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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.
#ifndef V8_COMPILER_WASM_COMPILER_H_
#define V8_COMPILER_WASM_COMPILER_H_
#include <memory>
#include <utility>
// Clients of this interface shouldn't depend on lots of compiler internals.
// Do not include anything from src/compiler here!
#include "src/runtime/runtime.h"
#include "src/wasm/function-body-decoder.h"
#include "src/wasm/function-compiler.h"
#include "src/wasm/wasm-module.h"
#include "src/wasm/wasm-opcodes.h"
#include "src/wasm/wasm-result.h"
#include "src/zone/zone.h"
namespace v8 {
namespace internal {
struct AssemblerOptions;
class OptimizedCompilationJob;
namespace compiler {
// Forward declarations for some compiler data structures.
class CallDescriptor;
class Graph;
class MachineGraph;
class Node;
class NodeOriginTable;
class Operator;
class SourcePositionTable;
class WasmDecorator;
class WasmGraphAssembler;
enum class TrapId : uint32_t;
struct Int64LoweringSpecialCase;
} // namespace compiler
namespace wasm {
struct DecodeStruct;
// Expose {Node} and {Graph} opaquely as {wasm::TFNode} and {wasm::TFGraph}.
using TFNode = compiler::Node;
using TFGraph = compiler::MachineGraph;
class WasmCode;
class WasmFeatures;
enum class LoadTransformationKind : uint8_t;
} // namespace wasm
namespace compiler {
wasm::WasmCompilationResult ExecuteTurbofanWasmCompilation(
wasm::WasmEngine*, wasm::CompilationEnv*, const wasm::FunctionBody&,
int func_index, Counters*, wasm::WasmFeatures* detected);
// Calls to Wasm imports are handled in several different ways, depending on the
// type of the target function/callable and whether the signature matches the
// argument arity.
enum class WasmImportCallKind : uint8_t {
kLinkError, // static Wasm->Wasm type error
kRuntimeTypeError, // runtime Wasm->JS type error
kWasmToCapi, // fast Wasm->C-API call
kWasmToWasm, // fast Wasm->Wasm call
kJSFunctionArityMatch, // fast Wasm->JS call
kJSFunctionArityMismatch, // Wasm->JS, needs adapter frame
// Math functions imported from JavaScript that are intrinsified
kFirstMathIntrinsic,
kF64Acos = kFirstMathIntrinsic,
kF64Asin,
kF64Atan,
kF64Cos,
kF64Sin,
kF64Tan,
kF64Exp,
kF64Log,
kF64Atan2,
kF64Pow,
kF64Ceil,
kF64Floor,
kF64Sqrt,
kF64Min,
kF64Max,
kF64Abs,
kF32Min,
kF32Max,
kF32Abs,
kF32Ceil,
kF32Floor,
kF32Sqrt,
kF32ConvertF64,
kLastMathIntrinsic = kF32ConvertF64,
// For everything else, there's the call builtin.
kUseCallBuiltin
};
constexpr WasmImportCallKind kDefaultImportCallKind =
WasmImportCallKind::kJSFunctionArityMatch;
// Resolves which import call wrapper is required for the given JS callable.
// Returns the kind of wrapper need and the ultimate target callable. Note that
// some callables (e.g. a {WasmExportedFunction} or {WasmJSFunction}) just wrap
// another target, which is why the ultimate target is returned as well.
V8_EXPORT_PRIVATE std::pair<WasmImportCallKind, Handle<JSReceiver>>
ResolveWasmImportCall(Handle<JSReceiver> callable, const wasm::FunctionSig* sig,
const wasm::WasmModule* module,
const wasm::WasmFeatures& enabled_features);
// Compiles an import call wrapper, which allows Wasm to call imports.
