Rename A64 port to ARM64 port

src/a64/lithium-codegen-a64.h

Index: src/a64/lithium-codegen-a64.h
diff --git a/src/a64/lithium-codegen-a64.h b/src/a64/lithium-codegen-a64.h
deleted file mode 100644
index c58ca13ed6d4fd0ab2af6293a94001cae50b4dc9..0000000000000000000000000000000000000000
--- a/src/a64/lithium-codegen-a64.h
+++ /dev/null
@@ -1,476 +0,0 @@
-// Copyright 2013 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:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#ifndef V8_A64_LITHIUM_CODEGEN_A64_H_
-#define V8_A64_LITHIUM_CODEGEN_A64_H_
-
-#include "a64/lithium-a64.h"
-
-#include "a64/lithium-gap-resolver-a64.h"
-#include "deoptimizer.h"
-#include "lithium-codegen.h"
-#include "safepoint-table.h"
-#include "scopes.h"
-#include "v8utils.h"
-
-namespace v8 {
-namespace internal {
-
-// Forward declarations.
-class LDeferredCode;
-class SafepointGenerator;
-class BranchGenerator;
-
-class LCodeGen: public LCodeGenBase {
- public:
-  LCodeGen(LChunk* chunk, MacroAssembler* assembler, CompilationInfo* info)
-      : LCodeGenBase(chunk, assembler, info),
-        deoptimizations_(4, info->zone()),
-        deopt_jump_table_(4, info->zone()),
-        deoptimization_literals_(8, info->zone()),
-        inlined_function_count_(0),
-        scope_(info->scope()),
-        translations_(info->zone()),
-        deferred_(8, info->zone()),
-        osr_pc_offset_(-1),
-        frame_is_built_(false),
-        safepoints_(info->zone()),
-        resolver_(this),
-        expected_safepoint_kind_(Safepoint::kSimple) {
-    PopulateDeoptimizationLiteralsWithInlinedFunctions();
-  }
-
-  // Simple accessors.
-  Scope* scope() const { return scope_; }
-
-  int LookupDestination(int block_id) const {
-    return chunk()->LookupDestination(block_id);
-  }
-
-  bool IsNextEmittedBlock(int block_id) const {
-    return LookupDestination(block_id) == GetNextEmittedBlock();
-  }
-
-  bool NeedsEagerFrame() const {
-    return GetStackSlotCount() > 0 ||
-        info()->is_non_deferred_calling() ||
-        !info()->IsStub() ||
-        info()->requires_frame();
-  }
-  bool NeedsDeferredFrame() const {
-    return !NeedsEagerFrame() && info()->is_deferred_calling();
-  }
-
-  LinkRegisterStatus GetLinkRegisterState() const {
-    return frame_is_built_ ? kLRHasBeenSaved : kLRHasNotBeenSaved;
-  }
-
-  // Try to generate code for the entire chunk, but it may fail if the
-  // chunk contains constructs we cannot handle. Returns true if the
-  // code generation attempt succeeded.
-  bool GenerateCode();
-
-  // Finish the code by setting stack height, safepoint, and bailout
-  // information on it.
-  void FinishCode(Handle<Code> code);
-
-  // Support for converting LOperands to assembler types.
-  // LOperand must be a register.
-  Register ToRegister(LOperand* op) const;
-  Register ToRegister32(LOperand* op) const;
-  Operand ToOperand(LOperand* op);
-  Operand ToOperand32I(LOperand* op);
-  Operand ToOperand32U(LOperand* op);
-  MemOperand ToMemOperand(LOperand* op) const;
-  Handle<Object> ToHandle(LConstantOperand* op) const;
-
-  // TODO(jbramley): Examine these helpers and check that they make sense.
-  // IsInteger32Constant returns true for smi constants, for example.
-  bool IsInteger32Constant(LConstantOperand* op) const;
-  bool IsSmi(LConstantOperand* op) const;
-
-  int32_t ToInteger32(LConstantOperand* op) const;
-  Smi* ToSmi(LConstantOperand* op) const;
-  double ToDouble(LConstantOperand* op) const;
-  DoubleRegister ToDoubleRegister(LOperand* op) const;
-
-  // Declare methods that deal with the individual node types.
-#define DECLARE_DO(type) void Do##type(L##type* node);
-  LITHIUM_CONCRETE_INSTRUCTION_LIST(DECLARE_DO)
-#undef DECLARE_DO
-
- private:
-  // Return a double scratch register which can be used locally
-  // when generating code for a lithium instruction.
-  DoubleRegister double_scratch() { return crankshaft_fp_scratch; }
-
-  // Deferred code support.
