xref: /llvm-project/llvm/unittests/CodeGen/GlobalISel/GISelUtilsTest.cpp (revision 1ef3ed0eb49d39d6eda84dec7e702aee7f55e9ae) 
1 //===- GISelUtilsTest.cpp -------------------------------------------------===//
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 
9 #include "llvm/CodeGen/GlobalISel/Utils.h"
10 #include "gtest/gtest.h"
11 
12 using namespace llvm;
13 
14 namespace {
15 static const LLT S1 = LLT::scalar(1);
16 static const LLT S8 = LLT::scalar(8);
17 static const LLT S16 = LLT::scalar(16);
18 static const LLT S32 = LLT::scalar(32);
19 static const LLT S64 = LLT::scalar(64);
20 static const LLT P0 = LLT::pointer(0, 64);
21 static const LLT P1 = LLT::pointer(1, 32);
22 
23 static const LLT V2S8 = LLT::vector(2, 8);
24 static const LLT V4S8 = LLT::vector(4, 8);
25 static const LLT V8S8 = LLT::vector(8, 8);
26 
27 static const LLT V2S16 = LLT::vector(2, 16);
28 static const LLT V3S16 = LLT::vector(3, 16);
29 static const LLT V4S16 = LLT::vector(4, 16);
30 
31 static const LLT V2S32 = LLT::vector(2, 32);
32 static const LLT V3S32 = LLT::vector(3, 32);
33 static const LLT V4S32 = LLT::vector(4, 32);
34 static const LLT V6S32 = LLT::vector(6, 32);
35 
36 static const LLT V2S64 = LLT::vector(2, 64);
37 static const LLT V3S64 = LLT::vector(3, 64);
38 static const LLT V4S64 = LLT::vector(4, 64);
39 
40 static const LLT V2P0 = LLT::vector(2, P0);
41 static const LLT V3P0 = LLT::vector(3, P0);
42 static const LLT V4P0 = LLT::vector(4, P0);
43 static const LLT V6P0 = LLT::vector(6, P0);
44 
45 static const LLT V2P1 = LLT::vector(2, P1);
46 static const LLT V4P1 = LLT::vector(4, P1);
47 
48 TEST(GISelUtilsTest, getGCDType) {
49   EXPECT_EQ(S1, getGCDType(S1, S1));
50   EXPECT_EQ(S32, getGCDType(S32, S32));
51   EXPECT_EQ(S1, getGCDType(S1, S32));
52   EXPECT_EQ(S1, getGCDType(S32, S1));
53   EXPECT_EQ(S16, getGCDType(S16, S32));
54   EXPECT_EQ(S16, getGCDType(S32, S16));
55 
56   EXPECT_EQ(V2S32, getGCDType(V2S32, V2S32));
57   EXPECT_EQ(S32, getGCDType(V3S32, V2S32));
58   EXPECT_EQ(S32, getGCDType(V2S32, V3S32));
59 
60   EXPECT_EQ(V2S16, getGCDType(V4S16, V2S16));
61   EXPECT_EQ(V2S16, getGCDType(V2S16, V4S16));
62 
63   EXPECT_EQ(V2S32, getGCDType(V4S32, V2S32));
64   EXPECT_EQ(V2S32, getGCDType(V2S32, V4S32));
65 
66   EXPECT_EQ(S16, getGCDType(P0, S16));
67   EXPECT_EQ(S16, getGCDType(S16, P0));
68 
69   EXPECT_EQ(S32, getGCDType(P0, S32));
70   EXPECT_EQ(S32, getGCDType(S32, P0));
71 
72   EXPECT_EQ(P0, getGCDType(P0, S64));
73   EXPECT_EQ(S64, getGCDType(S64, P0));
74 
75   EXPECT_EQ(S32, getGCDType(P0, P1));
76   EXPECT_EQ(S32, getGCDType(P1, P0));
77 
78   EXPECT_EQ(P0, getGCDType(V3P0, V2P0));
79   EXPECT_EQ(P0, getGCDType(V2P0, V3P0));
80 
81   EXPECT_EQ(P0, getGCDType(P0, V2P0));
82   EXPECT_EQ(P0, getGCDType(V2P0, P0));
83 
84 
85   EXPECT_EQ(V2P0, getGCDType(V2P0, V2P0));
86   EXPECT_EQ(P0, getGCDType(V3P0, V2P0));
87   EXPECT_EQ(P0, getGCDType(V2P0, V3P0));
88   EXPECT_EQ(V2P0, getGCDType(V4P0, V2P0));
89 
90   EXPECT_EQ(V2P0, getGCDType(V2P0, V4P1));
91   EXPECT_EQ(V4P1, getGCDType(V4P1, V2P0));
92 
93   EXPECT_EQ(V2P0, getGCDType(V4P0, V4P1));
94   EXPECT_EQ(V4P1, getGCDType(V4P1, V4P0));
95 
96   // Elements have same size, but have different pointeriness, so prefer the
97   // original element type.
