1 ; RUN: llc -enable-machine-outliner=never -verify-machineinstrs < %s -mtriple=aarch64-none-linux-gnu -mcpu=cyclone | FileCheck %s
2 ; RUN: llc -enable-machine-outliner=never -verify-machineinstrs < %s -mtriple=aarch64-none-linux-gnu -mattr=-fp-armv8 | FileCheck --check-prefix=CHECK-NOFP %s
7 define void @test_csel(i32 %lhs32, i32 %rhs32, i64 %lhs64) minsize {
8 ; CHECK-LABEL: test_csel:
10 %tst1 = icmp ugt i32 %lhs32, %rhs32
11 %val1 = select i1 %tst1, i32 42, i32 52
12 store i32 %val1, i32* @var32
13 ; CHECK-DAG: mov [[W52:w[0-9]+]], #{{52|0x34}}
14 ; CHECK-DAG: mov [[W42:w[0-9]+]], #{{42|0x2a}}
15 ; CHECK: csel {{w[0-9]+}}, [[W42]], [[W52]], hi
17 %rhs64 = sext i32 %rhs32 to i64
18 %tst2 = icmp sle i64 %lhs64, %rhs64
19 %val2 = select i1 %tst2, i64 %lhs64, i64 %rhs64
20 store i64 %val2, i64* @var64
21 ; CHECK: sxtw [[EXT_RHS:x[0-9]+]], {{[wx]}}[[RHS:[0-9]+]]
22 ; CHECK: cmp [[LHS:x[0-9]+]], w[[RHS]], sxtw
23 ; CHECK: csel {{x[0-9]+}}, [[LHS]], [[EXT_RHS]], le
29 define void @test_floatcsel(float %lhs32, float %rhs32, double %lhs64, double %rhs64) {
30 ; CHECK-LABEL: test_floatcsel:
32 %tst1 = fcmp one float %lhs32, %rhs32
33 ; CHECK: fcmp {{s[0-9]+}}, {{s[0-9]+}}
34 ; CHECK-NOFP-NOT: fcmp
35 %val1 = select i1 %tst1, i32 42, i32 52
36 store i32 %val1, i32* @var32
37 ; CHECK: mov [[W52:w[0-9]+]], #{{52|0x34}}
38 ; CHECK: mov [[W42:w[0-9]+]], #{{42|0x2a}}
39 ; CHECK: csel [[MAYBETRUE:w[0-9]+]], [[W42]], [[W52]], mi
40 ; CHECK: csel {{w[0-9]+}}, [[W42]], [[MAYBETRUE]], gt
43 %tst2 = fcmp ueq double %lhs64, %rhs64
44 ; CHECK: fcmp {{d[0-9]+}}, {{d[0-9]+}}
45 ; CHECK-NOFP-NOT: fcmp
46 %val2 = select i1 %tst2, i64 9, i64 15
47 store i64 %val2, i64* @var64
48 ; CHECK: mov w[[CONST15:[0-9]+]], #15
49 ; CHECK: mov {{[wx]}}[[CONST9:[0-9]+]], #{{9|0x9}}
50 ; CHECK: csel [[MAYBETRUE:x[0-9]+]], x[[CONST9]], x[[CONST15]], eq
51 ; CHECK: csel {{x[0-9]+}}, x[[CONST9]], [[MAYBETRUE]], vs
58 define void @test_csinc(i32 %lhs32, i32 %rhs32, i64 %lhs64) minsize {
59 ; CHECK-LABEL: test_csinc:
61 ; Note that commuting rhs and lhs in the select changes ugt to ule (i.e. hi to ls).
62 %tst1 = icmp ugt i32 %lhs32, %rhs32
63 %inc1 = add i32 %rhs32, 1
64 %val1 = select i1 %tst1, i32 %inc1, i32 %lhs32
65 store volatile i32 %val1, i32* @var32
66 ; CHECK: cmp [[LHS:w[0-9]+]], [[RHS:w[0-9]+]]
67 ; CHECK: csinc {{w[0-9]+}}, [[LHS]], [[RHS]], ls
69 %rhs2 = add i32 %rhs32, 42
70 %tst2 = icmp sle i32 %lhs32, %rhs2
71 %inc2 = add i32 %rhs32, 1
72 %val2 = select i1 %tst2, i32 %lhs32, i32 %inc2
73 store volatile i32 %val2, i32* @var32
74 ; CHECK: cmp [[LHS:w[0-9]+]], {{w[0-9]+}}
75 ; CHECK: csinc {{w[0-9]+}}, [[LHS]], {{w[0-9]+}}, le
77 ; Note that commuting rhs and lhs in the select changes ugt to ule (i.e. hi to ls).
