Minimize malloc heap allocation on process startup.

test/cctest/test-alloc.cc

Index: test/cctest/test-alloc.cc
diff --git a/test/cctest/test-alloc.cc b/test/cctest/test-alloc.cc
index 4d9c218a43d5490b3cb0c4679c5acbb339bc2171..97671923d9941910f217eaa5bfcb62ac1314538f 100644
--- a/test/cctest/test-alloc.cc
+++ b/test/cctest/test-alloc.cc
@@ -186,7 +186,9 @@ class Block {
 TEST(CodeRange) {
   const int code_range_size = 16*MB;
   OS::Setup();
-  Isolate::Current()->code_range()->Setup(code_range_size);
+  Isolate::Current()->InitializeLoggingAndCounters();
+  CodeRange* code_range = new CodeRange(Isolate::Current());
+  code_range->Setup(code_range_size);
   int current_allocated = 0;
   int total_allocated = 0;
   List<Block> blocks(1000);
@@ -198,8 +200,7 @@ TEST(CodeRange) {
       size_t requested = (Page::kPageSize << (Pseudorandom() % 6)) +
            Pseudorandom() % 5000 + 1;
       size_t allocated = 0;
-      void* base = Isolate::Current()->code_range()->
-          AllocateRawMemory(requested, &allocated);
+      void* base = code_range->AllocateRawMemory(requested, &allocated);
       CHECK(base != NULL);
       blocks.Add(Block(base, static_cast<int>(allocated)));
       current_allocated += static_cast<int>(allocated);
@@ -207,8 +208,7 @@ TEST(CodeRange) {
     } else {
       // Free a block.
       int index = Pseudorandom() % blocks.length();
-      Isolate::Current()->code_range()->FreeRawMemory(
-          blocks[index].base, blocks[index].size);
+      code_range->FreeRawMemory(blocks[index].base, blocks[index].size);
       current_allocated -= blocks[index].size;
       if (index < blocks.length() - 1) {
         blocks[index] = blocks.RemoveLast();
@@ -218,5 +218,6 @@ TEST(CodeRange) {
     }
   }
 
-  Isolate::Current()->code_range()->TearDown();
+  code_range->TearDown();
+  delete code_range;
 }