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wasm-compiler.cc
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// Copyright 2015 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/compiler/wasm-compiler.h"
#include <memory>
#include "src/base/optional.h"
#include "src/base/platform/elapsed-timer.h"
#include "src/base/platform/platform.h"
#include "src/base/small-vector.h"
#include "src/base/v8-fallthrough.h"
#include "src/codegen/assembler-inl.h"
#include "src/codegen/assembler.h"
#include "src/codegen/code-factory.h"
#include "src/codegen/compiler.h"
#include "src/codegen/interface-descriptors.h"
#include "src/codegen/optimized-compilation-info.h"
#include "src/compiler/backend/code-generator.h"
#include "src/compiler/backend/instruction-selector.h"
#include "src/compiler/common-operator.h"
#include "src/compiler/compiler-source-position-table.h"
#include "src/compiler/diamond.h"
#include "src/compiler/graph-assembler.h"
#include "src/compiler/graph-visualizer.h"
#include "src/compiler/graph.h"
#include "src/compiler/int64-lowering.h"
#include "src/compiler/linkage.h"
#include "src/compiler/machine-operator.h"
#include "src/compiler/node-matchers.h"
#include "src/compiler/node-origin-table.h"
#include "src/compiler/node-properties.h"
#include "src/compiler/pipeline.h"
#include "src/compiler/simd-scalar-lowering.h"
#include "src/compiler/zone-stats.h"
#include "src/execution/isolate-inl.h"
#include "src/heap/factory.h"
#include "src/logging/counters.h"
#include "src/logging/log.h"
#include "src/objects/heap-number.h"
#include "src/roots/roots.h"
#include "src/tracing/trace-event.h"
#include "src/trap-handler/trap-handler.h"
#include "src/utils/vector.h"
#include "src/wasm/function-body-decoder-impl.h"
#include "src/wasm/function-compiler.h"
#include "src/wasm/graph-builder-interface.h"
#include "src/wasm/jump-table-assembler.h"
#include "src/wasm/memory-tracing.h"
#include "src/wasm/object-access.h"
#include "src/wasm/wasm-code-manager.h"
#include "src/wasm/wasm-constants.h"
#include "src/wasm/wasm-limits.h"
#include "src/wasm/wasm-linkage.h"
#include "src/wasm/wasm-module.h"
#include "src/wasm/wasm-objects-inl.h"
#include "src/wasm/wasm-opcodes-inl.h"
namespace v8 {
namespace internal {
namespace compiler {
namespace {
#define FATAL_UNSUPPORTED_OPCODE(opcode) \
FATAL("Unsupported opcode 0x%x:%s", (opcode), \
wasm::WasmOpcodes::OpcodeName(opcode));
MachineType assert_size(int expected_size, MachineType type) {
DCHECK_EQ(expected_size, ElementSizeInBytes(type.representation()));
return type;
}
#define WASM_INSTANCE_OBJECT_SIZE(name) \
(WasmInstanceObject::k##name##OffsetEnd - \
WasmInstanceObject::k##name##Offset + 1) // NOLINT(whitespace/indent)
#define WASM_INSTANCE_OBJECT_OFFSET(name) \
wasm::ObjectAccess::ToTagged(WasmInstanceObject::k##name##Offset)
// We would like to use gasm_->Call() to implement this macro,
// but this doesn't work currently when we try to call it from functions
// which set IfSuccess/IfFailure control paths (e.g. within Throw()).
// TODO(manoskouk): Maybe clean this up at some point?
#define CALL_BUILTIN(name, ...) \
SetEffect(graph()->NewNode( \
mcgraph()->common()->Call(GetBuiltinCallDescriptor<name##Descriptor>( \
this, StubCallMode::kCallBuiltinPointer)), \
GetBuiltinPointerTarget(Builtins::k##name), ##__VA_ARGS__, effect(), \
control()))
#define LOAD_INSTANCE_FIELD(name, type) \
gasm_->Load(assert_size(WASM_INSTANCE_OBJECT_SIZE(name), type), \
instance_node_.get(), WASM_INSTANCE_OBJECT_OFFSET(name))
#define LOAD_FULL_POINTER(base_pointer, byte_offset) \
gasm_->Load(MachineType::Pointer(), base_pointer, byte_offset)
#define LOAD_TAGGED_POINTER(base_pointer, byte_offset) \
gasm_->Load(MachineType::TaggedPointer(), base_pointer, byte_offset)
#define LOAD_TAGGED_ANY(base_pointer, byte_offset) \
gasm_->Load(MachineType::AnyTagged(), base_pointer, byte_offset)
#define LOAD_FIXED_ARRAY_SLOT(array_node, index, type) \
gasm_->Load(type, array_node, \
wasm::ObjectAccess::ElementOffsetInTaggedFixedArray(index))
#define LOAD_FIXED_ARRAY_SLOT_SMI(array_node, index) \
LOAD_FIXED_ARRAY_SLOT(array_node, index, MachineType::TaggedSigned())
#define LOAD_FIXED_ARRAY_SLOT_PTR(array_node, index) \
LOAD_FIXED_ARRAY_SLOT(array_node, index, MachineType::TaggedPointer())
#define LOAD_FIXED_ARRAY_SLOT_ANY(array_node, index) \
LOAD_FIXED_ARRAY_SLOT(array_node, index, MachineType::AnyTagged())
#define STORE_RAW(base, offset, val, rep, barrier) \
STORE_RAW_NODE_OFFSET(base, gasm_->Int32Constant(offset), val, rep, barrier)
#define STORE_RAW_NODE_OFFSET(base, node_offset, val, rep, barrier) \
gasm_->Store(StoreRepresentation(rep, barrier), base, node_offset, val)
// This can be used to store tagged Smi values only.
