53 lines · cpp
1//===-- M68kLegalizerInfo.cpp -----------------------------------*- C++ -*-===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8/// \file9/// This file implements the targeting of the Machinelegalizer class for M68k.10//===----------------------------------------------------------------------===//11 12#include "M68kLegalizerInfo.h"13#include "llvm/CodeGen/GlobalISel/LegalizerHelper.h"14#include "llvm/CodeGen/GlobalISel/LegalizerInfo.h"15#include "llvm/CodeGen/TargetOpcodes.h"16#include "llvm/CodeGen/ValueTypes.h"17#include "llvm/IR/DerivedTypes.h"18#include "llvm/IR/Type.h"19 20using namespace llvm;21 22M68kLegalizerInfo::M68kLegalizerInfo(const M68kSubtarget &ST) {23 using namespace TargetOpcode;24 const LLT s8 = LLT::scalar(8);25 const LLT s16 = LLT::scalar(16);26 const LLT s32 = LLT::scalar(32);27 const LLT p0 = LLT::pointer(0, 32);28 29 getActionDefinitionsBuilder({G_ADD, G_SUB, G_MUL, G_UDIV, G_AND})30 .legalFor({s8, s16, s32})31 .clampScalar(0, s8, s32)32 .widenScalarToNextPow2(0, 8);33 34 getActionDefinitionsBuilder(G_CONSTANT)35 .legalFor({s32, p0})36 .clampScalar(0, s32, s32);37 38 getActionDefinitionsBuilder({G_FRAME_INDEX, G_GLOBAL_VALUE}).legalFor({p0});39 40 getActionDefinitionsBuilder({G_STORE, G_LOAD})41 .legalForTypesWithMemDesc({{s32, p0, s32, 4},42 {s32, p0, s16, 4},43 {s32, p0, s8, 4},44 {s16, p0, s16, 2},45 {s8, p0, s8, 1},46 {p0, p0, s32, 4}})47 .clampScalar(0, s8, s32);48 49 getActionDefinitionsBuilder(G_PTR_ADD).legalFor({{p0, s32}});50 51 getLegacyLegalizerInfo().computeTables();52}53