More simplification and unification of frame handling

src/crankshaft/mips/lithium-codegen-mips.h

 // Copyright 2012 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_CRANKSHAFT_MIPS_LITHIUM_CODEGEN_MIPS_H_
 #define V8_CRANKSHAFT_MIPS_LITHIUM_CODEGEN_MIPS_H_
 
 #include "src/ast/scopes.h"
 #include "src/crankshaft/lithium-codegen.h"
 #include "src/crankshaft/mips/lithium-gap-resolver-mips.h"
@@ skipping 26 matching lines @@
 
   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();
+    return HasAllocatedStackSlots() || info()->is_non_deferred_calling() ||
+           !info()->IsStub() || info()->requires_frame();
   }
   bool NeedsDeferredFrame() const {
     return !NeedsEagerFrame() && info()->is_deferred_calling();
   }
 
   RAStatus GetRAState() const {
     return frame_is_built_ ? kRAHasBeenSaved : kRAHasNotBeenSaved;
   }
 
   // Support for converting LOperands to assembler types.
@@ skipping 85 matching lines @@
 
   LInstruction* GetNextInstruction();
 
   void EmitClassOfTest(Label* if_true,
                        Label* if_false,
                        Handle<String> class_name,
                        Register input,
                        Register temporary,
                        Register temporary2);
 
-  int GetStackSlotCount() const { return chunk()->spill_slot_count(); }
+  bool HasAllocatedStackSlots() const {
+    return chunk()->HasAllocatedStackSlots();
+  }
+  int GetStackSlotCount() const { return chunk()->GetSpillSlotCount(); }
+  int GetTotalFrameSlotCount() const {
+    return chunk()->GetTotalFrameSlotCount();
+  }
 
   void AddDeferredCode(LDeferredCode* code) { deferred_.Add(code, zone()); }
 
   void SaveCallerDoubles();
   void RestoreCallerDoubles();
 
   // Code generation passes.  Returns true if code generation should
   // continue.
   void GenerateBodyInstructionPre(LInstruction* instr) override;
   bool GeneratePrologue();
@@ skipping 246 matching lines @@
   Label entry_;
   Label exit_;
   Label* external_exit_;
   int instruction_index_;
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CRANKSHAFT_MIPS_LITHIUM_CODEGEN_MIPS_H_