1; Test 64-bit atomic XORs.
2;
3; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s
4
5; Check XORs of a variable.
6define i64 @f1(i64 %dummy, i64 *%src, i64 %b) {
7; CHECK-LABEL: f1:
8; CHECK: lg %r2, 0(%r3)
9; CHECK: [[LABEL:\.[^ ]*]]:
10; CHECK: lgr %r0, %r2
11; CHECK: xgr %r0, %r4
12; CHECK: csg %r2, %r0, 0(%r3)
13; CHECK: jl [[LABEL]]
14; CHECK: br %r14
15  %res = atomicrmw xor i64 *%src, i64 %b seq_cst
16  ret i64 %res
17}
18
19; Check the lowest useful XILF value.
20define i64 @f2(i64 %dummy, i64 *%src) {
21; CHECK-LABEL: f2:
22; CHECK: lg %r2, 0(%r3)
23; CHECK: [[LABEL:\.[^ ]*]]:
24; CHECK: lgr %r0, %r2
25; CHECK: xilf %r0, 1
26; CHECK: csg %r2, %r0, 0(%r3)
27; CHECK: jl [[LABEL]]
28; CHECK: br %r14
29  %res = atomicrmw xor i64 *%src, i64 1 seq_cst
30  ret i64 %res
31}
32
33; Check the high end of the XILF range.
34define i64 @f3(i64 %dummy, i64 *%src) {
35; CHECK-LABEL: f3:
36; CHECK: xilf %r0, 4294967295
37; CHECK: br %r14
38  %res = atomicrmw xor i64 *%src, i64 4294967295 seq_cst
39  ret i64 %res
40}
41
42; Check the lowest useful XIHF value, which is one greater than above.
43define i64 @f4(i64 %dummy, i64 *%src) {
44; CHECK-LABEL: f4:
45; CHECK: xihf %r0, 1
46; CHECK: br %r14
47  %res = atomicrmw xor i64 *%src, i64 4294967296 seq_cst
48  ret i64 %res
49}
50
51; Check the next value up, which must use a register.  (We could use
52; combinations of XIH* and XIL* instead, but that isn't implemented.)
53define i64 @f5(i64 %dummy, i64 *%src) {
54; CHECK-LABEL: f5:
55; CHECK: xgr
56; CHECK: br %r14
57  %res = atomicrmw xor i64 *%src, i64 4294967297 seq_cst
58  ret i64 %res
59}
60
61; Check the high end of the XIHF range.
62define i64 @f6(i64 %dummy, i64 *%src) {
63; CHECK-LABEL: f6:
64; CHECK: xihf %r0, 4294967295
65; CHECK: br %r14
66  %res = atomicrmw xor i64 *%src, i64 -4294967296 seq_cst
67  ret i64 %res
68}
69
70; Check the next value up, which must use a register.
71define i64 @f7(i64 %dummy, i64 *%src) {
72; CHECK-LABEL: f7:
73; CHECK: xgr
74; CHECK: br %r14
75  %res = atomicrmw xor i64 *%src, i64 -4294967295 seq_cst
76  ret i64 %res
77}
78