V8_EXPORT_PRIVATE wasm::WasmCompilationResult CompileWasmImportCallWrapper(
wasm::WasmEngine*, wasm::CompilationEnv* env, WasmImportCallKind,
const wasm::FunctionSig*, bool source_positions, int expected_arity);
// Compiles a host call wrapper, which allows Wasm to call host functions.
wasm::WasmCode* CompileWasmCapiCallWrapper(wasm::WasmEngine*,
wasm::NativeModule*,
const wasm::FunctionSig*,
Address address);
// Returns an OptimizedCompilationJob object for a JS to Wasm wrapper.
std::unique_ptr<OptimizedCompilationJob> NewJSToWasmCompilationJob(
Isolate* isolate, wasm::WasmEngine* wasm_engine,
const wasm::FunctionSig* sig, const wasm::WasmModule* module,
bool is_import, const wasm::WasmFeatures& enabled_features);
MaybeHandle<Code> CompileWasmToJSWrapper(Isolate* isolate,
const wasm::FunctionSig* sig,
WasmImportCallKind kind,
int expected_arity);
// Compiles a stub with JS linkage that serves as an adapter for function
// objects constructed via {WebAssembly.Function}. It performs a round-trip
// simulating a JS-to-Wasm-to-JS coercion of parameter and return values.
MaybeHandle<Code> CompileJSToJSWrapper(Isolate*, const wasm::FunctionSig*,
const wasm::WasmModule* module);
enum CWasmEntryParameters {
kCodeEntry,
kObjectRef,
kArgumentsBuffer,
kCEntryFp,
// marker:
kNumParameters
};
// Compiles a stub with C++ linkage, to be called from Execution::CallWasm,
// which knows how to feed it its parameters.
V8_EXPORT_PRIVATE Handle<Code> CompileCWasmEntry(
Isolate*, const wasm::FunctionSig*, const wasm::WasmModule* module);
// Values from the instance object are cached between Wasm-level function calls.
// This struct allows the SSA environment handling this cache to be defined
// and manipulated in wasm-compiler.{h,cc} instead of inside the Wasm decoder.
// (Note that currently, the globals base is immutable, so not cached here.)
struct WasmInstanceCacheNodes {
Node* mem_start;
Node* mem_size;
Node* mem_mask;
};
// Abstracts details of building TurboFan graph nodes for wasm to separate
// the wasm decoder from the internal details of TurboFan.
class WasmGraphBuilder {
public:
enum EnforceBoundsCheck : bool { // --
kNeedsBoundsCheck = true,
kCanOmitBoundsCheck = false
};
enum UseRetpoline : bool { // --
kRetpoline = true,
kNoRetpoline = false
};
enum CheckForNull : bool { // --
kWithNullCheck = true,
kWithoutNullCheck = false
};
enum CheckForI31 : bool { // --
kWithI31Check = true,
kNoI31Check = false
};
enum RttIsI31 : bool { // --
kRttIsI31 = true,
kRttIsNotI31 = false
};
V8_EXPORT_PRIVATE WasmGraphBuilder(
wasm::CompilationEnv* env, Zone* zone, MachineGraph* mcgraph,
const wasm::FunctionSig* sig,
compiler::SourcePositionTable* spt = nullptr);
V8_EXPORT_PRIVATE ~WasmGraphBuilder();
//-----------------------------------------------------------------------
// Operations independent of {control} or {effect}.
