Support int-to-long conversions in the optimizing compiler.

- Add support for the int-to-float Dex instruction in the
  optimizing compiler.
- Add a HTypeConversion node type for control-flow graphs.
- Generate x86, x86-64 and ARM (but not ARM64) code for
  int-to-float HTypeConversion nodes.
- Add a 64-bit "Move doubleword to quadword with
  sign-extension" (MOVSXD) instruction to the x86-64
  assembler.
- Add related tests to test/422-type-conversion.

Change-Id: Ieb8ec5380f9c411857119c79aa8d0728fd10f780

3 files changed, 46 insertions, 0 deletions

diff --git a/test/422-type-conversion/expected.txt b/test/422-type-conversion/expected.txt
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/test/422-type-conversion/expected.txt
diff --git a/test/422-type-conversion/info.txt b/test/422-type-conversion/info.txt
new file mode 100644
index 0000000000..e734f3213e
--- /dev/null
+++ b/test/422-type-conversion/info.txt
@@ -0,0 +1 @@
+Tests for type conversions.
diff --git a/test/422-type-conversion/src/Main.java b/test/422-type-conversion/src/Main.java
new file mode 100644
index 0000000000..997491997b
--- /dev/null
+++ b/test/422-type-conversion/src/Main.java
@@ -0,0 +1,45 @@
+/*
+ * 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.
+ */
+
+// Note that $opt$ is a marker for the optimizing compiler to ensure
+// it does compile the method.
+public class Main {
+
+  public static void assertEquals(long expected, long result) {
+    if (expected != result) {
+      throw new Error("Expected: " + expected + ", found: " + result);
+    }
+  }
+
+  public static void main(String[] args) {
+    intToLong();
+  }
+
+  private static void intToLong() {
+    assertEquals(1L, $opt$IntToLong(1));
+    assertEquals(0L, $opt$IntToLong(0));
+    assertEquals(-1L, $opt$IntToLong(-1));
+    assertEquals(51L, $opt$IntToLong(51));
+    assertEquals(-51L, $opt$IntToLong(-51));
+    assertEquals(2147483647L, $opt$IntToLong(2147483647));  // (2^31) - 1
+    assertEquals(-2147483647L, $opt$IntToLong(-2147483647));  // -(2^31) - 1
+    assertEquals(-2147483648L, $opt$IntToLong(-2147483648));  // -(2^31)
+  }
+
+  static long $opt$IntToLong(int a){
+    return a;
+  }
+}