Merge V8 at r7668: Initial merge by Git.
Change-Id: I1703c8b4f5c63052451a22cf3fb878abc9a0ec75
diff --git a/src/ia32/codegen-ia32.h b/src/ia32/codegen-ia32.h
index acd651b..8f090b1 100644
--- a/src/ia32/codegen-ia32.h
+++ b/src/ia32/codegen-ia32.h
@@ -1,4 +1,4 @@
-// Copyright 2010 the V8 project authors. All rights reserved.
+// Copyright 2011 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
@@ -30,275 +30,18 @@
#include "ast.h"
#include "ic-inl.h"
-#include "jump-target-heavy.h"
namespace v8 {
namespace internal {
// Forward declarations
class CompilationInfo;
-class DeferredCode;
-class FrameRegisterState;
-class RegisterAllocator;
-class RegisterFile;
-class RuntimeCallHelper;
-
-
-// -------------------------------------------------------------------------
-// Reference support
-
-// A reference is a C++ stack-allocated object that puts a
-// reference on the virtual frame. The reference may be consumed
-// by GetValue, TakeValue and SetValue.
-// When the lifetime (scope) of a valid reference ends, it must have
-// been consumed, and be in state UNLOADED.
-class Reference BASE_EMBEDDED {
- public:
- // The values of the types is important, see size().
- enum Type { UNLOADED = -2, ILLEGAL = -1, SLOT = 0, NAMED = 1, KEYED = 2 };
- Reference(CodeGenerator* cgen,
- Expression* expression,
- bool persist_after_get = false);
- ~Reference();
-
- Expression* expression() const { return expression_; }
- Type type() const { return type_; }
- void set_type(Type value) {
- ASSERT_EQ(ILLEGAL, type_);
- type_ = value;
- }
-
- void set_unloaded() {
- ASSERT_NE(ILLEGAL, type_);
- ASSERT_NE(UNLOADED, type_);
- type_ = UNLOADED;
- }
- // The size the reference takes up on the stack.
- int size() const {
- return (type_ < SLOT) ? 0 : type_;
- }
-
- bool is_illegal() const { return type_ == ILLEGAL; }
- bool is_slot() const { return type_ == SLOT; }
- bool is_property() const { return type_ == NAMED || type_ == KEYED; }
- bool is_unloaded() const { return type_ == UNLOADED; }
-
- // Return the name. Only valid for named property references.
- Handle<String> GetName();
-
- // Generate code to push the value of the reference on top of the
- // expression stack. The reference is expected to be already on top of
- // the expression stack, and it is consumed by the call unless the
- // reference is for a compound assignment.
- // If the reference is not consumed, it is left in place under its value.
- void GetValue();
-
- // Like GetValue except that the slot is expected to be written to before
- // being read from again. The value of the reference may be invalidated,
- // causing subsequent attempts to read it to fail.
- void TakeValue();
-
- // Generate code to store the value on top of the expression stack in the
- // reference. The reference is expected to be immediately below the value
- // on the expression stack. The value is stored in the location specified
- // by the reference, and is left on top of the stack, after the reference
- // is popped from beneath it (unloaded).
- void SetValue(InitState init_state);
-
- private:
- CodeGenerator* cgen_;
- Expression* expression_;
- Type type_;
- // Keep the reference on the stack after get, so it can be used by set later.
- bool persist_after_get_;
-};
-
-
-// -------------------------------------------------------------------------
-// Control destinations.
-
-// A control destination encapsulates a pair of jump targets and a
-// flag indicating which one is the preferred fall-through. The
-// preferred fall-through must be unbound, the other may be already
-// bound (ie, a backward target).
-//
-// The true and false targets may be jumped to unconditionally or
-// control may split conditionally. Unconditional jumping and
-// splitting should be emitted in tail position (as the last thing
-// when compiling an expression) because they can cause either label
-// to be bound or the non-fall through to be jumped to leaving an
-// invalid virtual frame.
-//
-// The labels in the control destination can be extracted and
-// manipulated normally without affecting the state of the
-// destination.
