1 //===-- CostTable.h - Instruction Cost Table handling -----------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 /// 10 /// \file 11 /// \brief Cost tables and simple lookup functions 12 /// 13 //===----------------------------------------------------------------------===// 14 15 #ifndef LLVM_TARGET_COSTTABLE_H_ 16 #define LLVM_TARGET_COSTTABLE_H_ 17 18 #include "llvm/ADT/ArrayRef.h" 19 #include "llvm/CodeGen/MachineValueType.h" 20 21 namespace llvm { 22 23 /// Cost Table Entry 24 struct 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 == 31 inline const CostTblEntry *CostTableLookup(ArrayRef<CostTblEntry> Tbl, 32 int ISD, MVT Ty) { 33 auto I = std::find_if(Tbl.begin(), Tbl.end(), 34 [=](const CostTblEntry &Entry) { 35 return ISD == Entry.ISD && Ty == Entry.Type; }); 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 44 struct 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 == 53 inline const TypeConversionCostTblEntry * 54 ConvertCostTableLookup(ArrayRef<TypeConversionCostTblEntry> Tbl, 55 int ISD, MVT Dst, MVT Src) { 56 auto I = std::find_if(Tbl.begin(), Tbl.end(), 57 [=](const TypeConversionCostTblEntry &Entry) { 58 return ISD == Entry.ISD && Src == Entry.Src && 59 Dst == Entry.Dst; 60 }); 61 if (I != Tbl.end()) 62 return I; 63 64 // Could not find an entry. 65 return nullptr; 66 } 67 68 } // namespace llvm 69 70 71 #endif /* LLVM_TARGET_COSTTABLE_H_ */ 72
