Make the -fvisibility-inlines-hidden check more thorough in a hopeless attempt to fix mingw cross-compiles.

llvm-svn: 147191

llvm/autoconf/m4/visibility_inlines_hidden.m4

@@ -9,7 +9,9 @@ AC_DEFUN([AC_CXX_USE_VISIBILITY_INLINES_HIDDEN],
 [ AC_LANG_PUSH([C++])
   oldcxxflags="$CXXFLAGS"
   CXXFLAGS="$CXXFLAGS -fvisibility-inlines-hidden"
-  AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],
+  AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
+    [template <typename T> struct X { inline void f() {} };],
+    [X<int>().f();])],
     [llvm_cv_cxx_visibility_inlines_hidden=yes],[llvm_cv_cxx_visibility_inlines_hidden=no])
   CXXFLAGS="$oldcxxflags"
   AC_LANG_POP([C++])

llvm/configure

@@ -20993,11 +20993,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-
+template <typename T> struct X { inline void f() {} };
 int
 main ()
 {
-
+X<int>().f();
   ;
   return 0;
 }