-
-class ControlDestination BASE_EMBEDDED {
- public:
- ControlDestination(JumpTarget* true_target,
- JumpTarget* false_target,
- bool true_is_fall_through)
- : true_target_(true_target),
- false_target_(false_target),
- true_is_fall_through_(true_is_fall_through),
- is_used_(false) {
- ASSERT(true_is_fall_through ? !true_target->is_bound()
- : !false_target->is_bound());
- }
-
- // Accessors for the jump targets. Directly jumping or branching to
- // or binding the targets will not update the destination's state.
- JumpTarget* true_target() const { return true_target_; }
- JumpTarget* false_target() const { return false_target_; }
-
- // True if the the destination has been jumped to unconditionally or
- // control has been split to both targets. This predicate does not
- // test whether the targets have been extracted and manipulated as
- // raw jump targets.
- bool is_used() const { return is_used_; }
-
- // True if the destination is used and the true target (respectively
- // false target) was the fall through. If the target is backward,
- // "fall through" included jumping unconditionally to it.
- bool true_was_fall_through() const {
- return is_used_ && true_is_fall_through_;
- }
-
- bool false_was_fall_through() const {
- return is_used_ && !true_is_fall_through_;
- }
-
- // Emit a branch to one of the true or false targets, and bind the
- // other target. Because this binds the fall-through target, it
- // should be emitted in tail position (as the last thing when
- // compiling an expression).
- void Split(Condition cc) {
- ASSERT(!is_used_);
- if (true_is_fall_through_) {
- false_target_->Branch(NegateCondition(cc));
- true_target_->Bind();
- } else {
- true_target_->Branch(cc);
- false_target_->Bind();
- }
- is_used_ = true;
- }
-
- // Emit an unconditional jump in tail position, to the true target
- // (if the argument is true) or the false target. The "jump" will
- // actually bind the jump target if it is forward, jump to it if it
- // is backward.
- void Goto(bool where) {
- ASSERT(!is_used_);
- JumpTarget* target = where ? true_target_ : false_target_;
- if (target->is_bound()) {
- target->Jump();
- } else {
- target->Bind();
- }
- is_used_ = true;
- true_is_fall_through_ = where;
- }
-
- // Mark this jump target as used as if Goto had been called, but
- // without generating a jump or binding a label (the control effect
- // should have already happened). This is used when the left
- // subexpression of the short-circuit boolean operators are
- // compiled.
- void Use(bool where) {
- ASSERT(!is_used_);
- ASSERT((where ? true_target_ : false_target_)->is_bound());
- is_used_ = true;
- true_is_fall_through_ = where;
- }
-
- // Swap the true and false targets but keep the same actual label as
- // the fall through. This is used when compiling negated
- // expressions, where we want to swap the targets but preserve the
- // state.
- void Invert() {
- JumpTarget* temp_target = true_target_;
- true_target_ = false_target_;
- false_target_ = temp_target;
-
- true_is_fall_through_ = !true_is_fall_through_;
- }
-
- private:
- // True and false jump targets.
- JumpTarget* true_target_;
- JumpTarget* false_target_;
-
- // Before using the destination: true if the true target is the
- // preferred fall through, false if the false target is. After
- // using the destination: true if the true target was actually used
- // as the fall through, false if the false target was.
- bool true_is_fall_through_;
-
- // True if the Split or Goto functions have been called.
- bool is_used_;
-};
-
-
-// -------------------------------------------------------------------------
-// Code generation state
-
-// The state is passed down the AST by the code generator (and back up, in
-// the form of the state of the jump target pair). It is threaded through
-// the call stack. Constructing a state implicitly pushes it on the owning
-// code generator's stack of states, and destroying one implicitly pops it.
-//
-// The code generator state is only used for expressions, so statements have
-// the initial state.
-
-class CodeGenState BASE_EMBEDDED {
- public:
- // Create an initial code generator state. Destroying the initial state
- // leaves the code generator with a NULL state.
