1//===-- CostTable.h - Instruction Cost Table handling -----------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8///
9/// \file
10/// Cost tables and simple lookup functions
11///
12//===----------------------------------------------------------------------===//
13
14#ifndef LLVM_CODEGEN_COSTTABLE_H_
15#define LLVM_CODEGEN_COSTTABLE_H_
16
17#include "llvm/ADT/ArrayRef.h"
18#include "llvm/ADT/STLExtras.h"
19#include "llvm/Support/MachineValueType.h"
20
21namespace llvm {
22
23/// Cost Table Entry
24struct CostTblEntry {
25  int ISD;
26  MVT::SimpleValueType Type;
27  unsigned Cost;
28};
29
30/// Find in cost table, TypeTy must be comparable to CompareTy by ==
31inline const CostTblEntry *CostTableLookup(ArrayRef<CostTblEntry> Tbl,
32                                           int ISD, MVT Ty) {
33  auto I = find_if(Tbl, [=](const CostTblEntry &Entry) {
34    return ISD == Entry.ISD && Ty == Entry.Type;
35  });
36  if (I != Tbl.end())
37    return I;
38
39  // Could not find an entry.
40  return nullptr;
41}
42
43/// Type Conversion Cost Table
44struct TypeConversionCostTblEntry {
45  int ISD;
46  MVT::SimpleValueType Dst;
47  MVT::SimpleValueType Src;
48  unsigned Cost;
49};
50
51/// Find in type conversion cost table, TypeTy must be comparable to CompareTy
52/// by ==
53inline const TypeConversionCostTblEntry *
54ConvertCostTableLookup(ArrayRef<TypeConversionCostTblEntry> Tbl,
55                       int ISD, MVT Dst, MVT Src) {
56  auto I = find_if(Tbl, [=](const TypeConversionCostTblEntry &Entry) {
57    return ISD == Entry.ISD && Src == Entry.Src && Dst == Entry.Dst;
58  });
59  if (I != Tbl.end())
60    return I;
61
62  // Could not find an entry.
63  return nullptr;
64}
65
66} // namespace llvm
67
68#endif /* LLVM_CODEGEN_COSTTABLE_H_ */
69