forked from OSchip/llvm-project
70 lines
2.3 KiB
C++
70 lines
2.3 KiB
C++
//===- Constraint.cpp - Constraint class ----------------------------------===//
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//
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// Copyright 2019 The MLIR Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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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 "mlir/TableGen/Constraint.h"
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#include "llvm/TableGen/Record.h"
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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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if (record->isSubClassOf("TypeConstraint")) {
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kind = CK_Type;
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} else if (record->isSubClassOf("AttrConstraint")) {
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kind = CK_Attr;
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} else if (record->isSubClassOf("RegionConstraint")) {
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kind = CK_Region;
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} else {
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assert(record->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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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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llvm::StringRef Constraint::getDescription() const {
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auto doc = def->getValueAsString("description");
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if (doc.empty())
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return def->getName();
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return doc;
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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(self), entities(std::move(entities)) {}
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