From 5f970cc5558095132ec4370c37d8465c5de5ed46 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Mon, 5 Jan 2009 18:12:21 +0000
Subject: [PATCH] allow opaque undefs.  This resolves PR3282 and fixes
 test/Assembler/2005-05-05-OpaqueUndefValues.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61719 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/AsmParser/LLParser.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/AsmParser/LLParser.cpp b/lib/AsmParser/LLParser.cpp
index 8a686ce2f83..da8cb4da23e 100644
--- a/lib/AsmParser/LLParser.cpp
+++ b/lib/AsmParser/LLParser.cpp
@@ -1913,7 +1913,8 @@ bool LLParser::ConvertGlobalValIDToValue(const Type *Ty, ValID &ID,
     return false;
   case ValID::t_Undef:
     // FIXME: LabelTy should not be a first-class type.
-    if (!Ty->isFirstClassType() || Ty == Type::LabelTy)
+    if ((!Ty->isFirstClassType() || Ty == Type::LabelTy) &&
+        !isa<OpaqueType>(Ty))
       return Error(ID.Loc, "invalid type for undef constant");
     V = UndefValue::get(Ty);
     return false;
-- 
2.11.0