Index: llvm/trunk/utils/gn/build/BUILD.gn
===================================================================
--- llvm/trunk/utils/gn/build/BUILD.gn
+++ llvm/trunk/utils/gn/build/BUILD.gn
@@ -10,6 +10,7 @@
     defines += [ "NDEBUG" ]
   }
 
+  asmflags = target_flags
   cflags = target_flags
   ldflags = target_flags + target_ldflags