1 ; Test 64-bit compare and swap.
3 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
5 ; Check CSG without a displacement.
6 define i64 @f1(i64 %cmp, i64 %swap, i64 *%src) {
8 ; CHECK: csg %r2, %r3, 0(%r4)
10 %val = cmpxchg i64 *%src, i64 %cmp, i64 %swap seq_cst
14 ; Check the high end of the aligned CSG range.
15 define i64 @f2(i64 %cmp, i64 %swap, i64 *%src) {
17 ; CHECK: csg %r2, %r3, 524280(%r4)
19 %ptr = getelementptr i64 *%src, i64 65535
20 %val = cmpxchg i64 *%ptr, i64 %cmp, i64 %swap seq_cst
24 ; Check the next doubleword up, which needs separate address logic.
25 ; Other sequences besides this one would be OK.
26 define i64 @f3(i64 %cmp, i64 %swap, i64 *%src) {
28 ; CHECK: agfi %r4, 524288
29 ; CHECK: csg %r2, %r3, 0(%r4)
31 %ptr = getelementptr i64 *%src, i64 65536
32 %val = cmpxchg i64 *%ptr, i64 %cmp, i64 %swap seq_cst
36 ; Check the high end of the negative aligned CSG range.
37 define i64 @f4(i64 %cmp, i64 %swap, i64 *%src) {
39 ; CHECK: csg %r2, %r3, -8(%r4)
41 %ptr = getelementptr i64 *%src, i64 -1
42 %val = cmpxchg i64 *%ptr, i64 %cmp, i64 %swap seq_cst
46 ; Check the low end of the CSG range.
47 define i64 @f5(i64 %cmp, i64 %swap, i64 *%src) {
49 ; CHECK: csg %r2, %r3, -524288(%r4)
51 %ptr = getelementptr i64 *%src, i64 -65536
52 %val = cmpxchg i64 *%ptr, i64 %cmp, i64 %swap seq_cst
56 ; Check the next doubleword down, which needs separate address logic.
57 ; Other sequences besides this one would be OK.
58 define i64 @f6(i64 %cmp, i64 %swap, i64 *%src) {
60 ; CHECK: agfi %r4, -524296
61 ; CHECK: csg %r2, %r3, 0(%r4)
63 %ptr = getelementptr i64 *%src, i64 -65537
64 %val = cmpxchg i64 *%ptr, i64 %cmp, i64 %swap seq_cst
68 ; Check that CSG does not allow an index.
69 define i64 @f7(i64 %cmp, i64 %swap, i64 %src, i64 %index) {
72 ; CHECK: csg %r2, %r3, 0(%r4)
74 %add1 = add i64 %src, %index
75 %ptr = inttoptr i64 %add1 to i64 *
76 %val = cmpxchg i64 *%ptr, i64 %cmp, i64 %swap seq_cst
80 ; Check that a constant %cmp value is loaded into a register first.
81 define i64 @f8(i64 %dummy, i64 %swap, i64 *%ptr) {
83 ; CHECK: lghi %r2, 1001
84 ; CHECK: csg %r2, %r3, 0(%r4)
86 %val = cmpxchg i64 *%ptr, i64 1001, i64 %swap seq_cst
90 ; Check that a constant %swap value is loaded into a register first.
91 define i64 @f9(i64 %cmp, i64 *%ptr) {
93 ; CHECK: lghi [[SWAP:%r[0-9]+]], 1002
94 ; CHECK: csg %r2, [[SWAP]], 0(%r3)
96 %val = cmpxchg i64 *%ptr, i64 %cmp, i64 1002 seq_cst