//-----------------------------------------------------------------------
Node* Error();
Node* Start(unsigned params);
Node* Param(unsigned index);
Node* Loop(Node* entry);
Node* TerminateLoop(Node* effect, Node* control);
Node* TerminateThrow(Node* effect, Node* control);
Node* Merge(unsigned count, Node** controls);
Node* Phi(wasm::ValueType type, unsigned count, Node** vals_and_control);
Node* CreateOrMergeIntoPhi(MachineRepresentation rep, Node* merge,
Node* tnode, Node* fnode);
Node* CreateOrMergeIntoEffectPhi(Node* merge, Node* tnode, Node* fnode);
Node* EffectPhi(unsigned count, Node** effects_and_control);
Node* RefNull();
Node* RefFunc(uint32_t function_index);
Node* RefAsNonNull(Node* arg, wasm::WasmCodePosition position);
Node* Int32Constant(int32_t value);
Node* Int64Constant(int64_t value);
Node* Float32Constant(float value);
Node* Float64Constant(double value);
Node* Simd128Constant(const uint8_t value[16]);
Node* Binop(wasm::WasmOpcode opcode, Node* left, Node* right,
wasm::WasmCodePosition position = wasm::kNoCodePosition);
Node* Unop(wasm::WasmOpcode opcode, Node* input,
wasm::WasmCodePosition position = wasm::kNoCodePosition);
Node* MemoryGrow(Node* input);
Node* Throw(uint32_t exception_index, const wasm::WasmException* exception,
const Vector<Node*> values, wasm::WasmCodePosition position);
Node* Rethrow(Node* except_obj);
Node* ExceptionTagEqual(Node* caught_tag, Node* expected_tag);
Node* LoadExceptionTagFromTable(uint32_t exception_index);
Node* GetExceptionTag(Node* except_obj, wasm::WasmCodePosition);
Node* GetExceptionValues(Node* except_obj,
const wasm::WasmException* exception,
Vector<Node*> values_out);
bool IsPhiWithMerge(Node* phi, Node* merge);
bool ThrowsException(Node* node, Node** if_success, Node** if_exception);
void AppendToMerge(Node* merge, Node* from);
void AppendToPhi(Node* phi, Node* from);
void StackCheck(wasm::WasmCodePosition);
void PatchInStackCheckIfNeeded();
//-----------------------------------------------------------------------
// Operations that read and/or write {control} and {effect}.
//-----------------------------------------------------------------------
Node* BranchNoHint(Node* cond, Node** true_node, Node** false_node);
Node* BranchExpectTrue(Node* cond, Node** true_node, Node** false_node);
Node* BranchExpectFalse(Node* cond, Node** true_node, Node** false_node);
Node* TrapIfTrue(wasm::TrapReason reason, Node* cond,
wasm::WasmCodePosition position);
Node* TrapIfFalse(wasm::TrapReason reason, Node* cond,
wasm::WasmCodePosition position);
Node* TrapIfEq32(wasm::TrapReason reason, Node* node, int32_t val,
wasm::WasmCodePosition position);
Node* ZeroCheck32(wasm::TrapReason reason, Node* node,
wasm::WasmCodePosition position);
Node* TrapIfEq64(wasm::TrapReason reason, Node* node, int64_t val,
wasm::WasmCodePosition position);
Node* ZeroCheck64(wasm::TrapReason reason, Node* node,
wasm::WasmCodePosition position);
Node* Switch(unsigned count, Node* key);
Node* IfValue(int32_t value, Node* sw);
Node* IfDefault(Node* sw);
Node* Return(Vector<Node*> nodes);
template <typename... Nodes>
Node* Return(Node* fst, Nodes*... more) {
Node* arr[] = {fst, more...};
return Return(ArrayVector(arr));
}
Node* TraceFunctionEntry(wasm::WasmCodePosition position);
Node* TraceFunctionExit(Vector<Node*> vals, wasm::WasmCodePosition position);
Node* Trap(wasm::TrapReason reason, wasm::WasmCodePosition position);
Node* CallDirect(uint32_t index, Vector<Node*> args, Vector<Node*> rets,
wasm::WasmCodePosition position);
Node* CallIndirect(uint32_t table_index, uint32_t sig_index,
Vector<Node*> args, Vector<Node*> rets,
wasm::WasmCodePosition position);
Node* CallRef(uint32_t sig_index, Vector<Node*> args, Vector<Node*> rets,
CheckForNull null_check, wasm::WasmCodePosition position);
Node* ReturnCall(uint32_t index, Vector<Node*> args,
wasm::WasmCodePosition position);
Node* ReturnCallIndirect(uint32_t table_index, uint32_t sig_index,
Vector<Node*> args, wasm::WasmCodePosition position);
Node* ReturnCallRef(uint32_t sig_index, Vector<Node*> args,
CheckForNull null_check, wasm::WasmCodePosition position);
// Return value is not expected to be used,
// but we need it for compatibility with graph-builder-interface.
Node* BrOnNull(Node* ref_object, Node** non_null_node, Node** null_node);
Node* Invert(Node* node);
Node* GlobalGet(uint32_t index);
Node* GlobalSet(uint32_t index, Node* val);
Node* TableGet(uint32_t table_index, Node* index,
wasm::WasmCodePosition position);
Node* TableSet(uint32_t table_index, Node* index, Node* val,
wasm::WasmCodePosition position);
//-----------------------------------------------------------------------
// Operations that concern the linear memory.
//-----------------------------------------------------------------------
Node* CurrentMemoryPages();
Node* TraceMemoryOperation(bool is_store, MachineRepresentation, Node* index,
uintptr_t offset, wasm::WasmCodePosition);
Node* LoadMem(wasm::ValueType type, MachineType memtype, Node* index,
uint64_t offset, uint32_t alignment,
wasm::WasmCodePosition position);
#if defined(V8_TARGET_BIG_ENDIAN) || defined(V8_TARGET_ARCH_S390_LE_SIM)
Node* LoadTransformBigEndian(wasm::ValueType type, MachineType memtype,
wasm::LoadTransformationKind transform,
Node* index, uint64_t offset, uint32_t alignment,
wasm::WasmCodePosition position);
#endif
Node* LoadTransform(wasm::ValueType type, MachineType memtype,
wasm::LoadTransformationKind transform, Node* index,
uint64_t offset, uint32_t alignment,
wasm::WasmCodePosition position);
Node* LoadLane(MachineType memtype, Node* value, Node* index, uint32_t offset,
uint8_t laneidx, wasm::WasmCodePosition position);
Node* StoreMem(MachineRepresentation mem_rep, Node* index, uint64_t offset,
uint32_t alignment, Node* val, wasm::WasmCodePosition position,
wasm::ValueType type);
Node* StoreLane(MachineRepresentation mem_rep, Node* index, uint32_t offset,
uint32_t alignment, Node* val, uint8_t laneidx,
wasm::WasmCodePosition position, wasm::ValueType type);
static void PrintDebugName(Node* node);
void set_instance_node(Node* instance_node) {
this->instance_node_ = instance_node;
}
Node* effect();
Node* control();
Node* SetEffect(Node* node);
Node* SetControl(Node* node);
void SetEffectControl(Node* effect, Node* control);
Node* SetEffectControl(Node* effect_and_control) {
SetEffectControl(effect_and_control, effect_and_control);
return effect_and_control;
}
Node* GetImportedMutableGlobals();
void GetGlobalBaseAndOffset(MachineType mem_type, const wasm::WasmGlobal&,
Node** base_node, Node** offset_node);
void GetBaseAndOffsetForImportedMutableExternRefGlobal(
const wasm::WasmGlobal& global, Node** base, Node** offset);
// Utilities to manipulate sets of instance cache nodes.
void InitInstanceCache(WasmInstanceCacheNodes* instance_cache);
void PrepareInstanceCacheForLoop(WasmInstanceCacheNodes* instance_cache,
Node* control);
void NewInstanceCacheMerge(WasmInstanceCacheNodes* to,
WasmInstanceCacheNodes* from, Node* merge);
void MergeInstanceCacheInto(WasmInstanceCacheNodes* to,
WasmInstanceCacheNodes* from, Node* merge);
void set_instance_cache(WasmInstanceCacheNodes* instance_cache) {
this->instance_cache_ = instance_cache;
}
const wasm::FunctionSig* GetFunctionSignature() { return sig_; }
enum CallOrigin { kCalledFromWasm, kCalledFromJS };
// Overload for when we want to provide a specific signature, rather than
// build one using sig_, for example after scalar lowering.
