71 lines
2.8 KiB
C
71 lines
2.8 KiB
C
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//===- CombinerUtils.h ----------------------------------------------------===//
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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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/// \file Utility functions used by both Combiner backends.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_UTILS_TABLEGEN_COMBINERUTILS_H
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#define LLVM_UTILS_TABLEGEN_COMBINERUTILS_H
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#include "llvm/ADT/StringRef.h"
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#include "llvm/TableGen/Record.h"
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namespace llvm {
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/// A convenience function to check that an Init refers to a specific def. This
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/// is primarily useful for testing for defs and similar in DagInit's since
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/// DagInit's support any type inside them.
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inline bool isSpecificDef(const Init &N, StringRef Def) {
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if (const DefInit *OpI = dyn_cast<DefInit>(&N))
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if (OpI->getDef()->getName() == Def)
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return true;
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return false;
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}
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/// A convenience function to check that an Init refers to a def that is a
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/// subclass of the given class and coerce it to a def if it is. This is
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/// primarily useful for testing for subclasses of GIDefKind and similar in
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/// DagInit's since DagInit's support any type inside them.
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inline Record *getDefOfSubClass(const Init &N, StringRef Cls) {
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if (const DefInit *OpI = dyn_cast<DefInit>(&N))
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if (OpI->getDef()->isSubClassOf(Cls))
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return OpI->getDef();
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return nullptr;
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}
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/// A convenience function to check that an Init refers to a dag whose operator
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/// is a specific def and coerce it to a dag if it is. This is primarily useful
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/// for testing for subclasses of GIDefKind and similar in DagInit's since
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/// DagInit's support any type inside them.
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inline const DagInit *getDagWithSpecificOperator(const Init &N,
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StringRef Name) {
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if (const DagInit *I = dyn_cast<DagInit>(&N))
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if (I->getNumArgs() > 0)
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if (const DefInit *OpI = dyn_cast<DefInit>(I->getOperator()))
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if (OpI->getDef()->getName() == Name)
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return I;
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return nullptr;
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}
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/// A convenience function to check that an Init refers to a dag whose operator
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/// is a def that is a subclass of the given class and coerce it to a dag if it
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/// is. This is primarily useful for testing for subclasses of GIDefKind and
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/// similar in DagInit's since DagInit's support any type inside them.
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inline const DagInit *getDagWithOperatorOfSubClass(const Init &N,
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StringRef Cls) {
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if (const DagInit *I = dyn_cast<DagInit>(&N))
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if (const DefInit *OpI = dyn_cast<DefInit>(I->getOperator()))
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if (OpI->getDef()->isSubClassOf(Cls))
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return I;
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return nullptr;
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}
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} // namespace llvm
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#endif
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