Load app images

Support in-place patching of the app image based on boot image
location and app oat location. Only loads for art run test so far
since we do not automatically generate app images for app installs.

N5 maps launch time (~200 runs):
Before: 930ms
After: 878.18ms
After + image class table: 864.57ms

TODO:
Oatdump support.
Store class loaders as class roots in image.

Bug: 22858531

Change-Id: I9cbc645645e62ea2ed1ad8e139e91af7d88514c1

1 files changed, 2 insertions, 2 deletions

diff --git a/compiler/driver/compiler_driver.cc b/compiler/driver/compiler_driver.cc
index d0215255e8..818d50a994 100644
--- a/compiler/driver/compiler_driver.cc
+++ b/compiler/driver/compiler_driver.cc
@@ -730,8 +730,8 @@ void CompilerDriver::PreCompile(jobject class_loader, const std::vector<const De
 
 bool CompilerDriver::IsImageClass(const char* descriptor) const {
   if (!IsBootImage()) {
-    // NOTE: Currently unreachable, all callers check IsImage().
-    return false;
+    // NOTE: Currently only reachable from InitImageMethodVisitor for the app image case.
+    return true;
   } else {
     return image_classes_->find(descriptor) != image_classes_->end();
   }