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
20 using namespace llvm;
21
M68kLegalizerInfo(const M68kSubtarget & ST)22 M68kLegalizerInfo::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