Support compiling run-tests with jack

This CL adds support to compile run-test source files with jack. When
a test needs to rely on class files, we use jill to convert them to a
jack library.

We need to pass the full classpath to jack containing at least core
classes (like java.lang.Object). This means the Android tree must
have been compiled with jack first so we find all the necessary
classes.jack files.

Some tests still rely on dex files generated with the old toolchain.
We keep building them this way for the moment and will update them
later, when they get ready for Jack.

Also updates a few tests dealing with garbage collection to avoid a
situation where a reference can be retained by a local DEX register.

Bug: 19467889

(cherry picked from commit 19ac0276208f0afef6ba8a4ab34b74a59b8d11d7)

Change-Id: Ia5a989b83430ffe8298a869a1da970b756721bb0

1 files changed, 12 insertions, 11 deletions

diff --git a/test/114-ParallelGC/src/Main.java b/test/114-ParallelGC/src/Main.java
index 46029cf..159dd5c 100644
--- a/test/114-ParallelGC/src/Main.java
+++ b/test/114-ParallelGC/src/Main.java
@@ -53,20 +53,21 @@ public class Main implements Runnable {
         }
 
         // Allocate objects to definitely run GC before quitting.
-        ArrayList<Object> l = new ArrayList<Object>();
-        try {
-            for (int i = 0; i < 100000; i++) {
-                l.add(new ArrayList<Object>(i));
-            }
-        } catch (OutOfMemoryError oom) {
-        }
-        // Make the (outer) ArrayList unreachable. Note it may still
-        // be reachable under an interpreter or a compiler without a
-        // liveness analysis.
-        l = null;
+        allocateObjectsToRunGc();
+
         new ArrayList<Object>(50);
     }
 
+    private static void allocateObjectsToRunGc() {
+      ArrayList<Object> l = new ArrayList<Object>();
+      try {
+          for (int i = 0; i < 100000; i++) {
+              l.add(new ArrayList<Object>(i));
+          }
+      } catch (OutOfMemoryError oom) {
+      }
+    }
+
     private Main(CyclicBarrier startBarrier) {
         this.startBarrier = startBarrier;
     }