI16x8Low(node);
case IrOpcode::kI32x4SConvertI16x8High:
return MarkAsSimd128(node), VisitI32x4SConvertI16x8High(node);
case IrOpcode::kI32x4Neg:
return MarkAsSimd128(node), VisitI32x4Neg(node);
case IrOpcode::kI32x4Shl:
return MarkAsSimd128(node), VisitI32x4Shl(node);
case IrOpcode::kI32x4ShrS:
return MarkAsSimd128(node), VisitI32x4ShrS(node);
case IrOpcode::kI32x4Add:
return MarkAsSimd128(node), VisitI32x4Add(node);
case IrOpcode::kI32x4Sub:
return MarkAsSimd128(node), VisitI32x4Sub(node);
case IrOpcode::kI32x4Mul:
return MarkAsSimd128(node), VisitI32x4Mul(node);
case IrOpcode::kI32x4MinS:
return MarkAsSimd128(node), VisitI32x4MinS(node);
case IrOpcode::kI32x4MaxS:
return MarkAsSimd128(node), VisitI32x4MaxS(node);
case IrOpcode::kI32x4Eq:
return MarkAsSimd128(node), VisitI32x4Eq(node);
case IrOpcode::kI32x4Ne:
return MarkAsSimd128(node), VisitI32x4Ne(node);
case IrOpcode::kI32x4GtS:
return MarkAsSimd128(node), VisitI32x4GtS(node);
case IrOpcode::kI32x4GeS:
return MarkAsSimd128(node), VisitI32x4GeS(node);
case IrOpcode::kI32x4UConvertF32x4:
return MarkAsSimd128(node), VisitI32x4UConvertF32x4(node);
case IrOpcode::kI32x4UConvertI16x8Low:
return MarkAsSimd128(node), VisitI32x4UConvertI16x8Low(node);
case IrOpcode::kI32x4UConvertI16x8High:
return MarkAsSimd128(node), VisitI32x4UConvertI16x8High(node);
case IrOpcode::kI32x4ShrU:
return MarkAsSimd128(node), VisitI32x4ShrU(node);
case IrOpcode::kI32x4MinU:
return MarkAsSimd128(node), VisitI32x4MinU(node);
case IrOpcode::kI32x4MaxU:
return MarkAsSimd128(node), VisitI32x4MaxU(node);
case IrOpcode::kI32x4GtU:
return MarkAsSimd128(node), VisitI32x4GtU(node);
case IrOpcode::kI32x4GeU:
return MarkAsSimd128(node), VisitI32x4GeU(node);
case IrOpcode::kI32x4Abs:
return MarkAsSimd128(node), VisitI32x4Abs(node);
case IrOpcode::kI32x4BitMask:
return MarkAsWord32(node), VisitI32x4BitMask(node);
case IrOpcode::kI32x4DotI16x8S:
return MarkAsSimd128(node), VisitI32x4DotI16x8S(node);
case IrOpcode::kI32x4ExtMulLowI16x8S:
return MarkAsSimd128(node), VisitI32x4ExtMulLowI16x8S(node);
case IrOpcode::kI32x4ExtMulHighI16x8S:
return MarkAsSimd128(node), VisitI32x4ExtMulHighI16x8S(node);
case IrOpcode::kI32x4ExtMulLowI16x8U:
return MarkAsSimd128(node), VisitI32x4ExtMulLowI16x8U(node);
case IrOpcode::kI32x4ExtMulHighI16x8U:
return MarkAsSimd128(node), VisitI32x4ExtMulHighI16x8U(node);
case IrOpcode::kI32x4ExtAddPairwiseI16x8S:
return MarkAsSimd128(node), VisitI32x4ExtAddPairwiseI16x8S(node);
case IrOpcode::kI32x4ExtAddPairwiseI16x8U:
return MarkAsSimd128(node), VisitI32x4ExtAddPairwiseI16x8U(node);
case IrOpcode::kI32x4TruncSatF64x2SZero:
return MarkAsSimd128(node), VisitI32x4TruncSatF64x2SZero(node);
case IrOpcode::kI32x4TruncSatF64x2UZero:
return MarkAsSimd128(node), VisitI32x4TruncSatF64x2UZero(node);
case IrOpcode::kI16x8Splat:
return MarkAsSimd128(node), VisitI16x8Splat(node);
case IrOpcode::kI16x8ExtractLaneU:
return MarkAsWord32(node), VisitI16x8ExtractLaneU(node);
case IrOpcode::kI16x8ExtractLaneS:
return MarkAsWord32(node), VisitI16x8ExtractLaneS(node);
case IrOpcode::kI16x8ReplaceLane:
return MarkAsSimd128(node), VisitI16x8ReplaceLane(node);
case IrOpcode::kI16x8SConvertI8x16Low:
return MarkAsSimd128(node), VisitI16x8SConvertI8x16Low(node);
case IrOpcode::kI16x8SConvertI8x16High:
return MarkAsSimd128(node), VisitI16x8SConvertI8x16High(node);
case IrOpcode::kI16x8Neg:
return MarkAsSimd128(node), VisitI16x8Neg(node);
case IrOpcode::kI16x8Shl:
return MarkAsSimd128(node), VisitI16x8Shl(node);
case IrOpcode::kI16x8ShrS:
return MarkAsSimd128(node), VisitI16x8ShrS(node);
case IrOpcode::kI16x8SConvertI32x4:
return MarkAsSimd128(node), VisitI16x8SConvertI32x4(node);
case IrOpcode::kI16x8Add:
return MarkAsSimd128(node), VisitI16x8Add(node);
case IrOpcode::kI16x8AddSatS:
return MarkAsSimd128(node), VisitI16x8AddSatS(node);
case IrOpcode::kI16x8Sub:
return MarkAsSimd128(node), VisitI16x8Sub(node);
case IrOpcode::kI16x8SubSatS:
return MarkAsSimd128(node), VisitI16x8SubSatS(node);
case IrOpcode::kI16x8Mul:
return MarkAsSimd128(node), VisitI16x8Mul(node);
case IrOpcode::kI16x8MinS:
return MarkAsSimd128(node), VisitI16x8MinS(node);
case IrOpcode::kI16x8MaxS:
return MarkAsSimd128(node), VisitI16x8MaxS(node);
case IrOpcode::kI16x8Eq:
return MarkAsSimd128(node), VisitI16x8Eq(node);
case IrOpcode::kI16x8Ne:
return MarkAsSimd128(node), VisitI16x8Ne(node);
case IrOpcode::kI16x8GtS:
return MarkAsSimd128(node), VisitI16x8GtS(node);
case IrOpcode::kI16x8GeS:
return MarkAsSimd128(node), VisitI16x8GeS(node);
case IrOpcode::kI16x8UConvertI8x16Low:
return MarkAsSimd128(node), VisitI16x8UConvertI8x16Low(node);
case IrOpcode::kI16x8UConvertI8x16High:
return MarkAsSimd128(node), VisitI16x8UConvertI8x16High(node);
case IrOpcode::kI16x8ShrU:
return MarkAsSimd128(node), VisitI16x8ShrU(node);
case IrOpcode::kI16x8UConvertI32x4:
return MarkAsSimd128(node), VisitI16x8UConvertI32x4(node);
case IrOpcode::kI16x8AddSatU:
return MarkAsSimd128(node), VisitI16x8AddSatU(node);
case IrOpcode::kI16x8SubSatU:
return MarkAsSimd128(node), VisitI16x8SubSatU(node);
case IrOpcode::kI16x8MinU:
return MarkAsSimd128(node), VisitI16x8MinU(node);
case IrOpcode::kI16x8MaxU:
return MarkAsSimd128(node), VisitI16x8MaxU(node);
