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b3755e7fa2
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173382 91177308-0d34-0410-b5e6-96231b3b80d8
65 lines
1.6 KiB
C++
65 lines
1.6 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_TARGET_COSTTABLE_H_
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#define LLVM_TARGET_COSTTABLE_H_
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namespace llvm {
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/// Cost Table Entry
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template <class TypeTy>
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struct CostTblEntry {
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int ISD;
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TypeTy Type;
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unsigned Cost;
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};
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/// Find in cost table, TypeTy must be comparable by ==
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template <class TypeTy>
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int CostTableLookup(const CostTblEntry<TypeTy> *Tbl,
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unsigned len, int ISD, TypeTy Ty) {
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for (unsigned int i = 0; i < len; ++i)
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if (Tbl[i].ISD == ISD && Tbl[i].Type == Ty)
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return i;
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// Could not find an entry.
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return -1;
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}
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/// Type Conversion Cost Table
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template <class TypeTy>
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struct TypeConversionCostTblEntry {
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int ISD;
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TypeTy Dst;
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TypeTy 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 by ==
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template <class TypeTy>
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int ConvertCostTableLookup(const TypeConversionCostTblEntry<TypeTy> *Tbl,
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unsigned len, int ISD, TypeTy Dst, TypeTy Src) {
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for (unsigned int i = 0; i < len; ++i)
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if (Tbl[i].ISD == ISD && Tbl[i].Src == Src && Tbl[i].Dst == Dst)
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return i;
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// Could not find an entry.
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return -1;
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}
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} // namespace llvm
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#endif /* LLVM_TARGET_COSTTABLE_H_ */
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