From c812261221040ac991f0c9710036a079f208281e Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Sun, 28 Mar 2010 06:04:39 +0000
Subject: [PATCH] SDTCisVT<0, isVoid> is not valid, reject it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99744 91177308-0d34-0410-b5e6-96231b3b80d8
---
 utils/TableGen/CodeGenDAGPatterns.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/utils/TableGen/CodeGenDAGPatterns.cpp b/utils/TableGen/CodeGenDAGPatterns.cpp
index 94e3c24b254..0f17f924a36 100644
--- a/utils/TableGen/CodeGenDAGPatterns.cpp
+++ b/utils/TableGen/CodeGenDAGPatterns.cpp
@@ -524,6 +524,9 @@ SDTypeConstraint::SDTypeConstraint(Record *R) {
   if (R->isSubClassOf("SDTCisVT")) {
     ConstraintType = SDTCisVT;
     x.SDTCisVT_Info.VT = getValueType(R->getValueAsDef("VT"));
+    if (x.SDTCisVT_Info.VT == MVT::isVoid)
+      throw TGError(R->getLoc(), "Cannot use 'Void' as type to SDTCisVT");
+      
   } else if (R->isSubClassOf("SDTCisPtrTy")) {
     ConstraintType = SDTCisPtrTy;
   } else if (R->isSubClassOf("SDTCisInt")) {