Merge "Implement System.arraycopy intrinsic on x86."

1 files changed, 30 insertions, 1 deletions

diff --git a/test/537-checker-arraycopy/src/Main.java b/test/537-checker-arraycopy/src/Main.java
index 30ccc56b80..7c124caa8e 100644
--- a/test/537-checker-arraycopy/src/Main.java
+++ b/test/537-checker-arraycopy/src/Main.java
@@ -50,7 +50,7 @@ public class Main {
   }
 
   /// CHECK-START-X86_64: void Main.arraycopy() disassembly (after)
-  /// CHECK:          InvokeStaticOrDirect
+  /// CHECK:          InvokeStaticOrDirect intrinsic:SystemArrayCopy
   /// CHECK-NOT:      test
   /// CHECK-NOT:      call
   /// CHECK:          ReturnVoid
@@ -65,7 +65,36 @@ public class Main {
     System.arraycopy(obj, 1, obj, 0, 1);
   }
 
+  // Test case for having enough registers on x86 for the arraycopy intrinsic.
+  /// CHECK-START-X86: void Main.arraycopy(java.lang.Object[], int) disassembly (after)
+  /// CHECK:          InvokeStaticOrDirect intrinsic:SystemArrayCopy
+  /// CHECK-NOT:      mov {{[a-z]+}}, [esp + {{[0-9]+}}]
+  /// CHECK:          ReturnVoid
   public static void arraycopy(Object[] obj, int pos) {
     System.arraycopy(obj, pos, obj, 0, obj.length);
   }
+
+  // Test case for having enough registers on x86 for the arraycopy intrinsic
+  // when an input is passed twice.
+  /// CHECK-START-X86: int Main.arraycopy2(java.lang.Object[], int) disassembly (after)
+  /// CHECK:          InvokeStaticOrDirect intrinsic:SystemArrayCopy
+  /// CHECK-NOT:      mov {{[a-z]+}}, [esp + {{[0-9]+}}]
+  /// CHECK:          Return
+  public static int arraycopy2(Object[] obj, int pos) {
+    System.arraycopy(obj, pos, obj, pos - 1, obj.length);
+    return pos;
+  }
+
+  // Test case for not having enough registers on x86. The arraycopy intrinsic
+  // will ask for length to be in stack and load it.
+  /// CHECK-START-X86: int Main.arraycopy3(java.lang.Object[], java.lang.Object[], int, int, int) disassembly (after)
+  /// CHECK:          InvokeStaticOrDirect intrinsic:SystemArrayCopy
+  /// CHECK:          mov {{[a-z]+}}, [esp + {{[0-9]+}}]
+  /// CHECK:          Return
+  public static int arraycopy3(Object[] obj1, Object[] obj2, int input1, int input3, int input4) {
+    System.arraycopy(obj1, input1, obj2, input3, input4);
+    System.out.println(obj1);
+    System.out.println(obj2);
+    return input1 + input3 + input4;
+  }
 }