case IrOpcode::kI16x8GtU:
return MarkAsSimd128(node), VisitI16x8GtU(node);
case IrOpcode::kI16x8GeU:
return MarkAsSimd128(node), VisitI16x8GeU(node);
case IrOpcode::kI16x8RoundingAverageU:
return MarkAsSimd128(node), VisitI16x8RoundingAverageU(node);
case IrOpcode::kI16x8Q15MulRSatS:
return MarkAsSimd128(node), VisitI16x8Q15MulRSatS(node);
case IrOpcode::kI16x8Abs:
return MarkAsSimd128(node), VisitI16x8Abs(node);
case IrOpcode::kI16x8BitMask:
return MarkAsWord32(node), VisitI16x8BitMask(node);
case IrOpcode::kI16x8ExtMulLowI8x16S:
return MarkAsSimd128(node), VisitI16x8ExtMulLowI8x16S(node);
case IrOpcode::kI16x8ExtMulHighI8x16S:
return MarkAsSimd128(node), VisitI16x8ExtMulHighI8x16S(node);
case IrOpcode::kI16x8ExtMulLowI8x16U:
return MarkAsSimd128(node), VisitI16x8ExtMulLowI8x16U(node);
case IrOpcode::kI16x8ExtMulHighI8x16U:
return MarkAsSimd128(node), VisitI16x8ExtMulHighI8x16U(node);
case IrOpcode::kI16x8ExtAddPairwiseI8x16S:
return MarkAsSimd128(node), VisitI16x8ExtAddPairwiseI8x16S(node);
case IrOpcode::kI16x8ExtAddPairwiseI8x16U:
return MarkAsSimd128(node), VisitI16x8ExtAddPairwiseI8x16U(node);
case IrOpcode::kI8x16Splat:
return MarkAsSimd128(node), VisitI8x16Splat(node);
case IrOpcode::kI8x16ExtractLaneU:
return MarkAsWord32(node), VisitI8x16ExtractLaneU(node);
case IrOpcode::kI8x16ExtractLaneS:
return MarkAsWord32(node), VisitI8x16ExtractLaneS(node);
case IrOpcode::kI8x16ReplaceLane:
return MarkAsSimd128(node), VisitI8x16ReplaceLane(node);
case IrOpcode::kI8x16Neg:
return MarkAsSimd128(node), VisitI8x16Neg(node);
case IrOpcode::kI8x16Shl:
return MarkAsSimd128(node), VisitI8x16Shl(node);
case IrOpcode::kI8x16ShrS:
return MarkAsSimd128(node), VisitI8x16ShrS(node);
case IrOpcode::kI8x16SConvertI16x8:
return MarkAsSimd128(node), VisitI8x16SConvertI16x8(node);
case IrOpcode::kI8x16Add:
return MarkAsSimd128(node), VisitI8x16Add(node);
case IrOpcode::kI8x16AddSatS:
return MarkAsSimd128(node), VisitI8x16AddSatS(node);
case IrOpcode::kI8x16Sub:
return MarkAsSimd128(node), VisitI8x16Sub(node);
case IrOpcode::kI8x16SubSatS:
return MarkAsSimd128(node), VisitI8x16SubSatS(node);
case IrOpcode::kI8x16MinS:
return MarkAsSimd128(node), VisitI8x16MinS(node);
case IrOpcode::kI8x16MaxS:
return MarkAsSimd128(node), VisitI8x16MaxS(node);
case IrOpcode::kI8x16Eq:
return MarkAsSimd128(node), VisitI8x16Eq(node);
case IrOpcode::kI8x16Ne:
return MarkAsSimd128(node), VisitI8x16Ne(node);
case IrOpcode::kI8x16GtS:
return MarkAsSimd128(node), VisitI8x16GtS(node);
case IrOpcode::kI8x16GeS:
return MarkAsSimd128(node), VisitI8x16GeS(node);
case IrOpcode::kI8x16ShrU:
return MarkAsSimd128(node), VisitI8x16ShrU(node);
case IrOpcode::kI8x16UConvertI16x8:
return MarkAsSimd128(node), VisitI8x16UConvertI16x8(node);
case IrOpcode::kI8x16AddSatU:
return MarkAsSimd128(node), VisitI8x16AddSatU(node);
case IrOpcode::kI8x16SubSatU:
return MarkAsSimd128(node), VisitI8x16SubSatU(node);
case IrOpcode::kI8x16MinU:
return MarkAsSimd128(node), VisitI8x16MinU(node);
case IrOpcode::kI8x16MaxU:
return MarkAsSimd128(node), VisitI8x16MaxU(node);
case IrOpcode::kI8x16GtU:
return MarkAsSimd128(node), VisitI8x16GtU(node);
case IrOpcode::kI8x16GeU:
return MarkAsSimd128(node), VisitI8x16GeU(node);
case IrOpcode::kI8x16RoundingAverageU:
return MarkAsSimd128(node), VisitI8x16RoundingAverageU(node);
case IrOpcode::kI8x16Popcnt:
return MarkAsSimd128(node), VisitI8x16Popcnt(node);
case IrOpcode::kI8x16Abs:
return MarkAsSimd128(node), VisitI8x16Abs(node);
case IrOpcode::kI8x16BitMask:
return MarkAsWord32(node), VisitI8x16BitMask(node);
case IrOpcode::kS128Const:
return MarkAsSimd128(node), VisitS128Const(node);
case IrOpcode::kS128Zero:
return MarkAsSimd128(node), VisitS128Zero(node);
case IrOpcode::kS128And:
return MarkAsSimd128(node), VisitS128And(node);
case IrOpcode::kS128Or:
return MarkAsSimd128(node), VisitS128Or(node);
case IrOpcode::kS128Xor:
return MarkAsSimd128(node), VisitS128Xor(node);
case IrOpcode::kS128Not:
return MarkAsSimd128(node), VisitS128Not(node);
case IrOpcode::kS128Select:
return MarkAsSimd128(node), VisitS128Select(node);
case IrOpcode::kS128AndNot:
return MarkAsSimd128(node), VisitS128AndNot(node);
case IrOpcode::kI8x16Swizzle:
return MarkAsSimd128(node), VisitI8x16Swizzle(node);
case IrOpcode::kI8x16Shuffle:
return MarkAsSimd128(node), VisitI8x16Shuffle(node);
case IrOpcode::kV128AnyTrue:
return MarkAsWord32(node), VisitV128AnyTrue(node);
case IrOpcode::kI64x2AllTrue:
return MarkAsWord32(node), VisitI64x2AllTrue(node);
case IrOpcode::kI32x4AllTrue:
return MarkAsWord32(node), VisitI32x4AllTrue(node);
case IrOpcode::kI16x8AllTrue:
return MarkAsWord32(node), VisitI16x8AllTrue(node);
case IrOpcode::kI8x16AllTrue:
return MarkAsWord32(node), VisitI8x16AllTrue(node);
default:
FATAL("Unexpected operator #%d:%s @ node #%d", node->opcode(),
node->op()->mnemonic(), node->id());
}
}
void InstructionSelector::VisitStackPointerGreaterThan(Node* node) {
FlagsContinuation cont =
FlagsContinuation::ForSet(kStackPointerGreaterThanCondition, node);
VisitStackPointerGreaterThan(node, &cont);
}
void InstructionSelector::VisitLoadStackCheckOffset(Node* node) {
OperandGenerator g(this);
Emit(kArchStackCheckOffset, g.DefineAsRegister(node));
