1 //===-- CostTable.h - Instruction Cost Table handling -----------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
11 /// \brief Cost tables and simple lookup functions
13 //===----------------------------------------------------------------------===//
15 #ifndef LLVM_TARGET_COSTTABLE_H_
16 #define LLVM_TARGET_COSTTABLE_H_
21 template <class TypeTy>
28 /// Find in cost table, TypeTy must be comparable to CompareTy by ==
29 template <class TypeTy, class CompareTy>
30 int CostTableLookup(const CostTblEntry<TypeTy> *Tbl, unsigned len, int ISD,
32 for (unsigned int i = 0; i < len; ++i)
33 if (ISD == Tbl[i].ISD && Ty == Tbl[i].Type)
36 // Could not find an entry.
40 /// Find in cost table, TypeTy must be comparable to CompareTy by ==
41 template <class TypeTy, class CompareTy, unsigned N>
42 int CostTableLookup(const CostTblEntry<TypeTy>(&Tbl)[N], int ISD,
44 return CostTableLookup(Tbl, N, ISD, Ty);
47 /// Type Conversion Cost Table
48 template <class TypeTy>
49 struct TypeConversionCostTblEntry {
56 /// Find in type conversion cost table, TypeTy must be comparable to CompareTy
58 template <class TypeTy, class CompareTy>
59 int ConvertCostTableLookup(const TypeConversionCostTblEntry<TypeTy> *Tbl,
60 unsigned len, int ISD, CompareTy Dst,
62 for (unsigned int i = 0; i < len; ++i)
63 if (ISD == Tbl[i].ISD && Src == Tbl[i].Src && Dst == Tbl[i].Dst)
66 // Could not find an entry.
70 /// Find in type conversion cost table, TypeTy must be comparable to CompareTy
72 template <class TypeTy, class CompareTy, unsigned N>
73 int ConvertCostTableLookup(const TypeConversionCostTblEntry<TypeTy>(&Tbl)[N],
74 int ISD, CompareTy Dst, CompareTy Src) {
75 return ConvertCostTableLookup(Tbl, N, ISD, Dst, Src);
81 #endif /* LLVM_TARGET_COSTTABLE_H_ */