From: Joerg Sonnenberger <joerg@bec.de>
Date: Thu, 17 Feb 2011 23:22:19 +0000 (+0000)
Subject: Check that MnemonicAlias doesn't map back to the same string.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=6ef6ceda6883d0ee543d8da86d16b0fcdcecab96;p=oota-llvm.git

Check that MnemonicAlias doesn't map back to the same string.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125792 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/utils/TableGen/AsmMatcherEmitter.cpp b/utils/TableGen/AsmMatcherEmitter.cpp
index 35f5f6facc4..e3def418523 100644
--- a/utils/TableGen/AsmMatcherEmitter.cpp
+++ b/utils/TableGen/AsmMatcherEmitter.cpp
@@ -1881,6 +1881,8 @@ static bool EmitMnemonicAliases(raw_ostream &OS, const AsmMatcherInfo &Info) {
         AliasWithNoPredicate = i;
         continue;
       }
+      if (R->getValueAsString("ToMnemonic") == I->first)
+        throw TGError(R->getLoc(), "MnemonicAlias to the same string");
 
       if (!MatchCode.empty())
         MatchCode += "else ";