1 //===- AArch64LegalizerInfo.cpp ----------------------------------*- C++ -*-==//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 /// This file implements the targeting of the Machinelegalizer class for
12 /// \todo This should be generated by TableGen.
13 //===----------------------------------------------------------------------===//
15 #include "AArch64LegalizerInfo.h"
16 #include "llvm/CodeGen/ValueTypes.h"
17 #include "llvm/IR/Type.h"
18 #include "llvm/IR/DerivedTypes.h"
19 #include "llvm/Target/TargetOpcodes.h"
23 #ifndef LLVM_BUILD_GLOBAL_ISEL
24 #error "You shouldn't build this"
27 AArch64LegalizerInfo::AArch64LegalizerInfo() {
28 using namespace TargetOpcode;
29 const LLT p0 = LLT::pointer(0, 64);
30 const LLT s1 = LLT::scalar(1);
31 const LLT s8 = LLT::scalar(8);
32 const LLT s16 = LLT::scalar(16);
33 const LLT s32 = LLT::scalar(32);
34 const LLT s64 = LLT::scalar(64);
35 const LLT v2s32 = LLT::vector(2, 32);
36 const LLT v4s32 = LLT::vector(4, 32);
37 const LLT v2s64 = LLT::vector(2, 64);
39 for (auto BinOp : {G_ADD, G_SUB, G_MUL, G_AND, G_OR, G_XOR, G_SHL}) {
40 // These operations naturally get the right answer when used on
41 // GPR32, even if the actual type is narrower.
42 for (auto Ty : {s1, s8, s16, s32, s64, v2s32, v4s32, v2s64})
43 setAction({BinOp, Ty}, Legal);
46 setAction({G_GEP, p0}, Legal);
47 setAction({G_GEP, 1, s64}, Legal);
49 for (auto Ty : {s1, s8, s16, s32})
50 setAction({G_GEP, 1, Ty}, WidenScalar);
52 for (auto BinOp : {G_LSHR, G_ASHR, G_SDIV, G_UDIV}) {
53 for (auto Ty : {s32, s64})
54 setAction({BinOp, Ty}, Legal);
56 for (auto Ty : {s1, s8, s16})
57 setAction({BinOp, Ty}, WidenScalar);
60 for (auto BinOp : { G_SREM, G_UREM })
61 for (auto Ty : { s1, s8, s16, s32, s64 })
62 setAction({BinOp, Ty}, Lower);
64 for (auto Op : { G_UADDE, G_USUBE, G_SADDO, G_SSUBO, G_SMULO, G_UMULO }) {
65 for (auto Ty : { s32, s64 })
66 setAction({Op, Ty}, Legal);
68 setAction({Op, 1, s1}, Legal);
71 for (auto BinOp : {G_FADD, G_FSUB, G_FMUL, G_FDIV})
72 for (auto Ty : {s32, s64})
73 setAction({BinOp, Ty}, Legal);
75 setAction({G_FREM, s32}, Libcall);
76 setAction({G_FREM, s64}, Libcall);
78 for (auto MemOp : {G_LOAD, G_STORE}) {
79 for (auto Ty : {s8, s16, s32, s64, p0, v2s32})
80 setAction({MemOp, Ty}, Legal);
82 setAction({MemOp, s1}, WidenScalar);
84 // And everything's fine in addrspace 0.
