1 ; Test 64-bit atomic subtractions, z196 version.
3 ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s
5 ; Check addition of a variable.
6 define i64 @f1(i64 %dummy, i64 *%src, i64 %b) {
8 ; CHECK: lcgr [[NEG:%r[0-5]]], %r4
9 ; CHECK: laag %r2, [[NEG]], 0(%r3)
11 %res = atomicrmw sub i64 *%src, i64 %b seq_cst
15 ; Check addition of 1, which needs a temporary.
16 define i64 @f2(i64 %dummy, i64 *%src) {
18 ; CHECK: lghi [[TMP:%r[0-5]]], -1
19 ; CHECK: laag %r2, [[TMP]], 0(%r3)
21 %res = atomicrmw sub i64 *%src, i64 1 seq_cst
25 ; Check the high end of the LAAG range.
26 define i64 @f3(i64 %dummy, i64 *%src, i64 %b) {
28 ; CHECK: lcgr [[NEG:%r[0-5]]], %r4
29 ; CHECK: laag %r2, [[NEG]], 524280(%r3)
31 %ptr = getelementptr i64 *%src, i64 65535
32 %res = atomicrmw sub i64 *%ptr, i64 %b seq_cst
36 ; Check the next doubleword up, which needs separate address logic.
37 define i64 @f4(i64 %dummy, i64 *%src, i64 %b) {
39 ; CHECK-DAG: lcgr [[NEG:%r[0-5]]], %r4
40 ; CHECK-DAG: agfi %r3, 524288
41 ; CHECK: laag %r2, [[NEG]], 0(%r3)
43 %ptr = getelementptr i64 *%src, i64 65536
44 %res = atomicrmw sub i64 *%ptr, i64 %b seq_cst
48 ; Check the low end of the LAAG range.
49 define i64 @f5(i64 %dummy, i64 *%src, i64 %b) {
51 ; CHECK: lcgr [[NEG:%r[0-5]]], %r4
52 ; CHECK: laag %r2, [[NEG]], -524288(%r3)
54 %ptr = getelementptr i64 *%src, i64 -65536
55 %res = atomicrmw sub i64 *%ptr, i64 %b seq_cst
59 ; Check the next doubleword down, which needs separate address logic.
60 define i64 @f6(i64 %dummy, i64 *%src, i64 %b) {
62 ; CHECK-DAG: lcgr [[NEG:%r[0-5]]], %r4
63 ; CHECK-DAG: agfi %r3, -524296
64 ; CHECK: laag %r2, [[NEG]], 0(%r3)
66 %ptr = getelementptr i64 *%src, i64 -65537
67 %res = atomicrmw sub i64 *%ptr, i64 %b seq_cst