| // 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_INTERPRETER_BYTECODES_H_ |
| #define V8_INTERPRETER_BYTECODES_H_ |
| |
| #include <cstdint> |
| #include <iosfwd> |
| #include <string> |
| |
| #include "src/common/globals.h" |
| #include "src/interpreter/bytecode-operands.h" |
| |
| // This interface and it's implementation are independent of the |
| // libv8_base library as they are used by the interpreter and the |
| // standalone mkpeephole table generator program. |
| |
| namespace v8 { |
| namespace internal { |
| namespace interpreter { |
| |
| // The list of single-byte Star variants, in the format of BYTECODE_LIST. |
| #define SHORT_STAR_BYTECODE_LIST(V) \ |
| V(Star15, ImplicitRegisterUse::kReadAccumulatorWriteShortStar) \ |
| V(Star14, ImplicitRegisterUse::kReadAccumulatorWriteShortStar) \ |
| V(Star13, ImplicitRegisterUse::kReadAccumulatorWriteShortStar) \ |
| V(Star12, ImplicitRegisterUse::kReadAccumulatorWriteShortStar) \ |
| V(Star11, ImplicitRegisterUse::kReadAccumulatorWriteShortStar) \ |
| V(Star10, ImplicitRegisterUse::kReadAccumulatorWriteShortStar) \ |
| V(Star9, ImplicitRegisterUse::kReadAccumulatorWriteShortStar) \ |
| V(Star8, ImplicitRegisterUse::kReadAccumulatorWriteShortStar) \ |
| V(Star7, ImplicitRegisterUse::kReadAccumulatorWriteShortStar) \ |
| V(Star6, ImplicitRegisterUse::kReadAccumulatorWriteShortStar) \ |
| V(Star5, ImplicitRegisterUse::kReadAccumulatorWriteShortStar) \ |
| V(Star4, ImplicitRegisterUse::kReadAccumulatorWriteShortStar) \ |
| V(Star3, ImplicitRegisterUse::kReadAccumulatorWriteShortStar) \ |
| V(Star2, ImplicitRegisterUse::kReadAccumulatorWriteShortStar) \ |
| V(Star1, ImplicitRegisterUse::kReadAccumulatorWriteShortStar) \ |
| V(Star0, ImplicitRegisterUse::kReadAccumulatorWriteShortStar) |
| |
| // The list of bytecodes which have unique handlers (no other bytecode is |
| // executed using identical code). |
| // Format is V(<bytecode>, <implicit_register_use>, <operands>). |
| // Use V_TSA for bytecode handlers for which a TSA-based (Turboshaft Assembler) |
| // alternative implementation exists, which will be used when |
| // V8_ENABLE_EXPERIMENTAL_TSA_BUILTINS is set. Otherwise V_TSA is identical to |
| // V. |
| #define BYTECODE_LIST_WITH_UNIQUE_HANDLERS_IMPL(V, V_TSA) \ |
| /* Extended width operands */ \ |
| V(Wide, ImplicitRegisterUse::kNone) \ |
| V(ExtraWide, ImplicitRegisterUse::kNone) \ |
| \ |
| /* Debug Breakpoints - one for each possible size of unscaled bytecodes */ \ |
| /* and one for each operand widening prefix bytecode */ \ |
| V(DebugBreakWide, ImplicitRegisterUse::kReadWriteAccumulator) \ |
| V(DebugBreakExtraWide, ImplicitRegisterUse::kReadWriteAccumulator) \ |
| V(DebugBreak0, ImplicitRegisterUse::kReadWriteAccumulator) \ |
| V(DebugBreak1, ImplicitRegisterUse::kReadWriteAccumulator, \ |
| OperandType::kReg) \ |
| V(DebugBreak2, ImplicitRegisterUse::kReadWriteAccumulator, \ |
| OperandType::kReg, OperandType::kReg) \ |
| V(DebugBreak3, ImplicitRegisterUse::kReadWriteAccumulator, \ |
| OperandType::kReg, OperandType::kReg, OperandType::kReg) \ |
| V(DebugBreak4, ImplicitRegisterUse::kReadWriteAccumulator, \ |
| OperandType::kReg, OperandType::kReg, OperandType::kReg, \ |
| OperandType::kReg) \ |
| V(DebugBreak5, ImplicitRegisterUse::kReadWriteAccumulator, \ |
| OperandType::kRuntimeId, OperandType::kReg, OperandType::kReg) \ |
| V(DebugBreak6, ImplicitRegisterUse::kReadWriteAccumulator, \ |
| OperandType::kRuntimeId, OperandType::kReg, OperandType::kReg, \ |
| OperandType::kReg) \ |
| \ |
| /* Side-effect-free bytecodes -- carefully ordered for efficient checks */ \ |
| /* - [Loading the accumulator] */ \ |
| V(Ldar, ImplicitRegisterUse::kWriteAccumulator, OperandType::kReg) \ |
| V(LdaZero, ImplicitRegisterUse::kWriteAccumulator) \ |
| V(LdaSmi, ImplicitRegisterUse::kWriteAccumulator, OperandType::kImm) \ |
| V(LdaUndefined, ImplicitRegisterUse::kWriteAccumulator) \ |
| V(LdaNull, ImplicitRegisterUse::kWriteAccumulator) \ |
| V(LdaTheHole, ImplicitRegisterUse::kWriteAccumulator) \ |
| V(LdaTrue, ImplicitRegisterUse::kWriteAccumulator) \ |
| V(LdaFalse, ImplicitRegisterUse::kWriteAccumulator) \ |
| V(LdaConstant, ImplicitRegisterUse::kWriteAccumulator, OperandType::kIdx) \ |
| V(LdaContextSlot, ImplicitRegisterUse::kWriteAccumulator, OperandType::kReg, \ |
| OperandType::kIdx, OperandType::kUImm) \ |
| V(LdaScriptContextSlot, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kReg, OperandType::kIdx, OperandType::kUImm) \ |
| V(LdaImmutableContextSlot, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kReg, OperandType::kIdx, OperandType::kUImm) \ |
| V(LdaCurrentContextSlot, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kIdx) \ |
| V(LdaCurrentScriptContextSlot, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kIdx) \ |
| V(LdaImmutableCurrentContextSlot, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kIdx) \ |
| /* - [Register Loads ] */ \ |
| V(Star, ImplicitRegisterUse::kReadAccumulator, OperandType::kRegOut) \ |
| V(Mov, ImplicitRegisterUse::kNone, OperandType::kReg, OperandType::kRegOut) \ |
| V(PushContext, ImplicitRegisterUse::kReadAccumulator, OperandType::kRegOut) \ |
| V(PopContext, ImplicitRegisterUse::kNone, OperandType::kReg) \ |
| /* - [Test Operations ] */ \ |
| V(TestReferenceEqual, ImplicitRegisterUse::kReadWriteAccumulator, \ |
| OperandType::kReg) \ |
| V(TestUndetectable, ImplicitRegisterUse::kReadWriteAccumulator) \ |
| V(TestNull, ImplicitRegisterUse::kReadWriteAccumulator) \ |
| V(TestUndefined, ImplicitRegisterUse::kReadWriteAccumulator) \ |
| V(TestTypeOf, ImplicitRegisterUse::kReadWriteAccumulator, \ |
| OperandType::kFlag8) \ |
| \ |
| /* Globals */ \ |
| V(LdaGlobal, ImplicitRegisterUse::kWriteAccumulator, OperandType::kIdx, \ |
| OperandType::kIdx) \ |
| V(LdaGlobalInsideTypeof, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kIdx, OperandType::kIdx) \ |
| V(StaGlobal, ImplicitRegisterUse::kReadAndClobberAccumulator, \ |
| OperandType::kIdx, OperandType::kIdx) \ |
| \ |
| /* Context operations */ \ |
| V(StaContextSlot, ImplicitRegisterUse::kReadAccumulator, OperandType::kReg, \ |
| OperandType::kIdx, OperandType::kUImm) \ |
| V(StaCurrentContextSlot, ImplicitRegisterUse::kReadAccumulator, \ |
| OperandType::kIdx) \ |
| V(StaScriptContextSlot, ImplicitRegisterUse::kReadAccumulator, \ |
| OperandType::kReg, OperandType::kIdx, OperandType::kUImm) \ |
| V(StaCurrentScriptContextSlot, ImplicitRegisterUse::kReadAccumulator, \ |
| OperandType::kIdx) \ |
| \ |
| /* Load-Store lookup slots */ \ |
| V(LdaLookupSlot, ImplicitRegisterUse::kWriteAccumulator, OperandType::kIdx) \ |
| V(LdaLookupContextSlot, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kIdx, OperandType::kIdx, OperandType::kUImm) \ |
| V(LdaLookupScriptContextSlot, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kIdx, OperandType::kIdx, OperandType::kUImm) \ |
| V(LdaLookupGlobalSlot, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kIdx, OperandType::kIdx, OperandType::kUImm) \ |
| V(LdaLookupSlotInsideTypeof, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kIdx) \ |
| V(LdaLookupContextSlotInsideTypeof, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kIdx, OperandType::kIdx, OperandType::kUImm) \ |
| V(LdaLookupScriptContextSlotInsideTypeof, \ |
| ImplicitRegisterUse::kWriteAccumulator, OperandType::kIdx, \ |
| OperandType::kIdx, OperandType::kUImm) \ |
| V(LdaLookupGlobalSlotInsideTypeof, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kIdx, OperandType::kIdx, OperandType::kUImm) \ |
| V(StaLookupSlot, ImplicitRegisterUse::kReadWriteAccumulator, \ |
| OperandType::kIdx, OperandType::kFlag8) \ |
| \ |
| /* Property loads (LoadIC) operations */ \ |
| V(GetNamedProperty, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kReg, OperandType::kIdx, OperandType::kIdx) \ |
| V(GetNamedPropertyFromSuper, ImplicitRegisterUse::kReadWriteAccumulator, \ |
| OperandType::kReg, OperandType::kIdx, OperandType::kIdx) \ |
| V(GetKeyedProperty, ImplicitRegisterUse::kReadWriteAccumulator, \ |
| OperandType::kReg, OperandType::kIdx) \ |
| V(GetEnumeratedKeyedProperty, ImplicitRegisterUse::kReadWriteAccumulator, \ |
| OperandType::kReg, OperandType::kReg, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| \ |
| /* Operations on module variables */ \ |
| V(LdaModuleVariable, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kImm, OperandType::kUImm) \ |
| V(StaModuleVariable, ImplicitRegisterUse::kReadAccumulator, \ |
| OperandType::kImm, OperandType::kUImm) \ |
| \ |
| /* Propery stores (StoreIC) operations */ \ |
| V(SetNamedProperty, ImplicitRegisterUse::kReadAndClobberAccumulator, \ |
| OperandType::kReg, OperandType::kIdx, OperandType::kIdx) \ |
| V(DefineNamedOwnProperty, ImplicitRegisterUse::kReadAndClobberAccumulator, \ |
| OperandType::kReg, OperandType::kIdx, OperandType::kIdx) \ |
| V(SetKeyedProperty, ImplicitRegisterUse::kReadAndClobberAccumulator, \ |
| OperandType::kReg, OperandType::kReg, OperandType::kIdx) \ |
| V(DefineKeyedOwnProperty, ImplicitRegisterUse::kReadAndClobberAccumulator, \ |
| OperandType::kReg, OperandType::kReg, OperandType::kFlag8, \ |
| OperandType::kIdx) \ |
| V(StaInArrayLiteral, ImplicitRegisterUse::kReadAndClobberAccumulator, \ |
| OperandType::kReg, OperandType::kReg, OperandType::kIdx) \ |
| V(DefineKeyedOwnPropertyInLiteral, ImplicitRegisterUse::kReadAccumulator, \ |
| OperandType::kReg, OperandType::kReg, OperandType::kFlag8, \ |
| OperandType::kIdx) \ |
| \ |
| /* Binary Operators */ \ |
| V(Add, ImplicitRegisterUse::kReadWriteAccumulator, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| V(Sub, ImplicitRegisterUse::kReadWriteAccumulator, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| V(Mul, ImplicitRegisterUse::kReadWriteAccumulator, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| V(Div, ImplicitRegisterUse::kReadWriteAccumulator, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| V(Mod, ImplicitRegisterUse::kReadWriteAccumulator, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| V(Exp, ImplicitRegisterUse::kReadWriteAccumulator, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| V(BitwiseOr, ImplicitRegisterUse::kReadWriteAccumulator, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| V(BitwiseXor, ImplicitRegisterUse::kReadWriteAccumulator, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| V(BitwiseAnd, ImplicitRegisterUse::kReadWriteAccumulator, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| V(ShiftLeft, ImplicitRegisterUse::kReadWriteAccumulator, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| V(ShiftRight, ImplicitRegisterUse::kReadWriteAccumulator, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| V(ShiftRightLogical, ImplicitRegisterUse::kReadWriteAccumulator, \ |
| OperandType::kReg, OperandType::kIdx) \ |
| \ |
| /* Specialized binary operators. */ \ |
| V(Add_LhsIsStringConstant_Internalize, \ |
| ImplicitRegisterUse::kReadWriteAccumulator, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| \ |
| /* Binary operators with immediate operands */ \ |
| V(AddSmi, ImplicitRegisterUse::kReadWriteAccumulator, OperandType::kImm, \ |
| OperandType::kIdx) \ |
| V(SubSmi, ImplicitRegisterUse::kReadWriteAccumulator, OperandType::kImm, \ |
| OperandType::kIdx) \ |
| V(MulSmi, ImplicitRegisterUse::kReadWriteAccumulator, OperandType::kImm, \ |
| OperandType::kIdx) \ |
| V(DivSmi, ImplicitRegisterUse::kReadWriteAccumulator, OperandType::kImm, \ |
| OperandType::kIdx) \ |
| V(ModSmi, ImplicitRegisterUse::kReadWriteAccumulator, OperandType::kImm, \ |
| OperandType::kIdx) \ |
| V(ExpSmi, ImplicitRegisterUse::kReadWriteAccumulator, OperandType::kImm, \ |
| OperandType::kIdx) \ |
| V(BitwiseOrSmi, ImplicitRegisterUse::kReadWriteAccumulator, \ |
| OperandType::kImm, OperandType::kIdx) \ |
| V(BitwiseXorSmi, ImplicitRegisterUse::kReadWriteAccumulator, \ |
| OperandType::kImm, OperandType::kIdx) \ |
| V(BitwiseAndSmi, ImplicitRegisterUse::kReadWriteAccumulator, \ |
| OperandType::kImm, OperandType::kIdx) \ |
| V(ShiftLeftSmi, ImplicitRegisterUse::kReadWriteAccumulator, \ |
| OperandType::kImm, OperandType::kIdx) \ |
| V(ShiftRightSmi, ImplicitRegisterUse::kReadWriteAccumulator, \ |
| OperandType::kImm, OperandType::kIdx) \ |
| V(ShiftRightLogicalSmi, ImplicitRegisterUse::kReadWriteAccumulator, \ |
| OperandType::kImm, OperandType::kIdx) \ |
| \ |
| /* Unary Operators */ \ |
| V(Inc, ImplicitRegisterUse::kReadWriteAccumulator, OperandType::kIdx) \ |
| V(Dec, ImplicitRegisterUse::kReadWriteAccumulator, OperandType::kIdx) \ |
| V(Negate, ImplicitRegisterUse::kReadWriteAccumulator, OperandType::kIdx) \ |
| V_TSA(BitwiseNot, ImplicitRegisterUse::kReadWriteAccumulator, \ |
| OperandType::kIdx) \ |
| V(ToBooleanLogicalNot, ImplicitRegisterUse::kReadWriteAccumulator) \ |
| V(LogicalNot, ImplicitRegisterUse::kReadWriteAccumulator) \ |
| V(TypeOf, ImplicitRegisterUse::kReadWriteAccumulator, OperandType::kIdx) \ |
| V(DeletePropertyStrict, ImplicitRegisterUse::kReadWriteAccumulator, \ |
| OperandType::kReg) \ |
| V(DeletePropertySloppy, ImplicitRegisterUse::kReadWriteAccumulator, \ |
| OperandType::kReg) \ |
| \ |
| /* GetSuperConstructor operator */ \ |
| V(GetSuperConstructor, ImplicitRegisterUse::kReadAccumulator, \ |
| OperandType::kRegOut) \ |
| V(FindNonDefaultConstructorOrConstruct, ImplicitRegisterUse::kNone, \ |
| OperandType::kReg, OperandType::kReg, OperandType::kRegOutPair) \ |
| \ |
| /* Call operations */ \ |
| V(CallAnyReceiver, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kReg, OperandType::kRegList, OperandType::kRegCount, \ |
| OperandType::kIdx) \ |
| V(CallProperty, ImplicitRegisterUse::kWriteAccumulator, OperandType::kReg, \ |
| OperandType::kRegList, OperandType::kRegCount, OperandType::kIdx) \ |
| V(CallProperty0, ImplicitRegisterUse::kWriteAccumulator, OperandType::kReg, \ |
| OperandType::kReg, OperandType::kIdx) \ |
| V(CallProperty1, ImplicitRegisterUse::kWriteAccumulator, OperandType::kReg, \ |
| OperandType::kReg, OperandType::kReg, OperandType::kIdx) \ |
| V(CallProperty2, ImplicitRegisterUse::kWriteAccumulator, OperandType::kReg, \ |
| OperandType::kReg, OperandType::kReg, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| V(CallUndefinedReceiver, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kReg, OperandType::kRegList, OperandType::kRegCount, \ |
| OperandType::kIdx) \ |
| V(CallUndefinedReceiver0, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kReg, OperandType::kIdx) \ |
| V(CallUndefinedReceiver1, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kReg, OperandType::kReg, OperandType::kIdx) \ |
| V(CallUndefinedReceiver2, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kReg, OperandType::kReg, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| V(CallWithSpread, ImplicitRegisterUse::kWriteAccumulator, OperandType::kReg, \ |
| OperandType::kRegList, OperandType::kRegCount, OperandType::kIdx) \ |
| V(CallRuntime, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kRuntimeId, OperandType::kRegList, OperandType::kRegCount) \ |
| V(CallRuntimeForPair, ImplicitRegisterUse::kClobberAccumulator, \ |
| OperandType::kRuntimeId, OperandType::kRegList, OperandType::kRegCount, \ |
| OperandType::kRegOutPair) \ |
| V(CallJSRuntime, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kNativeContextIndex, OperandType::kRegList, \ |
| OperandType::kRegCount) \ |
| \ |
| /* Intrinsics */ \ |
| V(InvokeIntrinsic, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kIntrinsicId, OperandType::kRegList, OperandType::kRegCount) \ |
| \ |
| /* Construct operators */ \ |
| V(Construct, ImplicitRegisterUse::kReadWriteAccumulator, OperandType::kReg, \ |
| OperandType::kRegList, OperandType::kRegCount, OperandType::kIdx) \ |
| V(ConstructWithSpread, ImplicitRegisterUse::kReadWriteAccumulator, \ |
| OperandType::kReg, OperandType::kRegList, OperandType::kRegCount, \ |
| OperandType::kIdx) \ |
| V(ConstructForwardAllArgs, ImplicitRegisterUse::kReadWriteAccumulator, \ |
| OperandType::kReg, OperandType::kIdx) \ |
| \ |
| /* Effectful Test Operators */ \ |
| V(TestEqual, ImplicitRegisterUse::kReadWriteAccumulator, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| V(TestEqualStrict, ImplicitRegisterUse::kReadWriteAccumulator, \ |
| OperandType::kReg, OperandType::kIdx) \ |
| V(TestLessThan, ImplicitRegisterUse::kReadWriteAccumulator, \ |
| OperandType::kReg, OperandType::kIdx) \ |
| V(TestGreaterThan, ImplicitRegisterUse::kReadWriteAccumulator, \ |
| OperandType::kReg, OperandType::kIdx) \ |
| V(TestLessThanOrEqual, ImplicitRegisterUse::kReadWriteAccumulator, \ |
| OperandType::kReg, OperandType::kIdx) \ |
| V(TestGreaterThanOrEqual, ImplicitRegisterUse::kReadWriteAccumulator, \ |
| OperandType::kReg, OperandType::kIdx) \ |
| V(TestInstanceOf, ImplicitRegisterUse::kReadWriteAccumulator, \ |
| OperandType::kReg, OperandType::kIdx) \ |
| V(TestIn, ImplicitRegisterUse::kReadWriteAccumulator, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| \ |
| /* Cast operators */ \ |
| V(ToName, ImplicitRegisterUse::kReadWriteAccumulator) \ |
| V(ToNumber, ImplicitRegisterUse::kReadWriteAccumulator, OperandType::kIdx) \ |
| V(ToNumeric, ImplicitRegisterUse::kReadWriteAccumulator, OperandType::kIdx) \ |
| V(ToObject, ImplicitRegisterUse::kReadAccumulator, OperandType::kRegOut) \ |
| V(ToString, ImplicitRegisterUse::kReadWriteAccumulator) \ |
| V(ToBoolean, ImplicitRegisterUse::kReadWriteAccumulator) \ |
| \ |
| /* Literals */ \ |
| V(CreateRegExpLiteral, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kIdx, OperandType::kIdx, OperandType::kFlag16) \ |
| V(CreateArrayLiteral, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kIdx, OperandType::kIdx, OperandType::kFlag8) \ |
| V(CreateArrayFromIterable, ImplicitRegisterUse::kReadWriteAccumulator) \ |
| V(CreateEmptyArrayLiteral, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kIdx) \ |
| V(CreateObjectLiteral, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kIdx, OperandType::kIdx, OperandType::kFlag8) \ |
| V(CreateEmptyObjectLiteral, ImplicitRegisterUse::kWriteAccumulator) \ |
| V(CloneObject, ImplicitRegisterUse::kWriteAccumulator, OperandType::kReg, \ |
| OperandType::kFlag8, OperandType::kIdx) \ |
| \ |
| /* Tagged templates */ \ |
| V(GetTemplateObject, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kIdx, OperandType::kIdx) \ |
| \ |
| /* Closure allocation */ \ |
| V(CreateClosure, ImplicitRegisterUse::kWriteAccumulator, OperandType::kIdx, \ |
| OperandType::kIdx, OperandType::kFlag8) \ |
| \ |
| /* Context allocation */ \ |
| V(CreateBlockContext, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kIdx) \ |
| V(CreateCatchContext, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kReg, OperandType::kIdx) \ |
| V(CreateFunctionContext, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kIdx, OperandType::kUImm) \ |
| V(CreateEvalContext, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kIdx, OperandType::kUImm) \ |
| V(CreateWithContext, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kReg, OperandType::kIdx) \ |
| \ |
| /* Arguments allocation */ \ |
| V(CreateMappedArguments, ImplicitRegisterUse::kWriteAccumulator) \ |
| V(CreateUnmappedArguments, ImplicitRegisterUse::kWriteAccumulator) \ |
| V(CreateRestParameter, ImplicitRegisterUse::kWriteAccumulator) \ |
| \ |
| /* Control Flow -- carefully ordered for efficient checks */ \ |
| /* - [Unconditional jumps] */ \ |
| V(JumpLoop, ImplicitRegisterUse::kClobberAccumulator, OperandType::kUImm, \ |
| OperandType::kImm, OperandType::kIdx) \ |
| /* - [Forward jumps] */ \ |
| V(Jump, ImplicitRegisterUse::kNone, OperandType::kUImm) \ |
| /* - [Start constant jumps] */ \ |
| V(JumpConstant, ImplicitRegisterUse::kNone, OperandType::kIdx) \ |
| /* - [Conditional jumps] */ \ |
| /* - [Conditional constant jumps] */ \ |
| V(JumpIfNullConstant, ImplicitRegisterUse::kReadAccumulator, \ |
| OperandType::kIdx) \ |
| V(JumpIfNotNullConstant, ImplicitRegisterUse::kReadAccumulator, \ |
| OperandType::kIdx) \ |
| V(JumpIfUndefinedConstant, ImplicitRegisterUse::kReadAccumulator, \ |
| OperandType::kIdx) \ |
| V(JumpIfNotUndefinedConstant, ImplicitRegisterUse::kReadAccumulator, \ |
| OperandType::kIdx) \ |
| V(JumpIfUndefinedOrNullConstant, ImplicitRegisterUse::kReadAccumulator, \ |
| OperandType::kIdx) \ |
| V(JumpIfTrueConstant, ImplicitRegisterUse::kReadAccumulator, \ |
| OperandType::kIdx) \ |
| V(JumpIfFalseConstant, ImplicitRegisterUse::kReadAccumulator, \ |
| OperandType::kIdx) \ |
| V(JumpIfJSReceiverConstant, ImplicitRegisterUse::kReadAccumulator, \ |
| OperandType::kIdx) \ |
| V(JumpIfForInDoneConstant, ImplicitRegisterUse::kNone, OperandType::kIdx, \ |
| OperandType::kReg, OperandType::kReg) \ |
| /* - [Start ToBoolean jumps] */ \ |
| V(JumpIfToBooleanTrueConstant, ImplicitRegisterUse::kReadAccumulator, \ |
| OperandType::kIdx) \ |
| V(JumpIfToBooleanFalseConstant, ImplicitRegisterUse::kReadAccumulator, \ |
| OperandType::kIdx) \ |
| /* - [End constant jumps] */ \ |
| /* - [Conditional immediate jumps] */ \ |
| V(JumpIfToBooleanTrue, ImplicitRegisterUse::kReadAccumulator, \ |
| OperandType::kUImm) \ |
| V(JumpIfToBooleanFalse, ImplicitRegisterUse::kReadAccumulator, \ |
| OperandType::kUImm) \ |
| /* - [End ToBoolean jumps] */ \ |
| V(JumpIfTrue, ImplicitRegisterUse::kReadAccumulator, OperandType::kUImm) \ |
| V(JumpIfFalse, ImplicitRegisterUse::kReadAccumulator, OperandType::kUImm) \ |
| V(JumpIfNull, ImplicitRegisterUse::kReadAccumulator, OperandType::kUImm) \ |
| V(JumpIfNotNull, ImplicitRegisterUse::kReadAccumulator, OperandType::kUImm) \ |
| V(JumpIfUndefined, ImplicitRegisterUse::kReadAccumulator, \ |
| OperandType::kUImm) \ |
| V(JumpIfNotUndefined, ImplicitRegisterUse::kReadAccumulator, \ |
| OperandType::kUImm) \ |
| V(JumpIfUndefinedOrNull, ImplicitRegisterUse::kReadAccumulator, \ |
| OperandType::kUImm) \ |
| V(JumpIfJSReceiver, ImplicitRegisterUse::kReadAccumulator, \ |
| OperandType::kUImm) \ |
| V(JumpIfForInDone, ImplicitRegisterUse::kNone, OperandType::kUImm, \ |
| OperandType::kReg, OperandType::kReg) \ |
| \ |
| /* Smi-table lookup for switch statements */ \ |
| V(SwitchOnSmiNoFeedback, ImplicitRegisterUse::kReadAccumulator, \ |
| OperandType::kIdx, OperandType::kUImm, OperandType::kImm) \ |
| \ |
| /* Complex flow control For..in */ \ |
| V(ForInEnumerate, ImplicitRegisterUse::kWriteAccumulator, OperandType::kReg) \ |
| V(ForInPrepare, ImplicitRegisterUse::kReadAndClobberAccumulator, \ |
| OperandType::kRegOutTriple, OperandType::kIdx) \ |
| V(ForInNext, ImplicitRegisterUse::kWriteAccumulator, OperandType::kReg, \ |
| OperandType::kReg, OperandType::kRegPair, OperandType::kIdx) \ |
| V(ForInStep, ImplicitRegisterUse::kNone, OperandType::kRegInOut) \ |
| \ |
| /* Update the pending message */ \ |
| V(SetPendingMessage, ImplicitRegisterUse::kReadWriteAccumulator) \ |
| \ |
| /* Non-local flow control */ \ |
| V(Throw, ImplicitRegisterUse::kReadAccumulator) \ |
| V(ReThrow, ImplicitRegisterUse::kReadAccumulator) \ |
| V(Return, ImplicitRegisterUse::kReadAccumulator) \ |
| V(ThrowReferenceErrorIfHole, ImplicitRegisterUse::kReadAccumulator, \ |
| OperandType::kIdx) \ |
| V(ThrowSuperNotCalledIfHole, ImplicitRegisterUse::kReadAccumulator) \ |
| V(ThrowSuperAlreadyCalledIfNotHole, ImplicitRegisterUse::kReadAccumulator) \ |
| V(ThrowIfNotSuperConstructor, ImplicitRegisterUse::kNone, OperandType::kReg) \ |
| \ |
| /* Generators */ \ |
| V(SwitchOnGeneratorState, ImplicitRegisterUse::kNone, OperandType::kReg, \ |
| OperandType::kIdx, OperandType::kUImm) \ |
| V(SuspendGenerator, ImplicitRegisterUse::kReadAccumulator, \ |
| OperandType::kReg, OperandType::kRegList, OperandType::kRegCount, \ |
| OperandType::kUImm) \ |
| V(ResumeGenerator, ImplicitRegisterUse::kWriteAccumulator, \ |
| OperandType::kReg, OperandType::kRegOutList, OperandType::kRegCount) \ |
| \ |
| /* Iterator protocol operations */ \ |
| V(GetIterator, ImplicitRegisterUse::kWriteAccumulator, OperandType::kReg, \ |
| OperandType::kIdx, OperandType::kIdx) \ |
| \ |
| /* Debugger */ \ |
| V(Debugger, ImplicitRegisterUse::kClobberAccumulator) \ |
| \ |
| /* Block Coverage */ \ |
| V(IncBlockCounter, ImplicitRegisterUse::kNone, OperandType::kIdx) \ |
| \ |
| /* Execution Abort (internal error) */ \ |
| V(Abort, ImplicitRegisterUse::kNone, OperandType::kIdx) |
| |
| #ifdef V8_ENABLE_EXPERIMENTAL_TSA_BUILTINS |
| #define BYTECODE_LIST_WITH_UNIQUE_HANDLERS(V, V_TSA) \ |
| BYTECODE_LIST_WITH_UNIQUE_HANDLERS_IMPL(V, V_TSA) |
| #else |
| #define BYTECODE_LIST_WITH_UNIQUE_HANDLERS(V, V_TSA) \ |
| BYTECODE_LIST_WITH_UNIQUE_HANDLERS_IMPL(V, V) |
| #endif |
| |
| // The list of bytecodes which are interpreted by the interpreter. |
| // Format is V(<bytecode>, <implicit_register_use>, <operands>) and |
| // V_TSA(<bytecode>, <implicit_register_use>, <operands>). |
| #define BYTECODE_LIST(V, V_TSA) \ |
| BYTECODE_LIST_WITH_UNIQUE_HANDLERS(V, V_TSA) \ |
| \ |
