MIPS: Split TemplateHashMapImpl::Lookup into two methods.

src/mips/simulator-mips.cc

 // Copyright 2011 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 <limits.h>
 #include <stdarg.h>
 #include <stdlib.h>
 #include <cmath>
 
 #include "src/v8.h"
@@ skipping 871 matching lines @@
     DCHECK_EQ(0, start & CachePage::kPageMask);
     offset = 0;
   }
   if (size != 0) {
     FlushOnePage(i_cache, start, size);
   }
 }
 
 
 CachePage* Simulator::GetCachePage(v8::internal::HashMap* i_cache, void* page) {
-  v8::internal::HashMap::Entry* entry = i_cache->Lookup(page,
-                                                        ICacheHash(page),
-                                                        true);
+  v8::internal::HashMap::Entry* entry =
+      i_cache->LookupOrInsert(page, ICacheHash(page));
   if (entry->value == NULL) {
     CachePage* new_page = new CachePage();
     entry->value = new_page;
   }
   return reinterpret_cast<CachePage*>(entry->value);
 }
 
 
 // Flush from start up to and not including start + size.
 void Simulator::FlushOnePage(v8::internal::HashMap* i_cache,
@@ skipping 2537 matching lines @@
 }
 
 
 #undef UNSUPPORTED
 
 } }  // namespace v8::internal
 
 #endif  // USE_SIMULATOR
 
 #endif  // V8_TARGET_ARCH_MIPS