1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc -mtriple=riscv32 -verify-machineinstrs < %s | FileCheck -check-prefix=RV32I %s
3 ; RUN: llc -mtriple=riscv64 -verify-machineinstrs < %s | FileCheck -check-prefix=RV64I %s
6 ; fixed avg(x,y) = sub(or(x,y),lshr(xor(x,y),1))
8 ; ext avg(x,y) = trunc(lshr(add(zext(x),zext(y),1),1))
11 define i8 @test_fixed_i8(i8 %a0, i8 %a1) nounwind {
12 ; RV32I-LABEL: test_fixed_i8:
14 ; RV32I-NEXT: andi a1, a1, 255
15 ; RV32I-NEXT: andi a0, a0, 255
16 ; RV32I-NEXT: add a0, a0, a1
17 ; RV32I-NEXT: addi a0, a0, 1
18 ; RV32I-NEXT: srli a0, a0, 1
21 ; RV64I-LABEL: test_fixed_i8:
23 ; RV64I-NEXT: andi a1, a1, 255
24 ; RV64I-NEXT: andi a0, a0, 255
25 ; RV64I-NEXT: add a0, a0, a1
26 ; RV64I-NEXT: addi a0, a0, 1
27 ; RV64I-NEXT: srli a0, a0, 1
30 %xor = xor i8 %a0, %a1
31 %shift = lshr i8 %xor, 1
32 %res = sub i8 %or, %shift
36 define i8 @test_ext_i8(i8 %a0, i8 %a1) nounwind {
37 ; RV32I-LABEL: test_ext_i8:
39 ; RV32I-NEXT: andi a1, a1, 255
40 ; RV32I-NEXT: andi a0, a0, 255
41 ; RV32I-NEXT: add a0, a0, a1
42 ; RV32I-NEXT: addi a0, a0, 1
43 ; RV32I-NEXT: srli a0, a0, 1
46 ; RV64I-LABEL: test_ext_i8:
48 ; RV64I-NEXT: andi a1, a1, 255
49 ; RV64I-NEXT: andi a0, a0, 255
50 ; RV64I-NEXT: add a0, a0, a1
51 ; RV64I-NEXT: addi a0, a0, 1
52 ; RV64I-NEXT: srli a0, a0, 1
54 %x0 = zext i8 %a0 to i16
55 %x1 = zext i8 %a1 to i16
56 %sum = add i16 %x0, %x1
57 %sum1 = add i16 %sum, 1
58 %shift = lshr i16 %sum1, 1
59 %res = trunc i16 %shift to i8
63 define i16 @test_fixed_i16(i16 %a0, i16 %a1) nounwind {
64 ; RV32I-LABEL: test_fixed_i16:
66 ; RV32I-NEXT: lui a2, 16
67 ; RV32I-NEXT: addi a2, a2, -1
68 ; RV32I-NEXT: and a1, a1, a2
69 ; RV32I-NEXT: and a0, a0, a2
70 ; RV32I-NEXT: add a0, a0, a1
71 ; RV32I-NEXT: addi a0, a0, 1
72 ; RV32I-NEXT: srli a0, a0, 1
75 ; RV64I-LABEL: test_fixed_i16:
77 ; RV64I-NEXT: lui a2, 16
78 ; RV64I-NEXT: addiw a2, a2, -1
79 ; RV64I-NEXT: and a1, a1, a2
80 ; RV64I-NEXT: and a0, a0, a2
81 ; RV64I-NEXT: add a0, a0, a1
82 ; RV64I-NEXT: addi a0, a0, 1
83 ; RV64I-NEXT: srli a0, a0, 1
86 %xor = xor i16 %a0, %a1
87 %shift = lshr i16 %xor, 1
88 %res = sub i16 %or, %shift
92 define i16 @test_ext_i16(i16 %a0, i16 %a1) nounwind {
93 ; RV32I-LABEL: test_ext_i16:
95 ; RV32I-NEXT: lui a2, 16
96 ; RV32I-NEXT: addi a2, a2, -1
97 ; RV32I-NEXT: and a1, a1, a2
98 ; RV32I-NEXT: and a0, a0, a2
99 ; RV32I-NEXT: add a0, a0, a1
100 ; RV32I-NEXT: addi a0, a0, 1
101 ; RV32I-NEXT: srli a0, a0, 1
104 ; RV64I-LABEL: test_ext_i16:
106 ; RV64I-NEXT: lui a2, 16
107 ; RV64I-NEXT: addiw a2, a2, -1
108 ; RV64I-NEXT: and a1, a1, a2
109 ; RV64I-NEXT: and a0, a0, a2
110 ; RV64I-NEXT: add a0, a0, a1
111 ; RV64I-NEXT: addi a0, a0, 1
112 ; RV64I-NEXT: srli a0, a0, 1
114 %x0 = zext i16 %a0 to i32
115 %x1 = zext i16 %a1 to i32
116 %sum = add i32 %x0, %x1
117 %sum1 = add i32 %sum, 1
118 %shift = lshr i32 %sum1, 1
119 %res = trunc i32 %shift to i16