| /* Special-case Star for common register numbers, to save space */ \ |
| SHORT_STAR_BYTECODE_LIST(V) \ |
| \ |
| /* Illegal bytecode */ \ |
| V(Illegal, ImplicitRegisterUse::kNone) |
| |
| // List of debug break bytecodes. |
| #define DEBUG_BREAK_PLAIN_BYTECODE_LIST(V) \ |
| V(DebugBreak0) \ |
| V(DebugBreak1) \ |
| V(DebugBreak2) \ |
| V(DebugBreak3) \ |
| V(DebugBreak4) \ |
| V(DebugBreak5) \ |
| V(DebugBreak6) |
| |
| #define DEBUG_BREAK_PREFIX_BYTECODE_LIST(V) \ |
| V(DebugBreakWide) \ |
| V(DebugBreakExtraWide) |
| |
| #define DEBUG_BREAK_BYTECODE_LIST(V) \ |
| DEBUG_BREAK_PLAIN_BYTECODE_LIST(V) \ |
| DEBUG_BREAK_PREFIX_BYTECODE_LIST(V) |
| |
| // Lists of jump bytecodes. |
| |
| #define JUMP_UNCONDITIONAL_IMMEDIATE_BYTECODE_LIST(V) \ |
| V(JumpLoop) \ |
| V(Jump) |
| |
| #define JUMP_UNCONDITIONAL_CONSTANT_BYTECODE_LIST(V) V(JumpConstant) |
| |
| #define JUMP_TOBOOLEAN_CONDITIONAL_IMMEDIATE_BYTECODE_LIST(V) \ |
| V(JumpIfToBooleanTrue) \ |
| V(JumpIfToBooleanFalse) |
| |
| #define JUMP_TOBOOLEAN_CONDITIONAL_CONSTANT_BYTECODE_LIST(V) \ |
| V(JumpIfToBooleanTrueConstant) \ |
| V(JumpIfToBooleanFalseConstant) |
| |
| #define JUMP_CONDITIONAL_IMMEDIATE_BYTECODE_LIST(V) \ |
| JUMP_TOBOOLEAN_CONDITIONAL_IMMEDIATE_BYTECODE_LIST(V) \ |
| V(JumpIfTrue) \ |
| V(JumpIfFalse) \ |
| V(JumpIfNull) \ |
| V(JumpIfNotNull) \ |
| V(JumpIfUndefined) \ |
| V(JumpIfNotUndefined) \ |
| V(JumpIfUndefinedOrNull) \ |
| V(JumpIfJSReceiver) \ |
| V(JumpIfForInDone) |
| |
| #define JUMP_CONDITIONAL_CONSTANT_BYTECODE_LIST(V) \ |
| JUMP_TOBOOLEAN_CONDITIONAL_CONSTANT_BYTECODE_LIST(V) \ |
| V(JumpIfNullConstant) \ |
| V(JumpIfNotNullConstant) \ |
| V(JumpIfUndefinedConstant) \ |
| V(JumpIfNotUndefinedConstant) \ |
| V(JumpIfUndefinedOrNullConstant) \ |
| V(JumpIfTrueConstant) \ |
| V(JumpIfFalseConstant) \ |
| V(JumpIfJSReceiverConstant) \ |
| V(JumpIfForInDoneConstant) |
| |
| #define JUMP_CONSTANT_BYTECODE_LIST(V) \ |
| JUMP_UNCONDITIONAL_CONSTANT_BYTECODE_LIST(V) \ |
| JUMP_CONDITIONAL_CONSTANT_BYTECODE_LIST(V) |
| |
| #define JUMP_IMMEDIATE_BYTECODE_LIST(V) \ |
| JUMP_UNCONDITIONAL_IMMEDIATE_BYTECODE_LIST(V) \ |
| JUMP_CONDITIONAL_IMMEDIATE_BYTECODE_LIST(V) |
| |
| #define JUMP_TO_BOOLEAN_BYTECODE_LIST(V) \ |
| JUMP_TOBOOLEAN_CONDITIONAL_IMMEDIATE_BYTECODE_LIST(V) \ |
| JUMP_TOBOOLEAN_CONDITIONAL_CONSTANT_BYTECODE_LIST(V) |
| |
| #define JUMP_UNCONDITIONAL_BYTECODE_LIST(V) \ |
| JUMP_UNCONDITIONAL_IMMEDIATE_BYTECODE_LIST(V) \ |
| JUMP_UNCONDITIONAL_CONSTANT_BYTECODE_LIST(V) |
| |
| #define JUMP_CONDITIONAL_BYTECODE_LIST(V) \ |
| JUMP_CONDITIONAL_IMMEDIATE_BYTECODE_LIST(V) \ |
| JUMP_CONDITIONAL_CONSTANT_BYTECODE_LIST(V) |
| |
| #define JUMP_FORWARD_BYTECODE_LIST(V) \ |
| V(Jump) \ |
| V(JumpConstant) \ |
| JUMP_CONDITIONAL_BYTECODE_LIST(V) |
| |
| #define JUMP_BYTECODE_LIST(V) \ |
| JUMP_FORWARD_BYTECODE_LIST(V) \ |
| V(JumpLoop) |
| |
| #define RETURN_BYTECODE_LIST(V) \ |
| V(Return) \ |
| V(SuspendGenerator) |
| |
| #define UNCONDITIONAL_THROW_BYTECODE_LIST(V) \ |
| V(Throw) \ |
| V(ReThrow) |
| |
| // Enumeration of interpreter bytecodes. |
| enum class Bytecode : uint8_t { |
| #define DECLARE_BYTECODE(Name, ...) k##Name, |
| BYTECODE_LIST(DECLARE_BYTECODE, DECLARE_BYTECODE) |
| #undef DECLARE_BYTECODE |
| #define COUNT_BYTECODE(x, ...) +1 |
| // The COUNT_BYTECODE macro will turn this into kLast = -1 +1 +1... which will |
| // evaluate to the same value as the last real bytecode. |
| kLast = -1 BYTECODE_LIST(COUNT_BYTECODE, COUNT_BYTECODE), |
| kFirstShortStar = kStar15, |
| kLastShortStar = kStar0 |
| #undef COUNT_BYTECODE |
| }; |
| |
| class V8_EXPORT_PRIVATE Bytecodes final : public AllStatic { |
| public: |
| // The maximum number of operands a bytecode may have. |
| static const int kMaxOperands = 5; |
| |
| // The total number of bytecodes used. |
| static const int kBytecodeCount = static_cast<int>(Bytecode::kLast) + 1; |
| |
| static const int kShortStarCount = |
| static_cast<int>(Bytecode::kLastShortStar) - |
| static_cast<int>(Bytecode::kFirstShortStar) + 1; |
| |
| // Returns string representation of |bytecode|. |
| static const char* ToString(Bytecode bytecode); |
| |
| // Returns string representation of |bytecode| combined with |operand_scale| |
| // using the optionally provided |separator|. |
| static std::string ToString(Bytecode bytecode, OperandScale operand_scale, |
| const char* separator = "."); |
| |
| // Returns byte value of bytecode. |
| static uint8_t ToByte(Bytecode bytecode) { |
| DCHECK_LE(bytecode, Bytecode::kLast); |
| return static_cast<uint8_t>(bytecode); |
| } |
| |
| // Returns bytecode for |value|. |
| static Bytecode FromByte(uint8_t value) { |
| Bytecode bytecode = static_cast<Bytecode>(value); |
| DCHECK_LE(bytecode, Bytecode::kLast); |
| return bytecode; |
| } |
| |
| // Returns the prefix bytecode representing an operand scale to be |
| // applied to a a bytecode. |
| static Bytecode OperandScaleToPrefixBytecode(OperandScale operand_scale) { |
| switch (operand_scale) { |
| case OperandScale::kQuadruple: |
| return Bytecode::kExtraWide; |
| case OperandScale::kDouble: |
| return Bytecode::kWide; |
| default: |
| UNREACHABLE(); |
| } |
| } |
| |
| // Returns true if the operand scale requires a prefix bytecode. |
| static bool OperandScaleRequiresPrefixBytecode(OperandScale operand_scale) { |
| return operand_scale != OperandScale::kSingle; |
| } |
| |
| // Returns the scaling applied to scalable operands if bytecode is |
| // is a scaling prefix. |
| static OperandScale PrefixBytecodeToOperandScale(Bytecode bytecode) { |
| #ifdef V8_TARGET_OS_ANDROID |
| // The compiler is very smart, turning the switch into branchless code. |
| // However this triggers a CPU bug on some android devices (see |
| // crbug.com/1379788). We therefore intentionally use code the compiler has |
| // a harder time optimizing on Android. At least until clang 15.0 the |
| // current workaround prevents hitting the CPU bug. |
| // TODO(chromium:1379788): Remove this hack if we get an external fix. |
| if (bytecode == Bytecode::kWide || bytecode == Bytecode::kDebugBreakWide) { |
| return OperandScale::kDouble; |
| } else if (bytecode == Bytecode::kExtraWide || |
| bytecode == Bytecode::kDebugBreakExtraWide) { |
| return OperandScale::kQuadruple; |