- explicit CodeGenState(CodeGenerator* owner);
-
- // Create a code generator state based on a code generator's current
- // state. The new state has its own control destination.
- CodeGenState(CodeGenerator* owner, ControlDestination* destination);
-
- // Destroy a code generator state and restore the owning code generator's
- // previous state.
- ~CodeGenState();
-
- // Accessors for the state.
- ControlDestination* destination() const { return destination_; }
-
- private:
- // The owning code generator.
- CodeGenerator* owner_;
-
- // A control destination in case the expression has a control-flow
- // effect.
- ControlDestination* destination_;
-
- // The previous state of the owning code generator, restored when
- // this state is destroyed.
- CodeGenState* previous_;
-};
-
-
-// -------------------------------------------------------------------------
-// Arguments allocation mode.
-
-enum ArgumentsAllocationMode {
- NO_ARGUMENTS_ALLOCATION,
- EAGER_ARGUMENTS_ALLOCATION,
- LAZY_ARGUMENTS_ALLOCATION
-};
-
// -------------------------------------------------------------------------
// CodeGenerator
-class CodeGenerator: public AstVisitor {
+class CodeGenerator {
public:
- static bool MakeCode(CompilationInfo* info);
-
// Printing of AST, etc. as requested by flags.
static void MakeCodePrologue(CompilationInfo* info);
@@ -318,33 +61,7 @@
int pos,
bool right_here = false);
- // Accessors
- MacroAssembler* masm() { return masm_; }
- VirtualFrame* frame() const { return frame_; }
- inline Handle<Script> script();
- bool has_valid_frame() const { return frame_ != NULL; }
-
- // Set the virtual frame to be new_frame, with non-frame register
- // reference counts given by non_frame_registers. The non-frame
- // register reference counts of the old frame are returned in
- // non_frame_registers.
- void SetFrame(VirtualFrame* new_frame, RegisterFile* non_frame_registers);
-
- void DeleteFrame();
-
- RegisterAllocator* allocator() const { return allocator_; }
-
- CodeGenState* state() { return state_; }
- void set_state(CodeGenState* state) { state_ = state; }
-
- void AddDeferred(DeferredCode* code) { deferred_.Add(code); }
-
- bool in_spilled_code() const { return in_spilled_code_; }
- void set_in_spilled_code(bool flag) { in_spilled_code_ = flag; }
-
- // Return a position of the element at |index_as_smi| + |additional_offset|
- // in FixedArray pointer to which is held in |array|. |index_as_smi| is Smi.
static Operand FixedArrayElementOperand(Register array,
Register index_as_smi,
int additional_offset = 0) {
@@ -353,445 +70,6 @@
}
private:
- // Type of a member function that generates inline code for a native function.
- typedef void (CodeGenerator::*InlineFunctionGenerator)
- (ZoneList<Expression*>*);
-
- static const InlineFunctionGenerator kInlineFunctionGenerators[];
-
- // Construction/Destruction
- explicit CodeGenerator(MacroAssembler* masm);
-
- // Accessors
- inline bool is_eval();
- inline Scope* scope();
- inline bool is_strict_mode();
- inline StrictModeFlag strict_mode_flag();
-
- // Generating deferred code.
- void ProcessDeferred();
-
- // State
- ControlDestination* destination() const { return state_->destination(); }
-
- // Control of side-effect-free int32 expression compilation.
- bool in_safe_int32_mode() { return in_safe_int32_mode_; }
- void set_in_safe_int32_mode(bool value) { in_safe_int32_mode_ = value; }
- bool safe_int32_mode_enabled() {
- return FLAG_safe_int32_compiler && safe_int32_mode_enabled_;
- }
- void set_safe_int32_mode_enabled(bool value) {
- safe_int32_mode_enabled_ = value;
- }
- void set_unsafe_bailout(BreakTarget* unsafe_bailout) {
- unsafe_bailout_ = unsafe_bailout;
- }
-
- // Take the Result that is an untagged int32, and convert it to a tagged
- // Smi or HeapNumber. Remove the untagged_int32 flag from the result.
