tree 63e503da272d0be6d6dc243c29d4e7b184705710
parent 121c8a6494f2224830ed0ca33df5af0d8c077647
author David Brazdil <dbrazdil@google.com> 1461340620 +0100
committer David Brazdil <dbrazdil@google.com> 1461340620 +0100

ART: Naive NullCheck elimination in InstructionBuilder

Save a little bit of memory by not generating trivially redundant
HNullCheck instructions. This patch builds on the fact that the
InstructionBuilder now directly generates SSA form and looks at the
input of the NullCheck. For obvious cases, such as NewInstance/Array
or `this`, the NullCheck generation is completely avoided.

Bug: 28173563
Change-Id: I1fdf3b096c7a939f7b8586c02a2a6b44dfa43443