diff --git a/compiler/optimizing/graph_checker.cc b/compiler/optimizing/graph_checker.cc
index fbcbe36..c88baa8 100644
--- a/compiler/optimizing/graph_checker.cc
+++ b/compiler/optimizing/graph_checker.cc
@@ -25,11 +25,6 @@
 #include "base/bit_vector-inl.h"
 #include "base/scoped_arena_allocator.h"
 #include "base/scoped_arena_containers.h"
-#include "handle.h"
-#include "mirror/class.h"
-#include "obj_ptr-inl.h"
-#include "scoped_thread_state_change-inl.h"
-#include "subtype_check.h"
 
 namespace art {
 
@@ -553,83 +548,28 @@
   }
 }
 
-void GraphChecker::CheckTypeCheckBitstringInput(HTypeCheckInstruction* check,
-                                                size_t input_pos,
-                                                bool check_value,
-                                                uint32_t expected_value,
-                                                const char* name) {
-  if (!check->InputAt(input_pos)->IsIntConstant()) {
-    AddError(StringPrintf("%s:%d (bitstring) expects a HIntConstant input %zu (%s), not %s:%d.",
-                          check->DebugName(),
-                          check->GetId(),
-                          input_pos,
-                          name,
-                          check->InputAt(2)->DebugName(),
-                          check->InputAt(2)->GetId()));
-  } else if (check_value) {
-    uint32_t actual_value =
-        static_cast<uint32_t>(check->InputAt(input_pos)->AsIntConstant()->GetValue());
-    if (actual_value != expected_value) {
-      AddError(StringPrintf("%s:%d (bitstring) has %s 0x%x, not 0x%x as expected.",
-                            check->DebugName(),
-                            check->GetId(),
-                            name,
-                            actual_value,
-                            expected_value));
-    }
-  }
-}
-
-void GraphChecker::HandleTypeCheckInstruction(HTypeCheckInstruction* check) {
+void GraphChecker::VisitCheckCast(HCheckCast* check) {
   VisitInstruction(check);
   HInstruction* input = check->InputAt(1);
-  if (check->GetTypeCheckKind() == TypeCheckKind::kBitstringCheck) {
-    if (!input->IsNullConstant()) {
-      AddError(StringPrintf("%s:%d (bitstring) expects a HNullConstant as second input, not %s:%d.",
-                            check->DebugName(),
-                            check->GetId(),
-                            input->DebugName(),
-                            input->GetId()));
-    }
-    bool check_values = false;
-    BitString::StorageType expected_path_to_root = 0u;
-    BitString::StorageType expected_mask = 0u;
-    {
-      ScopedObjectAccess soa(Thread::Current());
-      ObjPtr<mirror::Class> klass = check->GetClass().Get();
-      MutexLock subtype_check_lock(Thread::Current(), *Locks::subtype_check_lock_);
-      SubtypeCheckInfo::State state = SubtypeCheck<ObjPtr<mirror::Class>>::GetState(klass);
-      if (state == SubtypeCheckInfo::kAssigned) {
-        expected_path_to_root =
-            SubtypeCheck<ObjPtr<mirror::Class>>::GetEncodedPathToRootForTarget(klass);
-        expected_mask = SubtypeCheck<ObjPtr<mirror::Class>>::GetEncodedPathToRootMask(klass);
-        check_values = true;
-      } else {
-        AddError(StringPrintf("%s:%d (bitstring) references a class with unassigned bitstring.",
-                              check->DebugName(),
-                              check->GetId()));
-      }
-    }
-    CheckTypeCheckBitstringInput(
-        check, /* input_pos */ 2, check_values, expected_path_to_root, "path_to_root");
-    CheckTypeCheckBitstringInput(check, /* input_pos */ 3, check_values, expected_mask, "mask");
-  } else {
-    if (!input->IsLoadClass()) {
-      AddError(StringPrintf("%s:%d (classic) expects a HLoadClass as second input, not %s:%d.",
-                            check->DebugName(),
-                            check->GetId(),
-                            input->DebugName(),
-                            input->GetId()));
-    }
+  if (!input->IsLoadClass()) {
+    AddError(StringPrintf("%s:%d expects a HLoadClass as second input, not %s:%d.",
+                          check->DebugName(),
+                          check->GetId(),
+                          input->DebugName(),
+                          input->GetId()));
   }
 }
 
-void GraphChecker::VisitCheckCast(HCheckCast* check) {
-  HandleTypeCheckInstruction(check);
-}
-
 void GraphChecker::VisitInstanceOf(HInstanceOf* instruction) {
-  HandleTypeCheckInstruction(instruction);
+  VisitInstruction(instruction);
+  HInstruction* input = instruction->InputAt(1);
+  if (!input->IsLoadClass()) {
+    AddError(StringPrintf("%s:%d expects a HLoadClass as second input, not %s:%d.",
+                          instruction->DebugName(),
+                          instruction->GetId(),
+                          input->DebugName(),
+                          input->GetId()));
+  }
 }
 
 void GraphChecker::HandleLoop(HBasicBlock* loop_header) {