WIP Atomics

src/compiler/simplified-lowering.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/simplified-lowering.h"
 
 #include <limits>
 
 #include "src/base/bits.h"
 #include "src/code-factory.h"
@@ skipping 837 matching lines @@
       }
       case IrOpcode::kLoadElement: {
         ElementAccess access = ElementAccessOf(node->op());
         ProcessInput(node, 0, changer_->TypeForBasePointer(access));  // base
         ProcessInput(node, 1, kMachInt32);                            // index
         ProcessRemainingInputs(node, 2);
         SetOutput(node, access.machine_type);
         if (lower()) lowering->DoLoadElement(node);
         break;
       }
+      case IrOpcode::kLoadElementAtomic: {
+        ElementAccess access = ElementAccessOf(node->op());
+        ProcessInput(node, 0, changer_->TypeForBasePointer(access));  // base
+        ProcessInput(node, 1, kMachInt32);                            // index
+        ProcessRemainingInputs(node, 2);
+        SetOutput(node, access.machine_type);
+        if (lower()) lowering->DoLoadElementAtomic(node);
+        break;
+      }
       case IrOpcode::kStoreElement: {
         ElementAccess access = ElementAccessOf(node->op());
         ProcessInput(node, 0, changer_->TypeForBasePointer(access));  // base
         ProcessInput(node, 1, kMachInt32);                            // index
         ProcessInput(node, 2, access.machine_type);                   // value
         ProcessRemainingInputs(node, 3);
         SetOutput(node, 0);
         if (lower()) lowering->DoStoreElement(node);
         break;
       }
@@ skipping 425 matching lines @@
 }
 
 
 void SimplifiedLowering::DoLoadElement(Node* node) {
   const ElementAccess& access = ElementAccessOf(node->op());
   node->set_op(machine()->Load(access.machine_type));
   node->ReplaceInput(1, ComputeIndex(access, node->InputAt(1)));
 }
 
 
+void SimplifiedLowering::DoLoadElementAtomic(Node* node) {
+  const ElementAccess& access = ElementAccessOf(node->op());
+  node->set_op(machine()->LoadAtomic(access.machine_type));
+  node->ReplaceInput(1, ComputeIndex(access, node->InputAt(1)));
+}
+
+
 void SimplifiedLowering::DoStoreElement(Node* node) {
   const ElementAccess& access = ElementAccessOf(node->op());
   Type* type = NodeProperties::GetBounds(node->InputAt(2)).upper;
   node->set_op(machine()->Store(
       StoreRepresentation(access.machine_type,
                           ComputeWriteBarrierKind(access.base_is_tagged,
                                                   access.machine_type, type))));
   node->ReplaceInput(1, ComputeIndex(access, node->InputAt(1)));
 }
 
@@ skipping 298 matching lines @@
 
 void SimplifiedLowering::DoStringLessThanOrEqual(Node* node) {
   node->set_op(machine()->IntLessThanOrEqual());
   node->ReplaceInput(0, StringComparison(node, true));
   node->ReplaceInput(1, jsgraph()->SmiConstant(EQUAL));
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8