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1; Test 32-bit atomic subtractions, z196 version.
2;
3; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s
4
5; Check addition of a variable.
6define i32 @f1(i32 %dummy, i32 *%src, i32 %b) {
7; CHECK-LABEL: f1:
8; CHECK: lcr [[NEG:%r[0-5]]], %r4
9; CHECK: laa %r2, [[NEG]], 0(%r3)
10; CHECK: br %r14
11  %res = atomicrmw sub i32 *%src, i32 %b seq_cst
12  ret i32 %res
13}
14
15; Check addition of 1, which needs a temporary.
16define i32 @f2(i32 %dummy, i32 *%src) {
17; CHECK-LABEL: f2:
18; CHECK: lhi [[TMP:%r[0-5]]], -1
19; CHECK: laa %r2, [[TMP]], 0(%r3)
20; CHECK: br %r14
21  %res = atomicrmw sub i32 *%src, i32 1 seq_cst
22  ret i32 %res
23}
24
25; Check the high end of the LAA range.
26define i32 @f3(i32 %dummy, i32 *%src, i32 %b) {
27; CHECK-LABEL: f3:
28; CHECK: lcr [[NEG:%r[0-5]]], %r4
29; CHECK: laa %r2, [[NEG]], 524284(%r3)
30; CHECK: br %r14
31  %ptr = getelementptr i32, i32 *%src, i32 131071
32  %res = atomicrmw sub i32 *%ptr, i32 %b seq_cst
33  ret i32 %res
34}
35
36; Check the next word up, which needs separate address logic.
37define i32 @f4(i32 %dummy, i32 *%src, i32 %b) {
38; CHECK-LABEL: f4:
39; CHECK-DAG: lcr [[NEG:%r[0-5]]], %r4
40; CHECK-DAG: agfi %r3, 524288
41; CHECK: laa %r2, [[NEG]], 0(%r3)
42; CHECK: br %r14
43  %ptr = getelementptr i32, i32 *%src, i32 131072
44  %res = atomicrmw sub i32 *%ptr, i32 %b seq_cst
45  ret i32 %res
46}
47
48; Check the low end of the LAA range.
49define i32 @f5(i32 %dummy, i32 *%src, i32 %b) {
50; CHECK-LABEL: f5:
51; CHECK: lcr [[NEG:%r[0-5]]], %r4
52; CHECK: laa %r2, [[NEG]], -524288(%r3)
53; CHECK: br %r14
54  %ptr = getelementptr i32, i32 *%src, i32 -131072
55  %res = atomicrmw sub i32 *%ptr, i32 %b seq_cst
56  ret i32 %res
57}
58
59; Check the next word down, which needs separate address logic.
60define i32 @f6(i32 %dummy, i32 *%src, i32 %b) {
61; CHECK-LABEL: f6:
62; CHECK-DAG: lcr [[NEG:%r[0-5]]], %r4
63; CHECK-DAG: agfi %r3, -524292
64; CHECK: laa %r2, [[NEG]], 0(%r3)
65; CHECK: br %r14
66  %ptr = getelementptr i32, i32 *%src, i32 -131073
67  %res = atomicrmw sub i32 *%ptr, i32 %b seq_cst
68  ret i32 %res
69}
70