Add signMask getter to Float32x4

runtime/vm/bootstrap_natives.h

 // 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.
 
 #ifndef VM_BOOTSTRAP_NATIVES_H_
 #define VM_BOOTSTRAP_NATIVES_H_
 
 #include "vm/native_entry.h"
 
 // bootstrap dart natives used in the core dart library.
@@ skipping 184 matching lines @@
   V(Float32x4_cmpgte, 2)                                                       \
   V(Float32x4_cmpequal, 2)                                                     \
   V(Float32x4_cmpnequal, 2)                                                    \
   V(Float32x4_scale, 2)                                                        \
   V(Float32x4_abs, 1)                                                          \
   V(Float32x4_clamp, 3)                                                        \
   V(Float32x4_getX, 1)                                                         \
   V(Float32x4_getY, 1)                                                         \
   V(Float32x4_getZ, 1)                                                         \
   V(Float32x4_getW, 1)                                                         \
+  V(Float32x4_getSignMask, 1)                                                  \
   V(Float32x4_shuffle, 2)                                                      \
   V(Float32x4_withZWInXY, 2)                                                   \
   V(Float32x4_interleaveXY, 2)                                                 \
   V(Float32x4_interleaveZW, 2)                                                 \
   V(Float32x4_interleaveXYPairs, 2)                                            \
   V(Float32x4_interleaveZWPairs, 2)                                            \
   V(Float32x4_setX, 2)                                                         \
   V(Float32x4_setY, 2)                                                         \
   V(Float32x4_setZ, 2)                                                         \
   V(Float32x4_setW, 2)                                                         \
@@ skipping 88 matching lines @@
   static void DN_##name(Dart_NativeArguments args);
 
   BOOTSTRAP_NATIVE_LIST(DECLARE_BOOTSTRAP_NATIVE)
 
 #undef DECLARE_BOOTSTRAP_NATIVE
 };
 
 }  // namespace dart
 
 #endif  // VM_BOOTSTRAP_NATIVES_H_