Compile-time tuning: register/bb utilities

This CL yeilds about a 4% improvement in the compilation phase
of dex2oat (single-threaded; multi-threaded compilation is
more difficult to accurately measure).  The register utilities
could stand to be completely rewritten, but this gets most of the
easy benefit.

Next up: the assembly phase.

Change-Id: Ife5a474e9b1a6d9e501e888dda6749d34eb77e96
diff --git a/compiler/dex/quick/codegen_util.cc b/compiler/dex/quick/codegen_util.cc
index 3aa2f64..f13ab2d 100644
--- a/compiler/dex/quick/codegen_util.cc
+++ b/compiler/dex/quick/codegen_util.cc
@@ -956,6 +956,8 @@
       throw_launchpads_(arena, 2048, kGrowableArrayThrowLaunchPads),
       suspend_launchpads_(arena, 4, kGrowableArraySuspendLaunchPads),
       intrinsic_launchpads_(arena, 2048, kGrowableArrayMisc),
+      tempreg_info_(arena, 20, kGrowableArrayMisc),
+      reginfo_map_(arena, 64, kGrowableArrayMisc),
       data_offset_(0),
       total_size_(0),
       block_label_list_(NULL),