From b95fb775cc4c08349d0d905adbc96ad85e50601d Mon Sep 17 00:00:00 2001
From: Vladimir Marko <vmarko@google.com>
Date: Wed, 30 Sep 2015 13:32:31 +0100
Subject: Optimizing: Clean up after tagging arena allocations.

Change-Id: Id6ee1fe44c4c57d373db7a39530f29a5ca9aee18
---
 compiler/optimizing/code_generator.h | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'compiler/optimizing/code_generator.h')

diff --git a/compiler/optimizing/code_generator.h b/compiler/optimizing/code_generator.h
index 0a3698946e..acce5b3359 100644
--- a/compiler/optimizing/code_generator.h
+++ b/compiler/optimizing/code_generator.h
@@ -531,6 +531,8 @@ class CodeGenerator {
 
   template <typename LabelType>
   LabelType* CommonInitializeLabels() {
+    // We use raw array allocations instead of ArenaVector<> because Labels are
+    // non-constructible and non-movable and as such cannot be held in a vector.
     size_t size = GetGraph()->GetBlocks().size();
     LabelType* labels = GetGraph()->GetArena()->AllocArray<LabelType>(size,
                                                                       kArenaAllocCodeGenerator);
-- 
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