1; Test moves of integers to 2-byte memory locations.
2;
3; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
4
5; Check the low end of the unsigned range.
6define void @f1(i16 *%ptr) {
7; CHECK-LABEL: f1:
8; CHECK: mvhhi 0(%r2), 0
9; CHECK: br %r14
10  store i16 0, i16 *%ptr
11  ret void
12}
13
14; Check the high end of the signed range.
15define void @f2(i16 *%ptr) {
16; CHECK-LABEL: f2:
17; CHECK: mvhhi 0(%r2), 32767
18; CHECK: br %r14
19  store i16 32767, i16 *%ptr
20  ret void
21}
22
23; Check the next value up.
24define void @f3(i16 *%ptr) {
25; CHECK-LABEL: f3:
26; CHECK: mvhhi 0(%r2), -32768
27; CHECK: br %r14
28  store i16 -32768, i16 *%ptr
29  ret void
30}
31
32; Check the high end of the unsigned range.
33define void @f4(i16 *%ptr) {
34; CHECK-LABEL: f4:
35; CHECK: mvhhi 0(%r2), -1
36; CHECK: br %r14
37  store i16 65535, i16 *%ptr
38  ret void
39}
40
41; Check -1.
42define void @f5(i16 *%ptr) {
43; CHECK-LABEL: f5:
44; CHECK: mvhhi 0(%r2), -1
45; CHECK: br %r14
46  store i16 -1, i16 *%ptr
47  ret void
48}
49
50; Check the low end of the signed range.
51define void @f6(i16 *%ptr) {
52; CHECK-LABEL: f6:
53; CHECK: mvhhi 0(%r2), -32768
54; CHECK: br %r14
55  store i16 -32768, i16 *%ptr
56  ret void
57}
58
59; Check the next value down.
60define void @f7(i16 *%ptr) {
61; CHECK-LABEL: f7:
62; CHECK: mvhhi 0(%r2), 32767
63; CHECK: br %r14
64  store i16 -32769, i16 *%ptr
65  ret void
66}
67
68; Check the high end of the MVHHI range.
69define void @f8(i16 *%a) {
70; CHECK-LABEL: f8:
71; CHECK: mvhhi 4094(%r2), 42
72; CHECK: br %r14
73  %ptr = getelementptr i16, i16 *%a, i64 2047
74  store i16 42, i16 *%ptr
75  ret void
76}
77
78; Check the next halfword up, which is out of range.  We prefer STHY
79; in that case.
80define void @f9(i16 *%a) {
81; CHECK-LABEL: f9:
82; CHECK: lhi [[TMP:%r[0-5]]], 42
83; CHECK: sthy [[TMP]], 4096(%r2)
84; CHECK: br %r14
85  %ptr = getelementptr i16, i16 *%a, i64 2048
86  store i16 42, i16 *%ptr
87  ret void
88}
89
90; Check negative displacements, for which we again prefer STHY.
91define void @f10(i16 *%a) {
92; CHECK-LABEL: f10:
93; CHECK: lhi [[TMP:%r[0-5]]], 42
94; CHECK: sthy [[TMP]], -2(%r2)
95; CHECK: br %r14
96  %ptr = getelementptr i16, i16 *%a, i64 -1
97  store i16 42, i16 *%ptr
98  ret void
99}
100
101; Check that MVHHI does not allow an index.
102define void @f11(i64 %src, i64 %index) {
103; CHECK-LABEL: f11:
104; CHECK: lhi [[TMP:%r[0-5]]], 42
105; CHECK: sth [[TMP]], 0({{%r2,%r3|%r3,%r2}})
106; CHECK: br %r14
107  %add = add i64 %src, %index
108  %ptr = inttoptr i64 %add to i16 *
109  store i16 42, i16 *%ptr
110  ret void
111}
112