- void ConvertInt32ResultToNumber(Result* value);
- void ConvertInt32ResultToSmi(Result* value);
-
- // Track loop nesting level.
- int loop_nesting() const { return loop_nesting_; }
- void IncrementLoopNesting() { loop_nesting_++; }
- void DecrementLoopNesting() { loop_nesting_--; }
-
- // Node visitors.
- void VisitStatements(ZoneList<Statement*>* statements);
-
- virtual void VisitSlot(Slot* node);
-#define DEF_VISIT(type) \
- virtual void Visit##type(type* node);
- AST_NODE_LIST(DEF_VISIT)
-#undef DEF_VISIT
-
- // Visit a statement and then spill the virtual frame if control flow can
- // reach the end of the statement (ie, it does not exit via break,
- // continue, return, or throw). This function is used temporarily while
- // the code generator is being transformed.
- void VisitAndSpill(Statement* statement);
-
- // Visit a list of statements and then spill the virtual frame if control
- // flow can reach the end of the list.
- void VisitStatementsAndSpill(ZoneList<Statement*>* statements);
-
- // Main code generation function
- void Generate(CompilationInfo* info);
-
- // Generate the return sequence code. Should be called no more than
- // once per compiled function, immediately after binding the return
- // target (which can not be done more than once).
- void GenerateReturnSequence(Result* return_value);
-
- // Returns the arguments allocation mode.
- ArgumentsAllocationMode ArgumentsMode();
-
- // Store the arguments object and allocate it if necessary.
- Result StoreArgumentsObject(bool initial);
-
- // The following are used by class Reference.
- void LoadReference(Reference* ref);
-
- Operand SlotOperand(Slot* slot, Register tmp);
-
- Operand ContextSlotOperandCheckExtensions(Slot* slot,
- Result tmp,
- JumpTarget* slow);
-
- // Expressions
- void LoadCondition(Expression* expr,
- ControlDestination* destination,
- bool force_control);
- void Load(Expression* expr);
- void LoadGlobal();
- void LoadGlobalReceiver();
-
- // Generate code to push the value of an expression on top of the frame
- // and then spill the frame fully to memory. This function is used
- // temporarily while the code generator is being transformed.
- void LoadAndSpill(Expression* expression);
-
- // Evaluate an expression and place its value on top of the frame,
- // using, or not using, the side-effect-free expression compiler.
- void LoadInSafeInt32Mode(Expression* expr, BreakTarget* unsafe_bailout);
- void LoadWithSafeInt32ModeDisabled(Expression* expr);
-
- // Read a value from a slot and leave it on top of the expression stack.
- void LoadFromSlot(Slot* slot, TypeofState typeof_state);
- void LoadFromSlotCheckForArguments(Slot* slot, TypeofState typeof_state);
- Result LoadFromGlobalSlotCheckExtensions(Slot* slot,
- TypeofState typeof_state,
- JumpTarget* slow);
-
- // Support for loading from local/global variables and arguments
- // whose location is known unless they are shadowed by
- // eval-introduced bindings. Generates no code for unsupported slot
- // types and therefore expects to fall through to the slow jump target.
- void EmitDynamicLoadFromSlotFastCase(Slot* slot,
- TypeofState typeof_state,
- Result* result,
- JumpTarget* slow,
- JumpTarget* done);
-
- // Store the value on top of the expression stack into a slot, leaving the
- // value in place.
- void StoreToSlot(Slot* slot, InitState init_state);
-
- // Support for compiling assignment expressions.
- void EmitSlotAssignment(Assignment* node);
- void EmitNamedPropertyAssignment(Assignment* node);
- void EmitKeyedPropertyAssignment(Assignment* node);
-
- // Receiver is passed on the frame and consumed.
- Result EmitNamedLoad(Handle<String> name, bool is_contextual);
-
- // If the store is contextual, value is passed on the frame and consumed.
- // Otherwise, receiver and value are passed on the frame and consumed.
- Result EmitNamedStore(Handle<String> name, bool is_contextual);
-
- // Receiver and key are passed on the frame and consumed.
- Result EmitKeyedLoad();
-
- // Receiver, key, and value are passed on the frame and consumed.
- Result EmitKeyedStore(StaticType* key_type);
-
- // Special code for typeof expressions: Unfortunately, we must
- // be careful when loading the expression in 'typeof'
- // expressions. We are not allowed to throw reference errors for
- // non-existing properties of the global object, so we must make it
- // look like an explicit property access, instead of an access
- // through the context chain.
- void LoadTypeofExpression(Expression* x);
-
- // Translate the value on top of the frame into control flow to the
- // control destination.
- void ToBoolean(ControlDestination* destination);
-
- // Generate code that computes a shortcutting logical operation.
- void GenerateLogicalBooleanOperation(BinaryOperation* node);
-
- void GenericBinaryOperation(BinaryOperation* expr,
- OverwriteMode overwrite_mode);
-
- // Emits code sequence that jumps to a JumpTarget if the inputs
- // are both smis. Cannot be in MacroAssembler because it takes
- // advantage of TypeInfo to skip unneeded checks.
- // Allocates a temporary register, possibly spilling from the frame,
- // if it needs to check both left and right.
- void JumpIfBothSmiUsingTypeInfo(Result* left,
- Result* right,
- JumpTarget* both_smi);
-
- // Emits code sequence that jumps to deferred code if the inputs
- // are not both smis. Cannot be in MacroAssembler because it takes
- // a deferred code object.
- void JumpIfNotBothSmiUsingTypeInfo(Register left,
- Register right,
- Register scratch,
- TypeInfo left_info,
- TypeInfo right_info,
- DeferredCode* deferred);
-
- // Emits code sequence that jumps to the label if the inputs
- // are not both smis.
- void JumpIfNotBothSmiUsingTypeInfo(Register left,
- Register right,
- Register scratch,
- TypeInfo left_info,
- TypeInfo right_info,
- Label* on_non_smi);
-
- // If possible, combine two constant smi values using op to produce
- // a smi result, and push it on the virtual frame, all at compile time.
- // Returns true if it succeeds. Otherwise it has no effect.
- bool FoldConstantSmis(Token::Value op, int left, int right);
-
- // Emit code to perform a binary operation on a constant
- // smi and a likely smi. Consumes the Result operand.
- Result ConstantSmiBinaryOperation(BinaryOperation* expr,
- Result* operand,
- Handle<Object> constant_operand,
- bool reversed,
- OverwriteMode overwrite_mode);
-
- // Emit code to perform a binary operation on two likely smis.
- // The code to handle smi arguments is produced inline.
- // Consumes the Results left and right.
- Result LikelySmiBinaryOperation(BinaryOperation* expr,
- Result* left,
- Result* right,
- OverwriteMode overwrite_mode);
-
-
- // Emit code to perform a binary operation on two untagged int32 values.
- // The values are on top of the frame, and the result is pushed on the frame.
- void Int32BinaryOperation(BinaryOperation* node);
-
-
- // Generate a stub call from the virtual frame.
- Result GenerateGenericBinaryOpStubCall(GenericBinaryOpStub* stub,
- Result* left,
- Result* right);
-
- void Comparison(AstNode* node,
- Condition cc,
- bool strict,
- ControlDestination* destination);
-
- // If at least one of the sides is a constant smi, generate optimized code.
- void ConstantSmiComparison(Condition cc,
- bool strict,
- ControlDestination* destination,
- Result* left_side,
- Result* right_side,
- bool left_side_constant_smi,
- bool right_side_constant_smi,
- bool is_loop_condition);
-
- void GenerateInlineNumberComparison(Result* left_side,
- Result* right_side,
- Condition cc,
- ControlDestination* dest);
-
- // To prevent long attacker-controlled byte sequences, integer constants
- // from the JavaScript source are loaded in two parts if they are larger
- // than 17 bits.
