forked from OSchip/llvm-project
154 lines
4.9 KiB
C++
154 lines
4.9 KiB
C++
//===- Attribute.cpp - Attribute wrapper class ------------------*- C++ -*-===//
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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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// Attribute wrapper to simplify using TableGen Record defining a MLIR
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// Attribute.
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//
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//===----------------------------------------------------------------------===//
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#include "mlir/TableGen/Operator.h"
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#include "llvm/Support/FormatVariadic.h"
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#include "llvm/TableGen/Record.h"
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using namespace mlir;
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// Returns the initializer's value as string if the given TableGen initializer
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// is a code or string initializer. Returns the empty StringRef otherwise.
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static StringRef getValueAsString(const llvm::Init *init) {
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if (const auto *code = dyn_cast<llvm::CodeInit>(init))
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return code->getValue().trim();
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else if (const auto *str = dyn_cast<llvm::StringInit>(init))
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return str->getValue().trim();
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return {};
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}
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tblgen::AttrConstraint::AttrConstraint(const llvm::Record *record)
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: def(record) {
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assert(def->isSubClassOf("AttrConstraint") &&
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"must be subclass of TableGen 'AttrConstraint' class");
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}
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tblgen::AttrConstraint::AttrConstraint(const llvm::DefInit *init)
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: AttrConstraint(init->getDef()) {}
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tblgen::Pred tblgen::AttrConstraint::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 tblgen::AttrConstraint::getConditionTemplate() const {
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return getPredicate().getCondition();
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}
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StringRef tblgen::AttrConstraint::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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tblgen::Attribute::Attribute(const llvm::Record *record)
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: AttrConstraint(record) {
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assert(record->isSubClassOf("Attr") &&
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"must be subclass of TableGen 'Attr' class");
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}
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tblgen::Attribute::Attribute(const llvm::DefInit *init)
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: AttrConstraint(init->getDef()) {}
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bool tblgen::Attribute::isDerivedAttr() const {
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return def->isSubClassOf("DerivedAttr");
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}
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bool tblgen::Attribute::hasStorageType() const {
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const auto *init = def->getValueInit("storageType");
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return !getValueAsString(init).empty();
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}
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StringRef tblgen::Attribute::getStorageType() const {
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const auto *init = def->getValueInit("storageType");
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auto type = getValueAsString(init);
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if (type.empty())
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return "Attribute";
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return type;
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}
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StringRef tblgen::Attribute::getReturnType() const {
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const auto *init = def->getValueInit("returnType");
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return getValueAsString(init);
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}
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StringRef tblgen::Attribute::getConvertFromStorageCall() const {
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const auto *init = def->getValueInit("convertFromStorage");
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return getValueAsString(init);
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}
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bool tblgen::Attribute::isConstBuildable() const {
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const auto *init = def->getValueInit("constBuilderCall");
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return !getValueAsString(init).empty();
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}
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StringRef tblgen::Attribute::getConstBuilderTemplate() const {
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const auto *init = def->getValueInit("constBuilderCall");
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return getValueAsString(init);
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}
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bool tblgen::Attribute::hasDefaultValue() const {
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const auto *init = def->getValueInit("defaultValue");
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return !getValueAsString(init).empty();
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}
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bool tblgen::Attribute::isOptional() const {
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return def->getValueAsBit("isOptional");
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}
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std::string tblgen::Attribute::getDefaultValueTemplate() const {
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assert(isConstBuildable() && "requiers constBuilderCall");
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const auto *init = def->getValueInit("defaultValue");
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return llvm::formatv(getConstBuilderTemplate().str().c_str(), "{0}",
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getValueAsString(init));
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}
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StringRef tblgen::Attribute::getTableGenDefName() const {
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return def->getName();
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}
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StringRef tblgen::Attribute::getDerivedCodeBody() const {
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assert(isDerivedAttr() && "only derived attribute has 'body' field");
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return def->getValueAsString("body");
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}
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tblgen::ConstantAttr::ConstantAttr(const llvm::DefInit *init)
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: def(init->getDef()) {
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assert(def->isSubClassOf("ConstantAttr") &&
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"must be subclass of TableGen 'ConstantAttr' class");
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}
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tblgen::Attribute tblgen::ConstantAttr::getAttribute() const {
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return Attribute(def->getValueAsDef("attr"));
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}
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StringRef tblgen::ConstantAttr::getConstantValue() const {
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return def->getValueAsString("value");
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}
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