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-exception
6//
7//===----------------------------------------------------------------------===//
8/// \file
9/// 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