From ada0f6a93e1308d9d756ecd29fb86f4e8ad57d96 Mon Sep 17 00:00:00 2001
From: Rafael Espindola <rafael.espindola@gmail.com>
Date: Fri, 4 Jul 2014 15:03:17 +0000
Subject: [PATCH] Don't include llvm.metadata variables in archive symbol
 tables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212344 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Object/IRObjectFile.cpp   | 5 +++++
 test/Object/Inputs/trivial.ll | 3 +++
 test/Object/nm-archive.test   | 1 +
 3 files changed, 9 insertions(+)

diff --git a/lib/Object/IRObjectFile.cpp b/lib/Object/IRObjectFile.cpp
index 50394058a87..d01910811a6 100644
--- a/lib/Object/IRObjectFile.cpp
+++ b/lib/Object/IRObjectFile.cpp
@@ -240,6 +240,11 @@ uint32_t IRObjectFile::getSymbolFlags(DataRefImpl Symb) const {
   if (GV->hasLinkOnceLinkage() || GV->hasWeakLinkage())
     Res |= BasicSymbolRef::SF_Weak;
 
+  if (auto *Var = dyn_cast<GlobalVariable>(GV)) {
+    if (Var->getSection() == StringRef("llvm.metadata"))
+      Res |= BasicSymbolRef::SF_FormatSpecific;
+  }
+
   return Res;
 }
 
diff --git a/test/Object/Inputs/trivial.ll b/test/Object/Inputs/trivial.ll
index 25ece7611a3..622d1e97f1e 100644
--- a/test/Object/Inputs/trivial.ll
+++ b/test/Object/Inputs/trivial.ll
@@ -10,3 +10,6 @@ entry:
 declare i32 @puts(i8* nocapture) nounwind
 
 declare void @SomeOtherFunction(...)
+
+@var = global i32 0
+@llvm.used = appending global [1 x i8*] [i8* bitcast (i32* @var to i8*)], section "llvm.metadata"
diff --git a/test/Object/nm-archive.test b/test/Object/nm-archive.test
index d875d6c991c..9cb84b28d29 100644
--- a/test/Object/nm-archive.test
+++ b/test/Object/nm-archive.test
@@ -18,6 +18,7 @@ RUN: llvm-nm %t2 | FileCheck %s -check-prefix BITCODE
 BITCODE:          U SomeOtherFunction
 BITCODE-NEXT:          T main
 BITCODE-NEXT:          U puts
+BITCODE-NEXT:          D var
 
 
 Test we don't error with an archive with no symtab.