Allow nested inlining.

Also run optimizations before iterating over
the instructions to get rid of, e.g., null checks.

Change-Id: I6e52e61ce4d0ccb63d687afea09bb4722453bb6a
diff --git a/test/446-checker-inliner2/expected.txt b/test/446-checker-inliner2/expected.txt
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/test/446-checker-inliner2/expected.txt
diff --git a/test/446-checker-inliner2/info.txt b/test/446-checker-inliner2/info.txt
new file mode 100644
index 0000000..66a3270
--- /dev/null
+++ b/test/446-checker-inliner2/info.txt
@@ -0,0 +1 @@
+Tests inlining in the optimizing compiler.
diff --git a/test/446-checker-inliner2/src/Main.java b/test/446-checker-inliner2/src/Main.java
new file mode 100644
index 0000000..ecf071e
--- /dev/null
+++ b/test/446-checker-inliner2/src/Main.java
@@ -0,0 +1,72 @@
+/*
+* Copyright (C) 2014 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 Main {
+
+  // CHECK-START: int Main.inlineInstanceCall(Main) inliner (before)
+  // CHECK-DAG:     [[Invoke:i\d+]]  InvokeStaticOrDirect
+  // CHECK-DAG:                      Return [ [[Invoke]] ]
+
+  // CHECK-START: int Main.inlineInstanceCall(Main) inliner (after)
+  // CHECK-NOT:                      InvokeStaticOrDirect
+
+  // CHECK-START: int Main.inlineInstanceCall(Main) inliner (after)
+  // CHECK-DAG:     [[Field:i\d+]]   InstanceFieldGet
+  // CHECK-DAG:                      Return [ [[Field]] ]
+
+  public static int inlineInstanceCall(Main m) {
+    return m.foo();
+  }
+
+  private int foo() {
+    return field;
+  }
+
+  int field = 42;
+
+  // CHECK-START: int Main.inlineNestedCall() inliner (before)
+  // CHECK-DAG:     [[Invoke:i\d+]]  InvokeStaticOrDirect
+  // CHECK-DAG:                      Return [ [[Invoke]] ]
+
+  // CHECK-START: int Main.inlineNestedCall() inliner (after)
+  // CHECK-NOT:                      InvokeStaticOrDirect
+
+  // CHECK-START: int Main.inlineNestedCall() inliner (after)
+  // CHECK-DAG:     [[Const38:i\d+]] IntConstant 38
+  // CHECK-DAG:                      Return [ [[Const38]] ]
+
+  public static int inlineNestedCall() {
+    return nestedCall();
+  }
+
+  public static int nestedCall() {
+    return bar();
+  }
+
+  public static int bar() {
+    return 38;
+  }
+
+  public static void main(String[] args) {
+    if (inlineInstanceCall(new Main()) != 42) {
+      throw new Error("Expected 42");
+    }
+
+    if (inlineNestedCall() != 38) {
+      throw new Error("Expected 38");
+    }
+  }
+}