V8_EXPORT_PRIVATE void LowerInt64(Signature<MachineRepresentation>* sig);
V8_EXPORT_PRIVATE void LowerInt64(CallOrigin origin);
V8_EXPORT_PRIVATE void SimdScalarLoweringForTesting();
void SetSourcePosition(Node* node, wasm::WasmCodePosition position);
Node* S128Zero();
Node* S1x4Zero();
Node* S1x8Zero();
Node* S1x16Zero();
Node* SimdOp(wasm::WasmOpcode opcode, Node* const* inputs);
Node* SimdLaneOp(wasm::WasmOpcode opcode, uint8_t lane, Node* const* inputs);
Node* Simd8x16ShuffleOp(const uint8_t shuffle[16], Node* const* inputs);
Node* AtomicOp(wasm::WasmOpcode opcode, Node* const* inputs,
uint32_t alignment, uint64_t offset,
wasm::WasmCodePosition position);
Node* AtomicFence();
Node* MemoryInit(uint32_t data_segment_index, Node* dst, Node* src,
Node* size, wasm::WasmCodePosition position);
Node* MemoryCopy(Node* dst, Node* src, Node* size,
wasm::WasmCodePosition position);
Node* DataDrop(uint32_t data_segment_index, wasm::WasmCodePosition position);
Node* MemoryFill(Node* dst, Node* fill, Node* size,
wasm::WasmCodePosition position);
Node* TableInit(uint32_t table_index, uint32_t elem_segment_index, Node* dst,
Node* src, Node* size, wasm::WasmCodePosition position);
Node* ElemDrop(uint32_t elem_segment_index, wasm::WasmCodePosition position);
Node* TableCopy(uint32_t table_dst_index, uint32_t table_src_index, Node* dst,
Node* src, Node* size, wasm::WasmCodePosition position);
Node* TableGrow(uint32_t table_index, Node* value, Node* delta);
Node* TableSize(uint32_t table_index);
Node* TableFill(uint32_t table_index, Node* start, Node* value, Node* count);
Node* StructNewWithRtt(uint32_t struct_index, const wasm::StructType* type,
Node* rtt, Vector<Node*> fields);
Node* StructGet(Node* struct_object, const wasm::StructType* struct_type,
uint32_t field_index, CheckForNull null_check, bool is_signed,
wasm::WasmCodePosition position);
Node* StructSet(Node* struct_object, const wasm::StructType* struct_type,
uint32_t field_index, Node* value, CheckForNull null_check,
wasm::WasmCodePosition position);
Node* ArrayNewWithRtt(uint32_t array_index, const wasm::ArrayType* type,
Node* length, Node* initial_value, Node* rtt);
void BoundsCheck(Node* array, Node* index, wasm::WasmCodePosition position);
Node* ArrayGet(Node* array_object, const wasm::ArrayType* type, Node* index,
CheckForNull null_check, bool is_signed,
wasm::WasmCodePosition position);
Node* ArraySet(Node* array_object, const wasm::ArrayType* type, Node* index,
Node* value, CheckForNull null_check,
wasm::WasmCodePosition position);
Node* ArrayLen(Node* array_object, wasm::WasmCodePosition position);
Node* I31New(Node* input);
Node* I31GetS(Node* input);
Node* I31GetU(Node* input);
Node* RttCanon(wasm::HeapType type);
Node* RttSub(wasm::HeapType type, Node* parent_rtt);
Node* RefTest(Node* object, Node* rtt, CheckForNull null_check,
CheckForI31 i31_check, RttIsI31 rtt_is_i31);
Node* RefCast(Node* object, Node* rtt, CheckForNull null_check,
CheckForI31 i31_check, RttIsI31 rtt_is_i31,
wasm::WasmCodePosition position);
Node* BrOnCast(Node* object, Node* rtt, CheckForNull null_check,
CheckForI31 i31_check, RttIsI31 rtt_is_i31,
Node** match_control, Node** match_effect,
Node** no_match_control, Node** no_match_effect);
bool has_simd() const { return has_simd_; }
wasm::UseTrapHandler use_trap_handler() const {
return env_ ? env_->use_trap_handler : wasm::kNoTrapHandler;
}
MachineGraph* mcgraph() { return mcgraph_; }
Graph* graph();
void AddBytecodePositionDecorator(NodeOriginTable* node_origins,
wasm::Decoder* decoder);
void RemoveBytecodePositionDecorator();
protected:
Node* NoContextConstant();
Node* BuildLoadIsolateRoot();
// MemBuffer is only called with valid offsets (after bounds checking), so the
// offset fits in a platform-dependent uintptr_t.
