1 //===- MipsLegalizerInfo.cpp ------------------------------------*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 /// \file
10 /// This file implements the targeting of the Machinelegalizer class for Mips.
11 /// \todo This should be generated by TableGen.
12 //===----------------------------------------------------------------------===//
13
14 #include "MipsLegalizerInfo.h"
15 #include "MipsTargetMachine.h"
16 #include "llvm/CodeGen/GlobalISel/LegalizerHelper.h"
17
18 using namespace llvm;
19
MipsLegalizerInfo(const MipsSubtarget & ST)20 MipsLegalizerInfo::MipsLegalizerInfo(const MipsSubtarget &ST) {
21 using namespace TargetOpcode;
22
23 const LLT s1 = LLT::scalar(1);
24 const LLT s32 = LLT::scalar(32);
25 const LLT s64 = LLT::scalar(64);
26 const LLT p0 = LLT::pointer(0, 32);
27
28 getActionDefinitionsBuilder(G_ADD)
29 .legalFor({s32})
30 .clampScalar(0, s32, s32);
31
32 getActionDefinitionsBuilder(G_UADDE)
33 .lowerFor({{s32, s1}});
34
35 getActionDefinitionsBuilder({G_LOAD, G_STORE})
36 .legalForCartesianProduct({p0, s32}, {p0});
37
38 getActionDefinitionsBuilder(G_SELECT)
39 .legalForCartesianProduct({p0, s32}, {s32})
40 .minScalar(0, s32)
41 .minScalar(1, s32);
42
43 getActionDefinitionsBuilder({G_AND, G_OR, G_XOR})
44 .legalFor({s32})
45 .clampScalar(0, s32, s32);
46
47 getActionDefinitionsBuilder({G_SHL, G_ASHR, G_LSHR})
48 .legalFor({s32});
49
50 getActionDefinitionsBuilder({G_SDIV, G_SREM, G_UREM, G_UDIV})
51 .legalFor({s32})
52 .minScalar(0, s32)
53 .libcallFor({s64});
54
55 getActionDefinitionsBuilder(G_ICMP)
56 .legalFor({{s32, s32}})
57 .minScalar(0, s32);
58
59 getActionDefinitionsBuilder(G_CONSTANT)
60 .legalFor({s32})
61 .clampScalar(0, s32, s32);
62
63 getActionDefinitionsBuilder(G_GEP)
64 .legalFor({{p0, s32}});
65
66 getActionDefinitionsBuilder(G_FRAME_INDEX)
67 .legalFor({p0});
68
69 getActionDefinitionsBuilder(G_GLOBAL_VALUE)
70 .legalFor({p0});
71
72 computeTables();
73 verify(*ST.getInstrInfo());
74 }
75
legalizeCustom(MachineInstr & MI,MachineRegisterInfo & MRI,MachineIRBuilder & MIRBuilder,GISelChangeObserver & Observer) const76 bool MipsLegalizerInfo::legalizeCustom(MachineInstr &MI,
77 MachineRegisterInfo &MRI,
78 MachineIRBuilder &MIRBuilder,
79 GISelChangeObserver &Observer) const {
80
81 using namespace TargetOpcode;
82
83 MIRBuilder.setInstr(MI);
84
85 return false;
86 }
87