commit e3ff7b293be2a6791fe9d135d660c0cffe4bd73f
author David Brazdil <dbrazdil@google.com> Wed Mar 02 16:48:20 2016 +0000
committer David Brazdil <dbrazdil@google.com> Mon Apr 04 11:21:30 2016 +0100
tree d578d27cb78e6d2caef683cd8ac94c9a9752b192
parent 86ea7eeabe30c98bbe1651a51d03cb89776724e7

Refactor HGraphBuilder and SsaBuilder to remove HLocals

This patch merges the instruction-building phases from HGraphBuilder
and SsaBuilder into a single HInstructionBuilder class. As a result,
it is not necessary to generate HLocal, HLoadLocal and HStoreLocal
instructions any more, as the builder produces SSA form directly.

Saves 5-15% of arena-allocated memory (see bug for more data):
  GMS      20.46MB  =>  19.26MB  (-5.86%)
  Maps     24.12MB  =>  21.47MB  (-10.98%)
  YouTube  28.60MB  =>  26.01MB  (-9.05%)

Bug: 27894376
Change-Id: Iefe28d40600c169c5d306fd2c77034ae19476d90