Fix movmskpd test, add masking to result.

runtime/vm/assembler_x64_test.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/assembler.h"
 #include "vm/os.h"
 #include "vm/unit_test.h"
@@ skipping 1697 matching lines @@
 
 ASSEMBLER_TEST_RUN(IntToDoubleConversion2, entry) {
   typedef double (*IntToDoubleConversion2Code)(int i);
   double res = reinterpret_cast<IntToDoubleConversion2Code>(entry)(3);
   EXPECT_FLOAT_EQ(3.0, res, 0.001);
 }
 
 
 ASSEMBLER_TEST_GENERATE(ExtractSignBits, assembler) {
   __ movmskpd(RAX, XMM0);
+  __ andq(RAX, Immediate(0x1));
   __ ret();
 }
 
 
 ASSEMBLER_TEST_RUN(ExtractSignBits, entry) {
   typedef int (*ExtractSignBits)(double d);
   int res = reinterpret_cast<ExtractSignBits>(entry)(1.0);
   EXPECT_EQ(0, res);
   res = reinterpret_cast<ExtractSignBits>(entry)(-1.0);
   EXPECT_EQ(1, res);
   res = reinterpret_cast<ExtractSignBits>(entry)(-0.0);
   EXPECT_EQ(1, res);
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64