Index: compiler-rt/lib/builtins/cpu_model.c
===================================================================
--- compiler-rt/lib/builtins/cpu_model.c
+++ compiler-rt/lib/builtins/cpu_model.c
@@ -594,6 +594,9 @@
 
 int __cpu_indicator_init(void) CONSTRUCTOR_ATTRIBUTE;
 
+#ifndef _WIN32
+__attribute__((visibility("hidden")))
+#endif
 struct __processor_model {
   unsigned int __cpu_vendor;
   unsigned int __cpu_type;