}
void InstructionSelector::VisitLoadFramePointer(Node* node) {
OperandGenerator g(this);
Emit(kArchFramePointer, g.DefineAsRegister(node));
}
void InstructionSelector::VisitLoadParentFramePointer(Node* node) {
OperandGenerator g(this);
Emit(kArchParentFramePointer, g.DefineAsRegister(node));
}
void InstructionSelector::VisitFloat64Acos(Node* node) {
VisitFloat64Ieee754Unop(node, kIeee754Float64Acos);
}
void InstructionSelector::VisitFloat64Acosh(Node* node) {
VisitFloat64Ieee754Unop(node, kIeee754Float64Acosh);
}
void InstructionSelector::VisitFloat64Asin(Node* node) {
VisitFloat64Ieee754Unop(node, kIeee754Float64Asin);
}
void InstructionSelector::VisitFloat64Asinh(Node* node) {
VisitFloat64Ieee754Unop(node, kIeee754Float64Asinh);
}
void InstructionSelector::VisitFloat64Atan(Node* node) {
VisitFloat64Ieee754Unop(node, kIeee754Float64Atan);
}
void InstructionSelector::VisitFloat64Atanh(Node* node) {
VisitFloat64Ieee754Unop(node, kIeee754Float64Atanh);
}
void InstructionSelector::VisitFloat64Atan2(Node* node) {
VisitFloat64Ieee754Binop(node, kIeee754Float64Atan2);
}
void InstructionSelector::VisitFloat64Cbrt(Node* node) {
VisitFloat64Ieee754Unop(node, kIeee754Float64Cbrt);
}
void InstructionSelector::VisitFloat64Cos(Node* node) {
VisitFloat64Ieee754Unop(node, kIeee754Float64Cos);
}
void InstructionSelector::VisitFloat64Cosh(Node* node) {
VisitFloat64Ieee754Unop(node, kIeee754Float64Cosh);
}
void InstructionSelector::VisitFloat64Exp(Node* node) {
VisitFloat64Ieee754Unop(node, kIeee754Float64Exp);
}
void InstructionSelector::VisitFloat64Expm1(Node* node) {
VisitFloat64Ieee754Unop(node, kIeee754Float64Expm1);
}
void InstructionSelector::VisitFloat64Log(Node* node) {
VisitFloat64Ieee754Unop(node, kIeee754Float64Log);
}
void InstructionSelector::VisitFloat64Log1p(Node* node) {
VisitFloat64Ieee754Unop(node, kIeee754Float64Log1p);
}
void InstructionSelector::VisitFloat64Log2(Node* node) {
VisitFloat64Ieee754Unop(node, kIeee754Float64Log2);
}
void InstructionSelector::VisitFloat64Log10(Node* node) {
VisitFloat64Ieee754Unop(node, kIeee754Float64Log10);
}
void InstructionSelector::VisitFloat64Pow(Node* node) {
VisitFloat64Ieee754Binop(node, kIeee754Float64Pow);
}
void InstructionSelector::VisitFloat64Sin(Node* node) {
VisitFloat64Ieee754Unop(node, kIeee754Float64Sin);
}
void InstructionSelector::VisitFloat64Sinh(Node* node) {
VisitFloat64Ieee754Unop(node, kIeee754Float64Sinh);
}
void InstructionSelector::VisitFloat64Tan(Node* node) {
VisitFloat64Ieee754Unop(node, kIeee754Float64Tan);
}
void InstructionSelector::VisitFloat64Tanh(Node* node) {
VisitFloat64Ieee754Unop(node, kIeee754Float64Tanh);
}
void InstructionSelector::EmitTableSwitch(
const SwitchInfo& sw, InstructionOperand const& index_operand) {
OperandGenerator g(this);
size_t input_count = 2 + sw.value_range();
DCHECK_LE(sw.value_range(), std::numeric_limits<size_t>::max() - 2);
auto* inputs = zone()->NewArray<InstructionOperand>(input_count);
inputs[0] = index_operand;
InstructionOperand default_operand = g.Label(sw.default_branch());
std::fill(&inputs[1], &inputs[input_count], default_operand);
for (const CaseInfo& c : sw.CasesUnsorted()) {
size_t value = c.value - sw.min_value();
DCHECK_LE(0u, value);
DCHECK_LT(value + 2, input_count);
inputs[value + 2] = g.Label(c.branch);
}
Emit(kArchTableSwitch, 0, nullptr, input_count, inputs, 0, nullptr);
}
void InstructionSelector::EmitBinarySearchSwitch(
const SwitchInfo& sw, InstructionOperand const& value_operand) {
OperandGenerator g(this);
size_t input_count = 2 + sw.case_count() * 2;
DCHECK_LE(sw.case_count(), (std::numeric_limits<size_t>::max() - 2) / 2);
auto* inputs = zone()->NewArray<InstructionOperand>(input_count);
inputs[0] = value_operand;
inputs[1] = g.Label(sw.default_branch());
std::vector<CaseInfo> cases = sw.CasesSortedByValue();
for (size_t index = 0; index < cases.size(); ++index) {
const CaseInfo& c = cases[index];
inputs[index * 2 + 2 + 0] = g.TempImmediate(c.value);
inputs[index * 2 + 2 + 1] = g.Label(c.branch);
}
Emit(kArchBinarySearchSwitch, 0, nullptr, input_count, inputs, 0, nullptr);
}
void InstructionSelector::VisitBitcastTaggedToWord(Node* node) {
EmitIdentity(node);
}
void InstructionSelector::VisitBitcastWordToTagged(Node* node) {
OperandGenerator g(this);
Emit(kArchNop, g.DefineSameAsFirst(node), g.Use(node->InputAt(0)));
}
// 32 bit targets do not implement the following instructions.
#if V8_TARGET_ARCH_32_BIT