| } else { |
| UNREACHABLE(); |
| } |
| #else |
| switch (bytecode) { |
| case Bytecode::kExtraWide: |
| case Bytecode::kDebugBreakExtraWide: |
| return OperandScale::kQuadruple; |
| case Bytecode::kWide: |
| case Bytecode::kDebugBreakWide: |
| return OperandScale::kDouble; |
| default: |
| UNREACHABLE(); |
| } |
| #endif |
| } |
| |
| // Returns how accumulator is used by |bytecode|. |
| static ImplicitRegisterUse GetImplicitRegisterUse(Bytecode bytecode) { |
| DCHECK_LE(bytecode, Bytecode::kLast); |
| return kImplicitRegisterUse[static_cast<size_t>(bytecode)]; |
| } |
| |
| // Returns true if |bytecode| reads the accumulator. |
| static bool ReadsAccumulator(Bytecode bytecode) { |
| return BytecodeOperands::ReadsAccumulator(GetImplicitRegisterUse(bytecode)); |
| } |
| |
| // Returns true if |bytecode| writes the accumulator. |
| static bool WritesAccumulator(Bytecode bytecode) { |
| return BytecodeOperands::WritesAccumulator( |
| GetImplicitRegisterUse(bytecode)); |
| } |
| |
| // Returns true if |bytecode| writes the accumulator. |
| static bool ClobbersAccumulator(Bytecode bytecode) { |
| return BytecodeOperands::ClobbersAccumulator( |
| GetImplicitRegisterUse(bytecode)); |
| } |
| |
| // Returns true if |bytecode| writes the accumulator. |
| static bool WritesOrClobbersAccumulator(Bytecode bytecode) { |
| return BytecodeOperands::WritesOrClobbersAccumulator( |
| GetImplicitRegisterUse(bytecode)); |
| } |
| |
| // Returns true if |bytecode| writes to a register not specified by an |
| // operand. |
| static bool WritesImplicitRegister(Bytecode bytecode) { |
| return BytecodeOperands::WritesImplicitRegister( |
| GetImplicitRegisterUse(bytecode)); |
| } |
| |
| // Return true if |bytecode| is an accumulator load without effects, |
| // e.g. LdaConstant, LdaTrue, Ldar. |
| static constexpr bool IsAccumulatorLoadWithoutEffects(Bytecode bytecode) { |
| static_assert(Bytecode::kLdar < Bytecode::kLdaImmutableCurrentContextSlot); |
| return bytecode >= Bytecode::kLdar && |
| bytecode <= Bytecode::kLdaImmutableCurrentContextSlot; |
| } |
| |
| // Returns true if |bytecode| is a compare operation without external effects |
| // (e.g., Type cooersion). |
| static constexpr bool IsCompareWithoutEffects(Bytecode bytecode) { |
| static_assert(Bytecode::kTestReferenceEqual < Bytecode::kTestTypeOf); |
| return bytecode >= Bytecode::kTestReferenceEqual && |
| bytecode <= Bytecode::kTestTypeOf; |
| } |
| |
| static constexpr bool IsShortStar(Bytecode bytecode) { |
| return bytecode >= Bytecode::kFirstShortStar && |
| bytecode <= Bytecode::kLastShortStar; |
| } |
| |
| static constexpr bool IsAnyStar(Bytecode bytecode) { |
| return bytecode == Bytecode::kStar || IsShortStar(bytecode); |
| } |
| |
| // Return true if |bytecode| is a register load without effects, |
| // e.g. Mov, Star. |
| static constexpr bool IsRegisterLoadWithoutEffects(Bytecode bytecode) { |
| return IsShortStar(bytecode) || |
| (bytecode >= Bytecode::kStar && bytecode <= Bytecode::kPopContext); |
| } |
| |
| // Returns true if the bytecode is a conditional jump taking |
| // an immediate byte operand (OperandType::kImm). |
| static constexpr bool IsConditionalJumpImmediate(Bytecode bytecode) { |
| return bytecode >= Bytecode::kJumpIfToBooleanTrue && |
| bytecode <= Bytecode::kJumpIfForInDone; |
| } |
| |
| // Returns true if the bytecode is a conditional jump taking |
| // a constant pool entry (OperandType::kIdx). |
| static constexpr bool IsConditionalJumpConstant(Bytecode bytecode) { |
| return bytecode >= Bytecode::kJumpIfNullConstant && |
| bytecode <= Bytecode::kJumpIfToBooleanFalseConstant; |
| } |
| |
| // Returns true if the bytecode is a conditional jump taking |
| // any kind of operand. |
| static constexpr bool IsConditionalJump(Bytecode bytecode) { |
| return bytecode >= Bytecode::kJumpIfNullConstant && |
| bytecode <= Bytecode::kJumpIfForInDone; |
| } |
| |
| // Returns true if the bytecode is an unconditional jump. |
| static constexpr bool IsUnconditionalJump(Bytecode bytecode) { |
| return bytecode >= Bytecode::kJumpLoop && |
| bytecode <= Bytecode::kJumpConstant; |
| } |
| |
| // Returns true if the bytecode is a jump or a conditional jump taking |
| // an immediate byte operand (OperandType::kImm). |
| static constexpr bool IsJumpImmediate(Bytecode bytecode) { |
| return bytecode == Bytecode::kJump || bytecode == Bytecode::kJumpLoop || |
| IsConditionalJumpImmediate(bytecode); |
| } |
| |
| // Returns true if the bytecode is a jump or conditional jump taking a |
| // constant pool entry (OperandType::kIdx). |
| static constexpr bool IsJumpConstant(Bytecode bytecode) { |
| return bytecode >= Bytecode::kJumpConstant && |
| bytecode <= Bytecode::kJumpIfToBooleanFalseConstant; |
| } |
| |
| // Returns true if the bytecode is a jump that internally coerces the |
| // accumulator to a boolean. |
| static constexpr bool IsJumpIfToBoolean(Bytecode bytecode) { |
| return bytecode >= Bytecode::kJumpIfToBooleanTrueConstant && |
| bytecode <= Bytecode::kJumpIfToBooleanFalse; |
| } |
| |
| // Returns true if the bytecode is a jump or conditional jump taking |
| // any kind of operand. |
| static constexpr bool IsJump(Bytecode bytecode) { |
| return bytecode >= Bytecode::kJumpLoop && |
| bytecode <= Bytecode::kJumpIfForInDone; |
| } |
| |
| // Returns true if the bytecode is a forward jump or conditional jump taking |
| // any kind of operand. |
| static constexpr bool IsForwardJump(Bytecode bytecode) { |
| return bytecode >= Bytecode::kJump && |
| bytecode <= Bytecode::kJumpIfForInDone; |
| } |
| |
| // Return true if |bytecode| is a jump without effects, |
| // e.g. any jump excluding those that include type coercion like |
| // JumpIfTrueToBoolean, and JumpLoop due to having an implicit StackCheck. |
| static constexpr bool IsJumpWithoutEffects(Bytecode bytecode) { |
| return IsJump(bytecode) && !IsJumpIfToBoolean(bytecode) && |
| bytecode != Bytecode::kJumpLoop; |
| } |
| |
| // Returns true if the bytecode is a switch. |
| static constexpr bool IsSwitch(Bytecode bytecode) { |
| return bytecode == Bytecode::kSwitchOnSmiNoFeedback || |
| bytecode == Bytecode::kSwitchOnGeneratorState; |
| } |
| |