78 %rhs3 = sext i32 %rhs32 to i64
79 %tst3 = icmp ugt i64 %lhs64, %rhs3
80 %inc3 = add i64 %rhs3, 1
81 %val3 = select i1 %tst3, i64 %inc3, i64 %lhs64
82 store volatile i64 %val3, i64* @var64
83 ; CHECK: cmp [[LHS:x[0-9]+]], {{w[0-9]+}}
84 ; CHECK: csinc {{x[0-9]+}}, [[LHS]], {{x[0-9]+}}, ls
86 %rhs4 = zext i32 %rhs32 to i64
87 %tst4 = icmp sle i64 %lhs64, %rhs4
88 %inc4 = add i64 %rhs4, 1
89 %val4 = select i1 %tst4, i64 %lhs64, i64 %inc4
90 store volatile i64 %val4, i64* @var64
91 ; CHECK: cmp [[LHS:x[0-9]+]], {{w[0-9]+}}
92 ; CHECK: csinc {{x[0-9]+}}, [[LHS]], {{x[0-9]+}}, le
98 define void @test_csinv(i32 %lhs32, i32 %rhs32, i64 %lhs64) minsize {
99 ; CHECK-LABEL: test_csinv:
101 ; Note that commuting rhs and lhs in the select changes ugt to ule (i.e. hi to ls).
102 %tst1 = icmp ugt i32 %lhs32, %rhs32
103 %inc1 = xor i32 -1, %rhs32
104 %val1 = select i1 %tst1, i32 %inc1, i32 %lhs32
105 store volatile i32 %val1, i32* @var32
106 ; CHECK: cmp [[LHS:w[0-9]+]], [[RHS:w[0-9]+]]
107 ; CHECK: csinv {{w[0-9]+}}, [[LHS]], [[RHS]], ls
109 %rhs2 = add i32 %rhs32, 42
110 %tst2 = icmp sle i32 %lhs32, %rhs2
111 %inc2 = xor i32 -1, %rhs32
112 %val2 = select i1 %tst2, i32 %lhs32, i32 %inc2
113 store volatile i32 %val2, i32* @var32
114 ; CHECK: cmp [[LHS:w[0-9]+]], {{w[0-9]+}}
115 ; CHECK: csinv {{w[0-9]+}}, [[LHS]], {{w[0-9]+}}, le
117 ; Note that commuting rhs and lhs in the select changes ugt to ule (i.e. hi to ls).
118 %rhs3 = sext i32 %rhs32 to i64
119 %tst3 = icmp ugt i64 %lhs64, %rhs3
120 %inc3 = xor i64 -1, %rhs3
121 %val3 = select i1 %tst3, i64 %inc3, i64 %lhs64
122 store volatile i64 %val3, i64* @var64
123 ; CHECK: cmp [[LHS:x[0-9]+]], {{w[0-9]+}}
124 ; CHECK: csinv {{x[0-9]+}}, [[LHS]], {{x[0-9]+}}, ls
126 %rhs4 = zext i32 %rhs32 to i64
127 %tst4 = icmp sle i64 %lhs64, %rhs4
128 %inc4 = xor i64 -1, %rhs4
129 %val4 = select i1 %tst4, i64 %lhs64, i64 %inc4
130 store volatile i64 %val4, i64* @var64
131 ; CHECK: cmp [[LHS:x[0-9]+]], {{w[0-9]+}}
132 ; CHECK: csinv {{x[0-9]+}}, [[LHS]], {{x[0-9]+}}, le
138 define void @test_csinv0(i32 %lhs32, i32 %rhs32, i64 %lhs64, i64 %rhs64) minsize {
139 ; CHECK-LABEL: test_csinv0:
141 %tst1 = icmp ugt i32 %lhs32, %rhs32
142 %val1 = select i1 %tst1, i32 0, i32 -1
143 store volatile i32 %val1, i32* @var32
144 ; CHECK: cmp [[LHS:w[0-9]+]], [[RHS:w[0-9]+]]
145 ; CHECK: csetm {{w[0-9]+}}, ls
147 %rhs2 = add i32 %rhs32, 42
148 %tst2 = icmp sle i32 %lhs32, %rhs2
149 %val2 = select i1 %tst2, i32 -1, i32 %rhs2
150 store volatile i32 %val2, i32* @var32
151 ; CHECK: cmp [[LHS2:w[0-9]+]], [[RHS2:w[0-9]+]]
152 ; CHECK: csinv {{w[0-9]+}}, [[RHS2]], wzr, gt
154 ; Note that commuting rhs and lhs in the select changes ugt to ule (i.e. hi to ls).
155 %rhs3 = mul i64 %rhs64, 19
156 %tst3 = icmp ugt i64 %lhs64, %rhs3
157 %val3 = select i1 %tst3, i64 %rhs3, i64 -1
158 store volatile i64 %val3, i64* @var64
159 ; CHECK: cmp [[LHS3:x[0-9]+]], [[RHS3:x[0-9]+]]
160 ; CHECK: csinv {{x[0-9]+}}, [[RHS3]], xzr, hi
166 define void @test_csneg(i32 %lhs32, i32 %rhs32, i64 %lhs64) minsize {
167 ; CHECK-LABEL: test_csneg:
169 ; Note that commuting rhs and lhs in the select changes ugt to ule (i.e. hi to ls).
170 %tst1 = icmp ugt i32 %lhs32, %rhs32
171 %inc1 = sub i32 0, %rhs32
172 %val1 = select i1 %tst1, i32 %inc1, i32 %lhs32
173 store volatile i32 %val1, i32* @var32
174 ; CHECK: cmp [[LHS:w[0-9]+]], [[RHS:w[0-9]+]]
175 ; CHECK: csneg {{w[0-9]+}}, [[LHS]], [[RHS]], ls
177 %rhs2 = add i32 %rhs32, 42
178 %tst2 = icmp sle i32 %lhs32, %rhs2
179 %inc2 = sub i32 0, %rhs32
180 %val2 = select i1 %tst2, i32 %lhs32, i32 %inc2
181 store volatile i32 %val2, i32* @var32
182 ; CHECK: cmp [[LHS:w[0-9]+]], {{w[0-9]+}}
183 ; CHECK: csneg {{w[0-9]+}}, [[LHS]], {{w[0-9]+}}, le
185 ; Note that commuting rhs and lhs in the select changes ugt to ule (i.e. hi to ls).
186 %rhs3 = sext i32 %rhs32 to i64
187 %tst3 = icmp ugt i64 %lhs64, %rhs3
188 %inc3 = sub i64 0, %rhs3
189 %val3 = select i1 %tst3, i64 %inc3, i64 %lhs64
190 store volatile i64 %val3, i64* @var64
191 ; CHECK: cmp [[LHS:x[0-9]+]], {{w[0-9]+}}
192 ; CHECK: csneg {{x[0-9]+}}, [[LHS]], {{x[0-9]+}}, ls
194 %rhs4 = zext i32 %rhs32 to i64
195 %tst4 = icmp sle i64 %lhs64, %rhs4
196 %inc4 = sub i64 0, %rhs4
197 %val4 = select i1 %tst4, i64 %lhs64, i64 %inc4
198 store volatile i64 %val4, i64* @var64
199 ; CHECK: cmp [[LHS:x[0-9]+]], {{w[0-9]+}}
200 ; CHECK: csneg {{x[0-9]+}}, [[LHS]], {{x[0-9]+}}, le
206 define void @test_cset(i32 %lhs, i32 %rhs, i64 %lhs64) {
207 ; CHECK-LABEL: test_cset:
209 ; N.b. code is not optimal here (32-bit csinc would be better) but
210 ; incoming DAG is too complex
211 %tst1 = icmp eq i32 %lhs, %rhs
212 %val1 = zext i1 %tst1 to i32
213 store i32 %val1, i32* @var32
214 ; CHECK: cmp {{w[0-9]+}}, {{w[0-9]+}}
215 ; CHECK: cset {{w[0-9]+}}, eq
217 %rhs64 = sext i32 %rhs to i64
218 %tst2 = icmp ule i64 %lhs64, %rhs64
219 %val2 = zext i1 %tst2 to i64
220 store i64 %val2, i64* @var64
221 ; CHECK: cset {{w[0-9]+}}, ls
227 define void @test_csetm(i32 %lhs, i32 %rhs, i64 %lhs64) {
228 ; CHECK-LABEL: test_csetm:
230 %tst1 = icmp eq i32 %lhs, %rhs
231 %val1 = sext i1 %tst1 to i32
232 store i32 %val1, i32* @var32
233 ; CHECK: cmp {{w[0-9]+}}, {{w[0-9]+}}
234 ; CHECK: csetm {{w[0-9]+}}, eq
236 %rhs64 = sext i32 %rhs to i64
237 %tst2 = icmp ule i64 %lhs64, %rhs64
238 %val2 = sext i1 %tst2 to i64
239 store i64 %val2, i64* @var64
240 ; CHECK: csetm {{x[0-9]+}}, ls
246 define <1 x i1> @test_wide_comparison(i32 %in) {
247 ; CHECK-LABEL: test_wide_comparison:
248 ; CHECK: cmp w0, #1234
251 %tmp = icmp sgt i32 %in, 1234
252 %res = select i1 %tmp, <1 x i1> <i1 1>, <1 x i1> zeroinitializer
256 define i32 @test_select_undef() {
257 ; CHECK-LABEL: test_select_undef:
259 %res = select i1 undef, i32 0, i32 42