remove most uses of Isolate::Current in arch specific files

src/code-stubs.h

Index: src/code-stubs.h
diff --git a/src/code-stubs.h b/src/code-stubs.h
index 207af47c8e8ead3ecb3a01b3f56aa5c993c8567b..81bbb52a1fe8f464e1b12c0377138b82a99f8d70 100644
--- a/src/code-stubs.h
+++ b/src/code-stubs.h
@@ -158,14 +158,14 @@ class CodeStub BASE_EMBEDDED {
   virtual ~CodeStub() {}
 
   bool CompilingCallsToThisStubIsGCSafe(Isolate* isolate) {
-    bool is_pregenerated = IsPregenerated();
+    bool is_pregenerated = IsPregenerated(isolate);
     Code* code = NULL;
     CHECK(!is_pregenerated || FindCodeInCache(&code, isolate));
     return is_pregenerated;
   }
 
   // See comment above, where Instanceof is defined.
-  virtual bool IsPregenerated() { return false; }
+  virtual bool IsPregenerated(Isolate* isolate) { return false; }
 
   static void GenerateStubsAheadOfTime(Isolate* isolate);
   static void GenerateFPStubs(Isolate* isolate);
@@ -682,7 +682,7 @@ class CreateAllocationSiteStub : public HydrogenCodeStub {
 
   virtual Handle<Code> GenerateCode(Isolate* isolate);
 
-  virtual bool IsPregenerated() { return true; }
+  virtual bool IsPregenerated(Isolate* isolate) V8_OVERRIDE { return true; }
 
   static void GenerateAheadOfTime(Isolate* isolate);
 
@@ -1305,7 +1305,7 @@ class CEntryStub : public PlatformCodeStub {
   // time, so it's OK to call it from other stubs that can't cope with GC during
   // their code generation.  On machines that always have gp registers (x64) we
   // can generate both variants ahead of time.
-  virtual bool IsPregenerated();
+  virtual bool IsPregenerated(Isolate* isolate) V8_OVERRIDE;
   static void GenerateAheadOfTime(Isolate* isolate);
 
  private:
@@ -1317,6 +1317,7 @@ class CEntryStub : public PlatformCodeStub {
                     bool always_allocate_scope);
 
   // Number of pointers/values returned.
+  Isolate* isolate_;
   const int result_size_;
   SaveFPRegsMode save_doubles_;
 
@@ -1895,7 +1896,7 @@ class ArrayConstructorStubBase : public HydrogenCodeStub {
     return ContextCheckModeBits::decode(bit_field_);
   }
 
-  virtual bool IsPregenerated() {
+  virtual bool IsPregenerated(Isolate* isolate) V8_OVERRIDE {
     // We only pre-generate stubs that verify correct context
     return context_mode() == CONTEXT_CHECK_REQUIRED;
   }
@@ -1996,7 +1997,7 @@ class InternalArrayConstructorStubBase : public HydrogenCodeStub {
     kind_ = kind;
   }
 
-  virtual bool IsPregenerated() { return true; }
+  virtual bool IsPregenerated(Isolate* isolate) V8_OVERRIDE { return true; }
   static void GenerateStubsAheadOfTime(Isolate* isolate);
   static void InstallDescriptors(Isolate* isolate);
 
@@ -2260,7 +2261,7 @@ class StubFailureTrampolineStub : public PlatformCodeStub {
   explicit StubFailureTrampolineStub(StubFunctionMode function_mode)
       : fp_registers_(CanUseFPRegisters()), function_mode_(function_mode) {}
 
-  virtual bool IsPregenerated() { return true; }
+  virtual bool IsPregenerated(Isolate* isolate) V8_OVERRIDE { return true; }
 
   static void GenerateAheadOfTime(Isolate* isolate);