Rework PNaCl memory ordering

include/llvm/IR/Intrinsics.td

Index: include/llvm/IR/Intrinsics.td
diff --git a/include/llvm/IR/Intrinsics.td b/include/llvm/IR/Intrinsics.td
index 15567eb2dba29bf86a86f32f6fea3eef95217a62..c82051ae7da03b4e51c30952ff190c98d607f81d 100644
--- a/include/llvm/IR/Intrinsics.td
+++ b/include/llvm/IR/Intrinsics.td
@@ -526,6 +526,8 @@ def int_nacl_atomic_cmpxchg : Intrinsic<[llvm_anyint_ty],
     [IntrReadWriteArgMem]>;
 def int_nacl_atomic_fence : Intrinsic<[], [llvm_i32_ty],
     [IntrReadWriteArgMem]>;
+def int_nacl_atomic_fence_all : Intrinsic<[], [],
+    [IntrReadWriteArgMem]>;
 def int_nacl_atomic_is_lock_free : Intrinsic<[llvm_i1_ty],
     [llvm_i32_ty, llvm_ptr_ty], [IntrNoMem]>,
     GCCBuiltin<"__nacl_atomic_is_lock_free">;