1 ; Test 64-bit atomic subtractions.
3 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
5 ; Check subtraction of a variable.
6 define i64 @f1(i64 %dummy, i64 *%src, i64 %b) {
8 ; CHECK: lg %r2, 0(%r3)
9 ; CHECK: [[LABEL:\.[^:]*]]:
12 ; CHECK: csg %r2, %r0, 0(%r3)
13 ; CHECK: jlh [[LABEL]]
15 %res = atomicrmw sub i64 *%src, i64 %b seq_cst
19 ; Check subtraction of 1, which can use AGHI.
20 define i64 @f2(i64 %dummy, i64 *%src) {
22 ; CHECK: lg %r2, 0(%r3)
23 ; CHECK: [[LABEL:\.[^:]*]]:
26 ; CHECK: csg %r2, %r0, 0(%r3)
27 ; CHECK: jlh [[LABEL]]
29 %res = atomicrmw sub i64 *%src, i64 1 seq_cst
33 ; Check the low end of the AGHI range.
34 define i64 @f3(i64 %dummy, i64 *%src) {
36 ; CHECK: aghi %r0, -32768
38 %res = atomicrmw sub i64 *%src, i64 32768 seq_cst
42 ; Check the next value up, which must use AGFI.
43 define i64 @f4(i64 %dummy, i64 *%src) {
45 ; CHECK: agfi %r0, -32769
47 %res = atomicrmw sub i64 *%src, i64 32769 seq_cst
51 ; Check the low end of the AGFI range.
52 define i64 @f5(i64 %dummy, i64 *%src) {
54 ; CHECK: agfi %r0, -2147483648
56 %res = atomicrmw sub i64 *%src, i64 2147483648 seq_cst
60 ; Check the next value up, which must use a register operation.
61 define i64 @f6(i64 %dummy, i64 *%src) {
65 %res = atomicrmw sub i64 *%src, i64 2147483649 seq_cst
69 ; Check subtraction of -1, which can use AGHI.
70 define i64 @f7(i64 %dummy, i64 *%src) {
74 %res = atomicrmw sub i64 *%src, i64 -1 seq_cst
78 ; Check the high end of the AGHI range.
79 define i64 @f8(i64 %dummy, i64 *%src) {
81 ; CHECK: aghi %r0, 32767
83 %res = atomicrmw sub i64 *%src, i64 -32767 seq_cst
87 ; Check the next value down, which must use AGFI instead.
88 define i64 @f9(i64 %dummy, i64 *%src) {
90 ; CHECK: agfi %r0, 32768
92 %res = atomicrmw sub i64 *%src, i64 -32768 seq_cst
96 ; Check the high end of the AGFI range.
97 define i64 @f10(i64 %dummy, i64 *%src) {
99 ; CHECK: agfi %r0, 2147483647
101 %res = atomicrmw sub i64 *%src, i64 -2147483647 seq_cst
105 ; Check the next value down, which must use a register operation.
106 define i64 @f11(i64 %dummy, i64 *%src) {
110 %res = atomicrmw sub i64 *%src, i64 -2147483648 seq_cst