xref: /llvm-project/llvm/test/CodeGen/LoongArch/bitreverse.ll (revision 9d4f7f44b64d87d1068859906f43b7ce03a7388b) 
1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2; RUN: llc --mtriple=loongarch32 -mattr=+d --verify-machineinstrs < %s \
3; RUN:   | FileCheck %s --check-prefix=LA32
4; RUN: llc --mtriple=loongarch64 -mattr=+d --verify-machineinstrs < %s \
5; RUN:   | FileCheck %s --check-prefix=LA64
6
7declare i7 @llvm.bitreverse.i7(i7)
8declare i8 @llvm.bitreverse.i8(i8)
9declare i16 @llvm.bitreverse.i16(i16)
10declare i24 @llvm.bitreverse.i24(i24)
11declare i32 @llvm.bitreverse.i32(i32)
12declare i48 @llvm.bitreverse.i48(i48)
13declare i64 @llvm.bitreverse.i64(i64)
14declare i77 @llvm.bitreverse.i77(i77)
15declare i128 @llvm.bitreverse.i128(i128)
16
17define i8 @test_bitreverse_i8(i8 %a) nounwind {
18; LA32-LABEL: test_bitreverse_i8:
19; LA32:       # %bb.0:
20; LA32-NEXT:    bitrev.4b $a0, $a0
21; LA32-NEXT:    ret
22;
23; LA64-LABEL: test_bitreverse_i8:
24; LA64:       # %bb.0:
25; LA64-NEXT:    bitrev.4b $a0, $a0
26; LA64-NEXT:    ret
27  %tmp = call i8 @llvm.bitreverse.i8(i8 %a)
28  ret i8 %tmp
29}
30
31define i16 @test_bitreverse_i16(i16 %a) nounwind {
32; LA32-LABEL: test_bitreverse_i16:
33; LA32:       # %bb.0:
34; LA32-NEXT:    bitrev.w $a0, $a0
35; LA32-NEXT:    srli.w $a0, $a0, 16
36; LA32-NEXT:    ret
37;
38; LA64-LABEL: test_bitreverse_i16:
39; LA64:       # %bb.0:
40; LA64-NEXT:    bitrev.d $a0, $a0
41; LA64-NEXT:    srli.d $a0, $a0, 48
42; LA64-NEXT:    ret
43  %tmp = call i16 @llvm.bitreverse.i16(i16 %a)
44  ret i16 %tmp
45}
46
47define i32 @test_bitreverse_i32(i32 %a) nounwind {
48; LA32-LABEL: test_bitreverse_i32:
49; LA32:       # %bb.0:
50; LA32-NEXT:    bitrev.w $a0, $a0
51; LA32-NEXT:    ret
52;
53; LA64-LABEL: test_bitreverse_i32:
54; LA64:       # %bb.0:
55; LA64-NEXT:    bitrev.w $a0, $a0
56; LA64-NEXT:    ret
57  %tmp = call i32 @llvm.bitreverse.i32(i32 %a)
58  ret i32 %tmp
59}
60
61define i64 @test_bitreverse_i64(i64 %a) nounwind {
62; LA32-LABEL: test_bitreverse_i64:
63; LA32:       # %bb.0:
64; LA32-NEXT:    bitrev.w $a2, $a1
65; LA32-NEXT:    bitrev.w $a1, $a0
66; LA32-NEXT:    move $a0, $a2
67; LA32-NEXT:    ret
68;
69; LA64-LABEL: test_bitreverse_i64:
70; LA64:       # %bb.0:
71; LA64-NEXT:    bitrev.d $a0, $a0
72; LA64-NEXT:    ret
73  %tmp = call i64 @llvm.bitreverse.i64(i64 %a)
74  ret i64 %tmp
75}
76
77;; Bitreverse on non-native integer widths.