void InstructionSelector::VisitWord64And(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitWord64Or(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitWord64Xor(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitWord64Shl(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitWord64Shr(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitWord64Sar(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitWord64Rol(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitWord64Ror(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitWord64Clz(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitWord64Ctz(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitWord64ReverseBits(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitWord64Popcnt(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitWord64Equal(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitInt64Add(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitInt64AddWithOverflow(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitInt64Sub(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitInt64SubWithOverflow(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitInt64Mul(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitInt64Div(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitInt64LessThan(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitInt64LessThanOrEqual(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitUint64Div(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitInt64Mod(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitUint64LessThan(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitUint64LessThanOrEqual(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitUint64Mod(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitBitcastWord32ToWord64(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitChangeInt32ToInt64(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitChangeInt64ToFloat64(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitChangeUint32ToUint64(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitChangeFloat64ToInt64(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitChangeFloat64ToUint64(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitTruncateFloat64ToInt64(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitTryTruncateFloat32ToInt64(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitTryTruncateFloat64ToInt64(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitTryTruncateFloat32ToUint64(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitTryTruncateFloat64ToUint64(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitTruncateInt64ToInt32(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitRoundInt64ToFloat32(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitRoundInt64ToFloat64(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitRoundUint64ToFloat32(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitRoundUint64ToFloat64(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitBitcastFloat64ToInt64(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitBitcastInt64ToFloat64(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitSignExtendWord8ToInt64(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitSignExtendWord16ToInt64(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitSignExtendWord32ToInt64(Node* node) {
UNIMPLEMENTED();
}
#endif // V8_TARGET_ARCH_32_BIT
// 64 bit targets do not implement the following instructions.
#if V8_TARGET_ARCH_64_BIT
void InstructionSelector::VisitInt32PairAdd(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitInt32PairSub(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitInt32PairMul(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitWord32PairShl(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitWord32PairShr(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitWord32PairSar(Node* node) { UNIMPLEMENTED(); }
#endif // V8_TARGET_ARCH_64_BIT
#if !V8_TARGET_ARCH_IA32 && !V8_TARGET_ARCH_ARM && !V8_TARGET_ARCH_MIPS
void InstructionSelector::VisitWord32AtomicPairLoad(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitWord32AtomicPairStore(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitWord32AtomicPairAdd(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitWord32AtomicPairSub(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitWord32AtomicPairAnd(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitWord32AtomicPairOr(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitWord32AtomicPairXor(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitWord32AtomicPairExchange(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitWord32AtomicPairCompareExchange(Node* node) {
UNIMPLEMENTED();
}
#endif // !V8_TARGET_ARCH_IA32 && !V8_TARGET_ARCH_ARM && !V8_TARGET_ARCH_MIPS
#if !V8_TARGET_ARCH_X64 && !V8_TARGET_ARCH_ARM64 && !V8_TARGET_ARCH_MIPS64 && \
!V8_TARGET_ARCH_S390 && !V8_TARGET_ARCH_PPC64 && !V8_TARGET_ARCH_RISCV64
void InstructionSelector::VisitWord64AtomicLoad(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitWord64AtomicStore(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitWord64AtomicAdd(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitWord64AtomicSub(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitWord64AtomicAnd(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitWord64AtomicOr(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitWord64AtomicXor(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitWord64AtomicExchange(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitWord64AtomicCompareExchange(Node* node) {
UNIMPLEMENTED();
}
#endif // !V8_TARGET_ARCH_X64 && !V8_TARGET_ARCH_ARM64 && !V8_TARGET_ARCH_PPC64
// !V8_TARGET_ARCH_MIPS64 && !V8_TARGET_ARCH_S390 &&
// !V8_TARGET_ARCH_RISCV64
#if !V8_TARGET_ARCH_IA32 && !V8_TARGET_ARCH_ARM
// This is only needed on 32-bit to split the 64-bit value into two operands.