Node* MemBuffer(uintptr_t offset);
// BoundsCheckMem receives a uint32 {index} node and returns a ptrsize index.
Node* BoundsCheckMem(uint8_t access_size, Node* index, uint64_t offset,
wasm::WasmCodePosition, EnforceBoundsCheck);
// Check that the range [start, start + size) is in the range [0, max).
// Also updates *size with the valid range. Returns true if the range is
// partially out-of-bounds, traps if it is completely out-of-bounds.
Node* BoundsCheckRange(Node* start, Node** size, Node* max,
wasm::WasmCodePosition);
// BoundsCheckMemRange receives a uint32 {start} and {size}, and checks if it
// is in bounds. Also updates *size with the valid range, and converts *start
// to a pointer into memory at that index. Returns true if the range is
// partially out-of-bounds, traps if it is completely out-of-bounds.
Node* BoundsCheckMemRange(Node** start, Node** size, wasm::WasmCodePosition);
Node* CheckBoundsAndAlignment(int8_t access_size, Node* index,
uint64_t offset, wasm::WasmCodePosition);
Node* Uint32ToUintptr(Node*);
const Operator* GetSafeLoadOperator(int offset, wasm::ValueType type);
const Operator* GetSafeStoreOperator(int offset, wasm::ValueType type);
Node* BuildChangeEndiannessStore(Node* node, MachineRepresentation rep,
wasm::ValueType wasmtype = wasm::kWasmStmt);
Node* BuildChangeEndiannessLoad(Node* node, MachineType type,
wasm::ValueType wasmtype = wasm::kWasmStmt);
Node* MaskShiftCount32(Node* node);
Node* MaskShiftCount64(Node* node);
enum IsReturnCall : bool { kReturnCall = true, kCallContinues = false };
template <typename... Args>
Node* BuildCCall(MachineSignature* sig, Node* function, Args... args);
Node* BuildCallNode(const wasm::FunctionSig* sig, Vector<Node*> args,
wasm::WasmCodePosition position, Node* instance_node,
const Operator* op);
// Helper function for {BuildIndirectCall}.
void LoadIndirectFunctionTable(uint32_t table_index, Node** ift_size,
Node** ift_sig_ids, Node** ift_targets,
Node** ift_instances);
Node* BuildIndirectCall(uint32_t table_index, uint32_t sig_index,
Vector<Node*> args, Vector<Node*> rets,
wasm::WasmCodePosition position,
IsReturnCall continuation);
Node* BuildWasmCall(const wasm::FunctionSig* sig, Vector<Node*> args,
Vector<Node*> rets, wasm::WasmCodePosition position,
Node* instance_node, UseRetpoline use_retpoline);
Node* BuildWasmReturnCall(const wasm::FunctionSig* sig, Vector<Node*> args,
wasm::WasmCodePosition position,
Node* instance_node, UseRetpoline use_retpoline);
Node* BuildImportCall(const wasm::FunctionSig* sig, Vector<Node*> args,
Vector<Node*> rets, wasm::WasmCodePosition position,
int func_index, IsReturnCall continuation);
Node* BuildImportCall(const wasm::FunctionSig* sig, Vector<Node*> args,
Vector<Node*> rets, wasm::WasmCodePosition position,
Node* func_index, IsReturnCall continuation);
Node* BuildCallRef(uint32_t sig_index, Vector<Node*> args, Vector<Node*> rets,
CheckForNull null_check, IsReturnCall continuation,
wasm::WasmCodePosition position);
Node* GetBuiltinPointerTarget(int builtin_id);
Node* BuildF32CopySign(Node* left, Node* right);
Node* BuildF64CopySign(Node* left, Node* right);
