1 ; Test 32-bit atomic minimum and maximum.
3 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
6 define i32 @f1(i32 %dummy, i32 *%src, i32 %b) {
9 ; CHECK: [[LOOP:\.[^:]*]]:
10 ; CHECK: lr [[NEW:%r[0-9]+]], %r2
11 ; CHECK: crjle %r2, %r4, [[KEEP:\..*]]
12 ; CHECK: lr [[NEW]], %r4
13 ; CHECK: cs %r2, [[NEW]], 0(%r3)
16 %res = atomicrmw min i32 *%src, i32 %b seq_cst
20 ; Check signed maximum.
21 define i32 @f2(i32 %dummy, i32 *%src, i32 %b) {
23 ; CHECK: l %r2, 0(%r3)
24 ; CHECK: [[LOOP:\.[^:]*]]:
25 ; CHECK: lr [[NEW:%r[0-9]+]], %r2
26 ; CHECK: crjhe %r2, %r4, [[KEEP:\..*]]
27 ; CHECK: lr [[NEW]], %r4
28 ; CHECK: cs %r2, [[NEW]], 0(%r3)
31 %res = atomicrmw max i32 *%src, i32 %b seq_cst
35 ; Check unsigned minimum.
36 define i32 @f3(i32 %dummy, i32 *%src, i32 %b) {
38 ; CHECK: l %r2, 0(%r3)
39 ; CHECK: [[LOOP:\.[^:]*]]:
40 ; CHECK: lr [[NEW:%r[0-9]+]], %r2
41 ; CHECK: clrjle %r2, %r4, [[KEEP:\..*]]
42 ; CHECK: lr [[NEW]], %r4
43 ; CHECK: cs %r2, [[NEW]], 0(%r3)
46 %res = atomicrmw umin i32 *%src, i32 %b seq_cst
50 ; Check unsigned maximum.
51 define i32 @f4(i32 %dummy, i32 *%src, i32 %b) {
53 ; CHECK: l %r2, 0(%r3)
54 ; CHECK: [[LOOP:\.[^:]*]]:
55 ; CHECK: lr [[NEW:%r[0-9]+]], %r2
56 ; CHECK: clrjhe %r2, %r4, [[KEEP:\..*]]
57 ; CHECK: lr [[NEW]], %r4
58 ; CHECK: cs %r2, [[NEW]], 0(%r3)
61 %res = atomicrmw umax i32 *%src, i32 %b seq_cst
65 ; Check the high end of the aligned CS range.
66 define i32 @f5(i32 %dummy, i32 *%src, i32 %b) {
68 ; CHECK: l %r2, 4092(%r3)
69 ; CHECK: cs %r2, {{%r[0-9]+}}, 4092(%r3)
71 %ptr = getelementptr i32 *%src, i64 1023
72 %res = atomicrmw min i32 *%ptr, i32 %b seq_cst
76 ; Check the next word up, which requires CSY.
77 define i32 @f6(i32 %dummy, i32 *%src, i32 %b) {
79 ; CHECK: ly %r2, 4096(%r3)
80 ; CHECK: csy %r2, {{%r[0-9]+}}, 4096(%r3)
82 %ptr = getelementptr i32 *%src, i64 1024
83 %res = atomicrmw min i32 *%ptr, i32 %b seq_cst
87 ; Check the high end of the aligned CSY range.
88 define i32 @f7(i32 %dummy, i32 *%src, i32 %b) {
90 ; CHECK: ly %r2, 524284(%r3)
91 ; CHECK: csy %r2, {{%r[0-9]+}}, 524284(%r3)
93 %ptr = getelementptr i32 *%src, i64 131071
94 %res = atomicrmw min i32 *%ptr, i32 %b seq_cst
98 ; Check the next word up, which needs separate address logic.
99 define i32 @f8(i32 %dummy, i32 *%src, i32 %b) {
101 ; CHECK: agfi %r3, 524288
102 ; CHECK: l %r2, 0(%r3)
103 ; CHECK: cs %r2, {{%r[0-9]+}}, 0(%r3)
105 %ptr = getelementptr i32 *%src, i64 131072
106 %res = atomicrmw min i32 *%ptr, i32 %b seq_cst
110 ; Check the high end of the negative aligned CSY range.
111 define i32 @f9(i32 %dummy, i32 *%src, i32 %b) {
113 ; CHECK: ly %r2, -4(%r3)
114 ; CHECK: csy %r2, {{%r[0-9]+}}, -4(%r3)
116 %ptr = getelementptr i32 *%src, i64 -1
117 %res = atomicrmw min i32 *%ptr, i32 %b seq_cst
121 ; Check the low end of the CSY range.
122 define i32 @f10(i32 %dummy, i32 *%src, i32 %b) {
124 ; CHECK: ly %r2, -524288(%r3)
125 ; CHECK: csy %r2, {{%r[0-9]+}}, -524288(%r3)
127 %ptr = getelementptr i32 *%src, i64 -131072
128 %res = atomicrmw min i32 *%ptr, i32 %b seq_cst
132 ; Check the next word down, which needs separate address logic.
133 define i32 @f11(i32 %dummy, i32 *%src, i32 %b) {
135 ; CHECK: agfi %r3, -524292
136 ; CHECK: l %r2, 0(%r3)
137 ; CHECK: cs %r2, {{%r[0-9]+}}, 0(%r3)
139 %ptr = getelementptr i32 *%src, i64 -131073
140 %res = atomicrmw min i32 *%ptr, i32 %b seq_cst
144 ; Check that indexed addresses are not allowed.
145 define i32 @f12(i32 %dummy, i64 %base, i64 %index, i32 %b) {
147 ; CHECK: agr %r3, %r4
148 ; CHECK: l %r2, 0(%r3)
149 ; CHECK: cs %r2, {{%r[0-9]+}}, 0(%r3)
151 %add = add i64 %base, %index
152 %ptr = inttoptr i64 %add to i32 *
153 %res = atomicrmw min i32 *%ptr, i32 %b seq_cst
157 ; Check that constants are handled.
158 define i32 @f13(i32 %dummy, i32 *%ptr) {
160 ; CHECK: lhi [[LIMIT:%r[0-9]+]], 42
161 ; CHECK: l %r2, 0(%r3)
162 ; CHECK: [[LOOP:\.[^:]*]]:
163 ; CHECK: lr [[NEW:%r[0-9]+]], %r2
164 ; CHECK: crjle %r2, [[LIMIT]], [[KEEP:\..*]]
165 ; CHECK: lhi [[NEW]], 42
166 ; CHECK: cs %r2, [[NEW]], 0(%r3)
169 %res = atomicrmw min i32 *%ptr, i32 42 seq_cst