ART: ARM64: Fix saved fpu stack offsets for SIMD.

Fix the bug when a wrong stack offset was recorded for a FP
saved in a SlowPathCode: this happened when graph had SIMD
loops and some regular FP registers live across a slow path.

Test: test-art-target, test-art-host.

Change-Id: I08b32c9877fcd468dafa6027c156e544d730f1f7

1 files changed, 62 insertions, 0 deletions

diff --git a/test/597-deopt-busy-loop/src/SimpleLoop.java b/test/597-deopt-busy-loop/src/SimpleLoop.java
new file mode 100644
index 0000000000..12298a90d9
--- /dev/null
+++ b/test/597-deopt-busy-loop/src/SimpleLoop.java
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+public class SimpleLoop implements Runnable {
+    static final int numberOfThreads = 2;
+    volatile static boolean sExitFlag = false;
+    volatile static boolean sEntered = false;
+    int threadIndex;
+
+    SimpleLoop(int index) {
+        threadIndex = index;
+    }
+
+    public static void main() throws Exception {
+        final Thread[] threads = new Thread[numberOfThreads];
+        for (int t = 0; t < threads.length; t++) {
+            threads[t] = new Thread(new SimpleLoop(t));
+            threads[t].start();
+        }
+        for (Thread t : threads) {
+            t.join();
+        }
+
+        System.out.println("Simple loop finishing");
+    }
+
+    public void $noinline$busyLoop() {
+        Main.assertIsManaged();
+        sEntered = true;
+        for (;;) {
+            if (sExitFlag) {
+                break;
+            }
+        }
+        Main.assertIsInterpreted();
+    }
+
+    public void run() {
+        if (threadIndex == 0) {
+            while (!sEntered) {
+              Thread.yield();
+            }
+            Main.deoptimizeAll();
+            sExitFlag = true;
+        } else {
+            $noinline$busyLoop();
+        }
+    }
+}