We should never allocate a 0-sized buffer, so never grow from 0.

src/lithium.cc

 // Copyright 2012 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 "src/v8.h"
 
 #include "src/lithium.h"
 #include "src/scopes.h"
 #include "src/serialize.h"
 
@@ skipping 439 matching lines @@
   }
 
   chunk->set_allocated_double_registers(
       allocator.assigned_double_registers());
 
   return chunk;
 }
 
 
 Handle<Code> LChunk::Codegen() {
-  MacroAssembler assembler(info()->isolate(), NULL,
-                           Assembler::kMinimalBufferSize);
+  MacroAssembler assembler(info()->isolate(), NULL, 0);
   LOG_CODE_EVENT(info()->isolate(),
                  CodeStartLinePosInfoRecordEvent(
                      assembler.positions_recorder()));
   // TODO(yangguo) remove this once the code serializer handles code stubs.
   if (info()->will_serialize()) assembler.enable_serializer();
   LCodeGen generator(this, &assembler, info());
 
   MarkEmptyBlocks();
 
   if (generator.GenerateCode()) {
@@ skipping 171 matching lines @@
 
 
 LPhase::~LPhase() {
   if (ShouldProduceTraceOutput()) {
     isolate()->GetHTracer()->TraceLithium(name(), chunk_);
   }
 }
 
 
 } }  // namespace v8::internal