1; Check that unaligned accesses are allowed in general.  We check the
2; few exceptions (like CRL) in their respective test files.
3;
4; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
5
6; Check that these four byte stores become a single word store.
7define void @f1(i8 *%ptr) {
8; CHECK: f1
9; CHECK: iilf [[REG:%r[0-5]]], 66051
10; CHECK: st [[REG]], 0(%r2)
11; CHECK: br %r14
12  %off1 = getelementptr i8, i8 *%ptr, i64 1
13  %off2 = getelementptr i8, i8 *%ptr, i64 2
14  %off3 = getelementptr i8, i8 *%ptr, i64 3
15  store i8 0, i8 *%ptr
16  store i8 1, i8 *%off1
17  store i8 2, i8 *%off2
18  store i8 3, i8 *%off3
19  ret void
20}
21
22; Check that unaligned 2-byte accesses are allowed.
23define i16 @f2(i16 *%src, i16 *%dst) {
24; CHECK-LABEL: f2:
25; CHECK: lh %r2, 0(%r2)
26; CHECK: sth %r2, 0(%r3)
27; CHECK: br %r14
28  %val = load i16, i16 *%src, align 1
29  store i16 %val, i16 *%dst, align 1
30  ret i16 %val
31}
32
33; Check that unaligned 4-byte accesses are allowed.
34define i32 @f3(i32 *%src1, i32 *%src2, i32 *%dst) {
35; CHECK-LABEL: f3:
36; CHECK: l %r2, 0(%r2)
37; CHECK: s %r2, 0(%r3)
38; CHECK: st %r2, 0(%r4)
39; CHECK: br %r14
40  %val1 = load i32, i32 *%src1, align 1
41  %val2 = load i32, i32 *%src2, align 2
42  %sub = sub i32 %val1, %val2
43  store i32 %sub, i32 *%dst, align 1
44  ret i32 %sub
45}
46
47; Check that unaligned 8-byte accesses are allowed.
48define i64 @f4(i64 *%src1, i64 *%src2, i64 *%dst) {
49; CHECK-LABEL: f4:
50; CHECK: lg %r2, 0(%r2)
51; CHECK: sg %r2, 0(%r3)
52; CHECK: stg %r2, 0(%r4)
53; CHECK: br %r14
54  %val1 = load i64, i64 *%src1, align 1
55  %val2 = load i64, i64 *%src2, align 2
56  %sub = sub i64 %val1, %val2
57  store i64 %sub, i64 *%dst, align 4
58  ret i64 %sub
59}
60