ARM: Use the vsqrt instruction when available...

test/cctest/test-disasm-arm.cc

 // Copyright 2007-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 383 matching lines @@
             "e7ce1290       bfi r1, r0, #5, #10");
     COMPARE(bfi(r0, r1, 31, 1),
             "e7df0f91       bfi r0, r1, #31, #1");
     COMPARE(bfi(r1, r0, 31, 1),
             "e7df1f90       bfi r1, r0, #31, #1");
   }
 
   VERIFY_RUN();
 }
 
+
+
+TEST(Vfp) {
+  SETUP();
+
+  if (CpuFeatures::IsSupported(VFP3)) {
+    CpuFeatures::Scope scope(VFP3);
+    COMPARE(vsqrt(d0, d0),
+            "eeb10bc0       vsqrt.f64 d0, d0");
+  }
+
+  VERIFY_RUN();
+}