Thumb2 Backend: Use sp-relative offsets for stack slot operations in Crankshaft

src/arm/lithium-codegen-arm.h

 // Copyright 2012 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
@@ skipping 46 matching lines @@
         deopt_jump_table_(4, info->zone()),
         deoptimization_literals_(8, info->zone()),
         inlined_function_count_(0),
         scope_(info->scope()),
         status_(UNUSED),
         translations_(info->zone()),
         deferred_(8, info->zone()),
         osr_pc_offset_(-1),
         last_lazy_deopt_pc_(0),
         frame_is_built_(false),
+        fp_sp_delta_(-1),
         safepoints_(info->zone()),
         resolver_(this),
         expected_safepoint_kind_(Safepoint::kSimple),
         old_position_(RelocInfo::kNoPosition) {
     PopulateDeoptimizationLiteralsWithInlinedFunctions();
   }
 
 
   // Simple accessors.
   MacroAssembler* masm() const { return masm_; }
@@ skipping 148 matching lines @@
   bool GenerateBody();
   bool GenerateDeferredCode();
   bool GenerateDeoptJumpTable();
   bool GenerateSafepointTable();
 
   enum SafepointMode {
     RECORD_SIMPLE_SAFEPOINT,
     RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS
   };
 
+  void SetFpSpDelta(int argument_count);
+
+  void Push(Register src1);
+  void Push(Register src1, Register src2);
+  void Push(Register src1, Register src2, Register src3);
+  void Push(Register src1, Register src2, Register src3, Register src4);
+
+#ifdef DEBUG
+  void CheckFpSpDelta(LInstruction* instr);
+#endif  // DEBUG
+
   void CallCode(
       Handle<Code> code,
       RelocInfo::Mode mode,
+      int num_arguments,
       LInstruction* instr,
       TargetAddressStorageMode storage_mode = CAN_INLINE_TARGET_ADDRESS);
 
   void CallCodeGeneric(
       Handle<Code> code,
       RelocInfo::Mode mode,
+      int num_arguments,
       LInstruction* instr,
       SafepointMode safepoint_mode,
       TargetAddressStorageMode storage_mode = CAN_INLINE_TARGET_ADDRESS);
 
   void CallRuntime(const Runtime::Function* function,
                    int num_arguments,
                    LInstruction* instr);
 
   void CallRuntime(Runtime::FunctionId id,
                    int num_arguments,
@@ skipping 147 matching lines @@
   ZoneList<Deoptimizer::JumpTableEntry> deopt_jump_table_;
   ZoneList<Handle<Object> > deoptimization_literals_;
   int inlined_function_count_;
   Scope* const scope_;
   Status status_;
   TranslationBuffer translations_;
   ZoneList<LDeferredCode*> deferred_;
   int osr_pc_offset_;
   int last_lazy_deopt_pc_;
   bool frame_is_built_;
+  int fp_sp_delta_;
 
   // 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;
+          codegen_->fp_sp_delta_ += kNumSafepointSavedRegisters * kPointerSize;
+        break;
         case Safepoint::kWithRegistersAndDoubles:
           codegen_->masm_->PushSafepointRegistersAndDoubles();
+          codegen_->fp_sp_delta_ += kNumSafepointSavedRegisters * kPointerSize
+              + DwVfpRegister::NumAllocatableRegisters() * kDoubleSize;
           break;
         default:
           UNREACHABLE();
       }
     }
 
     ~PushSafepointRegistersScope() {
       Safepoint::Kind kind = codegen_->expected_safepoint_kind_;
       ASSERT((kind & Safepoint::kWithRegisters) != 0);
       switch (kind) {
         case Safepoint::kWithRegisters:
           codegen_->masm_->PopSafepointRegisters();
+          codegen_->fp_sp_delta_ -= kNumSafepointRegisters * kPointerSize;
           break;
         case Safepoint::kWithRegistersAndDoubles:
           codegen_->masm_->PopSafepointRegistersAndDoubles();
+          codegen_->fp_sp_delta_ -= kNumSafepointSavedRegisters * kPointerSize
+              + DwVfpRegister::NumAllocatableRegisters() * kDoubleSize;
           break;
         default:
           UNREACHABLE();
       }
       codegen_->expected_safepoint_kind_ = Safepoint::kSimple;
     }
 
    private:
     LCodeGen* codegen_;
   };
@@ skipping 31 matching lines @@
   LCodeGen* codegen_;
   Label entry_;
   Label exit_;
   Label* external_exit_;
   int instruction_index_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM_LITHIUM_CODEGEN_ARM_H_