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Validate that the input to 'Pat' patterns is sane.

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llvm-svn: 24393
This commit is contained in:
Chris Lattner 2005-11-17 17:43:52 +00:00
parent 789cdc4b29
commit 6b83dcf750
1 changed files with 8 additions and 0 deletions
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8
utils/TableGen/DAGISelEmitter.cpp
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@ -1212,6 +1212,14 @@ void DAGISelEmitter::ParsePatterns() {
// never do anything with this pattern: report it to the user.
if (!Pattern->InferAllTypes())
Pattern->error("Could not infer all types in pattern!");
// Validate that the input pattern is correct.
{
std::map<std::string, TreePatternNode*> InstInputs;
std::map<std::string, Record*> InstResults;
FindPatternInputsAndOutputs(Pattern, Pattern->getOnlyTree(),
InstInputs, InstResults);
}
ListInit *LI = Patterns[i]->getValueAsListInit("ResultInstrs");
if (LI->getSize() == 0) continue; // no pattern.