From 0b6c926856fe6de3ab2180bdcfd642d9342cd163 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Thu, 18 Mar 2010 21:07:51 +0000
Subject: [PATCH] disallow concatenation of two dags with different operators.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98871 91177308-0d34-0410-b5e6-96231b3b80d8
---
 utils/TableGen/Record.cpp | 14 ++------------
 1 file changed, 2 insertions(+), 12 deletions(-)

diff --git a/utils/TableGen/Record.cpp b/utils/TableGen/Record.cpp
index f9e2fe8a397..b9facb4c2a6 100644
--- a/utils/TableGen/Record.cpp
+++ b/utils/TableGen/Record.cpp
@@ -646,18 +646,8 @@ Init *BinOpInit::Fold(Record *CurRec, MultiClass *CurMultiClass) {
     if (LHSs && RHSs) {
       DefInit *LOp = dynamic_cast<DefInit*>(LHSs->getOperator());
       DefInit *ROp = dynamic_cast<DefInit*>(RHSs->getOperator());
-      if (LOp->getDef() != ROp->getDef()) {
-        bool LIsOps =
-          LOp->getDef()->getName() == "outs" ||
-          LOp->getDef()->getName() != "ins" ||
-          LOp->getDef()->getName() != "defs";
-        bool RIsOps =
-          ROp->getDef()->getName() == "outs" ||
-          ROp->getDef()->getName() != "ins" ||
-          ROp->getDef()->getName() != "defs";
-        if (!LIsOps || !RIsOps)
-          throw "Concated Dag operators do not match!";
-      }
+      if (LOp == 0 || ROp == 0 || LOp->getDef() != ROp->getDef())
+        throw "Concated Dag operators do not match!";
       std::vector<Init*> Args;
       std::vector<std::string> ArgNames;
       for (unsigned i = 0, e = LHSs->getNumArgs(); i != e; ++i) {