Remove dex_pc's default value from top level HInstruction

This clearly hints that the dex_pc is stored in the super class and
doesn't need to be reimplemented in subclasses.

Change-Id: Ifd4aa95190c4c89367b4dd2cc8ab0ffd263659ac
diff --git a/compiler/optimizing/bounds_check_elimination.cc b/compiler/optimizing/bounds_check_elimination.cc
index 960f4d9..2c7c127 100644
--- a/compiler/optimizing/bounds_check_elimination.cc
+++ b/compiler/optimizing/bounds_check_elimination.cc
@@ -965,7 +965,8 @@
             suspend_check->GetEnvironment(), header);
       }
 
-      HArrayLength* new_array_length = new (graph->GetArena()) HArrayLength(array);
+      HArrayLength* new_array_length
+          = new (graph->GetArena()) HArrayLength(array, array->GetDexPc());
       deopt_block->InsertInstructionBefore(new_array_length, deopt_block->GetLastInstruction());
 
       if (loop_entry_test_block_added) {