1 ; This test is designed to run twice, once with function attributes and once
2 ; with target attributes added on the command line.
4 ; RUN: cat %s > %t.tgtattr
5 ; RUN: echo 'attributes #0 = { nounwind }' >> %t.tgtattr
6 ; RUN: llc -mtriple=riscv32 -mattr=+c -filetype=obj \
7 ; RUN: -disable-block-placement < %t.tgtattr \
8 ; RUN: | llvm-objdump -d --triple=riscv32 --mattr=+c -M no-aliases - \
9 ; RUN: | FileCheck -check-prefix=RV32IC %s
11 ; RUN: cat %s > %t.fnattr
12 ; RUN: echo 'attributes #0 = { nounwind "target-features"="+c" }' >> %t.fnattr
13 ; RUN: llc -mtriple=riscv32 -filetype=obj \
14 ; RUN: -disable-block-placement < %t.fnattr \
15 ; RUN: | llvm-objdump -d --triple=riscv32 --mattr=+c -M no-aliases - \
16 ; RUN: | FileCheck -check-prefix=RV32IC %s
18 ; This acts as a sanity check for the codegen instruction compression path,
19 ; verifying that the assembled file contains compressed instructions when
20 ; expected. Handling of the compressed ISA is implemented so the same
21 ; transformation patterns should be used whether compressing an input .s file or
22 ; compressing codegen output. This file contains sanity checks to ensure that is
23 ; working as expected. Particular care should be taken to test pseudo
26 ; Note: TODOs in this file are only appropriate if they highlight a case where
27 ; a generated instruction that can be compressed by an existing pattern isn't.
28 ; It may be useful to have tests that indicate where better compression would be
29 ; possible if alternative codegen choices were made, but they belong in a
30 ; different test file.
32 define i32 @simple_arith(i32 %a, i32 %b) #0 {
33 ; RV32IC-LABEL: <simple_arith>:
34 ; RV32IC: addi a2, a0, 1
35 ; RV32IC-NEXT: c.andi a2, 11
36 ; RV32IC-NEXT: c.slli a2, 7
37 ; RV32IC-NEXT: c.srai a1, 9
38 ; RV32IC-NEXT: c.add a1, a2
39 ; RV32IC-NEXT: sub a0, a1, a0
40 ; RV32IC-NEXT: c.jr ra
50 define i32 @select(i32 %a, i32 *%b) #0 {
51 ; RV32IC-LABEL: <select>:
52 ; RV32IC: c.lw a2, 0(a1)
53 ; RV32IC-NEXT: c.beqz a2, 0x18
54 ; RV32IC-NEXT: c.mv a0, a2
55 ; RV32IC-NEXT: c.lw a2, 0(a1)
56 ; RV32IC-NEXT: c.bnez a2, 0x1e
57 ; RV32IC-NEXT: c.mv a0, a2
58 ; RV32IC-NEXT: c.lw a2, 0(a1)
59 ; RV32IC-NEXT: bltu a2, a0, 0x26
60 ; RV32IC-NEXT: c.mv a0, a2
61 ; RV32IC-NEXT: c.lw a2, 0(a1)
62 ; RV32IC-NEXT: bgeu a0, a2, 0x2e
63 ; RV32IC-NEXT: c.mv a0, a2
64 ; RV32IC-NEXT: c.lw a2, 0(a1)
65 ; RV32IC-NEXT: bltu a0, a2, 0x36
66 ; RV32IC-NEXT: c.mv a0, a2
67 ; RV32IC-NEXT: c.lw a2, 0(a1)
68 ; RV32IC-NEXT: bgeu a2, a0, 0x3e
69 ; RV32IC-NEXT: c.mv a0, a2
70 ; RV32IC-NEXT: c.lw a2, 0(a1)
71 ; RV32IC-NEXT: blt a2, a0, 0x46
