Record implicit null checks at the actual invoke time.

ImplicitNullChecks are recorded only for instructions directly (see NB
below) preceeded by NullChecks in the graph. This way we avoid recording
redundant safepoints and minimize the code size increase.

NB: ParallalelMoves might be inserted by the register allocator between
the NullChecks and their uses. These modify the environment and the
correct action would be to reverse their modification. This will be
addressed in a follow-up CL.

Change-Id: Ie50006e5a4bd22932dcf11348f5a655d253cd898

1 files changed, 2 insertions, 1 deletions

diff --git a/compiler/optimizing/code_generator_arm.h b/compiler/optimizing/code_generator_arm.h
index fe373d5..0de6669 100644
--- a/compiler/optimizing/code_generator_arm.h
+++ b/compiler/optimizing/code_generator_arm.h
@@ -139,7 +139,8 @@ class InstructionCodeGeneratorARM : public HGraphVisitor {
   void GenerateMemoryBarrier(MemBarrierKind kind);
   void GenerateWideAtomicStore(Register addr, uint32_t offset,
                                Register value_lo, Register value_hi,
-                               Register temp1, Register temp2);
+                               Register temp1, Register temp2,
+                               HInstruction* instruction);
   void GenerateWideAtomicLoad(Register addr, uint32_t offset,
                               Register out_lo, Register out_hi);
   void HandleFieldSet(HInstruction* instruction, const FieldInfo& field_info);