123 define i32 @test_fixed_i32(i32 %a0, i32 %a1) nounwind {
124 ; RV32I-LABEL: test_fixed_i32:
126 ; RV32I-NEXT: or a2, a0, a1
127 ; RV32I-NEXT: xor a0, a0, a1
128 ; RV32I-NEXT: srli a0, a0, 1
129 ; RV32I-NEXT: sub a0, a2, a0
132 ; RV64I-LABEL: test_fixed_i32:
134 ; RV64I-NEXT: slli a1, a1, 32
135 ; RV64I-NEXT: srli a1, a1, 32
136 ; RV64I-NEXT: slli a0, a0, 32
137 ; RV64I-NEXT: srli a0, a0, 32
138 ; RV64I-NEXT: add a0, a0, a1
139 ; RV64I-NEXT: addi a0, a0, 1
140 ; RV64I-NEXT: srli a0, a0, 1
142 %or = or i32 %a0, %a1
143 %xor = xor i32 %a1, %a0
144 %shift = lshr i32 %xor, 1
145 %res = sub i32 %or, %shift
149 define i32 @test_ext_i32(i32 %a0, i32 %a1) nounwind {
150 ; RV32I-LABEL: test_ext_i32:
152 ; RV32I-NEXT: or a2, a0, a1
153 ; RV32I-NEXT: xor a0, a0, a1
154 ; RV32I-NEXT: srli a0, a0, 1
155 ; RV32I-NEXT: sub a0, a2, a0
158 ; RV64I-LABEL: test_ext_i32:
160 ; RV64I-NEXT: slli a1, a1, 32
161 ; RV64I-NEXT: srli a1, a1, 32
162 ; RV64I-NEXT: slli a0, a0, 32
163 ; RV64I-NEXT: srli a0, a0, 32
164 ; RV64I-NEXT: add a0, a0, a1
165 ; RV64I-NEXT: addi a0, a0, 1
166 ; RV64I-NEXT: srli a0, a0, 1
168 %x0 = zext i32 %a0 to i64
169 %x1 = zext i32 %a1 to i64
170 %sum = add i64 %x0, %x1
171 %sum1 = add i64 %sum, 1
172 %shift = lshr i64 %sum1, 1
173 %res = trunc i64 %shift to i32
177 define i64 @test_fixed_i64(i64 %a0, i64 %a1) nounwind {
178 ; RV32I-LABEL: test_fixed_i64:
180 ; RV32I-NEXT: or a4, a1, a3
181 ; RV32I-NEXT: xor a1, a1, a3
182 ; RV32I-NEXT: srli a3, a1, 1
183 ; RV32I-NEXT: sub a4, a4, a3
184 ; RV32I-NEXT: slli a1, a1, 31
185 ; RV32I-NEXT: xor a3, a0, a2
186 ; RV32I-NEXT: srli a3, a3, 1
187 ; RV32I-NEXT: or a3, a3, a1
188 ; RV32I-NEXT: or a0, a0, a2
189 ; RV32I-NEXT: sltu a1, a0, a3
190 ; RV32I-NEXT: sub a1, a4, a1
191 ; RV32I-NEXT: sub a0, a0, a3
194 ; RV64I-LABEL: test_fixed_i64:
196 ; RV64I-NEXT: or a2, a0, a1
197 ; RV64I-NEXT: xor a0, a0, a1
198 ; RV64I-NEXT: srli a0, a0, 1
199 ; RV64I-NEXT: sub a0, a2, a0
201 %or = or i64 %a0, %a1
202 %xor = xor i64 %a1, %a0
203 %shift = lshr i64 %xor, 1
204 %res = sub i64 %or, %shift
208 define i64 @test_ext_i64(i64 %a0, i64 %a1) nounwind {
209 ; RV32I-LABEL: test_ext_i64:
211 ; RV32I-NEXT: or a4, a1, a3
212 ; RV32I-NEXT: xor a1, a1, a3
213 ; RV32I-NEXT: srli a3, a1, 1
214 ; RV32I-NEXT: sub a4, a4, a3
215 ; RV32I-NEXT: slli a1, a1, 31
216 ; RV32I-NEXT: xor a3, a0, a2
217 ; RV32I-NEXT: srli a3, a3, 1
218 ; RV32I-NEXT: or a3, a3, a1
219 ; RV32I-NEXT: or a0, a0, a2
220 ; RV32I-NEXT: sltu a1, a0, a3
221 ; RV32I-NEXT: sub a1, a4, a1
222 ; RV32I-NEXT: sub a0, a0, a3
225 ; RV64I-LABEL: test_ext_i64:
227 ; RV64I-NEXT: or a2, a0, a1
228 ; RV64I-NEXT: xor a0, a0, a1
229 ; RV64I-NEXT: srli a0, a0, 1
230 ; RV64I-NEXT: sub a0, a2, a0
232 %x0 = zext i64 %a0 to i128
233 %x1 = zext i64 %a1 to i128
234 %sum = add i128 %x0, %x1
235 %sum1 = add i128 %sum, 1
236 %shift = lshr i128 %sum1, 1
237 %res = trunc i128 %shift to i64