Use target-specific word instead of runtime word.

Change-Id: Ia11dc3cc520a1a5c7bd017013e5699af9570ce91
diff --git a/compiler/optimizing/code_generator.cc b/compiler/optimizing/code_generator.cc
index 05e5d7b..d6295db 100644
--- a/compiler/optimizing/code_generator.cc
+++ b/compiler/optimizing/code_generator.cc
@@ -30,7 +30,7 @@
 namespace art {
 
 void CodeGenerator::Compile(CodeAllocator* allocator) {
-  frame_size_ = GetGraph()->GetMaximumNumberOfOutVRegs() * kWordSize;
+  frame_size_ = GetGraph()->GetMaximumNumberOfOutVRegs() * GetWordSize();
   const GrowableArray<HBasicBlock*>* blocks = GetGraph()->GetBlocks();
   DCHECK(blocks->Get(0) == GetGraph()->GetEntryBlock());
   DCHECK(GoesToNextBlock(GetGraph()->GetEntryBlock(), blocks->Get(1)));