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:\.[^:]*]]:
41 ; CHECK: lr [[NEW:%r[0-9]+]], %r2
42 ; CHECK: jle [[KEEP:\..*]]
43 ; CHECK: lr [[NEW]], %r4
44 ; CHECK: cs %r2, [[NEW]], 0(%r3)
47 %res = atomicrmw umin i32 *%src, i32 %b seq_cst
51 ; Check unsigned maximum.
52 define i32 @f4(i32 %dummy, i32 *%src, i32 %b) {
54 ; CHECK: l %r2, 0(%r3)
55 ; CHECK: [[LOOP:\.[^:]*]]:
57 ; CHECK: lr [[NEW:%r[0-9]+]], %r2
58 ; CHECK: jhe [[KEEP:\..*]]
59 ; CHECK: lr [[NEW]], %r4
60 ; CHECK: cs %r2, [[NEW]], 0(%r3)
63 %res = atomicrmw umax i32 *%src, i32 %b seq_cst
67 ; Check the high end of the aligned CS range.
68 define i32 @f5(i32 %dummy, i32 *%src, i32 %b) {
70 ; CHECK: l %r2, 4092(%r3)
71 ; CHECK: cs %r2, {{%r[0-9]+}}, 4092(%r3)
73 %ptr = getelementptr i32 *%src, i64 1023
74 %res = atomicrmw min i32 *%ptr, i32 %b seq_cst
78 ; Check the next word up, which requires CSY.
79 define i32 @f6(i32 %dummy, i32 *%src, i32 %b) {
81 ; CHECK: ly %r2, 4096(%r3)
82 ; CHECK: csy %r2, {{%r[0-9]+}}, 4096(%r3)
84 %ptr = getelementptr i32 *%src, i64 1024
85 %res = atomicrmw min i32 *%ptr, i32 %b seq_cst
89 ; Check the high end of the aligned CSY range.
90 define i32 @f7(i32 %dummy, i32 *%src, i32 %b) {
92 ; CHECK: ly %r2, 524284(%r3)
93 ; CHECK: csy %r2, {{%r[0-9]+}}, 524284(%r3)
95 %ptr = getelementptr i32 *%src, i64 131071
96 %res = atomicrmw min i32 *%ptr, i32 %b seq_cst
100 ; Check the next word up, which needs separate address logic.
101 define i32 @f8(i32 %dummy, i32 *%src, i32 %b) {
103 ; CHECK: agfi %r3, 524288
104 ; CHECK: l %r2, 0(%r3)
105 ; CHECK: cs %r2, {{%r[0-9]+}}, 0(%r3)
107 %ptr = getelementptr i32 *%src, i64 131072
108 %res = atomicrmw min i32 *%ptr, i32 %b seq_cst
112 ; Check the high end of the negative aligned CSY range.
113 define i32 @f9(i32 %dummy, i32 *%src, i32 %b) {
115 ; CHECK: ly %r2, -4(%r3)
116 ; CHECK: csy %r2, {{%r[0-9]+}}, -4(%r3)
118 %ptr = getelementptr i32 *%src, i64 -1
119 %res = atomicrmw min i32 *%ptr, i32 %b seq_cst
123 ; Check the low end of the CSY range.
124 define i32 @f10(i32 %dummy, i32 *%src, i32 %b) {
126 ; CHECK: ly %r2, -524288(%r3)
127 ; CHECK: csy %r2, {{%r[0-9]+}}, -524288(%r3)
129 %ptr = getelementptr i32 *%src, i64 -131072
130 %res = atomicrmw min i32 *%ptr, i32 %b seq_cst
134 ; Check the next word down, which needs separate address logic.
135 define i32 @f11(i32 %dummy, i32 *%src, i32 %b) {
137 ; CHECK: agfi %r3, -524292
138 ; CHECK: l %r2, 0(%r3)
139 ; CHECK: cs %r2, {{%r[0-9]+}}, 0(%r3)
141 %ptr = getelementptr i32 *%src, i64 -131073
142 %res = atomicrmw min i32 *%ptr, i32 %b seq_cst
146 ; Check that indexed addresses are not allowed.
147 define i32 @f12(i32 %dummy, i64 %base, i64 %index, i32 %b) {
149 ; CHECK: agr %r3, %r4
150 ; CHECK: l %r2, 0(%r3)
151 ; CHECK: cs %r2, {{%r[0-9]+}}, 0(%r3)
153 %add = add i64 %base, %index
154 %ptr = inttoptr i64 %add to i32 *
155 %res = atomicrmw min i32 *%ptr, i32 %b seq_cst
159 ; Check that constants are forced into a register.
160 define i32 @f13(i32 %dummy, i32 *%ptr) {
162 ; CHECK: lhi [[LIMIT:%r[0-9]+]], 42
163 ; CHECK: l %r2, 0(%r3)
164 ; CHECK: [[LOOP:\.[^:]*]]:
165 ; CHECK: lr [[NEW:%r[0-9]+]], %r2
166 ; CHECK: crjle %r2, [[LIMIT]], [[KEEP:\..*]]
167 ; CHECK: lr [[NEW]], [[LIMIT]]
168 ; CHECK: cs %r2, [[NEW]], 0(%r3)
169 ; CHECK: jlh [[LOOP]]
171 %res = atomicrmw min i32 *%ptr, i32 42 seq_cst