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//===- Constraint.cpp - Constraint class ----------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Constraint wrapper to simplify using TableGen Record for constraints.
//
//===----------------------------------------------------------------------===//
#include "mlir/TableGen/Constraint.h"
#include "llvm/TableGen/Record.h"
using namespace mlir;
using namespace mlir::tblgen;
Constraint::Constraint(const llvm::Record *record)
: def(record), kind(CK_Uncategorized) {
// Look through OpVariable's to their constraint.
if (def->isSubClassOf("OpVariable"))
def = def->getValueAsDef("constraint");
if (def->isSubClassOf("TypeConstraint")) {
kind = CK_Type;
} else if (def->isSubClassOf("AttrConstraint")) {
kind = CK_Attr;
} else if (def->isSubClassOf("RegionConstraint")) {
kind = CK_Region;
} else if (def->isSubClassOf("SuccessorConstraint")) {
kind = CK_Successor;
} else {
assert(def->isSubClassOf("Constraint"));
}
}
Constraint::Constraint(Kind kind, const llvm::Record *record)
: def(record), kind(kind) {
// Look through OpVariable's to their constraint.
if (def->isSubClassOf("OpVariable"))
def = def->getValueAsDef("constraint");
}
Pred Constraint::getPredicate() const {
auto *val = def->getValue("predicate");
// If no predicate is specified, then return the null predicate (which
// corresponds to true).
if (!val)
return Pred();
const auto *pred = dyn_cast<llvm::DefInit>(val->getValue());
return Pred(pred);
}
std::string Constraint::getConditionTemplate() const {
return getPredicate().getCondition();
}
StringRef Constraint::getSummary() const {
if (Optional<StringRef> summary = def->getValueAsOptionalString("summary"))
return *summary;
return def->getName();
}
AppliedConstraint::AppliedConstraint(Constraint &&constraint,
llvm::StringRef self,
std::vector<std::string> &&entities)
: constraint(constraint), self(std::string(self)),
entities(std::move(entities)) {}
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