/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef jit_BaselineCacheIRCompiler_h
#define jit_BaselineCacheIRCompiler_h
#include "mozilla/Attributes.h"
#include "mozilla/Maybe.h"
#include <stdint.h>
#include "jstypes.h"
#include "jit/CacheIR.h"
#include "jit/CacheIRCompiler.h"
#include "jit/CacheIROpsGenerated.h"
#include "jit/CacheIRReader.h"
struct JS_PUBLIC_API JSContext;
class JSScript;
namespace js {
namespace jit {
class CacheIRWriter;
class ICFallbackStub;
class ICScript;
class JitCode;
class Label;
class MacroAssembler;
struct Address;
struct Register;
enum class ICAttachResult { Attached, DuplicateStub, TooLarge, OOM };
ICAttachResult AttachBaselineCacheIRStub(JSContext* cx,
const CacheIRWriter& writer,
CacheKind kind, JSScript* outerScript,
ICScript* icScript,
ICFallbackStub* stub,
const char* name);
ICAttachResult AttachBaselineCacheIRStubLocked(
JSContext* cx,
const CacheIRWriter& writer, CacheKind kind,
JSScript* outerScript, ICScript* icScript, ICFallbackStub* stub,
const char* name,
const gc::AutoMarkingLock& lock);
// BaselineCacheIRCompiler compiles CacheIR to BaselineIC native code.
class MOZ_RAII BaselineCacheIRCompiler : public CacheIRCompiler {
struct CreateThisData {
uint32_t numFixedSlots;
uint32_t numDynamicSlots;
gc::AllocKind allocKind;
uint32_t thisShapeOffset;
uint32_t allocSiteOffset;
};
bool makesGCCalls_;
uint8_t localTracingSlots_ =
0;
Register baselineFrameReg_ = FramePointer;
mozilla::Maybe<CreateThisData> createThisData_;
// This register points to the baseline frame of the caller. It should only
// be used before we enter a stub frame. This is normally the frame pointer
// register, but with --enable-ic-frame-pointers we have to allocate a
// separate register.
inline Register baselineFrameReg() {
MOZ_ASSERT(!enteredStubFrame_);
return baselineFrameReg_;
}
[[nodiscard]]
bool emitStoreSlotShared(
bool isFixed, ObjOperandId objId,
uint32_t offsetOffset,
ValOperandId rhsId);
[[nodiscard]]
bool emitAddAndStoreSlotShared(
CacheOp op, ObjOperandId objId, uint32_t offsetOffset, ValOperandId rhsId,
uint32_t newShapeOffset, mozilla::Maybe<uint32_t> numNewSlotsOffset,
bool preserveWrapper);
bool updateArgc(CallFlags flags,
Register argcReg, uint32_t argcFixed,
Register scratch);
void loadStackObject(ArgumentKind kind, CallFlags flags,
Register argcReg,
Register dest, uint32_t extraArgs =
0);
void pushArguments(
Register argcReg,
Register calleeReg,
Register scratch,
Register scratch2,
Register scratch3, CallFlags flags,
uint32_t argcFixed,
bool isJitCall);
void prepareForArguments(
Register argcReg,
Register calleeReg,
Register scratch,
Register scratch2, CallFlags flags,
uint32_t argcFixed);
void pushNewTarget();
void pushStandardArguments(
Register argcReg,
Register scratch,
Register scratch2, uint32_t argcFixed,
bool isJitCall,
bool isConstructing);
void pushArrayArguments(
Register argcReg,
Register scratch,
Register scratch2,
bool isJitCall,
bool isConstructing);
void pushFunCallArguments(
Register argcReg,
Register calleeReg,
Register scratch,
Register scratch2,
uint32_t argcFixed,
bool isJitCall);
void pushFunApplyArgsObj(
Register argcReg,
Register calleeReg,
Register scratch,
Register scratch2,
bool isJitCall);
void pushFunApplyNullUndefinedArguments(
Register calleeReg,
bool isJitCall);
void pushBoundFunctionArguments(
Register argcReg,
Register calleeReg,
Register scratch,
Register scratch2,
CallFlags flags, uint32_t numBoundArgs,
bool isJitCall);
void createThis(
Register argcReg,
Register calleeReg,
Register scratch,
Register scratch2,
Register scratch3, CallFlags flags,
mozilla::Maybe<uint32_t> numBoundArgs = mozilla::Nothing());
void updateReturnValue();
enum class NativeCallType { Native, ClassHook };
enum class ClearLocalAllocSite { No, Yes };
bool emitCallNativeShared(
NativeCallType callType, ObjOperandId calleeId, Int32OperandId argcId,
CallFlags flags, uint32_t argcFixed,
mozilla::Maybe<
bool> ignoresReturnValue,
mozilla::Maybe<uint32_t> targetOffset,
ClearLocalAllocSite clearLocalAllocSite = ClearLocalAllocSite::No);
void loadAllocSiteIntoContext(uint32_t siteOffset);
enum class StringCode { CodeUnit, CodePoint };
bool emitStringFromCodeResult(Int32OperandId codeId, StringCode stringCode);
enum class StringCharOutOfBounds { Failure, EmptyString, UndefinedValue };
bool emitLoadStringCharResult(StringOperandId strId, Int32OperandId indexId,
StringCharOutOfBounds outOfBounds);
void emitAtomizeString(
Register str,
Register temp, Label* failure);
bool emitCallScriptedGetterShared(ValOperandId receiverId,
ObjOperandId calleeId,
bool sameRealm,
uint32_t nargsAndFlagsOffset,
mozilla::Maybe<uint32_t> icScriptOffset);
bool emitCallScriptedSetterShared(ObjOperandId receiverId,
ObjOperandId calleeId, ValOperandId rhsId,
bool sameRealm,
uint32_t nargsAndFlagsOffset,
mozilla::Maybe<uint32_t> icScriptOffset);
bool emitCallScriptedFunctionShared(ObjOperandId calleeId,
Int32OperandId argcId, CallFlags flags,
uint32_t argcFixed,
mozilla::Maybe<uint32_t> icScriptOffset);
template <typename IdType>
bool emitCallScriptedProxyGetShared(ValOperandId targetId,
ObjOperandId receiverId,
ObjOperandId handlerId,
ObjOperandId trapId, IdType id,
uint32_t nargsAndFlags);
BaselineICPerfSpewer perfSpewer_;
public:
BaselineICPerfSpewer& perfSpewer() {
return perfSpewer_; }
friend class AutoStubFrame;
BaselineCacheIRCompiler(JSContext* cx, TempAllocator& alloc,
const CacheIRWriter& writer, uint32_t stubDataOffset);
[[nodiscard]]
bool init(CacheKind kind);
template <typename Fn, Fn fn>
void callVM(MacroAssembler& masm);
JitCode* compile();
bool makesGCCalls()
const;
bool localTracingSlots()
const {
return localTracingSlots_; }
Address stubAddress(uint32_t offset)
const;
private:
CACHE_IR_COMPILER_UNSHARED_GENERATED
};
}
// namespace jit
}
// namespace js
#endif /* jit_BaselineCacheIRCompiler_h */