#define STORE_FIXED_ARRAY_SLOT_SMI(array_node, index, value) \
STORE_RAW(array_node, \
wasm::ObjectAccess::ElementOffsetInTaggedFixedArray(index), value, \
MachineRepresentation::kTaggedSigned, kNoWriteBarrier)
// This can be used to store any tagged (Smi and HeapObject) value.
#define STORE_FIXED_ARRAY_SLOT_ANY(array_node, index, value) \
STORE_RAW(array_node, \
wasm::ObjectAccess::ElementOffsetInTaggedFixedArray(index), value, \
MachineRepresentation::kTagged, kFullWriteBarrier)
void MergeControlToEnd(MachineGraph* mcgraph, Node* node) {
Graph* g = mcgraph->graph();
if (g->end()) {
NodeProperties::MergeControlToEnd(g, mcgraph->common(), node);
} else {
g->SetEnd(g->NewNode(mcgraph->common()->End(1), node));
}
}
bool ContainsSimd(const wasm::FunctionSig* sig) {
for (auto type : sig->all()) {
if (type == wasm::kWasmS128) return true;
}
return false;
}
bool ContainsInt64(const wasm::FunctionSig* sig) {
for (auto type : sig->all()) {
if (type == wasm::kWasmI64) return true;
}
return false;
}
template <typename BuiltinDescriptor>
CallDescriptor* GetBuiltinCallDescriptor(WasmGraphBuilder* builder,
StubCallMode stub_mode) {
BuiltinDescriptor interface_descriptor;
return Linkage::GetStubCallDescriptor(
builder->mcgraph()->zone(), // zone
interface_descriptor, // descriptor
interface_descriptor.GetStackParameterCount(), // stack parameter count
CallDescriptor::kNoFlags, // flags
Operator::kNoProperties, // properties
stub_mode); // stub call mode
}
} // namespace
class WasmGraphAssembler : public GraphAssembler {
public:
WasmGraphAssembler(MachineGraph* mcgraph, Zone* zone)
: GraphAssembler(mcgraph, zone) {}
};
WasmGraphBuilder::WasmGraphBuilder(
wasm::CompilationEnv* env, Zone* zone, MachineGraph* mcgraph,
const wasm::FunctionSig* sig,
compiler::SourcePositionTable* source_position_table)
: gasm_(std::make_unique<WasmGraphAssembler>(mcgraph, zone)),
zone_(zone),
mcgraph_(mcgraph),
env_(env),
has_simd_(ContainsSimd(sig)),
untrusted_code_mitigations_(FLAG_untrusted_code_mitigations),
sig_(sig),
source_position_table_(source_position_table) {
DCHECK_IMPLIES(use_trap_handler(), trap_handler::IsTrapHandlerEnabled());
DCHECK_NOT_NULL(mcgraph_);
}
// Destructor define here where the definition of {WasmGraphAssembler} is
// available.