-  void DoDeferredNumberTagD(LNumberTagD* instr);
-  void DoDeferredStackCheck(LStackCheck* instr);
-  void DoDeferredStringCharCodeAt(LStringCharCodeAt* instr);
-  void DoDeferredStringCharFromCode(LStringCharFromCode* instr);
-  void DoDeferredMathAbsTagged(LMathAbsTagged* instr,
-                               Label* exit,
-                               Label* allocation_entry);
-
-  enum IntegerSignedness { SIGNED_INT32, UNSIGNED_INT32 };
-  void DoDeferredNumberTagU(LInstruction* instr,
-                            LOperand* value,
-                            LOperand* temp1,
-                            LOperand* temp2);
-  void DoDeferredTaggedToI(LTaggedToI* instr,
-                           LOperand* value,
-                           LOperand* temp1,
-                           LOperand* temp2);
-  void DoDeferredAllocate(LAllocate* instr);
-  void DoDeferredInstanceOfKnownGlobal(LInstanceOfKnownGlobal* instr);
-  void DoDeferredInstanceMigration(LCheckMaps* instr, Register object);
-
-  Operand ToOperand32(LOperand* op, IntegerSignedness signedness);
-
-  static Condition TokenToCondition(Token::Value op, bool is_unsigned);
-  void EmitGoto(int block);
-  void DoGap(LGap* instr);
-
-  // Generic version of EmitBranch. It contains some code to avoid emitting a
-  // branch on the next emitted basic block where we could just fall-through.
-  // You shouldn't use that directly but rather consider one of the helper like
-  // LCodeGen::EmitBranch, LCodeGen::EmitCompareAndBranch...
-  template<class InstrType>
-  void EmitBranchGeneric(InstrType instr,
-                         const BranchGenerator& branch);
-
-  template<class InstrType>
-  void EmitBranch(InstrType instr, Condition condition);
-
-  template<class InstrType>
-  void EmitCompareAndBranch(InstrType instr,
-                            Condition condition,
-                            const Register& lhs,
-                            const Operand& rhs);
-
-  template<class InstrType>
-  void EmitTestAndBranch(InstrType instr,
-                         Condition condition,
-                         const Register& value,
-                         uint64_t mask);
-
-  template<class InstrType>
-  void EmitBranchIfNonZeroNumber(InstrType instr,
-                                 const FPRegister& value,
-                                 const FPRegister& scratch);
-
-  template<class InstrType>
-  void EmitBranchIfHeapNumber(InstrType instr,
-                              const Register& value);
-
-  template<class InstrType>
-  void EmitBranchIfRoot(InstrType instr,
-                        const Register& value,
-                        Heap::RootListIndex index);
-
-  // Emits optimized code to deep-copy the contents of statically known object
-  // graphs (e.g. object literal boilerplate). Expects a pointer to the
-  // allocated destination object in the result register, and a pointer to the
-  // source object in the source register.
-  void EmitDeepCopy(Handle<JSObject> object,
-                    Register result,
-                    Register source,
-                    Register scratch,
-                    int* offset,
-                    AllocationSiteMode mode);
-
-  // Emits optimized code for %_IsString(x).  Preserves input register.
-  // Returns the condition on which a final split to
-  // true and false label should be made, to optimize fallthrough.
-  Condition EmitIsString(Register input, Register temp1, Label* is_not_string,
-                         SmiCheck check_needed);
-
-  int DefineDeoptimizationLiteral(Handle<Object> literal);
-  void PopulateDeoptimizationData(Handle<Code> code);
-  void PopulateDeoptimizationLiteralsWithInlinedFunctions();
-
-  MemOperand BuildSeqStringOperand(Register string,
-                                   Register temp,
-                                   LOperand* index,
-                                   String::Encoding encoding);
-  void DeoptimizeBranch(
-      LEnvironment* environment,
-      BranchType branch_type, Register reg = NoReg, int bit = -1,
-      Deoptimizer::BailoutType* override_bailout_type = NULL);
-  void Deoptimize(LEnvironment* environment,
-                  Deoptimizer::BailoutType* override_bailout_type = NULL);
-  void DeoptimizeIf(Condition cc, LEnvironment* environment);
-  void DeoptimizeIfZero(Register rt, LEnvironment* environment);
-  void DeoptimizeIfNotZero(Register rt, LEnvironment* environment);
-  void DeoptimizeIfNegative(Register rt, LEnvironment* environment);
-  void DeoptimizeIfSmi(Register rt, LEnvironment* environment);
-  void DeoptimizeIfNotSmi(Register rt, LEnvironment* environment);
-  void DeoptimizeIfRoot(Register rt,
-                        Heap::RootListIndex index,
-                        LEnvironment* environment);
-  void DeoptimizeIfNotRoot(Register rt,
-                           Heap::RootListIndex index,
-                           LEnvironment* environment);
-  void DeoptimizeIfMinusZero(DoubleRegister input, LEnvironment* environment);
-  void ApplyCheckIf(Condition cc, LBoundsCheck* check);
-
-  MemOperand PrepareKeyedExternalArrayOperand(Register key,
-                                              Register base,
-                                              Register scratch,
-                                              bool key_is_smi,
-                                              bool key_is_constant,
-                                              int constant_key,
-                                              ElementsKind elements_kind,
-                                              int additional_index);
-  void CalcKeyedArrayBaseRegister(Register base,
-                                  Register elements,
-                                  Register key,
-                                  bool key_is_tagged,
-                                  ElementsKind elements_kind);
-
-  void RegisterEnvironmentForDeoptimization(LEnvironment* environment,
-                                            Safepoint::DeoptMode mode);
-
-  int GetStackSlotCount() const { return chunk()->spill_slot_count(); }
-
-  void Abort(BailoutReason reason);
-
-  void AddDeferredCode(LDeferredCode* code) { deferred_.Add(code, zone()); }
-
-  // Emit frame translation commands for an environment.