void InstructionSelector::VisitI64x2SplatI32Pair(Node* node) {
UNIMPLEMENTED();
}
void InstructionSelector::VisitI64x2ReplaceLaneI32Pair(Node* node) {
UNIMPLEMENTED();
}
#endif // !V8_TARGET_ARCH_IA32
#if !V8_TARGET_ARCH_X64 && !V8_TARGET_ARCH_S390X && !V8_TARGET_ARCH_PPC64
#if !V8_TARGET_ARCH_ARM64
#if !V8_TARGET_ARCH_MIPS64
void InstructionSelector::VisitI64x2Splat(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitI64x2ExtractLane(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitI64x2ReplaceLane(Node* node) { UNIMPLEMENTED(); }
#endif // !V8_TARGET_ARCH_MIPS64
void InstructionSelector::VisitF64x2Qfma(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitF64x2Qfms(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitF32x4Qfma(Node* node) { UNIMPLEMENTED(); }
void InstructionSelector::VisitF32x4Qfms(Node* node) { UNIMPLEMENTED(); }
#endif // !V8_TARGET_ARCH_ARM64
#endif // !V8_TARGET_ARCH_X64 && !V8_TARGET_ARCH_S390X && !V8_TARGET_ARCH_PPC64
void InstructionSelector::VisitFinishRegion(Node* node) { EmitIdentity(node); }
void InstructionSelector::VisitParameter(Node* node) {
OperandGenerator g(this);
int index = ParameterIndexOf(node->op());
InstructionOperand op =
linkage()->ParameterHasSecondaryLocation(index)
? g.DefineAsDualLocation(
node, linkage()->GetParameterLocation(index),
linkage()->GetParameterSecondaryLocation(index))
: g.DefineAsLocation(node, linkage()->GetParameterLocation(index));
Emit(kArchNop, op);
}
namespace {
LinkageLocation ExceptionLocation() {
return LinkageLocation::ForRegister(kReturnRegister0.code(),
MachineType::IntPtr());
}
constexpr InstructionCode EncodeCallDescriptorFlags(
InstructionCode opcode, CallDescriptor::Flags flags) {
// Note: Not all bits of `flags` are preserved.
STATIC_ASSERT(CallDescriptor::kFlagsBitsEncodedInInstructionCode ==
MiscField::kSize);
DCHECK(Instruction::IsCallWithDescriptorFlags(opcode));
return opcode | MiscField::encode(flags & MiscField::kMax);
}
} // namespace
void InstructionSelector::VisitIfException(Node* node) {
OperandGenerator g(this);
DCHECK_EQ(IrOpcode::kCall, node->InputAt(1)->opcode());
Emit(kArchNop, g.DefineAsLocation(node, ExceptionLocation()));
}
void InstructionSelector::VisitOsrValue(Node* node) {
OperandGenerator g(this);
int index = OsrValueIndexOf(node->op());
Emit(kArchNop,
g.DefineAsLocation(node, linkage()->GetOsrValueLocation(index)));
}
void InstructionSelector::VisitPhi(Node* node) {
const int input_count = node->op()->ValueInputCount();
DCHECK_EQ(input_count, current_block_->PredecessorCount());
PhiInstruction* phi = instruction_zone()->New<PhiInstruction>(
instruction_zone(), GetVirtualRegister(node),
static_cast<size_t>(input_count));
sequence()
->InstructionBlockAt(RpoNumber::FromInt(current_block_->rpo_number()))
->AddPhi(phi);
for (int i = 0; i < input_count; ++i) {
Node* const input = node->InputAt(i);
MarkAsUsed(input);
phi->SetInput(static_cast<size_t>(i), GetVirtualRegister(input));
}
}
void InstructionSelector::VisitProjection(Node* node) {
OperandGenerator g(this);
Node* value = node->InputAt(0);
switch (value->opcode()) {
case IrOpcode::kInt32AddWithOverflow:
case IrOpcode::kInt32SubWithOverflow:
case IrOpcode::kInt32MulWithOverflow:
case IrOpcode::kInt64AddWithOverflow:
case IrOpcode::kInt64SubWithOverflow:
case IrOpcode::kTryTruncateFloat32ToInt64:
case IrOpcode::kTryTruncateFloat64ToInt64:
case IrOpcode::kTryTruncateFloat32ToUint64:
case IrOpcode::kTryTruncateFloat64ToUint64:
case IrOpcode::kInt32PairAdd:
case IrOpcode::kInt32PairSub:
case IrOpcode::kInt32PairMul:
case IrOpcode::kWord32PairShl:
case IrOpcode::kWord32PairShr:
case IrOpcode::kWord32PairSar:
case IrOpcode::kInt32AbsWithOverflow:
case IrOpcode::kInt64AbsWithOverflow:
if (ProjectionIndexOf(node->op()) == 0u) {
Emit(kArchNop, g.DefineSameAsFirst(node), g.Use(value));
} else {
DCHECK_EQ(1u, ProjectionIndexOf(node->op()));
MarkAsUsed(value);
}
break;
default:
break;
}
}
void InstructionSelector::VisitConstant(Node* node) {
// We must emit a NOP here because every live range needs a defining
// instruction in the register allocator.
OperandGenerator g(this);
Emit(kArchNop, g.DefineAsConstant(node));
}
void InstructionSelector::UpdateMaxPushedArgumentCount(size_t count) {
*max_pushed_argument_count_ = std::max(count, *max_pushed_argument_count_);
}
void InstructionSelector::VisitCall(Node* node, BasicBlock* handler) {
OperandGenerator g(this);
auto call_descriptor = CallDescriptorOf(node->op());
SaveFPRegsMode mode = call_descriptor->NeedsCallerSavedFPRegisters()
? SaveFPRegsMode::kSave
: SaveFPRegsMode::kIgnore;
if (call_descriptor->NeedsCallerSavedRegisters()) {
Emit(kArchSaveCallerRegisters | MiscField::encode(static_cast<int>(mode)),
g.NoOutput());
}
FrameStateDescriptor* frame_state_descriptor = nullptr;
if (call_descriptor->NeedsFrameState()) {
frame_state_descriptor = GetFrameStateDescriptor(FrameState{
node->InputAt(static_cast<int>(call_descriptor->InputCount()))});
}
CallBuffer buffer(zone(), call_descriptor, frame_state_descriptor);
CallDescriptor::Flags flags = call_descriptor->flags();
// Compute InstructionOperands for inputs and outputs.
