Roll back r104941.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104990 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Basic/Targets.cpp b/lib/Basic/Targets.cpp
index 871bac9..92fd417 100644
--- a/lib/Basic/Targets.cpp
+++ b/lib/Basic/Targets.cpp
@@ -1272,7 +1272,7 @@
            "  unsigned fp_offset;"
            "  void* overflow_arg_area;"
            "  void* reg_save_area;"
-           "} __attribute__((adl_invisible)) __va_list_tag;"
+           "} __va_list_tag;"
            "typedef __va_list_tag __builtin_va_list[1];";
   }