1*0b57cec5SDimitry Andric //===- lib/CodeGen/GlobalISel/LegalizerMutations.cpp - Mutations ----------===// 2*0b57cec5SDimitry Andric // 3*0b57cec5SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*0b57cec5SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 5*0b57cec5SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*0b57cec5SDimitry Andric // 7*0b57cec5SDimitry Andric //===----------------------------------------------------------------------===// 8*0b57cec5SDimitry Andric // 9*0b57cec5SDimitry Andric // A library of mutation factories to use for LegalityMutation. 10*0b57cec5SDimitry Andric // 11*0b57cec5SDimitry Andric //===----------------------------------------------------------------------===// 12*0b57cec5SDimitry Andric 13*0b57cec5SDimitry Andric #include "llvm/CodeGen/GlobalISel/LegalizerInfo.h" 14*0b57cec5SDimitry Andric 15*0b57cec5SDimitry Andric using namespace llvm; 16*0b57cec5SDimitry Andric 17*0b57cec5SDimitry Andric LegalizeMutation LegalizeMutations::changeTo(unsigned TypeIdx, LLT Ty) { 18*0b57cec5SDimitry Andric return 19*0b57cec5SDimitry Andric [=](const LegalityQuery &Query) { return std::make_pair(TypeIdx, Ty); }; 20*0b57cec5SDimitry Andric } 21*0b57cec5SDimitry Andric 22*0b57cec5SDimitry Andric LegalizeMutation LegalizeMutations::changeTo(unsigned TypeIdx, 23*0b57cec5SDimitry Andric unsigned FromTypeIdx) { 24*0b57cec5SDimitry Andric return [=](const LegalityQuery &Query) { 25*0b57cec5SDimitry Andric return std::make_pair(TypeIdx, Query.Types[FromTypeIdx]); 26*0b57cec5SDimitry Andric }; 27*0b57cec5SDimitry Andric } 28*0b57cec5SDimitry Andric 29*0b57cec5SDimitry Andric LegalizeMutation LegalizeMutations::changeElementTo(unsigned TypeIdx, 30*0b57cec5SDimitry Andric unsigned FromTypeIdx) { 31*0b57cec5SDimitry Andric return [=](const LegalityQuery &Query) { 32*0b57cec5SDimitry Andric const LLT OldTy = Query.Types[TypeIdx]; 33*0b57cec5SDimitry Andric const LLT NewTy = Query.Types[FromTypeIdx]; 34*0b57cec5SDimitry Andric return std::make_pair(TypeIdx, OldTy.changeElementType(NewTy)); 35*0b57cec5SDimitry Andric }; 36*0b57cec5SDimitry Andric } 37*0b57cec5SDimitry Andric 38*0b57cec5SDimitry Andric LegalizeMutation LegalizeMutations::changeElementTo(unsigned TypeIdx, 39*0b57cec5SDimitry Andric LLT NewEltTy) { 40*0b57cec5SDimitry Andric return [=](const LegalityQuery &Query) { 41*0b57cec5SDimitry Andric const LLT OldTy = Query.Types[TypeIdx]; 42*0b57cec5SDimitry Andric return std::make_pair(TypeIdx, OldTy.changeElementType(NewEltTy)); 43*0b57cec5SDimitry Andric }; 44*0b57cec5SDimitry Andric } 45*0b57cec5SDimitry Andric 46*0b57cec5SDimitry Andric LegalizeMutation LegalizeMutations::widenScalarOrEltToNextPow2(unsigned TypeIdx, 47*0b57cec5SDimitry Andric unsigned Min) { 48*0b57cec5SDimitry Andric return [=](const LegalityQuery &Query) { 49*0b57cec5SDimitry Andric const LLT Ty = Query.Types[TypeIdx]; 50*0b57cec5SDimitry Andric unsigned NewEltSizeInBits = 51*0b57cec5SDimitry Andric std::max(1u << Log2_32_Ceil(Ty.getScalarSizeInBits()), Min); 52*0b57cec5SDimitry Andric return std::make_pair(TypeIdx, Ty.changeElementSize(NewEltSizeInBits)); 53*0b57cec5SDimitry Andric }; 54*0b57cec5SDimitry Andric } 55*0b57cec5SDimitry Andric 56*0b57cec5SDimitry Andric LegalizeMutation LegalizeMutations::moreElementsToNextPow2(unsigned TypeIdx, 57*0b57cec5SDimitry Andric unsigned Min) { 58*0b57cec5SDimitry Andric return [=](const LegalityQuery &Query) { 59*0b57cec5SDimitry Andric const LLT VecTy = Query.Types[TypeIdx]; 60*0b57cec5SDimitry Andric unsigned NewNumElements = 61*0b57cec5SDimitry Andric std::max(1u << Log2_32_Ceil(VecTy.getNumElements()), Min); 62*0b57cec5SDimitry Andric return std::make_pair(TypeIdx, 63*0b57cec5SDimitry Andric LLT::vector(NewNumElements, VecTy.getElementType())); 64*0b57cec5SDimitry Andric }; 65*0b57cec5SDimitry Andric } 66*0b57cec5SDimitry Andric 67*0b57cec5SDimitry Andric LegalizeMutation LegalizeMutations::scalarize(unsigned TypeIdx) { 68*0b57cec5SDimitry Andric return [=](const LegalityQuery &Query) { 69*0b57cec5SDimitry Andric return std::make_pair(TypeIdx, Query.Types[TypeIdx].getElementType()); 70*0b57cec5SDimitry Andric }; 71*0b57cec5SDimitry Andric } 72