Set more RTI only if they are valid

Follow-up to aosp/2442280. We haven't seen crashes with these ones,
but we can't guarantee that the RTI will be valid in these code paths.

Test: art/test/testrunner/testrunner.py --host --64 --optimizing -b
Change-Id: I80da85a6549ba0275a80027016363e0cf9fb8045
diff --git a/compiler/optimizing/instruction_simplifier.cc b/compiler/optimizing/instruction_simplifier.cc
index 86b9dba..12ca30f 100644
--- a/compiler/optimizing/instruction_simplifier.cc
+++ b/compiler/optimizing/instruction_simplifier.cc
@@ -970,7 +970,7 @@
                           pred_get->GetFieldInfo().GetDexFile(),
                           pred_get->GetDexPc());
     if (pred_get->GetType() == DataType::Type::kReference) {
-      replace_with->SetReferenceTypeInfo(pred_get->GetReferenceTypeInfo());
+      replace_with->SetReferenceTypeInfoIfValid(pred_get->GetReferenceTypeInfo());
     }
     pred_get->GetBlock()->InsertInstructionBefore(replace_with, pred_get);
     pred_get->ReplaceWith(replace_with);
@@ -2782,7 +2782,7 @@
   ArenaAllocator* allocator = block->GetGraph()->GetAllocator();
   HStringBuilderAppend* append = new (allocator) HStringBuilderAppend(
       fmt, num_args, has_fp_args, allocator, invoke->GetDexPc());
-  append->SetReferenceTypeInfo(invoke->GetReferenceTypeInfo());
+  append->SetReferenceTypeInfoIfValid(invoke->GetReferenceTypeInfo());
   for (size_t i = 0; i != num_args; ++i) {
     append->SetArgumentAt(i, args[num_args - 1u - i]);
   }