WasmGraphBuilder::~WasmGraphBuilder() = default;
Node* WasmGraphBuilder::Error() { return mcgraph()->Dead(); }
Node* WasmGraphBuilder::Start(unsigned params) {
Node* start = graph()->NewNode(mcgraph()->common()->Start(params));
graph()->SetStart(start);
return start;
}
Node* WasmGraphBuilder::Param(unsigned index) {
return graph()->NewNode(mcgraph()->common()->Parameter(index),
graph()->start());
}
Node* WasmGraphBuilder::Loop(Node* entry) {
return graph()->NewNode(mcgraph()->common()->Loop(1), entry);
}
Node* WasmGraphBuilder::TerminateLoop(Node* effect, Node* control) {
Node* terminate =
graph()->NewNode(mcgraph()->common()->Terminate(), effect, control);
MergeControlToEnd(mcgraph(), terminate);
return terminate;
}
Node* WasmGraphBuilder::TerminateThrow(Node* effect, Node* control) {
Node* terminate =
graph()->NewNode(mcgraph()->common()->Throw(), effect, control);
MergeControlToEnd(mcgraph(), terminate);
return terminate;
}
bool WasmGraphBuilder::IsPhiWithMerge(Node* phi, Node* merge) {
return phi && IrOpcode::IsPhiOpcode(phi->opcode()) &&
NodeProperties::GetControlInput(phi) == merge;
}
bool WasmGraphBuilder::ThrowsException(Node* node, Node** if_success,
Node** if_exception) {
if (node->op()->HasProperty(compiler::Operator::kNoThrow)) {
return false;
}
*if_success = graph()->NewNode(mcgraph()->common()->IfSuccess(), node);
*if_exception =
graph()->NewNode(mcgraph()->common()->IfException(), node, node);
return true;
}
void WasmGraphBuilder::AppendToMerge(Node* merge, Node* from) {
DCHECK(IrOpcode::IsMergeOpcode(merge->opcode()));
merge->AppendInput(mcgraph()->zone(), from);
int new_size = merge->InputCount();
NodeProperties::ChangeOp(
merge, mcgraph()->common()->ResizeMergeOrPhi(merge->op(), new_size));
}
void WasmGraphBuilder::AppendToPhi(Node* phi, Node* from) {
DCHECK(IrOpcode::IsPhiOpcode(phi->opcode()));
int new_size = phi->InputCount();
phi->InsertInput(mcgraph()->zone(), phi->InputCount() - 1, from);
NodeProperties::ChangeOp(
phi, mcgraph()->common()->ResizeMergeOrPhi(phi->op(), new_size));
}
Node* WasmGraphBuilder::Merge(unsigned count, Node** controls) {
return graph()->NewNode(mcgraph()->common()->Merge(count), count, controls);
}
Node* WasmGraphBuilder::Phi(wasm::ValueType type, unsigned count,
Node** vals_and_control) {
DCHECK(IrOpcode::IsMergeOpcode(vals_and_control[count]->opcode()));
return graph()->NewNode(
mcgraph()->common()->Phi(type.machine_representation(), count), count + 1,
vals_and_control);
}
Node* WasmGraphBuilder::EffectPhi(unsigned count, Node** effects_and_control) {
DCHECK(IrOpcode::IsMergeOpcode(effects_and_control[count]->opcode()));
return graph()->NewNode(mcgraph()->common()->EffectPhi(count), count + 1,
effects_and_control);
}
Node* WasmGraphBuilder::RefNull() {
return LOAD_FULL_POINTER(
BuildLoadIsolateRoot(),
IsolateData::root_slot_offset(RootIndex::kNullValue));
}
Node* WasmGraphBuilder::RefFunc(uint32_t function_index) {
auto call_descriptor = GetBuiltinCallDescriptor<WasmRefFuncDescriptor>(
this, StubCallMode::kCallWasmRuntimeStub);
// A direct call to a wasm runtime stub defined in this module.
// Just encode the stub index. This will be patched at relocation.
Node* call_target = mcgraph()->RelocatableIntPtrConstant(
wasm::WasmCode::kWasmRefFunc, RelocInfo::WASM_STUB_CALL);
return SetEffectControl(
graph()->NewNode(mcgraph()->common()->Call(call_descriptor), call_target,
Uint32Constant(function_index), effect(), control()));
}
Node* WasmGraphBuilder::RefAsNonNull(Node* arg,
wasm::WasmCodePosition position) {
TrapIfTrue(wasm::kTrapIllegalCast, gasm_->WordEqual(arg, RefNull()),
position);
return arg;
}
Node* WasmGraphBuilder::NoContextConstant() {
return mcgraph()->IntPtrConstant(0);
}
Node* WasmGraphBuilder::BuildLoadIsolateRoot() {
// The IsolateRoot is loaded from the instance node so that the generated
// code is Isolate independent. This can be overridden by setting a specific
// node in {isolate_root_node_} beforehand.
