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

src/arm/code-stubs-arm.cc

 // 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 604 matching lines @@
   __ eor(result_reg, result_reg, Operand(scratch_high, ASR, 31));
   __ add(result_reg, result_reg, Operand(scratch_high, LSR, 31));
 
   __ bind(&done);
 
   __ Pop(scratch_high, scratch_low);
   __ Ret();
 }
 
 
-bool WriteInt32ToHeapNumberStub::IsPregenerated() {
+bool WriteInt32ToHeapNumberStub::IsPregenerated(Isolate* isolate) {
   // These variants are compiled ahead of time.  See next method.
   if (the_int_.is(r1) && the_heap_number_.is(r0) && scratch_.is(r2)) {
     return true;
   }
   if (the_int_.is(r2) && the_heap_number_.is(r0) && scratch_.is(r3)) {
     return true;
   }
   // Other register combinations are generated as and when they are needed,
   // so it is unsafe to call them from stubs (we can't generate a stub while
   // we are generating a stub).
@@ skipping 2051 matching lines @@
     __ Ret();
   }
 }
 
 
 bool CEntryStub::NeedsImmovableCode() {
   return true;
 }
 
 
-bool CEntryStub::IsPregenerated() {
-  return (!save_doubles_ || Isolate::Current()->fp_stubs_generated()) &&
+bool CEntryStub::IsPregenerated(Isolate* isolate) {
+  return (!save_doubles_ || isolate->fp_stubs_generated()) &&
           result_size_ == 1;
 }
 
 
 void CodeStub::GenerateStubsAheadOfTime(Isolate* isolate) {
   CEntryStub::GenerateAheadOfTime(isolate);
   WriteInt32ToHeapNumberStub::GenerateFixedRegStubsAheadOfTime(isolate);
   StoreBufferOverflowStub::GenerateFixedRegStubsAheadOfTime(isolate);
   StubFailureTrampolineStub::GenerateAheadOfTime(isolate);
   RecordWriteStub::GenerateFixedRegStubsAheadOfTime(isolate);
@@ skipping 3741 matching lines @@
   // StringAddStub::Generate
   { REG(r7), REG(r1), REG(r4), EMIT_REMEMBERED_SET },
   { REG(r7), REG(r0), REG(r4), EMIT_REMEMBERED_SET },
   // Null termination.
   { REG(no_reg), REG(no_reg), REG(no_reg), EMIT_REMEMBERED_SET}
 };
 
 #undef REG
 
 
-bool RecordWriteStub::IsPregenerated() {
+bool RecordWriteStub::IsPregenerated(Isolate* isolate) {
   for (const AheadOfTimeWriteBarrierStubList* entry = kAheadOfTime;
        !entry->object.is(no_reg);
        entry++) {
     if (object_.is(entry->object) &&
         value_.is(entry->value) &&
         address_.is(entry->address) &&
         remembered_set_action_ == entry->action &&
         save_fp_regs_mode_ == kDontSaveFPRegs) {
       return true;
     }
@@ skipping 663 matching lines @@
   __ bind(&fast_elements_case);
   GenerateCase(masm, FAST_ELEMENTS);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM