diff --git a/compiler/driver/compiler_driver.cc b/compiler/driver/compiler_driver.cc
index 22fcf87..84b6a52 100644
--- a/compiler/driver/compiler_driver.cc
+++ b/compiler/driver/compiler_driver.cc
@@ -659,7 +659,8 @@
 
 bool CompilerDriver::IsImageClass(const char* descriptor) const {
   if (!IsImage()) {
-    return true;
+    // NOTE: Currently unreachable, all callers check IsImage().
+    return false;
   } else {
     return image_classes_->find(descriptor) != image_classes_->end();
   }
@@ -992,6 +993,24 @@
   }
 }
 
+bool CompilerDriver::CanAssumeClassIsLoaded(mirror::Class* klass) {
+  Runtime* runtime = Runtime::Current();
+  if (!runtime->IsAotCompiler()) {
+    DCHECK(runtime->UseJit());
+    // Having the klass reference here implies that the klass is already loaded.
+    return true;
+  }
+  if (!IsImage()) {
+    // Assume loaded only if klass is in the boot image. App classes cannot be assumed
+    // loaded because we don't even know what class loader will be used to load them.
+    bool class_in_image = runtime->GetHeap()->FindSpaceFromObject(klass, false)->IsImageSpace();
+    return class_in_image;
+  }
+  std::string temp;
+  const char* descriptor = klass->GetDescriptor(&temp);
+  return IsImageClass(descriptor);
+}
+
 bool CompilerDriver::CanAssumeTypeIsPresentInDexCache(const DexFile& dex_file, uint32_t type_idx) {
   if (IsImage() &&
       IsImageClass(dex_file.StringDataByIdx(dex_file.GetTypeId(type_idx).descriptor_idx_))) {