if (isolate_root_node_.is_set()) return isolate_root_node_.get();
return LOAD_INSTANCE_FIELD(IsolateRoot, MachineType::Pointer());
}
Node* WasmGraphBuilder::Uint32Constant(uint32_t value) {
return mcgraph()->Uint32Constant(value);
}
Node* WasmGraphBuilder::Int32Constant(int32_t value) {
return mcgraph()->Int32Constant(value);
}
Node* WasmGraphBuilder::Int64Constant(int64_t value) {
return mcgraph()->Int64Constant(value);
}
Node* WasmGraphBuilder::IntPtrConstant(intptr_t value) {
return mcgraph()->IntPtrConstant(value);
}
void WasmGraphBuilder::StackCheck(wasm::WasmCodePosition position) {
DCHECK_NOT_NULL(env_); // Wrappers don't get stack checks.
if (!FLAG_wasm_stack_checks || !env_->runtime_exception_support) {
return;
}
Node* limit_address = graph()->NewNode(
mcgraph()->machine()->Load(MachineType::Pointer()), instance_node_.get(),
mcgraph()->Int32Constant(WASM_INSTANCE_OBJECT_OFFSET(StackLimitAddress)),
effect(), control());
Node* limit = SetEffect(graph()->NewNode(
mcgraph()->machine()->Load(MachineType::Pointer()), limit_address,
mcgraph()->IntPtrConstant(0), limit_address, control()));
Node* check = SetEffect(graph()->NewNode(
mcgraph()->machine()->StackPointerGreaterThan(StackCheckKind::kWasm),
limit, effect()));
Diamond stack_check(graph(), mcgraph()->common(), check, BranchHint::kTrue);
stack_check.Chain(control());
if (stack_check_call_operator_ == nullptr) {
// Build and cache the stack check call operator and the constant
// representing the stack check code.
auto call_descriptor = Linkage::GetStubCallDescriptor(
mcgraph()->zone(), // zone
NoContextDescriptor{}, // descriptor
0, // stack parameter count
CallDescriptor::kNoFlags, // flags
Operator::kNoProperties, // properties
StubCallMode::kCallWasmRuntimeStub); // stub call mode
// A direct call to a wasm runtime stub defined in this module.
// Just encode the stub index. This will be patched at relocation.
stack_check_code_node_.set(mcgraph()->RelocatableIntPtrConstant(
wasm::WasmCode::kWasmStackGuard, RelocInfo::WASM_STUB_CALL));
stack_check_call_operator_ = mcgraph()->common()->Call(call_descriptor);
}
Node* call = graph()->NewNode(stack_check_call_operator_.get(),
stack_check_code_node_.get(), effect(),
stack_check.if_false);
SetSourcePosition(call, position);
Node* ephi = stack_check.EffectPhi(effect(), call);
SetEffectControl(ephi, stack_check.merge);
}
void WasmGraphBuilder::PatchInStackCheckIfNeeded() {
if (!needs_stack_check_) return;
Node* start = graph()->start();
// Place a stack check which uses a dummy node as control and effect.
Node* dummy = graph()->NewNode(mcgraph()->common()->Dead());
SetEffectControl(dummy);
// The function-prologue stack check is associated with position 0, which
// is never a position of any instruction in the function.
StackCheck(0);
// In testing, no steck checks were emitted. Nothing to rewire then.
if (effect() == dummy) return;
// Now patch all control uses of {start} to use {control} and all effect uses
// to use {effect} instead. Then rewire the dummy node to use start instead.
NodeProperties::ReplaceUses(start, start, effect(), control());
NodeProperties::ReplaceUses(dummy, nullptr, start, start);
}
Node* WasmGraphBuilder::Binop(wasm::WasmOpcode opcode, Node* left, Node* right,
wasm::WasmCodePosition position) {
const Operator* op;
MachineOperatorBuilder* m = mcgraph()->machine();
switch (opcode) {
case wasm::kExprI32Add:
op = m->Int32Add();
break;
case wasm::kExprI32Sub:
op = m->Int32Sub();
break;
case wasm::kExprI32Mul:
op = m->Int32Mul();
break;
case wasm::kExprI32DivS:
return BuildI32DivS(left, right, position);
