From: Dan Gohman <gohman@apple.com>
Date: Tue, 24 Aug 2010 14:35:45 +0000 (+0000)
Subject: Add a comment explaining why this code doesn't just call
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=6826114d6e10725d122dca9352dc2d99a0f693e9;p=oota-llvm.git

Add a comment explaining why this code doesn't just call
ParseMetadataValue.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111914 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/AsmParser/LLParser.cpp b/lib/AsmParser/LLParser.cpp
index 0eb1b70c3f2..7766ad61da1 100644
--- a/lib/AsmParser/LLParser.cpp
+++ b/lib/AsmParser/LLParser.cpp
@@ -1134,6 +1134,10 @@ bool LLParser::ParseInstructionMetadata(Instruction *Inst,
     if (ParseToken(lltok::exclaim, "expected '!' here"))
       return true;
 
+    // This code is similar to that of ParseMetadataValue, however it needs to
+    // have special-case code for a forward reference; see the comments on
+    // ForwardRefInstMetadata for details. Also, MDStrings are not supported
+    // at the top level here.
     if (Lex.getKind() == lltok::lbrace) {
       ValID ID;
       if (ParseMetadataListValue(ID, PFS))