Fixed various simulator-related space leaks.

src/arm64/simulator-arm64.cc

 // Copyright 2013 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.
 
 #include <stdlib.h>
 #include <cmath>
 #include <cstdarg>
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_ARM64
@@ skipping 482 matching lines @@
         addr_of_hlt - OFFSET_OF(Redirection, redirect_call_);
     return reinterpret_cast<Redirection*>(addr_of_redirection);
   }
 
   static void* ReverseRedirection(int64_t reg) {
     Redirection* redirection =
         FromHltInstruction(reinterpret_cast<Instruction*>(reg));
     return redirection->external_function<void*>();
   }
 
+  static void DeleteChain(Redirection* redirection) {
+    while (redirection != nullptr) {
+      Redirection* next = redirection->next_;
+      delete redirection;
+      redirection = next;
+    }
+  }
+
  private:
   void* external_function_;
   Instruction redirect_call_;
   ExternalReference::Type type_;
   Redirection* next_;
 };
 
 
+// static
+void Simulator::TearDown(HashMap* i_cache, Redirection* first) {
+  Redirection::DeleteChain(first);
+}
+
+
 // Calls into the V8 runtime are based on this very simple interface.
 // Note: To be able to return two values from some calls the code in runtime.cc
 // uses the ObjectPair structure.
 // The simulator assumes all runtime calls return two 64-bits values. If they
 // don't, register x1 is clobbered. This is fine because x1 is caller-saved.
 struct ObjectPair {
   int64_t res0;
   int64_t res1;
 };
 
@@ skipping 3298 matching lines @@
 
   delete[] format;
 }
 
 
 #endif  // USE_SIMULATOR
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM64