1 //===- MipsLegalizerInfo.cpp ------------------------------------*- C++ -*-===//
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
7 //===----------------------------------------------------------------------===//
9 /// This file implements the targeting of the Machinelegalizer class for Mips.
10 /// \todo This should be generated by TableGen.
11 //===----------------------------------------------------------------------===//
13 #include "MipsLegalizerInfo.h"
14 #include "MipsTargetMachine.h"
15 #include "llvm/CodeGen/GlobalISel/LegalizerHelper.h"
19 MipsLegalizerInfo::MipsLegalizerInfo(const MipsSubtarget &ST) {
20 using namespace TargetOpcode;
22 const LLT s1 = LLT::scalar(1);
23 const LLT s32 = LLT::scalar(32);
24 const LLT s64 = LLT::scalar(64);
25 const LLT p0 = LLT::pointer(0, 32);
27 getActionDefinitionsBuilder({G_ADD, G_SUB, G_MUL})
29 .clampScalar(0, s32, s32);
31 getActionDefinitionsBuilder({G_UADDO, G_UADDE, G_USUBO, G_USUBE, G_UMULO})
32 .lowerFor({{s32, s1}});
34 getActionDefinitionsBuilder(G_UMULH)
38 getActionDefinitionsBuilder({G_LOAD, G_STORE})
39 .legalForTypesWithMemDesc({{s32, p0, 8, 8},
46 getActionDefinitionsBuilder(G_UNMERGE_VALUES)
47 .legalFor({{s32, s64}});
49 getActionDefinitionsBuilder(G_MERGE_VALUES)
50 .legalFor({{s64, s32}});
52 getActionDefinitionsBuilder({G_ZEXTLOAD, G_SEXTLOAD})
53 .legalForTypesWithMemDesc({{s32, p0, 8, 8},
57 getActionDefinitionsBuilder(G_SELECT)
58 .legalForCartesianProduct({p0, s32, s64}, {s32})
62 getActionDefinitionsBuilder(G_BRCOND)
66 getActionDefinitionsBuilder(G_PHI)
67 .legalFor({p0, s32, s64})
70 getActionDefinitionsBuilder({G_AND, G_OR, G_XOR})
72 .clampScalar(0, s32, s32);
74 getActionDefinitionsBuilder({G_SDIV, G_SREM, G_UREM, G_UDIV})
79 getActionDefinitionsBuilder({G_SHL, G_ASHR, G_LSHR})
83 getActionDefinitionsBuilder(G_ICMP)
84 .legalForCartesianProduct({s32}, {s32, p0})
85 .clampScalar(1, s32, s32)
88 getActionDefinitionsBuilder(G_CONSTANT)
90 .clampScalar(0, s32, s32);
92 getActionDefinitionsBuilder(G_GEP)
93 .legalFor({{p0, s32}});
95 getActionDefinitionsBuilder(G_FRAME_INDEX)
98 getActionDefinitionsBuilder(G_GLOBAL_VALUE)
102 getActionDefinitionsBuilder(G_FCONSTANT)
103 .legalFor({s32, s64});
105 getActionDefinitionsBuilder({G_FADD, G_FSUB, G_FMUL, G_FDIV, G_FABS, G_FSQRT})
106 .legalFor({s32, s64});
108 getActionDefinitionsBuilder(G_FCMP)
109 .legalFor({{s32, s32}, {s32, s64}})
112 getActionDefinitionsBuilder({G_FCEIL, G_FFLOOR})
113 .libcallFor({s32, s64});
115 getActionDefinitionsBuilder(G_FPEXT)
116 .legalFor({{s64, s32}});
118 getActionDefinitionsBuilder(G_FPTRUNC)
119 .legalFor({{s32, s64}});
121 // FP to int conversion instructions
122 getActionDefinitionsBuilder(G_FPTOSI)
123 .legalForCartesianProduct({s32}, {s64, s32})
124 .libcallForCartesianProduct({s64}, {s64, s32})
127 getActionDefinitionsBuilder(G_FPTOUI)
128 .libcallForCartesianProduct({s64}, {s64, s32})
131 // Int to FP conversion instructions
132 getActionDefinitionsBuilder(G_SITOFP)
133 .legalForCartesianProduct({s64, s32}, {s32})
134 .libcallForCartesianProduct({s64, s32}, {s64})
137 getActionDefinitionsBuilder(G_UITOFP)
138 .libcallForCartesianProduct({s64, s32}, {s64})
142 verify(*ST.getInstrInfo());
145 bool MipsLegalizerInfo::legalizeCustom(MachineInstr &MI,
146 MachineRegisterInfo &MRI,
147 MachineIRBuilder &MIRBuilder,
148 GISelChangeObserver &Observer) const {
150 using namespace TargetOpcode;
152 MIRBuilder.setInstr(MI);