Inline methods with loops.

Compiling Gms/Fb/Framework/Docs:
- Overall compilation-time increase: 2.2%
- Overall code size increase: 1.1%

Performance improvements:
- Richards with jit: +6%
- Takl: +11%

Change-Id: I0a6fcf2a360e5ad193cd95b5c4fe92227ac6bd96

1 files changed, 64 insertions, 0 deletions

diff --git a/test/564-checker-inline-loop/src/Main.java b/test/564-checker-inline-loop/src/Main.java
new file mode 100644
index 0000000000..6929913864
--- /dev/null
+++ b/test/564-checker-inline-loop/src/Main.java
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2016 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.inlineLoop() inliner (before)
+  /// CHECK-DAG:     <<Invoke:i\d+>>  InvokeStaticOrDirect
+  /// CHECK-DAG:                      Return [<<Invoke>>]
+
+  /// CHECK-START: int Main.inlineLoop() inliner (after)
+  /// CHECK-NOT:                      InvokeStaticOrDirect
+
+  /// CHECK-START: int Main.inlineLoop() inliner (after)
+  /// CHECK-DAG:     <<Constant:i\d+>>   IntConstant 42
+  /// CHECK-DAG:                         Return [<<Constant>>]
+
+  /// CHECK-START: int Main.inlineLoop() licm (after)
+  /// CHECK:                         Goto loop:{{B\d+}}
+
+  public static int inlineLoop() {
+    return loopMethod();
+  }
+
+  /// CHECK-START: void Main.inlineWithinLoop() inliner (before)
+  /// CHECK:      InvokeStaticOrDirect
+
+  /// CHECK-START: void Main.inlineWithinLoop() inliner (after)
+  /// CHECK-NOT:  InvokeStaticOrDirect
+
+  /// CHECK-START: void Main.inlineWithinLoop() licm (after)
+  /// CHECK-DAG:  Goto loop:<<OuterLoop:B\d+>> outer_loop:none
+  /// CHECK-DAG:  Goto outer_loop:<<OuterLoop>>
+
+  public static void inlineWithinLoop() {
+    while (doLoop) {
+      loopMethod();
+    }
+  }
+
+  public static int loopMethod() {
+    while (doLoop) {}
+    return 42;
+  }
+
+  public static boolean doLoop = false;
+
+  public static void main(String[] args) {
+    inlineLoop();
+    inlineWithinLoop();
+  }
+}