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[TableGen] Make an error message slightly more informative 

Reviewers: ab, spop, stoklund

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D19192

llvm-svn: 266823
This commit is contained in:
Nicolai Haehnle 2016-04-19 21:58:10 +00:00
parent 967f94253b
commit 152c18e9ac
1 changed files with 9 additions and 2 deletions
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11
llvm/utils/TableGen/CodeGenDAGPatterns.cpp
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@ -2974,9 +2974,16 @@ const DAGInstruction &CodeGenDAGPatterns::parseInstructionPattern(
// fill in the InstResults map.
for (unsigned j = 0, e = I->getNumTrees(); j != e; ++j) {
TreePatternNode *Pat = I->getTree(j);
if (Pat->getNumTypes() != 0)
if (Pat->getNumTypes() != 0) {
std::string Types;
for (unsigned k = 0, ke = Pat->getNumTypes(); k != ke; ++k) {
if (k > 0)
Types += ", ";
Types += Pat->getExtType(k).getName();
}
I->error("Top-level forms in instruction pattern should have"
" void types");
" void types, has types " + Types);
}
// Find inputs and outputs, and verify the structure of the uses/defs.
FindPatternInputsAndOutputs(I, Pat, InstInputs, InstResults,