Introduced Atomic8 and added no-barrier Atomic8 accessors.

test/cctest/test-atomicops.cc

Index: test/cctest/test-atomicops.cc
diff --git a/test/cctest/test-atomicops.cc b/test/cctest/test-atomicops.cc
index eba956c859c08c6d6710c68df5dad4e9e6f2064c..53df22963dd3e48da2d50ed09e1c2d22305dd3b4 100644
--- a/test/cctest/test-atomicops.cc
+++ b/test/cctest/test-atomicops.cc
@@ -214,6 +214,21 @@ static void TestStore() {
 }
 
 
+// Merge this test with TestStore as soon as we have Atomic8 acquire
+// and release stores.
+static void TestStoreAtomic8() {
+  const Atomic8 kVal1 = TestFillValue<Atomic8>();
+  const Atomic8 kVal2 = static_cast<Atomic8>(-1);
+
+  Atomic8 value;
+
+  NoBarrier_Store(&value, kVal1);
+  CHECK_EQU(kVal1, value);
+  NoBarrier_Store(&value, kVal2);
+  CHECK_EQU(kVal2, value);
+}
+
+
 // This is a simple sanity check to ensure that values are correct.
 // Not testing atomicity.
 template <class AtomicType>
@@ -240,6 +255,21 @@ static void TestLoad() {
 }
 
 
+// Merge this test with TestLoad as soon as we have Atomic8 acquire
+// and release loads.
+static void TestLoadAtomic8() {
+  const Atomic8 kVal1 = TestFillValue<Atomic8>();
+  const Atomic8 kVal2 = static_cast<Atomic8>(-1);
+
+  Atomic8 value;
+
+  value = kVal1;
+  CHECK_EQU(kVal1, NoBarrier_Load(&value));
+  value = kVal2;
+  CHECK_EQU(kVal2, NoBarrier_Load(&value));
+}
+
+
 TEST(AtomicIncrement) {
   TestAtomicIncrement<Atomic32>();
   TestAtomicIncrement<AtomicWord>();
@@ -265,12 +295,14 @@ TEST(AtomicIncrementBounds) {
 
 
 TEST(Store) {
+  TestStoreAtomic8();
   TestStore<Atomic32>();
   TestStore<AtomicWord>();
 }
 
 
 TEST(Load) {
+  TestLoadAtomic8();
   TestLoad<Atomic32>();
   TestLoad<AtomicWord>();
 }