WIP Atomics

src/compiler/machine-operator.cc

Index: src/compiler/machine-operator.cc
diff --git a/src/compiler/machine-operator.cc b/src/compiler/machine-operator.cc
index 07bcf3f77f1b208a2c7dc8c655151aede2d0b084..247b01eaf326a55a40370ba698f7a4e8ca48baf6 100644
--- a/src/compiler/machine-operator.cc
+++ b/src/compiler/machine-operator.cc
@@ -200,8 +200,16 @@ struct MachineOperatorGlobalCache {
               IrOpcode::kCheckedLoad, Operator::kNoThrow | Operator::kNoWrite, \
               "CheckedLoad", 3, 1, 1, 1, 1, 0, k##Type) {}                     \
   };                                                                           \
+  struct LoadAtomic##Type##Operator final                                      \
+      : public Operator1<LoadRepresentation> {                                 \
+    LoadAtomic##Type##Operator()                                               \
+        : Operator1<LoadRepresentation>(                                       \
+              IrOpcode::kLoadAtomic, Operator::kNoThrow | Operator::kNoWrite,  \
+              "LoadAtomic", 2, 1, 1, 1, 1, 0, k##Type) {}                      \
+  };                                                                           \
   Load##Type##Operator kLoad##Type;                                            \
-  CheckedLoad##Type##Operator kCheckedLoad##Type;
+  CheckedLoad##Type##Operator kCheckedLoad##Type;                              \
+  LoadAtomic##Type##Operator kLoadAtomic##Type;
   MACHINE_TYPE_LIST(LOAD)
 #undef LOAD
 
@@ -273,6 +281,23 @@ const Operator* MachineOperatorBuilder::Load(LoadRepresentation rep) {
 }
 
 
+const Operator* MachineOperatorBuilder::LoadAtomic(LoadRepresentation rep) {
+  switch (rep) {
+#define LOAD(Type) \
+  case k##Type:    \
+    return &cache_.kLoadAtomic##Type;
+    MACHINE_TYPE_LIST(LOAD)
+#undef LOAD
+    default:
+      break;
+  }
+  // Uncached.
+  return new (zone_) Operator1<LoadRepresentation>(  // --
+      IrOpcode::kLoad, Operator::kNoThrow | Operator::kNoWrite, "LoadAtomic", 2,
+      1, 1, 1, 1, 0, rep);
+}
+
+
 const Operator* MachineOperatorBuilder::Store(StoreRepresentation rep) {
   switch (rep.machine_type()) {
 #define STORE(Type)                                      \