1; Test 32-bit byteswaps from registers to memory.
2;
3; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
4
5declare i16 @llvm.bswap.i16(i16 %a)
6
7; Check STRVH with no displacement.
8define void @f1(i16 *%dst, i16 %a) {
9; CHECK-LABEL: f1:
10; CHECK: strvh %r3, 0(%r2)
11; CHECK: br %r14
12  %swapped = call i16 @llvm.bswap.i16(i16 %a)
13  store i16 %swapped, i16 *%dst
14  ret void
15}
16
17; Check the high end of the aligned STRVH range.
18define void @f2(i16 *%dst, i16 %a) {
19; CHECK-LABEL: f2:
20; CHECK: strvh %r3, 524286(%r2)
21; CHECK: br %r14
22  %ptr = getelementptr i16, i16 *%dst, i64 262143
23  %swapped = call i16 @llvm.bswap.i16(i16 %a)
24  store i16 %swapped, i16 *%ptr
25  ret void
26}
27
28; Check the next word up, which needs separate address logic.
29; Other sequences besides this one would be OK.
30define void @f3(i16 *%dst, i16 %a) {
31; CHECK-LABEL: f3:
32; CHECK: agfi %r2, 524288
33; CHECK: strvh %r3, 0(%r2)
34; CHECK: br %r14
35  %ptr = getelementptr i16, i16 *%dst, i64 262144
36  %swapped = call i16 @llvm.bswap.i16(i16 %a)
37  store i16 %swapped, i16 *%ptr
38  ret void
39}
40
41; Check the high end of the negative aligned STRVH range.
42define void @f4(i16 *%dst, i16 %a) {
43; CHECK-LABEL: f4:
44; CHECK: strvh %r3, -2(%r2)
45; CHECK: br %r14
46  %ptr = getelementptr i16, i16 *%dst, i64 -1
47  %swapped = call i16 @llvm.bswap.i16(i16 %a)
48  store i16 %swapped, i16 *%ptr
49  ret void
50}
51
52; Check the low end of the STRVH range.
53define void @f5(i16 *%dst, i16 %a) {
54; CHECK-LABEL: f5:
55; CHECK: strvh %r3, -524288(%r2)
56; CHECK: br %r14
57  %ptr = getelementptr i16, i16 *%dst, i64 -262144
58  %swapped = call i16 @llvm.bswap.i16(i16 %a)
59  store i16 %swapped, i16 *%ptr
60  ret void
61}
62
63; Check the next word down, which needs separate address logic.
64; Other sequences besides this one would be OK.
65define void @f6(i16 *%dst, i16 %a) {
66; CHECK-LABEL: f6:
67; CHECK: agfi %r2, -524290
68; CHECK: strvh %r3, 0(%r2)
69; CHECK: br %r14
70  %ptr = getelementptr i16, i16 *%dst, i64 -262145
71  %swapped = call i16 @llvm.bswap.i16(i16 %a)
72  store i16 %swapped, i16 *%ptr
73  ret void
74}
75
76; Check that STRVH allows an index.
77define void @f7(i64 %src, i64 %index, i16 %a) {
78; CHECK-LABEL: f7:
79; CHECK: strvh %r4, 524287({{%r3,%r2|%r2,%r3}})
80; CHECK: br %r14
81  %add1 = add i64 %src, %index
82  %add2 = add i64 %add1, 524287
83  %ptr = inttoptr i64 %add2 to i16 *
84  %swapped = call i16 @llvm.bswap.i16(i16 %a)
85  store i16 %swapped, i16 *%ptr
86  ret void
87}
88
89