Adds unary double operations to ARM64, enables many tests.

runtime/vm/constants_arm64.h

 // Copyright (c) 2014, 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_CONSTANTS_ARM64_H_
 #define VM_CONSTANTS_ARM64_H_
 
 #include "platform/assert.h"
 
 namespace dart {
@@ skipping 421 matching lines @@
   FPCompareFixed = FPFixed | B21 | B13,
   FCMPD = FPCompareFixed | B22,
   FCMPZD = FPCompareFixed | B22 | B3,
 };
 
 // C3.6.25
 enum FPOneSourceOp {
   FPOneSourceMask = 0x5f207c00,
   FPOneSourceFixed = FPFixed | B21 | B14,
   FMOVDD = FPOneSourceFixed | B22,
+  FABSD = FPOneSourceFixed | B22 | B15,
+  FNEGD = FPOneSourceFixed | B22 | B16,
+  FSQRTD = FPOneSourceFixed | B22 | B16 | B15,
 };
 
 // C3.6.26
 enum FPTwoSourceOp {
   FPTwoSourceMask = 0xff200c00,
   FPTwoSourceFixed = FPFixed | B21 | B11,
   FMULD = FPTwoSourceFixed | B22,
   FDIVD = FPTwoSourceFixed | B22 | B12,
   FADDD = FPTwoSourceFixed | B22 | B13,
   FSUBD = FPTwoSourceFixed | B22 | B13 | B12,
@@ skipping 455 matching lines @@
   static Instr* At(uword pc) { return reinterpret_cast<Instr*>(pc); }
 
  private:
   DISALLOW_ALLOCATION();
   DISALLOW_IMPLICIT_CONSTRUCTORS(Instr);
 };
 
 }  // namespace dart
 
 #endif  // VM_CONSTANTS_ARM64_H_