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1; Test memset in cases where the set value is variable.
2;
3; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
4
5declare void @llvm.memset.p0i8.i32(i8 *nocapture, i8, i32, i32, i1) nounwind
6declare void @llvm.memset.p0i8.i64(i8 *nocapture, i8, i64, i32, i1) nounwind
7
8; No bytes, i32 version.
9define void @f1(i8 *%dest, i8 %val) {
10; CHECK-LABEL: f1:
11; CHECK-NOT: %r2
12; CHECK-NOT: %r3
13; CHECK: br %r14
14  call void @llvm.memset.p0i8.i32(i8 *%dest, i8 %val, i32 0, i32 1, i1 false)
15  ret void
16}
17
18; No bytes, i64 version.
19define void @f2(i8 *%dest, i8 %val) {
20; CHECK-LABEL: f2:
21; CHECK-NOT: %r2
22; CHECK-NOT: %r3
23; CHECK: br %r14
24  call void @llvm.memset.p0i8.i64(i8 *%dest, i8 %val, i64 0, i32 1, i1 false)
25  ret void
26}
27
28; 1 byte, i32 version.
29define void @f3(i8 *%dest, i8 %val) {
30; CHECK-LABEL: f3:
31; CHECK: stc %r3, 0(%r2)
32; CHECK: br %r14
33  call void @llvm.memset.p0i8.i32(i8 *%dest, i8 %val, i32 1, i32 1, i1 false)
34  ret void
35}
36
37; 1 byte, i64 version.
38define void @f4(i8 *%dest, i8 %val) {
39; CHECK-LABEL: f4:
40; CHECK: stc %r3, 0(%r2)
41; CHECK: br %r14
42  call void @llvm.memset.p0i8.i64(i8 *%dest, i8 %val, i64 1, i32 1, i1 false)
43  ret void
44}
45
46; 2 bytes, i32 version.
47define void @f5(i8 *%dest, i8 %val) {
48; CHECK-LABEL: f5:
49; CHECK-DAG: stc %r3, 0(%r2)
50; CHECK-DAG: stc %r3, 1(%r2)
51; CHECK: br %r14
52  call void @llvm.memset.p0i8.i32(i8 *%dest, i8 %val, i32 2, i32 1, i1 false)
53  ret void
54}
55
56; 2 bytes, i64 version.
57define void @f6(i8 *%dest, i8 %val) {
58; CHECK-LABEL: f6:
59; CHECK-DAG: stc %r3, 0(%r2)
60; CHECK-DAG: stc %r3, 1(%r2)
61; CHECK: br %r14
62  call void @llvm.memset.p0i8.i64(i8 *%dest, i8 %val, i64 2, i32 1, i1 false)
63  ret void
64}
65
66; 3 bytes, i32 version.
67define void @f7(i8 *%dest, i8 %val) {
68; CHECK-LABEL: f7:
69; CHECK: stc %r3, 0(%r2)
70; CHECK: mvc 1(2,%r2), 0(%r2)
71; CHECK: br %r14
72  call void @llvm.memset.p0i8.i32(i8 *%dest, i8 %val, i32 3, i32 1, i1 false)
73  ret void
74}
75
76; 3 bytes, i64 version.
77define void @f8(i8 *%dest, i8 %val) {
78; CHECK-LABEL: f8:
79; CHECK: stc %r3, 0(%r2)
80; CHECK: mvc 1(2,%r2), 0(%r2)
81; CHECK: br %r14
82  call void @llvm.memset.p0i8.i64(i8 *%dest, i8 %val, i64 3, i32 1, i1 false)
83  ret void
84}
85
86; 257 bytes, i32 version.
87define void @f9(i8 *%dest, i8 %val) {
88; CHECK-LABEL: f9:
89; CHECK: stc %r3, 0(%r2)
90; CHECK: mvc 1(256,%r2), 0(%r2)
91; CHECK: br %r14
92  call void @llvm.memset.p0i8.i32(i8 *%dest, i8 %val, i32 257, i32 1, i1 false)
93  ret void
94}
95
96; 257 bytes, i64 version.
97define void @f10(i8 *%dest, i8 %val) {
98; CHECK-LABEL: f10:
99; CHECK: stc %r3, 0(%r2)
100; CHECK: mvc 1(256,%r2), 0(%r2)
101; CHECK: br %r14
102  call void @llvm.memset.p0i8.i64(i8 *%dest, i8 %val, i64 257, i32 1, i1 false)
103  ret void
104}
105
106; 258 bytes, i32 version.  258 bytes is too big for a single MVC.
107; For now expect none, so that the test fails and gets updated when
108; large copies are implemented.
109define void @f11(i8 *%dest, i8 %val) {
110; CHECK-LABEL: f11:
111; CHECK-NOT: mvc
112; CHECK: br %r14
113  call void @llvm.memset.p0i8.i32(i8 *%dest, i8 %val, i32 258, i32 1, i1 false)
114  ret void
115}
116
117; 258 bytes, i64 version, with the same comments as above.
118define void @f12(i8 *%dest, i8 %val) {
119; CHECK-LABEL: f12:
120; CHECK-NOT: mvc
121; CHECK: br %r14
122  call void @llvm.memset.p0i8.i64(i8 *%dest, i8 %val, i64 258, i32 1, i1 false)
123  ret void
124}
125