69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
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//===-- 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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