| //===-- CostTable.h - Instruction Cost Table handling -----------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| /// |
| /// \file |
| /// \brief Cost tables and simple lookup functions |
| /// |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_TARGET_COSTTABLE_H_ |
| #define LLVM_TARGET_COSTTABLE_H_ |
| |
| #include "llvm/ADT/ArrayRef.h" |
| #include "llvm/ADT/STLExtras.h" |
| #include "llvm/CodeGen/MachineValueType.h" |
| |
| namespace llvm { |
| |
| /// Cost Table Entry |
| struct CostTblEntry { |
| int ISD; |
| MVT::SimpleValueType Type; |
| unsigned Cost; |
| }; |
| |
| /// Find in cost table, TypeTy must be comparable to CompareTy by == |
| inline const CostTblEntry *CostTableLookup(ArrayRef<CostTblEntry> Tbl, |
| int ISD, MVT Ty) { |
| auto I = find_if(Tbl, [=](const CostTblEntry &Entry) { |
| return ISD == Entry.ISD && Ty == Entry.Type; |
| }); |
| if (I != Tbl.end()) |
| return I; |
| |
| // Could not find an entry. |
| return nullptr; |
| } |
| |
| /// Type Conversion Cost Table |
| struct TypeConversionCostTblEntry { |
| int ISD; |
| MVT::SimpleValueType Dst; |
| MVT::SimpleValueType Src; |
| unsigned Cost; |
| }; |
| |
| /// Find in type conversion cost table, TypeTy must be comparable to CompareTy |
| /// by == |
| inline const TypeConversionCostTblEntry * |
| ConvertCostTableLookup(ArrayRef<TypeConversionCostTblEntry> Tbl, |
| int ISD, MVT Dst, MVT Src) { |
| auto I = find_if(Tbl, [=](const TypeConversionCostTblEntry &Entry) { |
| return ISD == Entry.ISD && Src == Entry.Src && Dst == Entry.Dst; |
| }); |
| if (I != Tbl.end()) |
| return I; |
| |
| // Could not find an entry. |
| return nullptr; |
| } |
| |
| } // namespace llvm |
| |
| |
| #endif /* LLVM_TARGET_COSTTABLE_H_ */ |