Adds single-precision and SIMD load/store to arm64.

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 201 matching lines @@
 enum OperandSize {
   kByte,
   kUnsignedByte,
   kHalfword,
   kUnsignedHalfword,
   kWord,
   kUnsignedWord,
   kDoubleWord,
   kSWord,
   kDWord,
+  kQWord,
 };
 
 static inline int Log2OperandSizeBytes(OperandSize os) {
   switch (os) {
     case kByte:
     case kUnsignedByte:
       return 0;
     case kHalfword:
     case kUnsignedHalfword:
       return 1;
     case kWord:
     case kUnsignedWord:
     case kSWord:
       return 2;
     case kDoubleWord:
     case kDWord:
       return 3;
+    case kQWord:
+      return 4;
     default:
       UNREACHABLE();
       break;
   }
   return -1;
 }
 
+static inline bool IsSignedOperand(OperandSize os) {
+  switch (os) {
+    case kByte:
+    case kHalfword:
+    case kWord:
+      return true;
+    case kUnsignedByte:
+    case kUnsignedHalfword:
+    case kUnsignedWord:
+    case kDoubleWord:
+    case kSWord:
+    case kDWord:
+    case kQWord:
+      return false;
+    default:
+      UNREACHABLE();
+      break;
+  }
+  return false;
+}
+
 // Opcodes from C3
 // C3.1.
 enum MainOp {
   DPImmediateMask = 0x1c000000,
   DPImmediateFixed = B28,
 
   CompareBranchMask = 0x1c000000,
   CompareBranchFixed = B28 | B26,
 
   LoadStoreMask = B27 | B25,
@@ skipping 74 matching lines @@
   LoadRegLiteralFixed = LoadStoreFixed | B28,
   LDRpc = LoadRegLiteralFixed,
 };
 
 // C3.3.7-10
 enum LoadStoreRegOp {
   LoadStoreRegMask = 0x3a000000,
   LoadStoreRegFixed = LoadStoreFixed | B29 | B28,
   STR = LoadStoreRegFixed,
   LDR = LoadStoreRegFixed | B22,
+  LDRS = LoadStoreRegFixed | B23,
   FSTR = STR | B26,
   FLDR = LDR | B26,
+  FSTRQ = STR | B26 | B23,
+  FLDRQ = LDR | B26 | B23,
 };
 
 // C3.4.1
 enum AddSubImmOp {
   AddSubImmMask = 0x1f000000,
   AddSubImmFixed = DPImmediateFixed | B24,
   ADDI = AddSubImmFixed,
   SUBI = AddSubImmFixed | B30,
 };
 
@@ skipping 83 matching lines @@
 };
 
 // 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,
+  FCVTDS = FPOneSourceFixed | B15 | B17,
+  FCVTSD = FPOneSourceFixed | B22 | B17,
 };
 
 // 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_