78
79define i7 @test_bitreverse_i7(i7 %a) nounwind {
80; LA32-LABEL: test_bitreverse_i7:
81; LA32:       # %bb.0:
82; LA32-NEXT:    bitrev.w $a0, $a0
83; LA32-NEXT:    srli.w $a0, $a0, 25
84; LA32-NEXT:    ret
85;
86; LA64-LABEL: test_bitreverse_i7:
87; LA64:       # %bb.0:
88; LA64-NEXT:    bitrev.d $a0, $a0
89; LA64-NEXT:    srli.d $a0, $a0, 57
90; LA64-NEXT:    ret
91  %tmp = call i7 @llvm.bitreverse.i7(i7 %a)
92  ret i7 %tmp
93}
94
95define i24 @test_bitreverse_i24(i24 %a) nounwind {
96; LA32-LABEL: test_bitreverse_i24:
97; LA32:       # %bb.0:
98; LA32-NEXT:    bitrev.w $a0, $a0
99; LA32-NEXT:    srli.w $a0, $a0, 8
100; LA32-NEXT:    ret
101;
102; LA64-LABEL: test_bitreverse_i24:
103; LA64:       # %bb.0:
104; LA64-NEXT:    bitrev.d $a0, $a0
105; LA64-NEXT:    srli.d $a0, $a0, 40
106; LA64-NEXT:    ret
107  %tmp = call i24 @llvm.bitreverse.i24(i24 %a)
108  ret i24 %tmp
109}
110
111define i48 @test_bitreverse_i48(i48 %a) nounwind {
112; LA32-LABEL: test_bitreverse_i48:
113; LA32:       # %bb.0:
114; LA32-NEXT:    bitrev.w $a2, $a0
115; LA32-NEXT:    bitrev.w $a0, $a1
116; LA32-NEXT:    bytepick.w $a0, $a0, $a2, 2
117; LA32-NEXT:    srli.w $a1, $a2, 16
118; LA32-NEXT:    ret
119;
120; LA64-LABEL: test_bitreverse_i48:
121; LA64:       # %bb.0:
122; LA64-NEXT:    bitrev.d $a0, $a0
123; LA64-NEXT:    srli.d $a0, $a0, 16
124; LA64-NEXT:    ret
125  %tmp = call i48 @llvm.bitreverse.i48(i48 %a)
126  ret i48 %tmp
127}
128
129define i77 @test_bitreverse_i77(i77 %a) nounwind {
130; LA32-LABEL: test_bitreverse_i77:
131; LA32:       # %bb.0:
132; LA32-NEXT:    ld.w $a2, $a1, 4
133; LA32-NEXT:    ld.w $a3, $a1, 8
134; LA32-NEXT:    ld.w $a1, $a1, 0
135; LA32-NEXT:    bitrev.w $a2, $a2
136; LA32-NEXT:    slli.w $a4, $a2, 13
137; LA32-NEXT:    bitrev.w $a3, $a3
138; LA32-NEXT:    srli.w $a3, $a3, 19
139; LA32-NEXT:    or $a3, $a3, $a4
140; LA32-NEXT:    srli.w $a2, $a2, 19
141; LA32-NEXT:    bitrev.w $a1, $a1
142; LA32-NEXT:    slli.w $a4, $a1, 13
143; LA32-NEXT:    or $a2, $a4, $a2
144; LA32-NEXT:    srli.w $a1, $a1, 19
145; LA32-NEXT:    st.h $a1, $a0, 8
146; LA32-NEXT:    st.w $a2, $a0, 4
147; LA32-NEXT:    st.w $a3, $a0, 0
148; LA32-NEXT:    ret
149;
150; LA64-LABEL: test_bitreverse_i77:
151; LA64:       # %bb.0:
152; LA64-NEXT:    bitrev.d $a2, $a0
153; LA64-NEXT:    slli.d $a0, $a2, 13
154; LA64-NEXT:    bitrev.d $a1, $a1
155; LA64-NEXT:    srli.d $a1, $a1, 51
156; LA64-NEXT:    or $a0, $a1, $a0
157; LA64-NEXT:    srli.d $a1, $a2, 51
158; LA64-NEXT:    ret
159  %tmp = call i77 @llvm.bitreverse.i77(i77 %a)
160  ret i77 %tmp
161}
162
163define i128 @test_bitreverse_i128(i128 %a) nounwind {
164; LA32-LABEL: test_bitreverse_i128:
165; LA32:       # %bb.0:
166; LA32-NEXT:    ld.w $a2, $a1, 12
167; LA32-NEXT:    ld.w $a3, $a1, 8
168; LA32-NEXT:    ld.w $a4, $a1, 4
169; LA32-NEXT:    ld.w $a1, $a1, 0
170; LA32-NEXT:    bitrev.w $a2, $a2
171; LA32-NEXT:    bitrev.w $a3, $a3
172; LA32-NEXT:    bitrev.w $a4, $a4
173; LA32-NEXT:    bitrev.w $a1, $a1
174; LA32-NEXT:    st.w $a1, $a0, 12
175; LA32-NEXT:    st.w $a4, $a0, 8
176; LA32-NEXT:    st.w $a3, $a0, 4
177; LA32-NEXT:    st.w $a2, $a0, 0
178; LA32-NEXT:    ret
179;
180; LA64-LABEL: test_bitreverse_i128:
181; LA64:       # %bb.0:
182; LA64-NEXT:    bitrev.d $a2, $a1
183; LA64-NEXT:    bitrev.d $a1, $a0
184; LA64-NEXT:    move $a0, $a2
185; LA64-NEXT:    ret
186  %tmp = call i128 @llvm.bitreverse.i128(i128 %a)
187  ret i128 %tmp
188}
189