- static const int kMaxSmiInlinedBits = 17;
- bool IsUnsafeSmi(Handle<Object> value);
- // Load an integer constant x into a register target or into the stack using
- // at most 16 bits of user-controlled data per assembly operation.
- void MoveUnsafeSmi(Register target, Handle<Object> value);
- void StoreUnsafeSmiToLocal(int offset, Handle<Object> value);
- void PushUnsafeSmi(Handle<Object> value);
-
- void CallWithArguments(ZoneList<Expression*>* arguments,
- CallFunctionFlags flags,
- int position);
-
- // An optimized implementation of expressions of the form
- // x.apply(y, arguments). We call x the applicand and y the receiver.
- // The optimization avoids allocating an arguments object if possible.
- void CallApplyLazy(Expression* applicand,
- Expression* receiver,
- VariableProxy* arguments,
- int position);
-
- void CheckStack();
-
- bool CheckForInlineRuntimeCall(CallRuntime* node);
-
- void ProcessDeclarations(ZoneList<Declaration*>* declarations);
-
- // Declare global variables and functions in the given array of
- // name/value pairs.
- void DeclareGlobals(Handle<FixedArray> pairs);
-
- // Instantiate the function based on the shared function info.
- Result InstantiateFunction(Handle<SharedFunctionInfo> function_info,
- bool pretenure);
-
- // Support for types.
- void GenerateIsSmi(ZoneList<Expression*>* args);
- void GenerateIsNonNegativeSmi(ZoneList<Expression*>* args);
- void GenerateIsArray(ZoneList<Expression*>* args);
- void GenerateIsRegExp(ZoneList<Expression*>* args);
- void GenerateIsObject(ZoneList<Expression*>* args);
- void GenerateIsSpecObject(ZoneList<Expression*>* args);
- void GenerateIsFunction(ZoneList<Expression*>* args);
- void GenerateIsUndetectableObject(ZoneList<Expression*>* args);
- void GenerateIsStringWrapperSafeForDefaultValueOf(
- ZoneList<Expression*>* args);
-
- // Support for construct call checks.
- void GenerateIsConstructCall(ZoneList<Expression*>* args);
-
- // Support for arguments.length and arguments[?].
- void GenerateArgumentsLength(ZoneList<Expression*>* args);
- void GenerateArguments(ZoneList<Expression*>* args);
-
- // Support for accessing the class and value fields of an object.
- void GenerateClassOf(ZoneList<Expression*>* args);
- void GenerateValueOf(ZoneList<Expression*>* args);
- void GenerateSetValueOf(ZoneList<Expression*>* args);
-
- // Fast support for charCodeAt(n).
- void GenerateStringCharCodeAt(ZoneList<Expression*>* args);
-
- // Fast support for string.charAt(n) and string[n].
- void GenerateStringCharFromCode(ZoneList<Expression*>* args);
-
- // Fast support for string.charAt(n) and string[n].
- void GenerateStringCharAt(ZoneList<Expression*>* args);
-
- // Fast support for object equality testing.
- void GenerateObjectEquals(ZoneList<Expression*>* args);
-
- void GenerateLog(ZoneList<Expression*>* args);
-
- void GenerateGetFramePointer(ZoneList<Expression*>* args);
-
- // Fast support for Math.random().
- void GenerateRandomHeapNumber(ZoneList<Expression*>* args);
-
- // Fast support for StringAdd.
- void GenerateStringAdd(ZoneList<Expression*>* args);
-
- // Fast support for SubString.
- void GenerateSubString(ZoneList<Expression*>* args);
-
- // Fast support for StringCompare.
- void GenerateStringCompare(ZoneList<Expression*>* args);
-
- // Support for direct calls from JavaScript to native RegExp code.
- void GenerateRegExpExec(ZoneList<Expression*>* args);
-
- // Construct a RegExp exec result with two in-object properties.
- void GenerateRegExpConstructResult(ZoneList<Expression*>* args);
-
- // Support for fast native caches.
