Adds unary double operations to ARM64, enables many tests.

runtime/vm/assembler_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_ASSEMBLER_ARM64_H_
 #define VM_ASSEMBLER_ARM64_H_
 
 #ifndef VM_ASSEMBLER_H_
 #error Do not include assembler_arm64.h directly; use assembler.h instead.
 #endif
@@ skipping 640 matching lines @@
   }
   void fcvtzds(Register rd, VRegister vn) {
     ASSERT(rd != R31);
     ASSERT(rd != SP);
     const Register crd = ConcreteRegister(rd);
     EmitFPIntCvtOp(FCVTZDS, crd, static_cast<Register>(vn));
   }
   void fmovdd(VRegister vd, VRegister vn) {
     EmitFPOneSourceOp(FMOVDD, vd, vn);
   }
+  void fabsd(VRegister vd, VRegister vn) {
+    EmitFPOneSourceOp(FABSD, vd, vn);
+  }
+  void fnegd(VRegister vd, VRegister vn) {
+    EmitFPOneSourceOp(FNEGD, vd, vn);
+  }
+  void fsqrtd(VRegister vd, VRegister vn) {
+    EmitFPOneSourceOp(FSQRTD, vd, vn);
+  }
   void fldrd(VRegister vt, Address a) {
     ASSERT(a.type() != Address::PCOffset);
     EmitLoadStoreReg(FLDR, static_cast<Register>(vt), a, kDoubleWord);
   }
   void fstrd(VRegister vt, Address a) {
     ASSERT(a.type() != Address::PCOffset);
     EmitLoadStoreReg(FSTR, static_cast<Register>(vt), a, kDoubleWord);
   }
   void fcmpd(VRegister vn, VRegister vm) {
     EmitFPCompareOp(FCMPD, vn, vm);
@@ skipping 606 matching lines @@
                                   Register value,
                                   Label* no_update);
 
   DISALLOW_ALLOCATION();
   DISALLOW_COPY_AND_ASSIGN(Assembler);
 };
 
 }  // namespace dart
 
 #endif  // VM_ASSEMBLER_ARM64_H_