1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc < %s -mtriple=riscv32 -mattr=+m | FileCheck %s --check-prefix=RV32I
3 ; RUN: llc < %s -mtriple=riscv64 -mattr=+m | FileCheck %s --check-prefix=RV64I
4 ; RUN: llc < %s -mtriple=riscv32 -mattr=+m,+zbb | FileCheck %s --check-prefix=RV32IZbb
5 ; RUN: llc < %s -mtriple=riscv64 -mattr=+m,+zbb | FileCheck %s --check-prefix=RV64IZbb
7 declare i4 @llvm.usub.sat.i4(i4, i4)
8 declare i8 @llvm.usub.sat.i8(i8, i8)
9 declare i16 @llvm.usub.sat.i16(i16, i16)
10 declare i32 @llvm.usub.sat.i32(i32, i32)
11 declare i64 @llvm.usub.sat.i64(i64, i64)
13 define i32 @func32(i32 %x, i32 %y, i32 %z) nounwind {
14 ; RV32I-LABEL: func32:
16 ; RV32I-NEXT: mul a1, a1, a2
17 ; RV32I-NEXT: sub a1, a0, a1
18 ; RV32I-NEXT: sltu a0, a0, a1
19 ; RV32I-NEXT: addi a0, a0, -1
20 ; RV32I-NEXT: and a0, a0, a1
23 ; RV64I-LABEL: func32:
25 ; RV64I-NEXT: mul a1, a1, a2
26 ; RV64I-NEXT: subw a1, a0, a1
27 ; RV64I-NEXT: sext.w a0, a0
28 ; RV64I-NEXT: sltu a0, a0, a1
29 ; RV64I-NEXT: addi a0, a0, -1
30 ; RV64I-NEXT: and a0, a0, a1
33 ; RV32IZbb-LABEL: func32:
35 ; RV32IZbb-NEXT: mul a1, a1, a2
36 ; RV32IZbb-NEXT: maxu a0, a0, a1
37 ; RV32IZbb-NEXT: sub a0, a0, a1
40 ; RV64IZbb-LABEL: func32:
42 ; RV64IZbb-NEXT: mulw a1, a1, a2
43 ; RV64IZbb-NEXT: sext.w a0, a0
44 ; RV64IZbb-NEXT: maxu a0, a0, a1
45 ; RV64IZbb-NEXT: sub a0, a0, a1
48 %tmp = call i32 @llvm.usub.sat.i32(i32 %x, i32 %a)
52 define i64 @func64(i64 %x, i64 %y, i64 %z) nounwind {
53 ; RV32I-LABEL: func64:
55 ; RV32I-NEXT: sltu a2, a0, a4
56 ; RV32I-NEXT: sub a3, a1, a5
57 ; RV32I-NEXT: sub a2, a3, a2
58 ; RV32I-NEXT: sub a3, a0, a4
59 ; RV32I-NEXT: beq a2, a1, .LBB1_2
60 ; RV32I-NEXT: # %bb.1:
61 ; RV32I-NEXT: sltu a0, a1, a2
62 ; RV32I-NEXT: j .LBB1_3
63 ; RV32I-NEXT: .LBB1_2:
64 ; RV32I-NEXT: sltu a0, a0, a3
65 ; RV32I-NEXT: .LBB1_3:
66 ; RV32I-NEXT: addi a1, a0, -1
67 ; RV32I-NEXT: and a0, a1, a3
68 ; RV32I-NEXT: and a1, a1, a2
71 ; RV64I-LABEL: func64:
73 ; RV64I-NEXT: sub a1, a0, a2
74 ; RV64I-NEXT: sltu a0, a0, a1
75 ; RV64I-NEXT: addi a0, a0, -1
76 ; RV64I-NEXT: and a0, a0, a1
79 ; RV32IZbb-LABEL: func64:
81 ; RV32IZbb-NEXT: sltu a2, a0, a4
82 ; RV32IZbb-NEXT: sub a3, a1, a5
83 ; RV32IZbb-NEXT: sub a2, a3, a2
84 ; RV32IZbb-NEXT: sub a3, a0, a4
85 ; RV32IZbb-NEXT: beq a2, a1, .LBB1_2
86 ; RV32IZbb-NEXT: # %bb.1:
87 ; RV32IZbb-NEXT: sltu a0, a1, a2
88 ; RV32IZbb-NEXT: j .LBB1_3
89 ; RV32IZbb-NEXT: .LBB1_2:
90 ; RV32IZbb-NEXT: sltu a0, a0, a3
91 ; RV32IZbb-NEXT: .LBB1_3:
92 ; RV32IZbb-NEXT: addi a1, a0, -1
93 ; RV32IZbb-NEXT: and a0, a1, a3
94 ; RV32IZbb-NEXT: and a1, a1, a2
97 ; RV64IZbb-LABEL: func64:
99 ; RV64IZbb-NEXT: maxu a0, a0, a2
100 ; RV64IZbb-NEXT: sub a0, a0, a2
103 %tmp = call i64 @llvm.usub.sat.i64(i64 %x, i64 %z)
107 define i16 @func16(i16 %x, i16 %y, i16 %z) nounwind {
108 ; RV32I-LABEL: func16:
110 ; RV32I-NEXT: lui a3, 16
111 ; RV32I-NEXT: addi a3, a3, -1
112 ; RV32I-NEXT: and a0, a0, a3
113 ; RV32I-NEXT: mul a1, a1, a2
114 ; RV32I-NEXT: and a1, a1, a3
115 ; RV32I-NEXT: sub a1, a0, a1
