1 ; Test memset in cases where the set value is variable.
3 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
5 declare void @llvm.memset.p0i8.i32(i8 *nocapture, i8, i32, i32, i1) nounwind
6 declare void @llvm.memset.p0i8.i64(i8 *nocapture, i8, i64, i32, i1) nounwind
8 ; No bytes, i32 version.
9 define void @f1(i8 *%dest, i8 %val) {
14 call void @llvm.memset.p0i8.i32(i8 *%dest, i8 %val, i32 0, i32 1, i1 false)
18 ; No bytes, i64 version.
19 define void @f2(i8 *%dest, i8 %val) {
24 call void @llvm.memset.p0i8.i64(i8 *%dest, i8 %val, i64 0, i32 1, i1 false)
28 ; 1 byte, i32 version.
29 define void @f3(i8 *%dest, i8 %val) {
31 ; CHECK: stc %r3, 0(%r2)
33 call void @llvm.memset.p0i8.i32(i8 *%dest, i8 %val, i32 1, i32 1, i1 false)
37 ; 1 byte, i64 version.
38 define void @f4(i8 *%dest, i8 %val) {
40 ; CHECK: stc %r3, 0(%r2)
42 call void @llvm.memset.p0i8.i64(i8 *%dest, i8 %val, i64 1, i32 1, i1 false)
46 ; 2 bytes, i32 version.
47 define void @f5(i8 *%dest, i8 %val) {
49 ; CHECK-DAG: stc %r3, 0(%r2)
50 ; CHECK-DAG: stc %r3, 1(%r2)
52 call void @llvm.memset.p0i8.i32(i8 *%dest, i8 %val, i32 2, i32 1, i1 false)
56 ; 2 bytes, i64 version.
57 define void @f6(i8 *%dest, i8 %val) {
59 ; CHECK-DAG: stc %r3, 0(%r2)
60 ; CHECK-DAG: stc %r3, 1(%r2)
62 call void @llvm.memset.p0i8.i64(i8 *%dest, i8 %val, i64 2, i32 1, i1 false)
66 ; 3 bytes, i32 version.
67 define void @f7(i8 *%dest, i8 %val) {
69 ; CHECK: stc %r3, 0(%r2)
70 ; CHECK: mvc 1(2,%r2), 0(%r2)
72 call void @llvm.memset.p0i8.i32(i8 *%dest, i8 %val, i32 3, i32 1, i1 false)
76 ; 3 bytes, i64 version.
77 define void @f8(i8 *%dest, i8 %val) {
79 ; CHECK: stc %r3, 0(%r2)
80 ; CHECK: mvc 1(2,%r2), 0(%r2)
82 call void @llvm.memset.p0i8.i64(i8 *%dest, i8 %val, i64 3, i32 1, i1 false)
86 ; 257 bytes, i32 version.
87 define void @f9(i8 *%dest, i8 %val) {
89 ; CHECK: stc %r3, 0(%r2)
90 ; CHECK: mvc 1(256,%r2), 0(%r2)
92 call void @llvm.memset.p0i8.i32(i8 *%dest, i8 %val, i32 257, i32 1, i1 false)
96 ; 257 bytes, i64 version.
97 define void @f10(i8 *%dest, i8 %val) {
99 ; CHECK: stc %r3, 0(%r2)
100 ; CHECK: mvc 1(256,%r2), 0(%r2)
102 call void @llvm.memset.p0i8.i64(i8 *%dest, i8 %val, i64 257, i32 1, i1 false)
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.
109 define void @f11(i8 *%dest, i8 %val) {
113 call void @llvm.memset.p0i8.i32(i8 *%dest, i8 %val, i32 258, i32 1, i1 false)
117 ; 258 bytes, i64 version, with the same comments as above.
118 define void @f12(i8 *%dest, i8 %val) {
122 call void @llvm.memset.p0i8.i64(i8 *%dest, i8 %val, i64 258, i32 1, i1 false)