-  void WriteTranslation(LEnvironment* environment, Translation* translation);
-
-  void AddToTranslation(LEnvironment* environment,
-                        Translation* translation,
-                        LOperand* op,
-                        bool is_tagged,
-                        bool is_uint32,
-                        int* object_index_pointer,
-                        int* dematerialized_index_pointer);
-
-  void SaveCallerDoubles();
-  void RestoreCallerDoubles();
-
-  // Code generation steps.  Returns true if code generation should continue.
-  void GenerateBodyInstructionPre(LInstruction* instr) V8_OVERRIDE;
-  bool GeneratePrologue();
-  bool GenerateDeferredCode();
-  bool GenerateDeoptJumpTable();
-  bool GenerateSafepointTable();
-
-  // Generates the custom OSR entrypoint and sets the osr_pc_offset.
-  void GenerateOsrPrologue();
-
-  enum SafepointMode {
-    RECORD_SIMPLE_SAFEPOINT,
-    RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS
-  };
-
-  void CallCode(Handle<Code> code,
-                RelocInfo::Mode mode,
-                LInstruction* instr);
-
-  void CallCodeGeneric(Handle<Code> code,
-                       RelocInfo::Mode mode,
-                       LInstruction* instr,
-                       SafepointMode safepoint_mode);
-
-  void CallRuntime(const Runtime::Function* function,
-                   int num_arguments,
-                   LInstruction* instr,
-                   SaveFPRegsMode save_doubles = kDontSaveFPRegs);
-
-  void CallRuntime(Runtime::FunctionId id,
-                   int num_arguments,
-                   LInstruction* instr) {
-    const Runtime::Function* function = Runtime::FunctionForId(id);
-    CallRuntime(function, num_arguments, instr);
-  }
-
-  void LoadContextFromDeferred(LOperand* context);
-  void CallRuntimeFromDeferred(Runtime::FunctionId id,
-                               int argc,
-                               LInstruction* instr,
-                               LOperand* context);
-
-  // Generate a direct call to a known function.
-  // If the function is already loaded into x1 by the caller, function_reg may
-  // be set to x1. Otherwise, it must be NoReg, and CallKnownFunction will
-  // automatically load it.
-  void CallKnownFunction(Handle<JSFunction> function,
-                         int formal_parameter_count,
-                         int arity,
-                         LInstruction* instr,
-                         Register function_reg = NoReg);
-
-  // Support for recording safepoint and position information.
-  void RecordAndWritePosition(int position) V8_OVERRIDE;
-  void RecordSafepoint(LPointerMap* pointers,
-                       Safepoint::Kind kind,
-                       int arguments,
-                       Safepoint::DeoptMode mode);
-  void RecordSafepoint(LPointerMap* pointers, Safepoint::DeoptMode mode);
-  void RecordSafepoint(Safepoint::DeoptMode mode);
-  void RecordSafepointWithRegisters(LPointerMap* pointers,
-                                    int arguments,
-                                    Safepoint::DeoptMode mode);
-  void RecordSafepointWithRegistersAndDoubles(LPointerMap* pointers,
-                                              int arguments,
-                                              Safepoint::DeoptMode mode);
-  void RecordSafepointWithLazyDeopt(LInstruction* instr,
-                                    SafepointMode safepoint_mode);
-
-  void EnsureSpaceForLazyDeopt(int space_needed) V8_OVERRIDE;
-
-  ZoneList<LEnvironment*> deoptimizations_;
-  ZoneList<Deoptimizer::JumpTableEntry*> deopt_jump_table_;
-  ZoneList<Handle<Object> > deoptimization_literals_;
-  int inlined_function_count_;
-  Scope* const scope_;
-  TranslationBuffer translations_;
-  ZoneList<LDeferredCode*> deferred_;
-  int osr_pc_offset_;
-  bool frame_is_built_;
-
-  // Builder that keeps track of safepoints in the code. The table itself is
-  // emitted at the end of the generated code.