// TODO(turbofan): on some architectures it's probably better to use
// the code object in a register if there are multiple uses of it.
// Improve constant pool and the heuristics in the register allocator
// for where to emit constants.
CallBufferFlags call_buffer_flags(kCallCodeImmediate | kCallAddressImmediate);
InitializeCallBuffer(node, &buffer, call_buffer_flags);
EmitPrepareArguments(&buffer.pushed_nodes, call_descriptor, node);
UpdateMaxPushedArgumentCount(buffer.pushed_nodes.size());
// Pass label of exception handler block.
if (handler) {
DCHECK_EQ(IrOpcode::kIfException, handler->front()->opcode());
flags |= CallDescriptor::kHasExceptionHandler;
buffer.instruction_args.push_back(g.Label(handler));
}
// Select the appropriate opcode based on the call type.
InstructionCode opcode;
switch (call_descriptor->kind()) {
case CallDescriptor::kCallAddress: {
int misc_field = static_cast<int>(call_descriptor->ParameterCount());
#if ABI_USES_FUNCTION_DESCRIPTORS
// Highest misc_field bit is used on AIX to indicate if a CFunction call
// has function descriptor or not.
STATIC_ASSERT(MiscField::kSize == kHasFunctionDescriptorBitShift + 1);
if (!call_descriptor->NoFunctionDescriptor()) {
misc_field |= 1 << kHasFunctionDescriptorBitShift;
}
#endif
opcode = kArchCallCFunction | MiscField::encode(misc_field);
break;
}
case CallDescriptor::kCallCodeObject:
opcode = EncodeCallDescriptorFlags(kArchCallCodeObject, flags);
break;
case CallDescriptor::kCallJSFunction:
opcode = EncodeCallDescriptorFlags(kArchCallJSFunction, flags);
break;
#if V8_ENABLE_WEBASSEMBLY
case CallDescriptor::kCallWasmCapiFunction:
case CallDescriptor::kCallWasmFunction:
case CallDescriptor::kCallWasmImportWrapper:
opcode = EncodeCallDescriptorFlags(kArchCallWasmFunction, flags);
break;
#endif // V8_ENABLE_WEBASSEMBLY
case CallDescriptor::kCallBuiltinPointer:
opcode = EncodeCallDescriptorFlags(kArchCallBuiltinPointer, flags);
break;
}
// Emit the call instruction.
size_t const output_count = buffer.outputs.size();
auto* outputs = output_count ? &buffer.outputs.front() : nullptr;
Instruction* call_instr =
Emit(opcode, output_count, outputs, buffer.instruction_args.size(),
&buffer.instruction_args.front());
if (instruction_selection_failed()) return;
call_instr->MarkAsCall();
EmitPrepareResults(&(buffer.output_nodes), call_descriptor, node);
if (call_descriptor->NeedsCallerSavedRegisters()) {
Emit(
kArchRestoreCallerRegisters | MiscField::encode(static_cast<int>(mode)),
g.NoOutput());
}
}
void InstructionSelector::VisitTailCall(Node* node) {
OperandGenerator g(this);
auto caller = linkage()->GetIncomingDescriptor();
auto callee = CallDescriptorOf(node->op());
DCHECK(caller->CanTailCall(callee));
const int stack_param_delta = callee->GetStackParameterDelta(caller);
CallBuffer buffer(zone(), callee, nullptr);
// Compute InstructionOperands for inputs and outputs.
CallBufferFlags flags(kCallCodeImmediate | kCallTail);
if (IsTailCallAddressImmediate()) {
flags |= kCallAddressImmediate;
}
if (callee->flags() & CallDescriptor::kFixedTargetRegister) {
flags |= kCallFixedTargetRegister;
}
InitializeCallBuffer(node, &buffer, flags, stack_param_delta);
UpdateMaxPushedArgumentCount(stack_param_delta);
// Select the appropriate opcode based on the call type.
InstructionCode opcode;
InstructionOperandVector temps(zone());
switch (callee->kind()) {
case CallDescriptor::kCallCodeObject:
opcode = kArchTailCallCodeObject;
break;
case CallDescriptor::kCallAddress:
DCHECK(!caller->IsJSFunctionCall());
opcode = kArchTailCallAddress;
break;
#if V8_ENABLE_WEBASSEMBLY
case CallDescriptor::kCallWasmFunction:
DCHECK(!caller->IsJSFunctionCall());
opcode = kArchTailCallWasm;
break;
#endif // V8_ENABLE_WEBASSEMBLY
default:
UNREACHABLE();
}
opcode = EncodeCallDescriptorFlags(opcode, callee->flags());
Emit(kArchPrepareTailCall, g.NoOutput());
// Add an immediate operand that represents the offset to the first slot that
// is unused with respect to the stack pointer that has been updated for the
// tail call instruction. Backends that pad arguments can write the padding
// value at this offset from the stack.
const int optional_padding_offset =
callee->GetOffsetToFirstUnusedStackSlot() - 1;
buffer.instruction_args.push_back(g.TempImmediate(optional_padding_offset));
const int first_unused_slot_offset =
kReturnAddressStackSlotCount + stack_param_delta;
buffer.instruction_args.push_back(g.TempImmediate(first_unused_slot_offset));
// Emit the tailcall instruction.
Emit(opcode, 0, nullptr, buffer.instruction_args.size(),
&buffer.instruction_args.front(), temps.size(),
temps.empty() ? nullptr : &temps.front());
}
void InstructionSelector::VisitGoto(BasicBlock* target) {
// jump to the next block.