72 ; RV32IC-NEXT: c.mv a0, a2
73 ; RV32IC-NEXT: c.lw a2, 0(a1)
74 ; RV32IC-NEXT: bge a0, a2, 0x4e
75 ; RV32IC-NEXT: c.mv a0, a2
76 ; RV32IC-NEXT: c.lw a2, 0(a1)
77 ; RV32IC-NEXT: blt a0, a2, 0x56
78 ; RV32IC-NEXT: c.mv a0, a2
79 ; RV32IC-NEXT: c.lw a1, 0(a1)
80 ; RV32IC-NEXT: bge a1, a0, 0x5e
81 ; RV32IC-NEXT: c.mv a0, a1
82 ; RV32IC-NEXT: c.jr ra
83 %val1 = load volatile i32, i32* %b
84 %tst1 = icmp eq i32 0, %val1
85 %val2 = select i1 %tst1, i32 %a, i32 %val1
87 %val3 = load volatile i32, i32* %b
88 %tst2 = icmp ne i32 0, %val3
89 %val4 = select i1 %tst2, i32 %val2, i32 %val3
91 %val5 = load volatile i32, i32* %b
92 %tst3 = icmp ugt i32 %val4, %val5
93 %val6 = select i1 %tst3, i32 %val4, i32 %val5
95 %val7 = load volatile i32, i32* %b
96 %tst4 = icmp uge i32 %val6, %val7
97 %val8 = select i1 %tst4, i32 %val6, i32 %val7
99 %val9 = load volatile i32, i32* %b
100 %tst5 = icmp ult i32 %val8, %val9
101 %val10 = select i1 %tst5, i32 %val8, i32 %val9
103 %val11 = load volatile i32, i32* %b
104 %tst6 = icmp ule i32 %val10, %val11
105 %val12 = select i1 %tst6, i32 %val10, i32 %val11
107 %val13 = load volatile i32, i32* %b
108 %tst7 = icmp sgt i32 %val12, %val13
109 %val14 = select i1 %tst7, i32 %val12, i32 %val13
111 %val15 = load volatile i32, i32* %b
112 %tst8 = icmp sge i32 %val14, %val15
113 %val16 = select i1 %tst8, i32 %val14, i32 %val15
115 %val17 = load volatile i32, i32* %b
116 %tst9 = icmp slt i32 %val16, %val17
117 %val18 = select i1 %tst9, i32 %val16, i32 %val17
119 %val19 = load volatile i32, i32* %b
120 %tst10 = icmp sle i32 %val18, %val19
121 %val20 = select i1 %tst10, i32 %val18, i32 %val19
126 define i32 @pos_tiny() #0 {
127 ; RV32IC-LABEL: <pos_tiny>:
128 ; RV32IC: c.li a0, 18
129 ; RV32IC-NEXT: c.jr ra
133 define i32 @pos_i32() #0 {
134 ; RV32IC-LABEL: <pos_i32>:
135 ; RV32IC: lui a0, 423811
136 ; RV32IC-NEXT: addi a0, a0, -1297
137 ; RV32IC-NEXT: c.jr ra
141 define i32 @pos_i32_half_compressible() #0 {
142 ; RV32IC-LABEL: <pos_i32_half_compressible>:
143 ; RV32IC: lui a0, 423810
144 ; RV32IC-NEXT: c.addi a0, 28
145 ; RV32IC-NEXT: c.jr ra
149 define i32 @neg_tiny() #0 {
150 ; RV32IC-LABEL: <neg_tiny>:
151 ; RV32IC: c.li a0, -19
152 ; RV32IC-NEXT: c.jr ra
156 define i32 @neg_i32() #0 {
157 ; RV32IC-LABEL: <neg_i32>:
158 ; RV32IC: lui a0, 912092
159 ; RV32IC-NEXT: addi a0, a0, -273
160 ; RV32IC-NEXT: c.jr ra
164 define i32 @pos_i32_hi20_only() #0 {
165 ; RV32IC-LABEL: <pos_i32_hi20_only>:
166 ; RV32IC: c.lui a0, 16
167 ; RV32IC-NEXT: c.jr ra
171 define i32 @neg_i32_hi20_only() #0 {
172 ; RV32IC-LABEL: <neg_i32_hi20_only>:
173 ; RV32IC: c.lui a0, 1048560
174 ; RV32IC-NEXT: c.jr ra