- void GenerateGetFromCache(ZoneList<Expression*>* args);
-
- // Fast support for number to string.
- void GenerateNumberToString(ZoneList<Expression*>* args);
-
- // Fast swapping of elements. Takes three expressions, the object and two
- // indices. This should only be used if the indices are known to be
- // non-negative and within bounds of the elements array at the call site.
- void GenerateSwapElements(ZoneList<Expression*>* args);
-
- // Fast call for custom callbacks.
- void GenerateCallFunction(ZoneList<Expression*>* args);
-
- // Fast call to math functions.
- void GenerateMathPow(ZoneList<Expression*>* args);
- void GenerateMathSin(ZoneList<Expression*>* args);
- void GenerateMathCos(ZoneList<Expression*>* args);
- void GenerateMathSqrt(ZoneList<Expression*>* args);
- void GenerateMathLog(ZoneList<Expression*>* args);
-
- // Check whether two RegExps are equivalent.
- void GenerateIsRegExpEquivalent(ZoneList<Expression*>* args);
-
- void GenerateHasCachedArrayIndex(ZoneList<Expression*>* args);
- void GenerateGetCachedArrayIndex(ZoneList<Expression*>* args);
- void GenerateFastAsciiArrayJoin(ZoneList<Expression*>* args);
-
- // Simple condition analysis.
- enum ConditionAnalysis {
- ALWAYS_TRUE,
- ALWAYS_FALSE,
- DONT_KNOW
- };
- ConditionAnalysis AnalyzeCondition(Expression* cond);
-
- // Methods used to indicate which source code is generated for. Source
- // positions are collected by the assembler and emitted with the relocation
- // information.
- void CodeForFunctionPosition(FunctionLiteral* fun);
- void CodeForReturnPosition(FunctionLiteral* fun);
- void CodeForStatementPosition(Statement* stmt);
- void CodeForDoWhileConditionPosition(DoWhileStatement* stmt);
- void CodeForSourcePosition(int pos);
-
- void SetTypeForStackSlot(Slot* slot, TypeInfo info);
-
-#ifdef DEBUG
- // True if the registers are valid for entry to a block. There should
- // be no frame-external references to (non-reserved) registers.
- bool HasValidEntryRegisters();
-#endif
-
- ZoneList<DeferredCode*> deferred_;
-
- // Assembler
- MacroAssembler* masm_; // to generate code
-
- CompilationInfo* info_;
-
- // Code generation state
- VirtualFrame* frame_;
- RegisterAllocator* allocator_;
- CodeGenState* state_;
- int loop_nesting_;
- bool in_safe_int32_mode_;
- bool safe_int32_mode_enabled_;
-
- // Jump targets.
- // The target of the return from the function.
- BreakTarget function_return_;
- // The target of the bailout from a side-effect-free int32 subexpression.
- BreakTarget* unsafe_bailout_;
-
- // True if the function return is shadowed (ie, jumping to the target
- // function_return_ does not jump to the true function return, but rather
- // to some unlinking code).
- bool function_return_is_shadowed_;
-
- // True when we are in code that expects the virtual frame to be fully
- // spilled. Some virtual frame function are disabled in DEBUG builds when
- // called from spilled code, because they do not leave the virtual frame
- // in a spilled state.
- bool in_spilled_code_;
-
- // A cookie that is used for JIT IMM32 Encoding. Initialized to a
- // random number when the command-line
- // FLAG_mask_constants_with_cookie is true, zero otherwise.
- int jit_cookie_;
-
- friend class VirtualFrame;
- friend class Isolate;
- friend class JumpTarget;
- friend class Reference;
- friend class Result;
- friend class FastCodeGenerator;
- friend class FullCodeGenerator;
- friend class FullCodeGenSyntaxChecker;
- friend class LCodeGen;
-
- friend class CodeGeneratorPatcher; // Used in test-log-stack-tracer.cc
- friend class InlineRuntimeFunctionsTable;
-
DISALLOW_COPY_AND_ASSIGN(CodeGenerator);
};