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[TableGen] more helpful error message in MapTableEmitter

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Differential Revision: http://reviews.llvm.org/D17275

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@263148 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nicolai Haehnle 2016-03-10 18:51:58 +00:00
parent b738b28f97
commit 5dae380620
1 changed files with 12 additions and 2 deletions
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14
utils/TableGen/CodeGenMapTable.cpp
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@ -337,10 +337,20 @@ Record *MapTableEmitter::getInstrForColumn(Record *KeyInstr,
}
if (MatchFound) {
if (MatchInstr) // Already had a match
if (MatchInstr) {
// Already had a match
// Error if multiple matches are found for a column.
std::string KeyValueStr;
for (Init *Value : KeyValue) {
if (!KeyValueStr.empty())
KeyValueStr += ", ";
KeyValueStr += Value->getAsString();
}
PrintFatalError("Multiple matches found for `" + KeyInstr->getName() +
"', for the relation `" + InstrMapDesc.getName());
"', for the relation `" + InstrMapDesc.getName() + "', row fields [" +
KeyValueStr + "], column `" + CurValueCol->getAsString() + "'");
}
MatchInstr = CurInstr;
}
}