From 84397472364ac3ce3b5dbcc1e6aa93e9a584c32f Mon Sep 17 00:00:00 2001
From: Rafael Espindola <rafael.espindola@gmail.com>
Date: Tue, 5 Apr 2011 15:51:32 +0000
Subject: [PATCH] Print visibility info for external variables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128887 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/AsmPrinter/AsmPrinter.cpp | 22 ++++++++++++----------
 test/CodeGen/X86/visibility.ll        |  7 +++++--
 2 files changed, 17 insertions(+), 12 deletions(-)

diff --git a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index 358a60b355c..3d3abc2fed2 100644
--- a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -253,22 +253,24 @@ void AsmPrinter::EmitLinkage(unsigned Linkage, MCSymbol *GVSym) const {
 
 /// EmitGlobalVariable - Emit the specified global variable to the .s file.
 void AsmPrinter::EmitGlobalVariable(const GlobalVariable *GV) {
-  if (!GV->hasInitializer())   // External globals require no code.
-    return;
-
-  // Check to see if this is a special global used by LLVM, if so, emit it.
-  if (EmitSpecialLLVMGlobal(GV))
-    return;
+  if (GV->hasInitializer()) {
+    // Check to see if this is a special global used by LLVM, if so, emit it.
+    if (EmitSpecialLLVMGlobal(GV))
+      return;
 
-  if (isVerbose()) {
-    WriteAsOperand(OutStreamer.GetCommentOS(), GV,
-                   /*PrintType=*/false, GV->getParent());
-    OutStreamer.GetCommentOS() << '\n';
+    if (isVerbose()) {
+      WriteAsOperand(OutStreamer.GetCommentOS(), GV,
+                     /*PrintType=*/false, GV->getParent());
+      OutStreamer.GetCommentOS() << '\n';
+    }
   }
 
   MCSymbol *GVSym = Mang->getSymbol(GV);
   EmitVisibility(GVSym, GV->getVisibility());
 
+  if (!GV->hasInitializer())   // External globals require no extra code.
+    return;
+
   if (MAI->hasDotTypeDotSizeDirective())
     OutStreamer.EmitSymbolAttribute(GVSym, MCSA_ELF_TypeObject);
 
diff --git a/test/CodeGen/X86/visibility.ll b/test/CodeGen/X86/visibility.ll
index a8d287083a8..580c3dc9266 100644
--- a/test/CodeGen/X86/visibility.ll
+++ b/test/CodeGen/X86/visibility.ll
@@ -1,11 +1,14 @@
 ; RUN: llc -mtriple=x86_64-unknown-linux-gnu %s -o - | FileCheck %s
 
+@zed = external hidden constant i32
+
 define hidden void @foo() nounwind {
 entry:
-  call void @bar()
+  call void @bar(i32* @zed)
   ret void
 }
 
-declare hidden void @bar()
+declare hidden void @bar(i32*)
 
+;CHECK: .hidden	zed
 ;CHECK: .hidden	bar
-- 
2.11.0