From a562dc7228990797a259f4fef4acb95a83b23e0d Mon Sep 17 00:00:00 2001
From: Jim Grosbach <grosbach@apple.com>
Date: Wed, 12 Sep 2012 17:40:25 +0000
Subject: [PATCH] TableGen: Convert an assert() to a proper diagnostic.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163726 91177308-0d34-0410-b5e6-96231b3b80d8
---
 utils/TableGen/AsmMatcherEmitter.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/utils/TableGen/AsmMatcherEmitter.cpp b/utils/TableGen/AsmMatcherEmitter.cpp
index 78eb6418993..fcd32dc8716 100644
--- a/utils/TableGen/AsmMatcherEmitter.cpp
+++ b/utils/TableGen/AsmMatcherEmitter.cpp
@@ -1020,7 +1020,9 @@ AsmMatcherInfo::getOperandClass(Record *Rec, int SubOpIdx) {
     throw TGError(Rec->getLoc(), "register class has no class info!");
   }
 
-  assert(Rec->isSubClassOf("Operand") && "Unexpected operand!");
+  if (!Rec->isSubClassOf("Operand"))
+    throw TGError(Rec->getLoc(), "Operand `" + Rec->getName() +
+                  "' does not derive from class Operand!\n");
   Record *MatchClass = Rec->getValueAsDef("ParserMatchClass");
   if (ClassInfo *CI = AsmOperandClasses[MatchClass])
     return CI;