b2cc2c344e
This CL added a tblgen::Type class to wrap around raw TableGen Record getValue*() calls on Type defs, which will provide a nicer API for handling TableGen Record. The PredCNF class is also updated to work together with tblgen::Type. PiperOrigin-RevId: 228429090
69 lines
2.2 KiB
C++
69 lines
2.2 KiB
C++
//===- Predicate.cpp - Predicate 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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// Wrapper around predicates defined in TableGen.
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//
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//===----------------------------------------------------------------------===//
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#include "mlir/TableGen/Predicate.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/Support/FormatVariadic.h"
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#include "llvm/TableGen/Error.h"
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#include "llvm/TableGen/Record.h"
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using namespace mlir;
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PredCNF::PredCNF(const llvm::Init *init) : def(nullptr) {
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if (const auto *defInit = dyn_cast<llvm::DefInit>(init)) {
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def = defInit->getDef();
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assert(def->isSubClassOf("PredCNF") &&
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"must be subclass of TableGen 'PredCNF' class");
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}
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}
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const llvm::ListInit *PredCNF::getConditions() const {
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if (!def)
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return nullptr;
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return def->getValueAsListInit("conditions");
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}
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std::string PredCNF::createTypeMatcherTemplate() const {
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const auto *conjunctiveList = getConditions();
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if (!conjunctiveList)
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return "true";
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std::string outString;
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llvm::raw_string_ostream ss(outString);
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bool firstDisjunctive = true;
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for (auto disjunctiveInit : *conjunctiveList) {
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ss << (firstDisjunctive ? "(" : " && (");
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firstDisjunctive = false;
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bool firstConjunctive = true;
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for (auto atom : *cast<llvm::ListInit>(disjunctiveInit)) {
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auto predAtom = cast<llvm::DefInit>(atom)->getDef();
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ss << (firstConjunctive ? "" : " || ")
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<< (predAtom->getValueAsBit("negated") ? "!" : "")
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<< predAtom->getValueAsString("predCall");
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firstConjunctive = false;
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}
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ss << ")";
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}
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ss.flush();
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return outString;
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}
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