From: Kevin Enderby <enderby@apple.com>
Date: Fri, 15 Jul 2011 18:30:43 +0000 (+0000)
Subject: Have tblgen produce code that tolerates operands that return an invalid match class.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=893818347e9d7b34ea99ae9c984934c9b6bf92da;p=oota-llvm.git

Have tblgen produce code that tolerates operands that return an invalid match class.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135287 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/utils/TableGen/AsmMatcherEmitter.cpp b/utils/TableGen/AsmMatcherEmitter.cpp
index d9c3b84d6c2..a6a4fecd301 100644
--- a/utils/TableGen/AsmMatcherEmitter.cpp
+++ b/utils/TableGen/AsmMatcherEmitter.cpp
@@ -1656,6 +1656,10 @@ static void EmitValidateOperandClass(AsmMatcherInfo &Info,
   OS << "  " << Info.Target.getName() << "Operand &Operand = *("
      << Info.Target.getName() << "Operand*)GOp;\n";
 
+  // The InvalidMatchClass is not to match any operand.
+  OS << "  if (Kind == InvalidMatchClass)\n";
+  OS << "    return false;\n\n";
+
   // Check for Token operands first.
   OS << "  if (Operand.isToken())\n";
   OS << "    return MatchTokenString(Operand.getToken()) == Kind;\n\n";