1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
|
// RUN: %clang_cc1 -triple x86_64 -emit-llvm %s \
// RUN: -o - | FileCheck -check-prefixes=CHECK,NATIVE %s
// RUN: %clang_cc1 -triple riscv32 -target-feature -a -emit-llvm %s \
// RUN: -o - | FileCheck -check-prefixes=CHECK,LIBCALL %s
void foo(int x)
{
_Atomic(int) i = 0;
_Atomic(short) j = 0;
// Check that multiply / divides on atomics produce a cmpxchg loop
i *= 2;
// NATIVE: mul nsw i32
// NATIVE: cmpxchg ptr {{.*}} seq_cst, align 4
// LIBCALL: mul nsw i32
// LIBCALL: i1 @__atomic_compare_exchange(i32 noundef 4,
i /= 2;
// NATIVE: sdiv i32
// NATIVE: cmpxchg ptr {{.*}} seq_cst, align 4
// LIBCALL: sdiv i32
// LIBCALL: i1 @__atomic_compare_exchange(i32 noundef 4,
j /= x;
// NATIVE: sdiv i32
// NATIVE: cmpxchg ptr {{.*}} seq_cst, align 2
// LIBCALL: sdiv i32
// LIBCALL: i1 @__atomic_compare_exchange(i32 noundef 2,
}
// LIBCALL: declare void @__atomic_load(i32, ptr, ptr, i32) [[LC_ATTRS:#[0-9]+]]
// LIBCALL: declare i1 @__atomic_compare_exchange(i32, ptr, ptr, ptr, i32, i32) [[LC_ATTRS:#[0-9]+]]
extern _Atomic _Bool b;
_Bool bar(void) {
// NATIVE-LABEL: @bar
// NATIVE: %[[load:.*]] = load atomic i8, ptr @b seq_cst, align 1
// NATIVE: %[[tobool:.*]] = trunc i8 %[[load]] to i1
// NATIVE: ret i1 %[[tobool]]
// LIBCALL-LABEL: @bar
// LIBCALL: call void @__atomic_load(i32 noundef 1, ptr noundef @b, ptr noundef %atomic-temp, i32 noundef 5)
// LIBCALL: %[[load:.*]] = load i8, ptr %atomic-temp
// LIBCALL: %[[tobool:.*]] = trunc i8 %[[load]] to i1
// LIBCALL: ret i1 %[[tobool]]
return b;
}
extern _Atomic(_Complex int) x;
void baz(int y) {
// NATIVE-LABEL: @baz
// NATIVE: store atomic i64 {{.*}} seq_cst, align 8
// LIBCALL-LABEL: @baz
// LIBCALL: call void @__atomic_store
x += y;
}
// LIBCALL: declare void @__atomic_store(i32, ptr, ptr, i32) [[LC_ATTRS:#[0-9]+]]
_Atomic(int) compound_add(_Atomic(int) in) {
// CHECK-LABEL: @compound_add
// CHECK: [[OLD:%.*]] = atomicrmw add ptr {{.*}}, i32 5 seq_cst, align 4
// CHECK: [[NEW:%.*]] = add i32 [[OLD]], 5
// CHECK: ret i32 [[NEW]]
return (in += 5);
}
_Atomic(int) compound_sub(_Atomic(int) in) {
// CHECK-LABEL: @compound_sub
// CHECK: [[OLD:%.*]] = atomicrmw sub ptr {{.*}}, i32 5 seq_cst, align 4
// CHECK: [[NEW:%.*]] = sub i32 [[OLD]], 5
// CHECK: ret i32 [[NEW]]
return (in -= 5);
}
_Atomic(int) compound_xor(_Atomic(int) in) {
// CHECK-LABEL: @compound_xor
// CHECK: [[OLD:%.*]] = atomicrmw xor ptr {{.*}}, i32 5 seq_cst, align 4
// CHECK: [[NEW:%.*]] = xor i32 [[OLD]], 5
// CHECK: ret i32 [[NEW]]
return (in ^= 5);
}
_Atomic(int) compound_or(_Atomic(int) in) {
// CHECK-LABEL: @compound_or
// CHECK: [[OLD:%.*]] = atomicrmw or ptr {{.*}}, i32 5 seq_cst, align 4
// CHECK: [[NEW:%.*]] = or i32 [[OLD]], 5
// CHECK: ret i32 [[NEW]]
return (in |= 5);
}
_Atomic(int) compound_and(_Atomic(int) in) {
// CHECK-LABEL: @compound_and
// CHECK: [[OLD:%.*]] = atomicrmw and ptr {{.*}}, i32 5 seq_cst, align 4
// CHECK: [[NEW:%.*]] = and i32 [[OLD]], 5
// CHECK: ret i32 [[NEW]]
return (in &= 5);
}
_Atomic(int) compound_mul(_Atomic(int) in) {
// NATIVE-LABEL: @compound_mul
// NATIVE: cmpxchg ptr {{%.*}}, i32 {{%.*}}, i32 [[NEW:%.*]] seq_cst seq_cst, align 4
// NATIVE: ret i32 [[NEW]]
// LIBCALL-LABEL: @compound_mul
// LIBCALL: i1 @__atomic_compare_exchange(i32 noundef 4,
return (in *= 5);
}
// LIBCALL: [[LC_ATTRS]] = { nounwind willreturn }
|
