Fix a crash in optimizing compiler with the current method.
Crash was due to overwriting the location of the current method
in the slow path of an intrinsic.
Change-Id: I6ca58ef5b3cea19925e60b9500aef543bc5f71ef
diff --git a/test/491-current-method/src/Main.java b/test/491-current-method/src/Main.java
new file mode 100644
index 0000000..87ef052
--- /dev/null
+++ b/test/491-current-method/src/Main.java
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+class Main {
+
+ // The code below is written in a way that will crash
+ // the generated code at the time of submission of this test.
+ // Therefore, changes to the register allocator may
+ // affect the reproducibility of the crash.
+ public static void $noinline$foo(int a, int b, int c) {
+ // The division on x86 will take EAX and EDX, leaving ECX
+ // to put the ART current method.
+ c = c / 42;
+ // We use the empty string for forcing the slow path.
+ // The slow path for charAt when it is intrinsified, will
+ // move the parameter to ECX, and therefore overwrite the ART
+ // current method.
+ "".charAt(c);
+
+ // Do more things in the method to prevent inlining.
+ c = c / 42;
+ "".charAt(c);
+ c = c / 42;
+ "".charAt(c);
+ c = c / 42;
+ "".charAt(c);
+ c = c / 42;
+ "".charAt(c);
+ c = c / 42;
+ "".charAt(c);
+ c = c / 42;
+ "".charAt(c);
+ c = c / 42;
+ "".charAt(c);
+ c = c / 42;
+ "".charAt(c);
+ c = c / 42;
+ "".charAt(c);
+ c = c / 42;
+ "".charAt(c);
+ c = c / 42;
+ "".charAt(c);
+ }
+
+ public static void main(String[] args) {
+ boolean didThrow = false;
+ try {
+ $noinline$foo(1, 2, 3);
+ } catch (Throwable e) {
+ didThrow = true;
+ }
+
+ if (!didThrow) {
+ throw new Error("Expected an exception from charAt");
+ }
+ }
+}