From 35303fd739705b9167fb2596175e5cb397921566 Mon Sep 17 00:00:00 2001
From: "Duncan P. N. Exon Smith" <dexonsmith@apple.com>
Date: Sat, 6 Dec 2014 02:29:44 +0000
Subject: IR: Disallow function-local metadata attachments

Metadata attachments to instructions cannot be function-local.

This is part of PR21532.

llvm-svn: 223574
---
 llvm/lib/AsmParser/LLParser.cpp | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'llvm/lib/AsmParser/LLParser.cpp')

diff --git a/llvm/lib/AsmParser/LLParser.cpp b/llvm/lib/AsmParser/LLParser.cpp
index 93eb490619f..f44af673fcd 100644
--- a/llvm/lib/AsmParser/LLParser.cpp
+++ b/llvm/lib/AsmParser/LLParser.cpp
@@ -62,6 +62,8 @@ bool LLParser::ValidateEndOfModule() {
             NumberedMetadata[SlotNo] == nullptr)
           return Error(MDList[i].Loc, "use of undefined metadata '!" +
                        Twine(SlotNo) + "'");
+        assert(!NumberedMetadata[SlotNo]->isFunctionLocal() &&
+               "Unexpected function-local metadata");
         Inst->setMetadata(MDList[i].MDKind, NumberedMetadata[SlotNo]);
       }
     }
@@ -1529,6 +1531,8 @@ bool LLParser::ParseInstructionMetadata(Instruction *Inst,
       if (ParseMetadataListValue(ID, PFS))
         return true;
       assert(ID.Kind == ValID::t_MDNode);
+      if (ID.MDNodeVal->isFunctionLocal())
+        return TokError("unexpected function-local metadata");
       Inst->setMetadata(MDK, ID.MDNodeVal);
     } else {
       unsigned NodeID = 0;
-- 
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