Node* BuildIntConvertFloat(Node* input, wasm::WasmCodePosition position,
wasm::WasmOpcode);
Node* BuildI32Ctz(Node* input);
Node* BuildI32Popcnt(Node* input);
Node* BuildI64Ctz(Node* input);
Node* BuildI64Popcnt(Node* input);
Node* BuildBitCountingCall(Node* input, ExternalReference ref,
MachineRepresentation input_type);
Node* BuildCFuncInstruction(ExternalReference ref, MachineType type,
Node* input0, Node* input1 = nullptr);
Node* BuildF32Trunc(Node* input);
Node* BuildF32Floor(Node* input);
Node* BuildF32Ceil(Node* input);
Node* BuildF32NearestInt(Node* input);
Node* BuildF64Trunc(Node* input);
Node* BuildF64Floor(Node* input);
Node* BuildF64Ceil(Node* input);
Node* BuildF64NearestInt(Node* input);
Node* BuildI32Rol(Node* left, Node* right);
Node* BuildI64Rol(Node* left, Node* right);
Node* BuildF64Acos(Node* input);
Node* BuildF64Asin(Node* input);
Node* BuildF64Pow(Node* left, Node* right);
Node* BuildF64Mod(Node* left, Node* right);
Node* BuildIntToFloatConversionInstruction(
Node* input, ExternalReference ref,
MachineRepresentation parameter_representation,
const MachineType result_type);
Node* BuildF32SConvertI64(Node* input);
Node* BuildF32UConvertI64(Node* input);
Node* BuildF64SConvertI64(Node* input);
Node* BuildF64UConvertI64(Node* input);
Node* BuildCcallConvertFloat(Node* input, wasm::WasmCodePosition position,
wasm::WasmOpcode opcode);
Node* BuildI32DivS(Node* left, Node* right, wasm::WasmCodePosition position);
Node* BuildI32RemS(Node* left, Node* right, wasm::WasmCodePosition position);
Node* BuildI32DivU(Node* left, Node* right, wasm::WasmCodePosition position);
Node* BuildI32RemU(Node* left, Node* right, wasm::WasmCodePosition position);
Node* BuildI64DivS(Node* left, Node* right, wasm::WasmCodePosition position);
Node* BuildI64RemS(Node* left, Node* right, wasm::WasmCodePosition position);
Node* BuildI64DivU(Node* left, Node* right, wasm::WasmCodePosition position);
Node* BuildI64RemU(Node* left, Node* right, wasm::WasmCodePosition position);
Node* BuildDiv64Call(Node* left, Node* right, ExternalReference ref,
MachineType result_type, wasm::TrapReason trap_zero,
wasm::WasmCodePosition position);
Node* BuildTruncateIntPtrToInt32(Node* value);
Node* BuildChangeInt32ToIntPtr(Node* value);
Node* BuildChangeInt32ToSmi(Node* value);
Node* BuildChangeUint31ToSmi(Node* value);
Node* BuildSmiShiftBitsConstant();
Node* BuildSmiShiftBitsConstant32();
Node* BuildChangeSmiToInt32(Node* value);
Node* BuildChangeSmiToIntPtr(Node* value);
// generates {index > max ? Smi(max) : Smi(index)}
Node* BuildConvertUint32ToSmiWithSaturation(Node* index, uint32_t maxval);
// Asm.js specific functionality.
Node* BuildI32AsmjsSConvertF32(Node* input);
Node* BuildI32AsmjsSConvertF64(Node* input);
Node* BuildI32AsmjsUConvertF32(Node* input);
Node* BuildI32AsmjsUConvertF64(Node* input);
Node* BuildI32AsmjsDivS(Node* left, Node* right);
Node* BuildI32AsmjsRemS(Node* left, Node* right);
Node* BuildI32AsmjsDivU(Node* left, Node* right);
Node* BuildI32AsmjsRemU(Node* left, Node* right);
Node* BuildAsmjsLoadMem(MachineType type, Node* index);
Node* BuildAsmjsStoreMem(MachineType type, Node* index, Node* val);
// Wasm SIMD.
