From: Mikhail Glushenkov <foldr@codedgers.com>
Date: Sun, 7 Dec 2008 16:45:12 +0000 (+0000)
Subject: Better error message.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=ad889a7f8822184e5c3a979dabefce999cd88fda;p=oota-llvm.git

Better error message.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60664 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/utils/TableGen/LLVMCConfigurationEmitter.cpp b/utils/TableGen/LLVMCConfigurationEmitter.cpp
index fa423f4ec85..eda45c7a7b7 100644
--- a/utils/TableGen/LLVMCConfigurationEmitter.cpp
+++ b/utils/TableGen/LLVMCConfigurationEmitter.cpp
@@ -584,7 +584,12 @@ private:
 
   void onActions (const DagInit* d) {
     checkNumberOfArguments(d, 1);
-    toolDesc_.Actions = d->getArg(0);
+    Init* Case = d->getArg(0);
+    if (typeid(*Case) != typeid(DagInit) ||
+        static_cast<DagInit*>(Case)->getOperator()->getAsString() != "case")
+      throw
+        std::string("The argument to (actions) should be a 'case' construct!");
+    toolDesc_.Actions = Case;
   }
 
   void onCmdLine (const DagInit* d) {