-  SafepointTableBuilder safepoints_;
-
-  // Compiler from a set of parallel moves to a sequential list of moves.
-  LGapResolver resolver_;
-
-  Safepoint::Kind expected_safepoint_kind_;
-
-  int old_position_;
-
-  class PushSafepointRegistersScope BASE_EMBEDDED {
-   public:
-    PushSafepointRegistersScope(LCodeGen* codegen,
-                                Safepoint::Kind kind)
-        : codegen_(codegen) {
-      ASSERT(codegen_->info()->is_calling());
-      ASSERT(codegen_->expected_safepoint_kind_ == Safepoint::kSimple);
-      codegen_->expected_safepoint_kind_ = kind;
-
-      switch (codegen_->expected_safepoint_kind_) {
-        case Safepoint::kWithRegisters:
-          codegen_->masm_->PushSafepointRegisters();
-          break;
-        case Safepoint::kWithRegistersAndDoubles:
-          codegen_->masm_->PushSafepointRegisters();
-          codegen_->masm_->PushSafepointFPRegisters();
-          break;
-        default:
-          UNREACHABLE();
-      }
-    }
-
-    ~PushSafepointRegistersScope() {
-      Safepoint::Kind kind = codegen_->expected_safepoint_kind_;
-      ASSERT((kind & Safepoint::kWithRegisters) != 0);
-      switch (kind) {
-        case Safepoint::kWithRegisters:
-          codegen_->masm_->PopSafepointRegisters();
-          break;
-        case Safepoint::kWithRegistersAndDoubles:
-          codegen_->masm_->PopSafepointFPRegisters();
-          codegen_->masm_->PopSafepointRegisters();
-          break;
-        default:
-          UNREACHABLE();
-      }
-      codegen_->expected_safepoint_kind_ = Safepoint::kSimple;
-    }
-
-   private:
-    LCodeGen* codegen_;
-  };
-
-  friend class LDeferredCode;
-  friend class SafepointGenerator;
-  DISALLOW_COPY_AND_ASSIGN(LCodeGen);
-};
-
-
-class LDeferredCode: public ZoneObject {
- public:
-  explicit LDeferredCode(LCodeGen* codegen)
-      : codegen_(codegen),
-        external_exit_(NULL),
-        instruction_index_(codegen->current_instruction_) {
-    codegen->AddDeferredCode(this);
-  }
-
-  virtual ~LDeferredCode() { }
-  virtual void Generate() = 0;
-  virtual LInstruction* instr() = 0;
-
-  void SetExit(Label* exit) { external_exit_ = exit; }
-  Label* entry() { return &entry_; }
-  Label* exit() { return (external_exit_ != NULL) ? external_exit_ : &exit_; }
-  int instruction_index() const { return instruction_index_; }
-
- protected:
-  LCodeGen* codegen() const { return codegen_; }
-  MacroAssembler* masm() const { return codegen_->masm(); }
-
- private:
-  LCodeGen* codegen_;
-  Label entry_;
-  Label exit_;
-  Label* external_exit_;
-  int instruction_index_;
-};
-
-
-// This is the abstract class used by EmitBranchGeneric.
-// It is used to emit code for conditional branching. The Emit() function
-// emits code to branch when the condition holds and EmitInverted() emits
-// the branch when the inverted condition is verified.
-//
-// For actual examples of condition see the concrete implementation in
-// lithium-codegen-a64.cc (e.g. BranchOnCondition, CompareAndBranch).
-class BranchGenerator BASE_EMBEDDED {
- public:
-  explicit BranchGenerator(LCodeGen* codegen)
-    : codegen_(codegen) { }
-
-  virtual ~BranchGenerator() { }
-
-  virtual void Emit(Label* label) const = 0;
-  virtual void EmitInverted(Label* label) const = 0;
-
- protected:
-  MacroAssembler* masm() const { return codegen_->masm(); }
-
-  LCodeGen* codegen_;
-};
-
-} }  // namespace v8::internal
-
-#endif  // V8_A64_LITHIUM_CODEGEN_A64_H_