85 setAction({MemOp, 1, p0}, Legal);
89 for (auto Ty : {s32, s64}) {
90 setAction({TargetOpcode::G_CONSTANT, Ty}, Legal);
91 setAction({TargetOpcode::G_FCONSTANT, Ty}, Legal);
94 setAction({G_CONSTANT, p0}, Legal);
96 for (auto Ty : {s1, s8, s16})
97 setAction({TargetOpcode::G_CONSTANT, Ty}, WidenScalar);
99 setAction({TargetOpcode::G_FCONSTANT, s16}, WidenScalar);
101 setAction({G_ICMP, s1}, Legal);
102 setAction({G_ICMP, 1, s32}, Legal);
103 setAction({G_ICMP, 1, s64}, Legal);
104 setAction({G_ICMP, 1, p0}, Legal);
106 for (auto Ty : {s1, s8, s16}) {
107 setAction({G_ICMP, 1, Ty}, WidenScalar);
110 setAction({G_FCMP, s1}, Legal);
111 setAction({G_FCMP, 1, s32}, Legal);
112 setAction({G_FCMP, 1, s64}, Legal);
115 for (auto Ty : { s1, s8, s16, s32, s64 }) {
116 setAction({G_ZEXT, Ty}, Legal);
117 setAction({G_SEXT, Ty}, Legal);
118 setAction({G_ANYEXT, Ty}, Legal);
121 for (auto Ty : { s1, s8, s16, s32 }) {
122 setAction({G_ZEXT, 1, Ty}, Legal);
123 setAction({G_SEXT, 1, Ty}, Legal);
124 setAction({G_ANYEXT, 1, Ty}, Legal);
127 setAction({G_FPEXT, s64}, Legal);
128 setAction({G_FPEXT, 1, s32}, Legal);
131 for (auto Ty : { s16, s32 })
132 setAction({G_FPTRUNC, Ty}, Legal);
134 for (auto Ty : { s32, s64 })
135 setAction({G_FPTRUNC, 1, Ty}, Legal);
137 for (auto Ty : { s1, s8, s16, s32 })
138 setAction({G_TRUNC, Ty}, Legal);
140 for (auto Ty : { s8, s16, s32, s64 })
141 setAction({G_TRUNC, 1, Ty}, Legal);
144 for (auto Ty : { s1, s8, s16, s32, s64 }) {
145 setAction({G_FPTOSI, 0, Ty}, Legal);
146 setAction({G_FPTOUI, 0, Ty}, Legal);
147 setAction({G_SITOFP, 1, Ty}, Legal);
148 setAction({G_UITOFP, 1, Ty}, Legal);
151 for (auto Ty : { s32, s64 }) {
152 setAction({G_FPTOSI, 1, Ty}, Legal);
153 setAction({G_FPTOUI, 1, Ty}, Legal);
154 setAction({G_SITOFP, 0, Ty}, Legal);
155 setAction({G_UITOFP, 0, Ty}, Legal);
159 for (auto Ty : {s1, s8, s16, s32})
160 setAction({G_BRCOND, Ty}, Legal);
163 for (auto Ty : {s1, s8, s16, s32, s64})
164 setAction({G_SELECT, Ty}, Legal);
166 setAction({G_SELECT, 1, s1}, Legal);
169 setAction({G_FRAME_INDEX, p0}, Legal);
170 setAction({G_GLOBAL_VALUE, p0}, Legal);
172 for (auto Ty : {s1, s8, s16, s32, s64})
173 setAction({G_PTRTOINT, 0, Ty}, Legal);
175 setAction({G_PTRTOINT, 1, p0}, Legal);
177 setAction({G_INTTOPTR, 0, p0}, Legal);
178 setAction({G_INTTOPTR, 1, s64}, Legal);
180 // Casts for 32 and 64-bit width type are just copies.
181 for (auto Ty : {s1, s8, s16, s32, s64}) {
182 setAction({G_BITCAST, 0, Ty}, Legal);
183 setAction({G_BITCAST, 1, Ty}, Legal);
186 // For the sake of copying bits around, the type does not really
187 // matter as long as it fits a register.
188 for (int EltSize = 8; EltSize <= 64; EltSize *= 2) {
189 setAction({G_BITCAST, 0, LLT::vector(128/EltSize, EltSize)}, Legal);
190 setAction({G_BITCAST, 1, LLT::vector(128/EltSize, EltSize)}, Legal);
194 setAction({G_BITCAST, 0, LLT::vector(64/EltSize, EltSize)}, Legal);
195 setAction({G_BITCAST, 1, LLT::vector(64/EltSize, EltSize)}, Legal);
199 setAction({G_BITCAST, 0, LLT::vector(32/EltSize, EltSize)}, Legal);
200 setAction({G_BITCAST, 1, LLT::vector(32/EltSize, EltSize)}, Legal);