OperandGenerator g(this);
Emit(kArchJmp, g.NoOutput(), g.Label(target));
}
void InstructionSelector::VisitReturn(Node* ret) {
OperandGenerator g(this);
const int input_count = linkage()->GetIncomingDescriptor()->ReturnCount() == 0
? 1
: ret->op()->ValueInputCount();
DCHECK_GE(input_count, 1);
auto value_locations = zone()->NewArray<InstructionOperand>(input_count);
Node* pop_count = ret->InputAt(0);
value_locations[0] = (pop_count->opcode() == IrOpcode::kInt32Constant ||
pop_count->opcode() == IrOpcode::kInt64Constant)
? g.UseImmediate(pop_count)
: g.UseRegister(pop_count);
for (int i = 1; i < input_count; ++i) {
value_locations[i] =
g.UseLocation(ret->InputAt(i), linkage()->GetReturnLocation(i - 1));
}
Emit(kArchRet, 0, nullptr, input_count, value_locations);
}
void InstructionSelector::VisitBranch(Node* branch, BasicBlock* tbranch,
BasicBlock* fbranch) {
FlagsContinuation cont =
FlagsContinuation::ForBranch(kNotEqual, tbranch, fbranch);
VisitWordCompareZero(branch, branch->InputAt(0), &cont);
}
void InstructionSelector::VisitDeoptimizeIf(Node* node) {
DeoptimizeParameters p = DeoptimizeParametersOf(node->op());
FlagsContinuation cont = FlagsContinuation::ForDeoptimize(
kNotEqual, p.kind(), p.reason(), node->id(), p.feedback(),
node->InputAt(1));
VisitWordCompareZero(node, node->InputAt(0), &cont);
}
void InstructionSelector::VisitDeoptimizeUnless(Node* node) {
DeoptimizeParameters p = DeoptimizeParametersOf(node->op());
FlagsContinuation cont = FlagsContinuation::ForDeoptimize(
kEqual, p.kind(), p.reason(), node->id(), p.feedback(), node->InputAt(1));
VisitWordCompareZero(node, node->InputAt(0), &cont);
}
void InstructionSelector::VisitSelect(Node* node) {
FlagsContinuation cont =
FlagsContinuation::ForSelect(kNotEqual, node,
node->InputAt(1), node->InputAt(2));
VisitWordCompareZero(node, node->InputAt(0), &cont);
}
void InstructionSelector::VisitDynamicCheckMapsWithDeoptUnless(Node* node) {
OperandGenerator g(this);
DynamicCheckMapsWithDeoptUnlessNode n(node);
DeoptimizeParameters p = DeoptimizeParametersOf(node->op());
CallDescriptor* call_descriptor;
ZoneVector<InstructionOperand> dynamic_check_args(zone());
if (p.reason() == DeoptimizeReason::kDynamicCheckMaps) {
DynamicCheckMapsDescriptor descriptor;
// Note: We use Operator::kNoDeopt here because this builtin does not lazy
// deoptimize (which is the meaning of Operator::kNoDeopt), even though it
// can eagerly deoptimize.
call_descriptor = Linkage::GetStubCallDescriptor(
zone(), descriptor, descriptor.GetStackParameterCount(),
CallDescriptor::kNoFlags, Operator::kNoDeopt | Operator::kNoThrow);
dynamic_check_args.insert(
dynamic_check_args.end(),
{g.UseLocation(n.map(), call_descriptor->GetInputLocation(1)),
g.UseImmediate(n.slot()), g.UseImmediate(n.handler())});
} else {
DCHECK_EQ(p.reason(), DeoptimizeReason::kDynamicCheckMapsInlined);
DynamicCheckMapsWithFeedbackVectorDescriptor descriptor;
call_descriptor = Linkage::GetStubCallDescriptor(
zone(), descriptor, descriptor.GetStackParameterCount(),
CallDescriptor::kNoFlags, Operator::kNoDeopt | Operator::kNoThrow);
dynamic_check_args.insert(
dynamic_check_args.end(),
{g.UseLocation(n.map(), call_descriptor->GetInputLocation(1)),
g.UseLocation(n.feedback_vector(),
call_descriptor->GetInputLocation(2)),
g.UseImmediate(n.slot()), g.UseImmediate(n.handler())});
}
FlagsContinuation cont = FlagsContinuation::ForDeoptimize(
kEqual, p.kind(), p.reason(), node->id(), p.feedback(), n.frame_state(),
dynamic_check_args.data(), static_cast<int>(dynamic_check_args.size()));
VisitWordCompareZero(node, n.condition(), &cont);
}
void InstructionSelector::VisitTrapIf(Node* node, TrapId trap_id) {
FlagsContinuation cont =
FlagsContinuation::ForTrap(kNotEqual, trap_id, node->InputAt(1));
VisitWordCompareZero(node, node->InputAt(0), &cont);
}
void InstructionSelector::VisitTrapUnless(Node* node, TrapId trap_id) {
FlagsContinuation cont =
FlagsContinuation::ForTrap(kEqual, trap_id, node->InputAt(1));
VisitWordCompareZero(node, node->InputAt(0), &cont);
}
void InstructionSelector::EmitIdentity(Node* node) {
MarkAsUsed(node->InputAt(0));
SetRename(node, node->InputAt(0));
}
void InstructionSelector::VisitDeoptimize(DeoptimizeKind kind,
DeoptimizeReason reason,
NodeId node_id,
FeedbackSource const& feedback,
FrameState frame_state) {
InstructionOperandVector args(instruction_zone());
AppendDeoptimizeArguments(&args, kind, reason, node_id, feedback,
frame_state);
Emit(kArchDeoptimize, 0, nullptr, args.size(), &args.front(), 0, nullptr);
}
void InstructionSelector::VisitThrow(Node* node) {
OperandGenerator g(this);
Emit(kArchThrowTerminator, g.NoOutput());
}
void InstructionSelector::VisitDebugBreak(Node* node) {
OperandGenerator g(this);
Emit(kArchDebugBreak, g.NoOutput());
}
void InstructionSelector::VisitUnreachable(Node* node) {
OperandGenerator g(this);
Emit(kArchDebugBreak, g.NoOutput());
}
void InstructionSelector::VisitStaticAssert(Node* node) {
Node* asserted = node->InputAt(0);
UnparkedScopeIfNeeded scope(broker_);
AllowHandleDereference allow_handle_dereference;
asserted->Print(4);
FATAL(
"Expected Turbofan static assert to hold, but got non-true input:\n %s",
StaticAssertSourceOf(node->op()));
}
void InstructionSelector::VisitDeadValue(Node* node) {
OperandGenerator g(this);
MarkAsRepresentation(DeadValueRepresentationOf(node->op()), node);
Emit(kArchDebugBreak, g.DefineAsConstant(node));
}
void InstructionSelector::VisitComment(Node* node) {
OperandGenerator g(this);
InstructionOperand operand(g.UseImmediate(node));
Emit(kArchComment, 0, nullptr, 1, &operand);
}
void InstructionSelector::VisitUnsafePointerAdd(Node* node) {
#if V8_TARGET_ARCH_64_BIT
VisitInt64Add(node);
#else // V8_TARGET_ARCH_64_BIT
VisitInt32Add(node);
#endif // V8_TARGET_ARCH_64_BIT
}
void InstructionSelector::VisitRetain(Node* node) {
OperandGenerator g(this);
Emit(kArchNop, g.NoOutput(), g.UseAny(node->InputAt(0)));
}
bool InstructionSelector::CanProduceSignalingNaN(Node* node) {
// TODO(jarin) Improve the heuristic here.
