Add a prepare for register allocation pass.

- Currently the pass just changes the uses of checks to the
  actual values.
- Also optimize array access, now that inputs can be constants.
- And fix another bug in the register allocator reveiled by
  this change.

Change-Id: I43be0dbde9330ee5c8f9d678de11361292d8bd98

1 files changed, 3 insertions, 0 deletions

diff --git a/compiler/optimizing/locations.h b/compiler/optimizing/locations.h
index 8d0715a..0e77deb 100644
--- a/compiler/optimizing/locations.h
+++ b/compiler/optimizing/locations.h
@@ -221,6 +221,7 @@ class Location : public ValueObject {
   }
 
   static Location RegisterOrConstant(HInstruction* instruction);
+  static Location ByteRegisterOrConstant(ManagedRegister reg, HInstruction* instruction);
 
   // The location of the first input to the instruction will be
   // used to replace this unallocated location.
@@ -422,6 +423,8 @@ class LocationSummary : public ArenaObject {
   DISALLOW_COPY_AND_ASSIGN(LocationSummary);
 };
 
+std::ostream& operator<<(std::ostream& os, const Location& location);
+
 }  // namespace art
 
 #endif  // ART_COMPILER_OPTIMIZING_LOCATIONS_H_