Do a parallel move in BoundsCheckSlowPath.

The two locations of the index and length could overlap,
so we need a parallel move. Also factorize the code for
doing a parallel move based on two locations.

Change-Id: Iee8b3459e2eed6704d45e9a564fb2cd050741ea4

1 files changed, 9 insertions, 0 deletions

diff --git a/compiler/optimizing/code_generator.cc b/compiler/optimizing/code_generator.cc
index 9d172638e1..6b5ec1d6ca 100644
--- a/compiler/optimizing/code_generator.cc
+++ b/compiler/optimizing/code_generator.cc
@@ -632,4 +632,13 @@ void CodeGenerator::ClearSpillSlotsFromLoopPhisInStackMap(HSuspendCheck* suspend
   }
 }
 
+void CodeGenerator::EmitParallelMoves(Location from1, Location to1, Location from2, Location to2) {
+  MoveOperands move1(from1, to1, nullptr);
+  MoveOperands move2(from2, to2, nullptr);
+  HParallelMove parallel_move(GetGraph()->GetArena());
+  parallel_move.AddMove(&move1);
+  parallel_move.AddMove(&move2);
+  GetMoveResolver()->EmitNativeCode(&parallel_move);
+}
+
 }  // namespace art