if (node->opcode() == IrOpcode::kFloat64Add ||
node->opcode() == IrOpcode::kFloat64Sub ||
node->opcode() == IrOpcode::kFloat64Mul) {
return false;
}
return true;
}
#if V8_TARGET_ARCH_64_BIT
bool InstructionSelector::ZeroExtendsWord32ToWord64(Node* node,
int recursion_depth) {
// To compute whether a Node sets its upper 32 bits to zero, there are three
// cases.
// 1. Phi node, with a computed result already available in phi_states_:
// Read the value from phi_states_.
// 2. Phi node, with no result available in phi_states_ yet:
// Recursively check its inputs, and store the result in phi_states_.
// 3. Anything else:
// Call the architecture-specific ZeroExtendsWord32ToWord64NoPhis.
// Limit recursion depth to avoid the possibility of stack overflow on very
// large functions.
const int kMaxRecursionDepth = 100;
if (node->opcode() == IrOpcode::kPhi) {
Upper32BitsState current = phi_states_[node->id()];
if (current != Upper32BitsState::kNotYetChecked) {
return current == Upper32BitsState::kUpperBitsGuaranteedZero;
}
// If further recursion is prevented, we can't make any assumptions about
// the output of this phi node.
if (recursion_depth >= kMaxRecursionDepth) {
return false;
}
// Mark the current node so that we skip it if we recursively visit it
// again. Or, said differently, we compute a largest fixed-point so we can
// be optimistic when we hit cycles.
phi_states_[node->id()] = Upper32BitsState::kUpperBitsGuaranteedZero;
int input_count = node->op()->ValueInputCount();
for (int i = 0; i < input_count; ++i) {
Node* input = NodeProperties::GetValueInput(node, i);
if (!ZeroExtendsWord32ToWord64(input, recursion_depth + 1)) {
phi_states_[node->id()] = Upper32BitsState::kNoGuarantee;
return false;
}
}
return true;
}
return ZeroExtendsWord32ToWord64NoPhis(node);
}
#endif // V8_TARGET_ARCH_64_BIT
namespace {
FrameStateDescriptor* GetFrameStateDescriptorInternal(Zone* zone,
FrameState state) {
DCHECK_EQ(IrOpcode::kFrameState, state->opcode());
DCHECK_EQ(FrameState::kFrameStateInputCount, state->InputCount());
const FrameStateInfo& state_info = FrameStateInfoOf(state->op());
int parameters = state_info.parameter_count();
int locals = state_info.local_count();
int stack = state_info.type() == FrameStateType::kUnoptimizedFunction ? 1 : 0;
FrameStateDescriptor* outer_state = nullptr;
if (state.outer_frame_state()->opcode() == IrOpcode::kFrameState) {
outer_state = GetFrameStateDescriptorInternal(
zone, FrameState{state.outer_frame_state()});
}
#if V8_ENABLE_WEBASSEMBLY
if (state_info.type() == FrameStateType::kJSToWasmBuiltinContinuation) {
auto function_info = static_cast<const JSToWasmFrameStateFunctionInfo*>(
state_info.function_info());
return zone->New<JSToWasmFrameStateDescriptor>(
zone, state_info.type(), state_info.bailout_id(),
state_info.state_combine(), parameters, locals, stack,
state_info.shared_info(), outer_state, function_info->signature());
}
#endif // V8_ENABLE_WEBASSEMBLY
return zone->New<FrameStateDescriptor>(
zone, state_info.type(), state_info.bailout_id(),
state_info.state_combine(), parameters, locals, stack,
state_info.shared_info(), outer_state);
}
} // namespace
FrameStateDescriptor* InstructionSelector::GetFrameStateDescriptor(
FrameState state) {
auto* desc = GetFrameStateDescriptorInternal(instruction_zone(), state);
*max_unoptimized_frame_height_ =
std::max(*max_unoptimized_frame_height_,
desc->total_conservative_frame_size_in_bytes());
return desc;
}
#if V8_ENABLE_WEBASSEMBLY
void InstructionSelector::CanonicalizeShuffle(Node* node, uint8_t* shuffle,
bool* is_swizzle) {
// Get raw shuffle indices.
memcpy(shuffle, S128ImmediateParameterOf(node->op()).data(), kSimd128Size);
bool needs_swap;
bool inputs_equal = GetVirtualRegister(node->InputAt(0)) ==
GetVirtualRegister(node->InputAt(1));
wasm::SimdShuffle::CanonicalizeShuffle(inputs_equal, shuffle, &needs_swap,
is_swizzle);
if (needs_swap) {
SwapShuffleInputs(node);
}
// Duplicate the first input; for some shuffles on some architectures, it's
// easiest to implement a swizzle as a shuffle so it might be used.
if (*is_swizzle) {
node->ReplaceInput(1, node->InputAt(0));
}
}
// static
void InstructionSelector::SwapShuffleInputs(Node* node) {
Node* input0 = node->InputAt(0);
Node* input1 = node->InputAt(1);
node->ReplaceInput(0, input1);
node->ReplaceInput(1, input0);
}
#endif // V8_ENABLE_WEBASSEMBLY
} // namespace compiler
} // namespace internal
} // namespace v8
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