1 ; Test 32-bit compare and swap.
3 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
5 ; Check the low end of the CS range.
6 define i32 @f1(i32 %cmp, i32 %swap, i32 *%src) {
8 ; CHECK: cs %r2, %r3, 0(%r4)
10 %pair = cmpxchg i32 *%src, i32 %cmp, i32 %swap seq_cst seq_cst
11 %val = extractvalue { i32, i1 } %pair, 0
15 ; Check the high end of the aligned CS range.
16 define i32 @f2(i32 %cmp, i32 %swap, i32 *%src) {
18 ; CHECK: cs %r2, %r3, 4092(%r4)
20 %ptr = getelementptr i32, i32 *%src, i64 1023
21 %pair = cmpxchg i32 *%ptr, i32 %cmp, i32 %swap seq_cst seq_cst
22 %val = extractvalue { i32, i1 } %pair, 0
26 ; Check the next word up, which should use CSY instead of CS.
27 define i32 @f3(i32 %cmp, i32 %swap, i32 *%src) {
29 ; CHECK: csy %r2, %r3, 4096(%r4)
31 %ptr = getelementptr i32, i32 *%src, i64 1024
32 %pair = cmpxchg i32 *%ptr, i32 %cmp, i32 %swap seq_cst seq_cst
33 %val = extractvalue { i32, i1 } %pair, 0
37 ; Check the high end of the aligned CSY range.
38 define i32 @f4(i32 %cmp, i32 %swap, i32 *%src) {
40 ; CHECK: csy %r2, %r3, 524284(%r4)
42 %ptr = getelementptr i32, i32 *%src, i64 131071
43 %pair = cmpxchg i32 *%ptr, i32 %cmp, i32 %swap seq_cst seq_cst
44 %val = extractvalue { i32, i1 } %pair, 0
48 ; Check the next word up, which needs separate address logic.
49 ; Other sequences besides this one would be OK.
50 define i32 @f5(i32 %cmp, i32 %swap, i32 *%src) {
52 ; CHECK: agfi %r4, 524288
53 ; CHECK: cs %r2, %r3, 0(%r4)
55 %ptr = getelementptr i32, i32 *%src, i64 131072
56 %pair = cmpxchg i32 *%ptr, i32 %cmp, i32 %swap seq_cst seq_cst
57 %val = extractvalue { i32, i1 } %pair, 0
61 ; Check the high end of the negative aligned CSY range.
62 define i32 @f6(i32 %cmp, i32 %swap, i32 *%src) {
64 ; CHECK: csy %r2, %r3, -4(%r4)
66 %ptr = getelementptr i32, i32 *%src, i64 -1
67 %pair = cmpxchg i32 *%ptr, i32 %cmp, i32 %swap seq_cst seq_cst
68 %val = extractvalue { i32, i1 } %pair, 0
72 ; Check the low end of the CSY range.
73 define i32 @f7(i32 %cmp, i32 %swap, i32 *%src) {
75 ; CHECK: csy %r2, %r3, -524288(%r4)
77 %ptr = getelementptr i32, i32 *%src, i64 -131072
78 %pair = cmpxchg i32 *%ptr, i32 %cmp, i32 %swap seq_cst seq_cst
79 %val = extractvalue { i32, i1 } %pair, 0
83 ; Check the next word down, which needs separate address logic.
84 ; Other sequences besides this one would be OK.
85 define i32 @f8(i32 %cmp, i32 %swap, i32 *%src) {
87 ; CHECK: agfi %r4, -524292
88 ; CHECK: cs %r2, %r3, 0(%r4)
90 %ptr = getelementptr i32, i32 *%src, i64 -131073
91 %pair = cmpxchg i32 *%ptr, i32 %cmp, i32 %swap seq_cst seq_cst
92 %val = extractvalue { i32, i1 } %pair, 0
96 ; Check that CS does not allow an index.
97 define i32 @f9(i32 %cmp, i32 %swap, i64 %src, i64 %index) {
100 ; CHECK: cs %r2, %r3, 0(%r4)
102 %add1 = add i64 %src, %index
103 %ptr = inttoptr i64 %add1 to i32 *
104 %pair = cmpxchg i32 *%ptr, i32 %cmp, i32 %swap seq_cst seq_cst
105 %val = extractvalue { i32, i1 } %pair, 0
109 ; Check that CSY does not allow an index.
110 define i32 @f10(i32 %cmp, i32 %swap, i64 %src, i64 %index) {
112 ; CHECK: agr %r4, %r5
113 ; CHECK: csy %r2, %r3, 4096(%r4)
115 %add1 = add i64 %src, %index
116 %add2 = add i64 %add1, 4096
117 %ptr = inttoptr i64 %add2 to i32 *
118 %pair = cmpxchg i32 *%ptr, i32 %cmp, i32 %swap seq_cst seq_cst
119 %val = extractvalue { i32, i1 } %pair, 0
123 ; Check that a constant %cmp value is loaded into a register first.
124 define i32 @f11(i32 %dummy, i32 %swap, i32 *%ptr) {
126 ; CHECK: lhi %r2, 1001
127 ; CHECK: cs %r2, %r3, 0(%r4)
129 %pair = cmpxchg i32 *%ptr, i32 1001, i32 %swap seq_cst seq_cst
130 %val = extractvalue { i32, i1 } %pair, 0
134 ; Check that a constant %swap value is loaded into a register first.
135 define i32 @f12(i32 %cmp, i32 *%ptr) {
137 ; CHECK: lhi [[SWAP:%r[0-9]+]], 1002
138 ; CHECK: cs %r2, [[SWAP]], 0(%r3)
140 %pair = cmpxchg i32 *%ptr, i32 %cmp, i32 1002 seq_cst seq_cst
141 %val = extractvalue { i32, i1 } %pair, 0
145 ; Check generating the comparison result.
147 ; CHECK: cs %r2, %r3, 0(%r4)
148 ; CHECK-NEXT: ipm %r2
149 ; CHECK-NEXT: afi %r2, -268435456
150 ; CHECK-NEXT: srl %r2, 31
152 define i32 @f13(i32 %cmp, i32 %swap, i32 *%src) {
153 %pairval = cmpxchg i32 *%src, i32 %cmp, i32 %swap seq_cst seq_cst
154 %val = extractvalue { i32, i1 } %pairval, 1
155 %res = zext i1 %val to i32
161 ; Check using the comparison result for a branch.
163 ; CHECK: cs %r2, %r3, 0(%r4)
166 define void @f14(i32 %cmp, i32 %swap, i32 *%src) {
167 %pairval = cmpxchg i32 *%src, i32 %cmp, i32 %swap seq_cst seq_cst
168 %cond = extractvalue { i32, i1 } %pairval, 1
169 br i1 %cond, label %call, label %exit
179 ; ... and the same with the inverted direction.
181 ; CHECK: cs %r2, %r3, 0(%r4)
184 define void @f15(i32 %cmp, i32 %swap, i32 *%src) {
185 %pairval = cmpxchg i32 *%src, i32 %cmp, i32 %swap seq_cst seq_cst
186 %cond = extractvalue { i32, i1 } %pairval, 1
187 br i1 %cond, label %exit, label %call