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