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9d9a46a465
This is used by llvm tblgen as well as by LLVM Targets, so the only common place is Support for now. (maybe we need another target for these sorts of things - but for now I'm at least making them correct & we can make them better if/when people have strong feelings) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@328395 91177308-0d34-0410-b5e6-96231b3b80d8
70 lines
1.8 KiB
C++
70 lines
1.8 KiB
C++
//===-- CostTable.h - Instruction Cost Table handling -----------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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///
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/// \file
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/// \brief Cost tables and simple lookup functions
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CODEGEN_COSTTABLE_H_
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#define LLVM_CODEGEN_COSTTABLE_H_
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/Support/MachineValueType.h"
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namespace llvm {
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/// Cost Table Entry
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struct CostTblEntry {
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int ISD;
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MVT::SimpleValueType Type;
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unsigned Cost;
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};
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/// Find in cost table, TypeTy must be comparable to CompareTy by ==
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inline const CostTblEntry *CostTableLookup(ArrayRef<CostTblEntry> Tbl,
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int ISD, MVT Ty) {
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auto I = find_if(Tbl, [=](const CostTblEntry &Entry) {
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return ISD == Entry.ISD && Ty == Entry.Type;
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});
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if (I != Tbl.end())
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return I;
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// Could not find an entry.
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return nullptr;
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}
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/// Type Conversion Cost Table
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struct TypeConversionCostTblEntry {
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int ISD;
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MVT::SimpleValueType Dst;
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MVT::SimpleValueType Src;
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unsigned Cost;
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};
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/// Find in type conversion cost table, TypeTy must be comparable to CompareTy
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/// by ==
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inline const TypeConversionCostTblEntry *
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ConvertCostTableLookup(ArrayRef<TypeConversionCostTblEntry> Tbl,
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int ISD, MVT Dst, MVT Src) {
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auto I = find_if(Tbl, [=](const TypeConversionCostTblEntry &Entry) {
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return ISD == Entry.ISD && Src == Entry.Src && Dst == Entry.Dst;
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});
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if (I != Tbl.end())
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return I;
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// Could not find an entry.
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return nullptr;
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}
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} // namespace llvm
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#endif /* LLVM_CODEGEN_COSTTABLE_H_ */
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