DBC: Add back special case for float64 load/store

runtime/vm/intermediate_language_dbc.cc

 // Copyright (c) 2016, 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"  // Needed here to get TARGET_ARCH_DBC.
 #if defined(TARGET_ARCH_DBC)
 
 #include "vm/intermediate_language.h"
 
 #include "vm/cpu.h"
@@ skipping 708 matching lines @@
       } else {
         __ StoreIndexedUint8(array, index, value);
       }
       break;
     case kTypedDataInt32ArrayCid:
     case kTypedDataUint32ArrayCid: {
       if (IsExternal()) {
         Unsupported(compiler);
         UNREACHABLE();
       }
-      if (index_scale() != 1) {
+      if (index_scale() == 1) {
+        __ StoreIndexedUint32(array, index, value);
+      } else {
         __ ShlImm(temp, index, Utils::ShiftForPowerOfTwo(index_scale()));
-      } else {
-        __ Move(temp, index);
+        __ StoreIndexedUint32(array, temp, value);
       }
-      __ StoreIndexedUint32(array, temp, value);
       break;
     }
     case kTypedDataFloat64ArrayCid:
       if (IsExternal()) {
         Unsupported(compiler);
         UNREACHABLE();
       }
-      if (index_scale() != 1) {
+      if (index_scale() == 1) {
+        __ StoreIndexedFloat64(array, index, value);
+      } else if (index_scale() == 8) {
+        __ StoreIndexed8Float64(array, index, value);
+      } else {
         __ ShlImm(temp, index, Utils::ShiftForPowerOfTwo(index_scale()));
-      } else {
-        __ Move(temp, index);
+        __ StoreIndexedFloat64(array, temp, value);
       }
-      __ StoreIndexedFloat64(array, temp, value);
       break;
     default:
       Unsupported(compiler);
       UNREACHABLE();
       break;
   }
 }
 
 
 EMIT_NATIVE_CODE(LoadIndexed, 2, Location::RequiresRegister(),
@@ skipping 34 matching lines @@
     case kTwoByteStringCid:
       if (index_scale() != 2) {
         // TODO(zra): Fix-up index.
         Unsupported(compiler);
         UNREACHABLE();
       }
       __ LoadIndexedTwoByteString(result, array, index);
       break;
     case kTypedDataInt32ArrayCid:
       ASSERT(representation() == kUnboxedInt32);
-      if (index_scale() != 1) {
+      if (index_scale() == 1) {
+        __ LoadIndexedInt32(result, array, index);
+      } else {
         __ ShlImm(temp, index, Utils::ShiftForPowerOfTwo(index_scale()));
-      } else {
-        __ Move(temp, index);
+        __ LoadIndexedInt32(result, array, temp);
       }
-      __ LoadIndexedInt32(result, array, temp);
       break;
     case kTypedDataUint32ArrayCid:
       ASSERT(representation() == kUnboxedUint32);
-      if (index_scale() != 1) {
+      if (index_scale() == 1) {
+        __ LoadIndexedUint32(result, array, index);
+      } else {
         __ ShlImm(temp, index, Utils::ShiftForPowerOfTwo(index_scale()));
-      } else {
-        __ Move(temp, index);
+        __ LoadIndexedUint32(result, array, temp);
       }
-      __ LoadIndexedUint32(result, array, temp);
       break;
     case kTypedDataFloat64ArrayCid:
-      if (index_scale() != 1) {
+      if (index_scale() == 1) {
+        __ LoadIndexedFloat64(result, array, index);
+      } else if (index_scale() == 8) {
+        __ LoadIndexed8Float64(result, array, index);
+      } else {
         __ ShlImm(temp, index, Utils::ShiftForPowerOfTwo(index_scale()));
-      } else {
-        __ Move(temp, index);
+        __ LoadIndexedFloat64(result, array, temp);
       }
-      __ LoadIndexedFloat64(result, array, temp);
       break;
     default:
       Unsupported(compiler);
       UNREACHABLE();
       break;
   }
 }
 
 
 EMIT_NATIVE_CODE(StringInterpolate,
@@ skipping 899 matching lines @@
   __ IfULe(length, index);
   compiler->EmitDeopt(deopt_id(),
                       ICData::kDeoptCheckArrayBound,
                       (generalized_ ? ICData::kGeneralized : 0) |
                       (licm_hoisted_ ? ICData::kHoisted : 0));
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_DBC