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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
69 lines
1.9 KiB
C++
69 lines
1.9 KiB
C++
//===-- CostTable.h - Instruction Cost Table handling -----------*- C++ -*-===//
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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
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/// Cost tables and simple lookup functions
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CODEGEN_COSTTABLE_H_
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#define LLVM_CODEGEN_COSTTABLE_H_
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/Support/MachineValueType.h"
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namespace llvm {
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/// Cost Table Entry
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struct CostTblEntry {
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int ISD;
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MVT::SimpleValueType Type;
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unsigned Cost;
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};
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/// Find in cost table, TypeTy must be comparable to CompareTy by ==
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inline const CostTblEntry *CostTableLookup(ArrayRef<CostTblEntry> Tbl,
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int ISD, MVT Ty) {
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auto I = find_if(Tbl, [=](const CostTblEntry &Entry) {
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return ISD == Entry.ISD && Ty == Entry.Type;
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});
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if (I != Tbl.end())
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return I;
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// Could not find an entry.
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return nullptr;
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}
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/// Type Conversion Cost Table
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struct TypeConversionCostTblEntry {
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int ISD;
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MVT::SimpleValueType Dst;
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MVT::SimpleValueType Src;
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unsigned Cost;
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};
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/// Find in type conversion cost table, TypeTy must be comparable to CompareTy
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/// by ==
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inline const TypeConversionCostTblEntry *
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ConvertCostTableLookup(ArrayRef<TypeConversionCostTblEntry> Tbl,
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int ISD, MVT Dst, MVT Src) {
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auto I = find_if(Tbl, [=](const TypeConversionCostTblEntry &Entry) {
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return ISD == Entry.ISD && Src == Entry.Src && Dst == Entry.Dst;
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});
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if (I != Tbl.end())
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return I;
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// Could not find an entry.
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return nullptr;
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}
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} // namespace llvm
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#endif /* LLVM_CODEGEN_COSTTABLE_H_ */
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