| //===- lib/CodeGen/GlobalISel/LegalizerMutations.cpp - Mutations ----------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // A library of mutation factories to use for LegalityMutation. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/CodeGen/GlobalISel/LegalizerInfo.h" |
| |
| using namespace llvm; |
| |
| LegalizeMutation LegalizeMutations::changeTo(unsigned TypeIdx, LLT Ty) { |
| return |
| [=](const LegalityQuery &Query) { return std::make_pair(TypeIdx, Ty); }; |
| } |
| |
| LegalizeMutation LegalizeMutations::changeTo(unsigned TypeIdx, |
| unsigned FromTypeIdx) { |
| return [=](const LegalityQuery &Query) { |
| return std::make_pair(TypeIdx, Query.Types[FromTypeIdx]); |
| }; |
| } |
| |
| LegalizeMutation LegalizeMutations::widenScalarToNextPow2(unsigned TypeIdx, |
| unsigned Min) { |
| return [=](const LegalityQuery &Query) { |
| unsigned NewSizeInBits = |
| 1 << Log2_32_Ceil(Query.Types[TypeIdx].getSizeInBits()); |
| if (NewSizeInBits < Min) |
| NewSizeInBits = Min; |
| return std::make_pair(TypeIdx, LLT::scalar(NewSizeInBits)); |
| }; |
| } |
| |
| LegalizeMutation LegalizeMutations::moreElementsToNextPow2(unsigned TypeIdx, |
| unsigned Min) { |
| return [=](const LegalityQuery &Query) { |
| const LLT &VecTy = Query.Types[TypeIdx]; |
| unsigned NewNumElements = 1 << Log2_32_Ceil(VecTy.getNumElements()); |
| if (NewNumElements < Min) |
| NewNumElements = Min; |
| return std::make_pair( |
| TypeIdx, LLT::vector(NewNumElements, VecTy.getScalarSizeInBits())); |
| }; |
| } |