98   EXPECT_EQ(V2P0, getGCDType(V2P0, V4S64));
99   EXPECT_EQ(V2S64, getGCDType(V4S64, V2P0));
100 
101   EXPECT_EQ(V2S16, getGCDType(V2S16, V4P1));
102   EXPECT_EQ(P1, getGCDType(V4P1, V2S16));
103   EXPECT_EQ(V2P1, getGCDType(V4P1, V4S16));
104   EXPECT_EQ(V4S16, getGCDType(V4S16, V2P1));
105 
106   EXPECT_EQ(P0, getGCDType(P0, V2S64));
107   EXPECT_EQ(S64, getGCDType(V2S64, P0));
108 
109   EXPECT_EQ(S16, getGCDType(V2S16, V3S16));
110   EXPECT_EQ(S16, getGCDType(V3S16, V2S16));
111   EXPECT_EQ(S16, getGCDType(V3S16, S16));
112   EXPECT_EQ(S16, getGCDType(S16, V3S16));
113 
114   EXPECT_EQ(V2S16, getGCDType(V2S16, V2S32));
115   EXPECT_EQ(S32, getGCDType(V2S32, V2S16));
116 
117   EXPECT_EQ(V4S8, getGCDType(V4S8, V2S32));
118   EXPECT_EQ(S32, getGCDType(V2S32, V4S8));
119 
120   // Test cases where neither element type nicely divides.
121   EXPECT_EQ(LLT::scalar(3), getGCDType(LLT::vector(3, 5), LLT::vector(2, 6)));
122   EXPECT_EQ(LLT::scalar(3), getGCDType(LLT::vector(2, 6), LLT::vector(3, 5)));
123 
124   // Have to go smaller than a pointer element.
125   EXPECT_EQ(LLT::scalar(3), getGCDType(LLT::vector(2, LLT::pointer(3, 6)),
126                                        LLT::vector(3, 5)));
127   EXPECT_EQ(LLT::scalar(3), getGCDType(LLT::vector(3, 5),
128                                        LLT::vector(2, LLT::pointer(3, 6))));
129 
130   EXPECT_EQ(V4S8, getGCDType(V4S8, S32));
131   EXPECT_EQ(S32, getGCDType(S32, V4S8));
132   EXPECT_EQ(V4S8, getGCDType(V4S8, P1));
133   EXPECT_EQ(P1, getGCDType(P1, V4S8));
134 
135   EXPECT_EQ(V2S8, getGCDType(V2S8, V4S16));
136   EXPECT_EQ(S16, getGCDType(V4S16, V2S8));
137 
138   EXPECT_EQ(S8, getGCDType(V2S8, LLT::vector(4, 2)));
139   EXPECT_EQ(LLT::vector(4, 2), getGCDType(LLT::vector(4, 2), S8));
140 
141 
142   EXPECT_EQ(LLT::pointer(4, 8), getGCDType(LLT::vector(2, LLT::pointer(4, 8)),
143                                            LLT::vector(4, 2)));
144 
145   EXPECT_EQ(LLT::vector(4, 2), getGCDType(LLT::vector(4, 2),
146                                           LLT::vector(2, LLT::pointer(4, 8))));
147 
148   EXPECT_EQ(LLT::scalar(4), getGCDType(LLT::vector(3, 4), S8));
149   EXPECT_EQ(LLT::scalar(4), getGCDType(S8, LLT::vector(3, 4)));
150 }
151 
152 TEST(GISelUtilsTest, getLCMType) {
153   EXPECT_EQ(S1, getLCMType(S1, S1));
154   EXPECT_EQ(S32, getLCMType(S32, S1));
155   EXPECT_EQ(S32, getLCMType(S1, S32));
156   EXPECT_EQ(S32, getLCMType(S32, S32));
157 
158   EXPECT_EQ(S32, getLCMType(S32, S16));
159   EXPECT_EQ(S32, getLCMType(S16, S32));
160 
161   EXPECT_EQ(S64, getLCMType(S64, P0));
162   EXPECT_EQ(P0, getLCMType(P0, S64));
163 
164   EXPECT_EQ(P0, getLCMType(S32, P0));
165   EXPECT_EQ(P0, getLCMType(P0, S32));
166 
167   EXPECT_EQ(S32, getLCMType(S32, P1));
168   EXPECT_EQ(P1, getLCMType(P1, S32));
169   EXPECT_EQ(P0, getLCMType(P0, P0));
170   EXPECT_EQ(P1, getLCMType(P1, P1));
171 
172   EXPECT_EQ(P0, getLCMType(P0, P1));
173   EXPECT_EQ(P0, getLCMType(P1, P0));
174 
175   EXPECT_EQ(V2S32, getLCMType(V2S32, V2S32));
176   EXPECT_EQ(V2S32, getLCMType(V2S32, S32));
177   EXPECT_EQ(V2S32, getLCMType(S32, V2S32));
178   EXPECT_EQ(V2S32, getLCMType(V2S32, V2S32));
179   EXPECT_EQ(V6S32, getLCMType(V2S32, V3S32));
180   EXPECT_EQ(V6S32, getLCMType(V3S32, V2S32));
181   EXPECT_EQ(LLT::vector(12, S32), getLCMType(V4S32, V3S32));
182   EXPECT_EQ(LLT::vector(12, S32), getLCMType(V3S32, V4S32));
183 
184   EXPECT_EQ(V2P0, getLCMType(V2P0, V2P0));
185   EXPECT_EQ(V2P0, getLCMType(V2P0, P0));
186   EXPECT_EQ(V2P0, getLCMType(P0, V2P0));
187   EXPECT_EQ(V2P0, getLCMType(V2P0, V2P0));
188   EXPECT_EQ(V6P0, getLCMType(V2P0, V3P0));
189   EXPECT_EQ(V6P0, getLCMType(V3P0, V2P0));
190   EXPECT_EQ(LLT::vector(12, P0), getLCMType(V4P0, V3P0));
191   EXPECT_EQ(LLT::vector(12, P0), getLCMType(V3P0, V4P0));
192 
193   EXPECT_EQ(LLT::vector(12, S64), getLCMType(V4S64, V3P0));
194   EXPECT_EQ(LLT::vector(12, P0), getLCMType(V3P0, V4S64));
195 
196   EXPECT_EQ(LLT::vector(12, P0), getLCMType(V4P0, V3S64));
197   EXPECT_EQ(LLT::vector(12, S64), getLCMType(V3S64, V4P0));
198 
199   EXPECT_EQ(V2P0, getLCMType(V2P0, S32));
200   EXPECT_EQ(V4S32, getLCMType(S32, V2P0));
201   EXPECT_EQ(V2P0, getLCMType(V2P0, S64));
202   EXPECT_EQ(V2S64, getLCMType(S64, V2P0));
203 
204 
205   EXPECT_EQ(V2P0, getLCMType(V2P0, V2P1));
206   EXPECT_EQ(V4P1, getLCMType(V2P1, V2P0));
207 
208   EXPECT_EQ(V2P0, getLCMType(V2P0, V4P1));
209   EXPECT_EQ(V4P1, getLCMType(V4P1, V2P0));
210 
211 
212   EXPECT_EQ(V2S32, getLCMType(V2S32, S64));
213   EXPECT_EQ(S64, getLCMType(S64, V2S32));
214 
215   EXPECT_EQ(V4S16, getLCMType(V4S16, V2S32));
216   EXPECT_EQ(V2S32, getLCMType(V2S32, V4S16));
217 
218   EXPECT_EQ(V2S32, getLCMType(V2S32, V4S8));
219   EXPECT_EQ(V8S8, getLCMType(V4S8, V2S32));
220 
221   EXPECT_EQ(V2S16, getLCMType(V2S16, V4S8));
222   EXPECT_EQ(V4S8, getLCMType(V4S8, V2S16));
223 
224   EXPECT_EQ(LLT::vector(6, S16), getLCMType(V3S16, V4S8));
225   EXPECT_EQ(LLT::vector(12, S8), getLCMType(V4S8, V3S16));
226   EXPECT_EQ(V4S16, getLCMType(V4S16, V4S8));
227   EXPECT_EQ(V8S8, getLCMType(V4S8, V4S16));
228 
229   EXPECT_EQ(LLT::vector(6, 4), getLCMType(LLT::vector(3, 4), S8));
230   EXPECT_EQ(LLT::vector(3, 8), getLCMType(S8, LLT::vector(3, 4)));
231 
232   EXPECT_EQ(LLT::vector(6, 4),
233             getLCMType(LLT::vector(3, 4), LLT::pointer(4, 8)));
234   EXPECT_EQ(LLT::vector(3, LLT::pointer(4, 8)),
235             getLCMType(LLT::pointer(4, 8), LLT::vector(3, 4)));
236 
237   EXPECT_EQ(V2S64, getLCMType(V2S64, P0));
238   EXPECT_EQ(V2P0, getLCMType(P0, V2S64));
239 
240   EXPECT_EQ(V2S64, getLCMType(V2S64, P1));
241   EXPECT_EQ(V4P1, getLCMType(P1, V2S64));
242 }
243 
244 }
245