tree c9c66b3d6bf001491ddd6a59d16d345d5656db8f
parent ba6233527e455368bba02efe963dd1e24d971727
author Roland Levillain <rpl@google.com> 1427382063 +0000
committer Roland Levillain <rpl@google.com> 1427802453 +0100

Use unique location catalogs to encode Dex register maps.

- For each CodeInfo object (i.e. for each method), compute a
  variable index size location catalog  of unique Dex
  register locations.  In Dex register maps, instead of
  storing the actual location of a (live) Dex register,
  store the index of the location catalog entry containing
  that Dex register location.
- Adjust art::StackMapStream,
  art::CheckReferenceMapVisitor::CheckOptimizedMethod,
  art::StackVisitor::GetVRegFromOptimizedCode, and
  art::StackVisitor::SetVRegFromOptimizedCode.
- Add LoadBits and StoreBits methods to art::MemoryRegion
  to load and store a block of adjacent bits in a memory
  region.
- Update compiler/optimizing/stack_map_test.cc.
- Remove the default value for parameter EmptyFn of
  art::HashMap.  This default value did not seem to make
  sense, as it would create an "empty function" for type Key
  by default, whereas art::HashMap expects an "empty
  function" for type std::pair<Key, Value>.

Change-Id: Id9e49d7756c253ce41c36630cd832208d06c2e28