Introduced Atomic8 and added no-barrier Atomic8 accessors.

src/atomicops_internals_mips_gcc.h

Index: src/atomicops_internals_mips_gcc.h
diff --git a/src/atomicops_internals_mips_gcc.h b/src/atomicops_internals_mips_gcc.h
index cb8f8b9d954e8cb37fa2d2f9c326607a846156f6..13112e024f59f8f50a5ac18217938d4d2c83b00f 100644
--- a/src/atomicops_internals_mips_gcc.h
+++ b/src/atomicops_internals_mips_gcc.h
@@ -136,6 +136,10 @@ inline Atomic32 Release_CompareAndSwap(volatile Atomic32* ptr,
   return NoBarrier_CompareAndSwap(ptr, old_value, new_value);
 }
 
+inline void NoBarrier_Store(volatile Atomic8* ptr, Atomic8 value) {
+  *ptr = value;
+}
+
 inline void NoBarrier_Store(volatile Atomic32* ptr, Atomic32 value) {
   *ptr = value;
 }
@@ -154,6 +158,10 @@ inline void Release_Store(volatile Atomic32* ptr, Atomic32 value) {
   *ptr = value;
 }
 
+inline Atomic8 NoBarrier_Load(volatile const Atomic8* ptr) {
+  return *ptr;
+}
+
 inline Atomic32 NoBarrier_Load(volatile const Atomic32* ptr) {
   return *ptr;
 }