116 ; RV32I-NEXT: sltu a0, a0, a1
117 ; RV32I-NEXT: addi a0, a0, -1
118 ; RV32I-NEXT: and a0, a0, a1
121 ; RV64I-LABEL: func16:
123 ; RV64I-NEXT: lui a3, 16
124 ; RV64I-NEXT: addiw a3, a3, -1
125 ; RV64I-NEXT: and a0, a0, a3
126 ; RV64I-NEXT: mul a1, a1, a2
127 ; RV64I-NEXT: and a1, a1, a3
128 ; RV64I-NEXT: sub a1, a0, a1
129 ; RV64I-NEXT: sltu a0, a0, a1
130 ; RV64I-NEXT: addi a0, a0, -1
131 ; RV64I-NEXT: and a0, a0, a1
134 ; RV32IZbb-LABEL: func16:
136 ; RV32IZbb-NEXT: zext.h a0, a0
137 ; RV32IZbb-NEXT: mul a1, a1, a2
138 ; RV32IZbb-NEXT: zext.h a1, a1
139 ; RV32IZbb-NEXT: maxu a0, a0, a1
140 ; RV32IZbb-NEXT: sub a0, a0, a1
143 ; RV64IZbb-LABEL: func16:
145 ; RV64IZbb-NEXT: zext.h a0, a0
146 ; RV64IZbb-NEXT: mul a1, a1, a2
147 ; RV64IZbb-NEXT: zext.h a1, a1
148 ; RV64IZbb-NEXT: maxu a0, a0, a1
149 ; RV64IZbb-NEXT: sub a0, a0, a1
152 %tmp = call i16 @llvm.usub.sat.i16(i16 %x, i16 %a)
156 define i8 @func8(i8 %x, i8 %y, i8 %z) nounwind {
157 ; RV32I-LABEL: func8:
159 ; RV32I-NEXT: andi a0, a0, 255
160 ; RV32I-NEXT: mul a1, a1, a2
161 ; RV32I-NEXT: andi a1, a1, 255
162 ; RV32I-NEXT: sub a1, a0, a1
163 ; RV32I-NEXT: sltu a0, a0, a1
164 ; RV32I-NEXT: addi a0, a0, -1
165 ; RV32I-NEXT: and a0, a0, a1
168 ; RV64I-LABEL: func8:
170 ; RV64I-NEXT: andi a0, a0, 255
171 ; RV64I-NEXT: mul a1, a1, a2
172 ; RV64I-NEXT: andi a1, a1, 255
173 ; RV64I-NEXT: sub a1, a0, a1
174 ; RV64I-NEXT: sltu a0, a0, a1
175 ; RV64I-NEXT: addi a0, a0, -1
176 ; RV64I-NEXT: and a0, a0, a1
179 ; RV32IZbb-LABEL: func8:
181 ; RV32IZbb-NEXT: andi a0, a0, 255
182 ; RV32IZbb-NEXT: mul a1, a1, a2
183 ; RV32IZbb-NEXT: andi a1, a1, 255
184 ; RV32IZbb-NEXT: maxu a0, a0, a1
185 ; RV32IZbb-NEXT: sub a0, a0, a1
188 ; RV64IZbb-LABEL: func8:
190 ; RV64IZbb-NEXT: andi a0, a0, 255
191 ; RV64IZbb-NEXT: mul a1, a1, a2
192 ; RV64IZbb-NEXT: andi a1, a1, 255
193 ; RV64IZbb-NEXT: maxu a0, a0, a1
194 ; RV64IZbb-NEXT: sub a0, a0, a1
197 %tmp = call i8 @llvm.usub.sat.i8(i8 %x, i8 %a)
201 define i4 @func4(i4 %x, i4 %y, i4 %z) nounwind {
202 ; RV32I-LABEL: func4:
204 ; RV32I-NEXT: andi a0, a0, 15
205 ; RV32I-NEXT: mul a1, a1, a2
206 ; RV32I-NEXT: andi a1, a1, 15
207 ; RV32I-NEXT: sub a1, a0, a1
208 ; RV32I-NEXT: sltu a0, a0, a1
209 ; RV32I-NEXT: addi a0, a0, -1
210 ; RV32I-NEXT: and a0, a0, a1
213 ; RV64I-LABEL: func4:
215 ; RV64I-NEXT: andi a0, a0, 15
216 ; RV64I-NEXT: mul a1, a1, a2
217 ; RV64I-NEXT: andi a1, a1, 15
218 ; RV64I-NEXT: sub a1, a0, a1
219 ; RV64I-NEXT: sltu a0, a0, a1
220 ; RV64I-NEXT: addi a0, a0, -1
221 ; RV64I-NEXT: and a0, a0, a1
224 ; RV32IZbb-LABEL: func4:
226 ; RV32IZbb-NEXT: andi a0, a0, 15
227 ; RV32IZbb-NEXT: mul a1, a1, a2
228 ; RV32IZbb-NEXT: andi a1, a1, 15
229 ; RV32IZbb-NEXT: maxu a0, a0, a1
230 ; RV32IZbb-NEXT: sub a0, a0, a1
233 ; RV64IZbb-LABEL: func4:
235 ; RV64IZbb-NEXT: andi a0, a0, 15
236 ; RV64IZbb-NEXT: mul a1, a1, a2
237 ; RV64IZbb-NEXT: andi a1, a1, 15
238 ; RV64IZbb-NEXT: maxu a0, a0, a1
239 ; RV64IZbb-NEXT: sub a0, a0, a1
242 %tmp = call i4 @llvm.usub.sat.i4(i4 %x, i4 %a)