case wasm::kExprI32DivU:
return BuildI32DivU(left, right, position);
case wasm::kExprI32RemS:
return BuildI32RemS(left, right, position);
case wasm::kExprI32RemU:
return BuildI32RemU(left, right, position);
case wasm::kExprI32And:
op = m->Word32And();
break;
case wasm::kExprI32Ior:
op = m->Word32Or();
break;
case wasm::kExprI32Xor:
op = m->Word32Xor();
break;
case wasm::kExprI32Shl:
op = m->Word32Shl();
right = MaskShiftCount32(right);
break;
case wasm::kExprI32ShrU:
op = m->Word32Shr();
right = MaskShiftCount32(right);
break;
case wasm::kExprI32ShrS:
op = m->Word32Sar();
right = MaskShiftCount32(right);
break;
case wasm::kExprI32Ror:
op = m->Word32Ror();
right = MaskShiftCount32(right);
break;
case wasm::kExprI32Rol:
if (m->Word32Rol().IsSupported()) {
op = m->Word32Rol().op();
right = MaskShiftCount32(right);
break;
}
return BuildI32Rol(left, right);
case wasm::kExprI32Eq:
op = m->Word32Equal();
break;
case wasm::kExprI32Ne:
return Invert(Binop(wasm::kExprI32Eq, left, right));
case wasm::kExprI32LtS:
op = m->Int32LessThan();
break;
case wasm::kExprI32LeS:
op = m->Int32LessThanOrEqual();
break;
case wasm::kExprI32LtU:
op = m->Uint32LessThan();
break;
case wasm::kExprI32LeU:
op = m->Uint32LessThanOrEqual();
break;
case wasm::kExprI32GtS:
op = m->Int32LessThan();
std::swap(left, right);
break;
case wasm::kExprI32GeS:
op = m->Int32LessThanOrEqual();
std::swap(left, right);
break;
case wasm::kExprI32GtU:
op = m->Uint32LessThan();
std::swap(left, right);
break;
case wasm::kExprI32GeU:
op = m->Uint32LessThanOrEqual();
std::swap(left, right);
break;
case wasm::kExprI64And:
op = m->Word64And();
break;
case wasm::kExprI64Add:
op = m->Int64Add();
break;
case wasm::kExprI64Sub:
op = m->Int64Sub();
break;
case wasm::kExprI64Mul:
op = m->Int64Mul();
break;
case wasm::kExprI64DivS:
return BuildI64DivS(left, right, position);
case wasm::kExprI64DivU:
return BuildI64DivU(left, right, position);
case wasm::kExprI64RemS:
return BuildI64RemS(left, right, position);
case wasm::kExprI64RemU:
return BuildI64RemU(left, right, position);
case wasm::kExprI64Ior:
op = m->Word64Or();
break;
case wasm::kExprI64Xor:
op = m->Word64Xor();
break;
case wasm::kExprI64Shl:
op = m->Word64Shl();
right = MaskShiftCount64(right);
break;
case wasm::kExprI64ShrU:
op = m->Word64Shr();
right = MaskShiftCount64(right);
break;
case wasm::kExprI64ShrS:
op = m->Word64Sar();
right = MaskShiftCount64(right);
break;
case wasm::kExprI64Eq:
op = m->Word64Equal();
break;
case wasm::kExprI64Ne:
return Invert(Binop(wasm::kExprI64Eq, left, right));
case wasm::kExprI64LtS:
op = m->Int64LessThan();
break;
case wasm::kExprI64LeS:
op = m->Int64LessThanOrEqual();
break;
case wasm::kExprI64LtU:
op = m->Uint64LessThan();
break;
case wasm::kExprI64LeU:
op = m->Uint64LessThanOrEqual();
break;
case wasm::kExprI64GtS:
op = m->Int64LessThan();
std::swap(left, right);
break;
case wasm::kExprI64GeS:
op = m->Int64LessThanOrEqual();
std::swap(left, right);
break;
case wasm::kExprI64GtU:
op = m->Uint64LessThan();
std::swap(left, right);
break;
case wasm::kExprI64GeU:
op = m->Uint64LessThanOrEqual();
std::swap(left, right);
break;
case wasm::kExprI64Ror:
op = m->Word64Ror();
right = MaskShiftCount64(right);
break;
case wasm::kExprI64Rol:
if (m->Word64Rol().IsSupported()) {
op = m->Word64Rol().op();
right = MaskShiftCount64(right);
break;
} else if (m->Word32Rol().IsSupported()) {
op = m->Word64Rol().placeholder();
break;
}
return BuildI64Rol(left, right);
case wasm::kExprF32CopySign:
return BuildF32CopySign(left, right);
case wasm::kExprF64CopySign:
return BuildF64CopySign(left, right);
case wasm::kExprF32Add:
