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//===-- 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
/// Cost tables and simple lookup functions
///
//===----------------------------------------------------------------------===//
#ifndef LLVM_CODEGEN_COSTTABLE_H_
#define LLVM_CODEGEN_COSTTABLE_H_
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/Support/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_CODEGEN_COSTTABLE_H_ */
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