int-const-06.ll revision 4c5e43da7792f75567b693105cc53e3f1992ad98 
1; Test moves of integers to 8-byte memory locations.
2;
3; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
4
5; Check moves of zero.
6define void @f1(i64 *%a) {
7; CHECK-LABEL: f1:
8; CHECK: mvghi 0(%r2), 0
9; CHECK: br %r14
10  store i64 0, i64 *%a
11  ret void
12}
13
14; Check the high end of the signed 16-bit range.
15define void @f2(i64 *%a) {
16; CHECK-LABEL: f2:
17; CHECK: mvghi 0(%r2), 32767
18; CHECK: br %r14
19  store i64 32767, i64 *%a
20  ret void
21}
22
23; Check the next value up, which can't use MVGHI.
24define void @f3(i64 *%a) {
25; CHECK-LABEL: f3:
26; CHECK-NOT: mvghi
27; CHECK: br %r14
28  store i64 32768, i64 *%a
29  ret void
30}
31
32; Check moves of -1.
33define void @f4(i64 *%a) {
34; CHECK-LABEL: f4:
35; CHECK: mvghi 0(%r2), -1
36; CHECK: br %r14
37  store i64 -1, i64 *%a
38  ret void
39}
40
41; Check the low end of the MVGHI range.
42define void @f5(i64 *%a) {
43; CHECK-LABEL: f5:
44; CHECK: mvghi 0(%r2), -32768
45; CHECK: br %r14
46  store i64 -32768, i64 *%a
47  ret void
48}
49
50; Check the next value down, which can't use MVGHI.
51define void @f6(i64 *%a) {
52; CHECK-LABEL: f6:
53; CHECK-NOT: mvghi
54; CHECK: br %r14
55  store i64 -32769, i64 *%a
56  ret void
57}
58
59; Check the high end of the MVGHI range.
60define void @f7(i64 *%a) {
61; CHECK-LABEL: f7:
62; CHECK: mvghi 4088(%r2), 42
63; CHECK: br %r14
64  %ptr = getelementptr i64, i64 *%a, i64 511
65  store i64 42, i64 *%ptr
66  ret void
67}
68
69; Check the next doubleword up, which is out of range.  We prefer STG
70; in that case.
71define void @f8(i64 *%a) {
72; CHECK-LABEL: f8:
73; CHECK: lghi [[TMP:%r[0-5]]], 42
74; CHECK: stg [[TMP]], 4096(%r2)
75; CHECK: br %r14
76  %ptr = getelementptr i64, i64 *%a, i64 512
77  store i64 42, i64 *%ptr
78  ret void
79}
80
81; Check negative displacements, for which we again prefer STG.
82define void @f9(i64 *%a) {
83; CHECK-LABEL: f9:
84; CHECK: lghi [[TMP:%r[0-5]]], 42
85; CHECK: stg [[TMP]], -8(%r2)
86; CHECK: br %r14
87  %ptr = getelementptr i64, i64 *%a, i64 -1
88  store i64 42, i64 *%ptr
89  ret void
90}
91
92; Check that MVGHI does not allow an index.
93define void @f10(i64 %src, i64 %index) {
94; CHECK-LABEL: f10:
95; CHECK: lghi [[TMP:%r[0-5]]], 42
96; CHECK: stg [[TMP]], 0({{%r2,%r3|%r3,%r2}})
97; CHECK: br %r14
98  %add = add i64 %src, %index
99  %ptr = inttoptr i64 %add to i64 *
100  store i64 42, i64 *%ptr
101  ret void
102}
103