op = m->Float32Add();
break;
case wasm::kExprF32Sub:
op = m->Float32Sub();
break;
case wasm::kExprF32Mul:
op = m->Float32Mul();
break;
case wasm::kExprF32Div:
op = m->Float32Div();
break;
case wasm::kExprF32Eq:
op = m->Float32Equal();
break;
case wasm::kExprF32Ne:
return Invert(Binop(wasm::kExprF32Eq, left, right));
case wasm::kExprF32Lt:
op = m->Float32LessThan();
break;
case wasm::kExprF32Ge:
op = m->Float32LessThanOrEqual();
std::swap(left, right);
break;
case wasm::kExprF32Gt:
op = m->Float32LessThan();
std::swap(left, right);
break;
case wasm::kExprF32Le:
op = m->Float32LessThanOrEqual();
break;
case wasm::kExprF64Add:
op = m->Float64Add();
break;
case wasm::kExprF64Sub:
op = m->Float64Sub();
break;
case wasm::kExprF64Mul:
op = m->Float64Mul();
break;
case wasm::kExprF64Div:
op = m->Float64Div();
break;
case wasm::kExprF64Eq:
op = m->Float64Equal();
break;
case wasm::kExprF64Ne:
return Invert(Binop(wasm::kExprF64Eq, left, right));
case wasm::kExprF64Lt:
op = m->Float64LessThan();
break;
case wasm::kExprF64Le:
op = m->Float64LessThanOrEqual();
break;
case wasm::kExprF64Gt:
op = m->Float64LessThan();
std::swap(left, right);
break;
case wasm::kExprF64Ge:
op = m->Float64LessThanOrEqual();
std::swap(left, right);
break;
case wasm::kExprF32Min:
op = m->Float32Min();
break;
case wasm::kExprF64Min:
op = m->Float64Min();
break;
case wasm::kExprF32Max:
op = m->Float32Max();
break;
case wasm::kExprF64Max:
op = m->Float64Max();
break;
case wasm::kExprF64Pow:
return BuildF64Pow(left, right);
case wasm::kExprF64Atan2:
op = m->Float64Atan2();
break;
case wasm::kExprF64Mod:
return BuildF64Mod(left, right);
case wasm::kExprRefEq:
return gasm_->TaggedEqual(left, right);
case wasm::kExprI32AsmjsDivS:
return BuildI32AsmjsDivS(left, right);
case wasm::kExprI32AsmjsDivU:
return BuildI32AsmjsDivU(left, right);
case wasm::kExprI32AsmjsRemS:
return BuildI32AsmjsRemS(left, right);
case wasm::kExprI32AsmjsRemU:
return BuildI32AsmjsRemU(left, right);
case wasm::kExprI32AsmjsStoreMem8:
return BuildAsmjsStoreMem(MachineType::Int8(), left, right);
case wasm::kExprI32AsmjsStoreMem16:
return BuildAsmjsStoreMem(MachineType::Int16(), left, right);
case wasm::kExprI32AsmjsStoreMem:
return BuildAsmjsStoreMem(MachineType::Int32(), left, right);
case wasm::kExprF32AsmjsStoreMem:
return BuildAsmjsStoreMem(MachineType::Float32(), left, right);
case wasm::kExprF64AsmjsStoreMem:
return BuildAsmjsStoreMem(MachineType::Float64(), left, right);
default:
FATAL_UNSUPPORTED_OPCODE(opcode);
}
return graph()->NewNode(op, left, right);
}
Node* WasmGraphBuilder::Unop(wasm::WasmOpcode opcode, Node* input,
wasm::WasmCodePosition position) {
const Operator* op;
MachineOperatorBuilder* m = mcgraph()->machine();
switch (opcode) {
case wasm::kExprI32Eqz:
op = m->Word32Equal();
return graph()->NewNode(op, input, mcgraph()->Int32Constant(0));
case wasm::kExprF32Abs:
op = m->Float32Abs();
break;
case wasm::kExprF32Neg: {
op = m->Float32Neg();
break;
}
case wasm::kExprF32Sqrt:
op = m->Float32Sqrt();
break;
case wasm::kExprF64Abs:
op = m->Float64Abs();
break;
case wasm::kExprF64Neg: {
op = m->Float64Neg();
break;
}
case wasm::kExprF64Sqrt:
op = m->Float64Sqrt();
break;
case wasm::kExprI32SConvertF32:
case wasm::kExprI32UConvertF32:
case wasm::kExprI32SConvertF64:
case wasm::kExprI32UConvertF64:
case wasm::kExprI32SConvertSatF64:
case wasm::kExprI32UConvertSatF64:
case wasm::kExprI32SConvertSatF32:
case wasm::kExprI32UConvertSatF32:
return BuildIntConvertFloat(input, position, opcode);
case wasm::kExprI32AsmjsSConvertF64:
return BuildI32AsmjsSConvertF64(input);
case wasm::kExprI32AsmjsUConvertF64:
return BuildI32AsmjsUConvertF64(input);
case wasm::kExprF32ConvertF64:
op = m->TruncateFloat64ToFloat32();
break;
case wasm::kExprF64SConvertI32:
op = m->ChangeInt32ToFloat64();
break;
case wasm::kExprF64UConvertI32:
op = m->ChangeUint32ToFloat64();
break;
case wasm::kExprF32SConvertI32:
op = m->RoundInt32ToFloat32();
break;
case wasm::kExprF32UConvertI32:
op = m->RoundUint32ToFloat32();
break;
case wasm::kExprI32AsmjsSConvertF32:
return BuildI32AsmjsSConvertF32(input);
case wasm::kExprI32AsmjsUConvertF32:
return BuildI32AsmjsUConvertF32(input);
case wasm::kExprF64ConvertF32:
op = m->ChangeFloat32ToFloat64();
break;
case wasm::kExprF32ReinterpretI32:
op = m->BitcastInt32ToFloat32();
break;
case wasm::kExprI32ReinterpretF32:
op = m->BitcastFloat32ToInt32();
break;
case wasm::kExprI32Clz:
op = m->Word32Clz();
break;
case wasm::kExprI32Ctz: {
if (m->Word32Ctz().IsSupported()) {
op = m->Word32Ctz().op();
break;
} else if (m->Word32ReverseBits().IsSupported()) {
Node* reversed = graph()->NewNode(m->Word32ReverseBits().op(), input);
Node* result = graph()->NewNode(m->Word32Clz(), reversed);
return result;
} else {
return BuildI32Ctz(input);
}
}
case wasm::kExprI32Popcnt: {
if (m->Word32Popcnt().IsSupported()) {
op = m->Word32Popcnt().op();
break;
} else {
return BuildI32Popcnt(input);
}
}
case wasm::kExprF32Floor: {
if (!m->Float32RoundDown().IsSupported()) return BuildF32Floor(input);
op = m->Float32RoundDown().op();
break;
}
case wasm::kExprF32Ceil: {
if (!m->Float32RoundUp().IsSupported()) return BuildF32Ceil(input);
op = m->Float32RoundUp().op();
break;
}
case wasm::kExprF32Trunc: {
if (!m->Float32RoundTruncate().IsSupported()) return BuildF32Trunc(input);
op = m->Float32RoundTruncate().op();
break;
}
case wasm::kExprF32NearestInt: {
if (!m->Float32RoundTiesEven().IsSupported())
return BuildF32NearestInt(input);
op = m->Float32RoundTiesEven().op();
break;
}
case wasm::kExprF64Floor: {
if (!m->Float64RoundDown().IsSupported()) return BuildF64Floor(input);
op = m->Float64RoundDown().op();
break;
}
case wasm::kExprF64Ceil: {
if (!m->Float64RoundUp().IsSupported()) return BuildF64Ceil(input);
op = m->Float64RoundUp().op();
break;
}
case wasm::kExprF64Trunc: {
if (!m->Float64RoundTruncate().IsSupported()) return BuildF64Trunc(input);
op = m->Float64RoundTruncate().op();
break;
}
case wasm::kExprF64NearestInt: {
if (!m->Float64RoundTiesEven().IsSupported())
return BuildF64NearestInt(input);
op = m->Float64RoundTiesEven().op();
break;
}
case wasm::kExprF64Acos: {
return BuildF64Acos(input);
}
case wasm::kExprF64Asin: {
return BuildF64Asin(input);
}
case wasm::kExprF64Atan:
op = m->Float64Atan();
break;
case wasm::kExprF64Cos: {
op = m->Float64Cos();
break;
}
case wasm::kExprF64Sin: {
op = m->Float64Sin();
break;
}
case wasm::kExprF64Tan: {
op = m->Float64Tan();
break;
}
case wasm::kExprF64Exp: {
op = m->Float64Exp();
break;
}
case wasm::kExprF64Log:
op = m->Float64Log();
break;
case wasm::kExprI32ConvertI64:
op = m->TruncateInt64ToInt32();
break;
case wasm::kExprI64SConvertI32:
op = m->ChangeInt32ToInt64();
break;
case wasm::kExprI64UConvertI32:
op = m->ChangeUint32ToUint64();
break;
case wasm::kExprF64ReinterpretI64:
op = m->BitcastInt64ToFloat64();
break;
case wasm::kExprI64ReinterpretF64:
op = m->BitcastFloat64ToInt64();
break;
case wasm::kExprI64Clz:
op = m->Word64Clz();
break;
case wasm::kExprI64Ctz: {
OptionalOperator ctz64 = m->Word64Ctz();
if (ctz64.IsSupported()) {
op = ctz64.op();
break;
} else if (m->Is32() && m->Word32Ctz().IsSupported()) {
op = ctz64.placeholder();
break;
} else if (m->Word64ReverseBits().IsSupported()) {