| // Returns true if |bytecode| has no effects. These bytecodes only manipulate |
| // interpreter frame state and will never throw. |
| static constexpr bool IsWithoutExternalSideEffects(Bytecode bytecode) { |
| return (IsAccumulatorLoadWithoutEffects(bytecode) || |
| IsRegisterLoadWithoutEffects(bytecode) || |
| IsCompareWithoutEffects(bytecode) || |
| IsJumpWithoutEffects(bytecode) || IsSwitch(bytecode) || |
| bytecode == Bytecode::kReturn); |
| } |
| |
| // Returns true if the bytecode is Ldar or Star. |
| static constexpr bool IsLdarOrStar(Bytecode bytecode) { |
| return bytecode == Bytecode::kLdar || IsAnyStar(bytecode); |
| } |
| |
| // Returns true if the bytecode is a call or a constructor call. |
| static constexpr bool IsCallOrConstruct(Bytecode bytecode) { |
| return bytecode == Bytecode::kCallAnyReceiver || |
| bytecode == Bytecode::kCallProperty || |
| bytecode == Bytecode::kCallProperty0 || |
| bytecode == Bytecode::kCallProperty1 || |
| bytecode == Bytecode::kCallProperty2 || |
| bytecode == Bytecode::kCallUndefinedReceiver || |
| bytecode == Bytecode::kCallUndefinedReceiver0 || |
| bytecode == Bytecode::kCallUndefinedReceiver1 || |
| bytecode == Bytecode::kCallUndefinedReceiver2 || |
| bytecode == Bytecode::kConstruct || |
| bytecode == Bytecode::kCallWithSpread || |
| bytecode == Bytecode::kConstructWithSpread || |
| bytecode == Bytecode::kConstructForwardAllArgs || |
| bytecode == Bytecode::kCallJSRuntime; |
| } |
| |
| // Returns true if the bytecode is a call to the runtime. |
| static constexpr bool IsCallRuntime(Bytecode bytecode) { |
| return bytecode == Bytecode::kCallRuntime || |
| bytecode == Bytecode::kCallRuntimeForPair || |
| bytecode == Bytecode::kInvokeIntrinsic; |
| } |
| |
| // Returns true if the bytecode is a scaling prefix bytecode. |
| static constexpr bool IsPrefixScalingBytecode(Bytecode bytecode) { |
| return bytecode == Bytecode::kExtraWide || bytecode == Bytecode::kWide || |
| bytecode == Bytecode::kDebugBreakExtraWide || |
| bytecode == Bytecode::kDebugBreakWide; |
| } |
| |
| // Returns true if the bytecode returns. |
| static constexpr bool Returns(Bytecode bytecode) { |
| #define OR_BYTECODE(NAME) || bytecode == Bytecode::k##NAME |
| return false RETURN_BYTECODE_LIST(OR_BYTECODE); |
| #undef OR_BYTECODE |
| } |
| |
| // Returns true if the bytecode unconditionally throws. |
| static constexpr bool UnconditionallyThrows(Bytecode bytecode) { |
| #define OR_BYTECODE(NAME) || bytecode == Bytecode::k##NAME |
| return false UNCONDITIONAL_THROW_BYTECODE_LIST(OR_BYTECODE); |
| #undef OR_BYTECODE |
| } |
| |
| // Returns the number of operands expected by |bytecode|. |
| static int NumberOfOperands(Bytecode bytecode) { |
| // Using V8_ASSUME instead of DCHECK here works around a spurious GCC |
| // warning -- somehow GCC thinks that bytecode == kLast+1 can happen here. |
| V8_ASSUME(bytecode <= Bytecode::kLast); |
| return kOperandCount[static_cast<uint8_t>(bytecode)]; |
| } |
| |
| // Returns the i-th operand of |bytecode|. |
| static OperandType GetOperandType(Bytecode bytecode, int i) { |
| DCHECK_LE(bytecode, Bytecode::kLast); |
| DCHECK_LT(i, NumberOfOperands(bytecode)); |
| DCHECK_GE(i, 0); |
| return GetOperandTypes(bytecode)[i]; |
| } |
| |
| // Returns a pointer to an array of operand types terminated in |
| // OperandType::kNone. |
| static const OperandType* GetOperandTypes(Bytecode bytecode) { |
| DCHECK_LE(bytecode, Bytecode::kLast); |
| return kOperandTypes[static_cast<size_t>(bytecode)]; |
| } |
| |
| static bool OperandIsScalableSignedByte(Bytecode bytecode, |
| int operand_index) { |
| DCHECK_LE(bytecode, Bytecode::kLast); |
| return kOperandTypeInfos[static_cast<size_t>(bytecode)][operand_index] == |
| OperandTypeInfo::kScalableSignedByte; |
| } |
| |
| static bool OperandIsScalableUnsignedByte(Bytecode bytecode, |
| int operand_index) { |
| DCHECK_LE(bytecode, Bytecode::kLast); |
| return kOperandTypeInfos[static_cast<size_t>(bytecode)][operand_index] == |
| OperandTypeInfo::kScalableUnsignedByte; |
| } |
| |
| static bool OperandIsScalable(Bytecode bytecode, int operand_index) { |
| return OperandIsScalableSignedByte(bytecode, operand_index) || |
| OperandIsScalableUnsignedByte(bytecode, operand_index); |
| } |
| |
| // Returns true if the bytecode has wider operand forms. |
| static bool IsBytecodeWithScalableOperands(Bytecode bytecode); |
| |
| // Returns the size of the i-th operand of |bytecode|. |
| static OperandSize GetOperandSize(Bytecode bytecode, int i, |
| OperandScale operand_scale) { |
| CHECK_LT(i, NumberOfOperands(bytecode)); |
| return GetOperandSizes(bytecode, operand_scale)[i]; |
| } |
| |
| // Returns the operand sizes of |bytecode| with scale |operand_scale|. |
| static const OperandSize* GetOperandSizes(Bytecode bytecode, |
| OperandScale operand_scale) { |
| DCHECK_LE(bytecode, Bytecode::kLast); |
| DCHECK_GE(operand_scale, OperandScale::kSingle); |
| DCHECK_LE(operand_scale, OperandScale::kLast); |
| static_assert(static_cast<int>(OperandScale::kQuadruple) == 4 && |
| OperandScale::kLast == OperandScale::kQuadruple); |
| int scale_index = static_cast<int>(operand_scale) >> 1; |
| return kOperandSizes[scale_index][static_cast<size_t>(bytecode)]; |
| } |
| |
| // Returns the offset of the i-th operand of |bytecode| relative to the start |
| // of the bytecode. |
| static int GetOperandOffset(Bytecode bytecode, int i, |
| OperandScale operand_scale) { |
| DCHECK_LE(bytecode, Bytecode::kLast); |
| DCHECK_GE(operand_scale, OperandScale::kSingle); |
| DCHECK_LE(operand_scale, OperandScale::kLast); |
| static_assert(static_cast<int>(OperandScale::kQuadruple) == 4 && |
| OperandScale::kLast == OperandScale::kQuadruple); |
| int scale_index = static_cast<int>(operand_scale) >> 1; |
| return kOperandOffsets[scale_index][static_cast<size_t>(bytecode)][i]; |
| } |
| |
| // Returns the size of the bytecode including its operands for the |
| // given |operand_scale|. |
| static int Size(Bytecode bytecode, OperandScale operand_scale) { |
| DCHECK_LE(bytecode, Bytecode::kLast); |
| static_assert(static_cast<int>(OperandScale::kQuadruple) == 4 && |
| OperandScale::kLast == OperandScale::kQuadruple); |
| int scale_index = static_cast<int>(operand_scale) >> 1; |