Node* BuildF64x2Ceil(Node* input);
Node* BuildF64x2Floor(Node* input);
Node* BuildF64x2Trunc(Node* input);
Node* BuildF64x2NearestInt(Node* input);
Node* BuildF32x4Ceil(Node* input);
Node* BuildF32x4Floor(Node* input);
Node* BuildF32x4Trunc(Node* input);
Node* BuildF32x4NearestInt(Node* input);
void BuildEncodeException32BitValue(Node* values_array, uint32_t* index,
Node* value);
Node* BuildDecodeException32BitValue(Node* values_array, uint32_t* index);
Node* BuildDecodeException64BitValue(Node* values_array, uint32_t* index);
Node* BuildMultiReturnFixedArrayFromIterable(const wasm::FunctionSig* sig,
Node* iterable, Node* context);
Node* BuildLoadFunctionDataFromJSFunction(Node* closure);
Node* BuildLoadJumpTableOffsetFromExportedFunctionData(Node* function_data);
Node* BuildLoadFunctionIndexFromExportedFunctionData(Node* function_data);
//-----------------------------------------------------------------------
// Operations involving the CEntry, a dependency we want to remove
// to get off the GC heap.
//-----------------------------------------------------------------------
Node* BuildCallToRuntime(Runtime::FunctionId f, Node** parameters,
int parameter_count);
Node* BuildCallToRuntimeWithContext(Runtime::FunctionId f, Node* js_context,
Node** parameters, int parameter_count);
TrapId GetTrapIdForTrap(wasm::TrapReason reason);
void AddInt64LoweringReplacement(CallDescriptor* original,
CallDescriptor* replacement);
CallDescriptor* GetI32AtomicWaitCallDescriptor();
CallDescriptor* GetI64AtomicWaitCallDescriptor();
Node* StoreArgsInStackSlot(
std::initializer_list<std::pair<MachineRepresentation, Node*>> args);
std::unique_ptr<WasmGraphAssembler> gasm_;
Zone* const zone_;
MachineGraph* const mcgraph_;
wasm::CompilationEnv* const env_;
WasmInstanceCacheNodes* instance_cache_ = nullptr;
SetOncePointer<Node> instance_node_;
SetOncePointer<Node> globals_start_;
SetOncePointer<Node> imported_mutable_globals_;
SetOncePointer<Node> stack_check_code_node_;
SetOncePointer<Node> isolate_root_node_;
SetOncePointer<const Operator> stack_check_call_operator_;
bool has_simd_ = false;
bool needs_stack_check_ = false;
const bool untrusted_code_mitigations_ = true;
const wasm::FunctionSig* const sig_;
compiler::WasmDecorator* decorator_ = nullptr;
compiler::SourcePositionTable* const source_position_table_ = nullptr;
std::unique_ptr<Int64LoweringSpecialCase> lowering_special_case_;
CallDescriptor* i32_atomic_wait_descriptor_ = nullptr;
CallDescriptor* i64_atomic_wait_descriptor_ = nullptr;
};
enum WasmCallKind { kWasmFunction, kWasmImportWrapper, kWasmCapiFunction };
V8_EXPORT_PRIVATE CallDescriptor* GetWasmCallDescriptor(
Zone* zone, const wasm::FunctionSig* signature,
WasmGraphBuilder::UseRetpoline use_retpoline =
WasmGraphBuilder::kNoRetpoline,
WasmCallKind kind = kWasmFunction);
V8_EXPORT_PRIVATE CallDescriptor* GetI32WasmCallDescriptor(
Zone* zone, const CallDescriptor* call_descriptor);
V8_EXPORT_PRIVATE CallDescriptor* GetI32WasmCallDescriptorForSimd(
Zone* zone, CallDescriptor* call_descriptor);
AssemblerOptions WasmAssemblerOptions();
AssemblerOptions WasmStubAssemblerOptions();
} // namespace compiler
} // namespace internal
} // namespace v8
#endif // V8_COMPILER_WASM_COMPILER_H_