Node* reversed = graph()->NewNode(m->Word64ReverseBits().op(), input);
Node* result = graph()->NewNode(m->Word64Clz(), reversed);
return result;
} else {
return BuildI64Ctz(input);
}
}
case wasm::kExprI64Popcnt: {
OptionalOperator popcnt64 = m->Word64Popcnt();
if (popcnt64.IsSupported()) {
op = popcnt64.op();
} else if (m->Is32() && m->Word32Popcnt().IsSupported()) {
op = popcnt64.placeholder();
} else {
return BuildI64Popcnt(input);
}
break;
}
case wasm::kExprI64Eqz:
op = m->Word64Equal();
return graph()->NewNode(op, input, mcgraph()->Int64Constant(0));
case wasm::kExprF32SConvertI64:
if (m->Is32()) {
return BuildF32SConvertI64(input);
}
op = m->RoundInt64ToFloat32();
break;
case wasm::kExprF32UConvertI64:
if (m->Is32()) {
return BuildF32UConvertI64(input);
}
op = m->RoundUint64ToFloat32();
break;
case wasm::kExprF64SConvertI64:
if (m->Is32()) {
return BuildF64SConvertI64(input);
}
op = m->RoundInt64ToFloat64();
break;
case wasm::kExprF64UConvertI64:
if (m->Is32()) {
return BuildF64UConvertI64(input);
}
op = m->RoundUint64ToFloat64();
break;
case wasm::kExprI32SExtendI8:
op = m->SignExtendWord8ToInt32();
break;
case wasm::kExprI32SExtendI16:
op = m->SignExtendWord16ToInt32();
break;
case wasm::kExprI64SExtendI8:
op = m->SignExtendWord8ToInt64();
break;
case wasm::kExprI64SExtendI16:
op = m->SignExtendWord16ToInt64();
break;
case wasm::kExprI64SExtendI32:
op = m->SignExtendWord32ToInt64();
break;
case wasm::kExprI64SConvertF32:
case wasm::kExprI64UConvertF32:
case wasm::kExprI64SConvertF64:
case wasm::kExprI64UConvertF64:
case wasm::kExprI64SConvertSatF32:
case wasm::kExprI64UConvertSatF32:
case wasm::kExprI64SConvertSatF64:
case wasm::kExprI64UConvertSatF64:
return mcgraph()->machine()->Is32()
? BuildCcallConvertFloat(input, position, opcode)
: BuildIntConvertFloat(input, position, opcode);
case wasm::kExprRefIsNull:
return graph()->NewNode(m->WordEqual(), input, RefNull());
case wasm::kExprI32AsmjsLoadMem8S:
return BuildAsmjsLoadMem(MachineType::Int8(), input);
case wasm::kExprI32AsmjsLoadMem8U:
return BuildAsmjsLoadMem(MachineType::Uint8(), input);
case wasm::kExprI32AsmjsLoadMem16S:
return BuildAsmjsLoadMem(MachineType::Int16(), input);
case wasm::kExprI32AsmjsLoadMem16U:
return BuildAsmjsLoadMem(MachineType::Uint16(), input);
case wasm::kExprI32AsmjsLoadMem:
return BuildAsmjsLoadMem(MachineType::Int32(), input);
case wasm::kExprF32AsmjsLoadMem:
return BuildAsmjsLoadMem(MachineType::Float32(), input);
case wasm::kExprF64AsmjsLoadMem:
return BuildAsmjsLoadMem(MachineType::Float64(), input);
default:
FATAL_UNSUPPORTED_OPCODE(opcode);
}
return graph()->NewNode(op, input);
}
Node* WasmGraphBuilder::Float32Constant(float value) {
return mcgraph()->Float32Constant(value);
}
Node* WasmGraphBuilder::Float64Constant(double value) {
return mcgraph()->Float64Constant(value);
}
Node* WasmGraphBuilder::Simd128Constant(const uint8_t value[16]) {
has_simd_ = true;
return graph()->NewNode(mcgraph()->machine()->S128Const(value));
}
namespace {
Node* Branch(MachineGraph* mcgraph, Node* cond, Node** true_node,
Node** false_node, Node* control, BranchHint hint) {
DCHECK_NOT_NULL(cond);
DCHECK_NOT_NULL(control);
Node* branch =
mcgraph->graph()->NewNode(mcgraph->common()->Branch(hint), cond, control);
*true_node = mcgraph->graph()->NewNode(mcgraph->common()->IfTrue(), branch);
*false_node = mcgraph->graph()->NewNode(mcgraph->common()->IfFalse(), branch);
return branch;
}
} // namespace
Node* WasmGraphBuilder::BranchNoHint(Node* cond, Node** true_node,
Node** false_node) {
return Branch(mcgraph(), cond, true_node, false_node, control(),
BranchHint::kNone);