add support for hidden visibility to darwin/x86

llvm-svn: 33198
diff --git a/llvm/lib/Target/X86/X86AsmPrinter.cpp b/llvm/lib/Target/X86/X86AsmPrinter.cpp
index 396d90c..78b1af2 100644
--- a/llvm/lib/Target/X86/X86AsmPrinter.cpp
+++ b/llvm/lib/Target/X86/X86AsmPrinter.cpp
@@ -246,8 +246,9 @@
       EmitGlobalConstant(C);
       O << '\n';
     }
-    if (I->hasHiddenVisibility() && !Subtarget->isTargetDarwin())
-      O << "\t.hidden " << name << "\n";
+    if (I->hasHiddenVisibility())
+      if (const char *Directive = TAI->getHiddenDirective())
+        O << Directive << name << "\n";
   }
   
   // Output linker support code for dllexported globals