| return kBytecodeSizes[scale_index][static_cast<size_t>(bytecode)]; |
| } |
| |
| // Returns a debug break bytecode to replace |bytecode|. |
| static Bytecode GetDebugBreak(Bytecode bytecode); |
| |
| // Returns true if there is a call in the most-frequently executed path |
| // through the bytecode's handler. |
| static bool MakesCallAlongCriticalPath(Bytecode bytecode); |
| |
| // Returns the receiver mode of the given call bytecode. |
| static ConvertReceiverMode GetReceiverMode(Bytecode bytecode) { |
| DCHECK(IsCallOrConstruct(bytecode) || |
| bytecode == Bytecode::kInvokeIntrinsic); |
| switch (bytecode) { |
| case Bytecode::kCallProperty: |
| case Bytecode::kCallProperty0: |
| case Bytecode::kCallProperty1: |
| case Bytecode::kCallProperty2: |
| return ConvertReceiverMode::kNotNullOrUndefined; |
| case Bytecode::kCallUndefinedReceiver: |
| case Bytecode::kCallUndefinedReceiver0: |
| case Bytecode::kCallUndefinedReceiver1: |
| case Bytecode::kCallUndefinedReceiver2: |
| case Bytecode::kCallJSRuntime: |
| return ConvertReceiverMode::kNullOrUndefined; |
| case Bytecode::kCallAnyReceiver: |
| case Bytecode::kConstruct: |
| case Bytecode::kCallWithSpread: |
| case Bytecode::kConstructWithSpread: |
| case Bytecode::kInvokeIntrinsic: |
| return ConvertReceiverMode::kAny; |
| default: |
| UNREACHABLE(); |
| } |
| } |
| |
| // Returns true if the bytecode is a debug break. |
| static bool IsDebugBreak(Bytecode bytecode); |
| |
| // Returns true if |operand_type| is any type of register operand. |
| static bool IsRegisterOperandType(OperandType operand_type); |
| |
| // Returns true if |operand_type| represents a register used as an input. |
| static bool IsRegisterInputOperandType(OperandType operand_type); |
| |
| // Returns true if |operand_type| represents a register used as an output. |
| static bool IsRegisterOutputOperandType(OperandType operand_type); |
| |
| // Returns true if |operand_type| represents a register list operand. |
| static bool IsRegisterListOperandType(OperandType operand_type); |
| |
| // Returns true if the handler for |bytecode| should look ahead and inline a |
| // dispatch to a Star bytecode. |
| static bool IsStarLookahead(Bytecode bytecode, OperandScale operand_scale); |
| |
| // Returns the number of registers represented by a register operand. For |
| // instance, a RegPair represents two registers. Should not be called for |
| // kRegList which has a variable number of registers based on the following |
| // kRegCount operand. |
| static int GetNumberOfRegistersRepresentedBy(OperandType operand_type) { |
| switch (operand_type) { |
| case OperandType::kReg: |
| case OperandType::kRegOut: |
| case OperandType::kRegInOut: |
| return 1; |
| case OperandType::kRegPair: |
| case OperandType::kRegOutPair: |
| return 2; |
| case OperandType::kRegOutTriple: |
| return 3; |
| case OperandType::kRegList: |
| case OperandType::kRegOutList: |
| UNREACHABLE(); |
| default: |
| return 0; |
| } |
| UNREACHABLE(); |
| } |
| |
| // Returns the size of |operand_type| for |operand_scale|. |
| static OperandSize SizeOfOperand(OperandType operand_type, |
| OperandScale operand_scale) { |
| DCHECK_LE(operand_type, OperandType::kLast); |
| DCHECK_GE(operand_scale, OperandScale::kSingle); |
| DCHECK_LE(operand_scale, OperandScale::kLast); |
| static_assert(static_cast<int>(OperandScale::kQuadruple) == 4 && |
| OperandScale::kLast == OperandScale::kQuadruple); |
| int scale_index = static_cast<int>(operand_scale) >> 1; |
| return kOperandKindSizes[scale_index][static_cast<size_t>(operand_type)]; |
| } |
| |
| // Returns true if |operand_type| is a runtime-id operand (kRuntimeId). |
| static bool IsRuntimeIdOperandType(OperandType operand_type); |
| |
| // Returns true if |operand_type| is unsigned, false if signed. |
| static bool IsUnsignedOperandType(OperandType operand_type); |
| |
| // Returns true if a handler is generated for a bytecode at a given |
| // operand scale. All bytecodes have handlers at OperandScale::kSingle, |
| // but only bytecodes with scalable operands have handlers with larger |
| // OperandScale values. |
| static bool BytecodeHasHandler(Bytecode bytecode, OperandScale operand_scale); |
| |
| // Return the operand scale required to hold a signed operand with |value|. |
| static OperandScale ScaleForSignedOperand(int32_t value) { |
| if (value >= kMinInt8 && value <= kMaxInt8) { |
| return OperandScale::kSingle; |
| } else if (value >= kMinInt16 && value <= kMaxInt16) { |
| return OperandScale::kDouble; |
| } else { |
| return OperandScale::kQuadruple; |
| } |
| } |
| |
| // Return the operand scale required to hold an unsigned operand with |value|. |
| static OperandScale ScaleForUnsignedOperand(uint32_t value) { |
| if (value <= kMaxUInt8) { |
| return OperandScale::kSingle; |
| } else if (value <= kMaxUInt16) { |
| return OperandScale::kDouble; |
| } else { |
| return OperandScale::kQuadruple; |
| } |
| } |
| |
| // Return the operand size required to hold an unsigned operand with |value|. |
| static OperandSize SizeForUnsignedOperand(uint32_t value) { |
| if (value <= kMaxUInt8) { |
| return OperandSize::kByte; |
| } else if (value <= kMaxUInt16) { |
| return OperandSize::kShort; |
| } else { |
| return OperandSize::kQuad; |
| } |
| } |
| |
| static Address bytecode_size_table_address() { |
| return reinterpret_cast<Address>( |
| const_cast<uint8_t*>(&kBytecodeSizes[0][0])); |
| } |
| |
| private: |
| static const OperandType* const kOperandTypes[]; |
| static const OperandTypeInfo* const kOperandTypeInfos[]; |
| static const int kOperandCount[]; |
| static const int kNumberOfRegisterOperands[]; |
| static const ImplicitRegisterUse kImplicitRegisterUse[]; |
| static const bool kIsScalable[]; |
| static const uint8_t kBytecodeSizes[3][kBytecodeCount]; |
| static const OperandSize* const kOperandSizes[3][kBytecodeCount]; |
| static const int* const kOperandOffsets[3][kBytecodeCount]; |
| static OperandSize const |
| kOperandKindSizes[3][BytecodeOperands::kOperandTypeCount]; |
| }; |
| |
| V8_EXPORT_PRIVATE std::ostream& operator<<(std::ostream& os, |
| const Bytecode& bytecode); |
| |
| } // namespace interpreter |
| } // namespace internal |
| } // namespace v8 |
| |
| #endif // V8_INTERPRETER_BYTECODES_H_ |
