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
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
; Test 16-bit atomic additions.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-SHIFT1
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-SHIFT2
; Check addition of a variable.
; - CHECK is for the main loop.
; - CHECK-SHIFT1 makes sure that the negated shift count used by the second
; RLL is set up correctly. The negation is independent of the NILL and L
; tested in CHECK.
; - CHECK-SHIFT2 makes sure that %b is shifted into the high part of the word
; before being used. This shift is independent of the other loop prologue
; instructions.
define i16 @f1(ptr %src, i16 %b) {
; CHECK-LABEL: f1:
; CHECK: risbg [[RISBG:%r[1-9]+]], %r2, 0, 189, 0{{$}}
; CHECK-DAG: sll %r2, 3
; CHECK-DAG: l [[OLD:%r[0-9]+]], 0([[RISBG]])
; CHECK: [[LABEL:\.[^:]*]]:
; CHECK: rll [[ROT:%r[0-9]+]], [[OLD]], 0(%r2)
; CHECK: ar [[ROT]], %r3
; CHECK: rll [[NEW:%r[0-9]+]], [[ROT]], 0({{%r[1-9]+}})
; CHECK: cs [[OLD]], [[NEW]], 0([[RISBG]])
; CHECK: jl [[LABEL]]
; CHECK: rll %r2, [[OLD]], 16(%r2)
; CHECK: br %r14
;
; CHECK-SHIFT1-LABEL: f1:
; CHECK-SHIFT1: sll [[SHIFT:%r[1-9]+]], 3
; CHECK-SHIFT1: lcr [[NEGSHIFT:%r[1-9]+]], [[SHIFT]]
; CHECK-SHIFT1: rll
; CHECK-SHIFT1: rll {{%r[0-9]+}}, {{%r[0-9]+}}, 0([[NEGSHIFT]])
; CHECK-SHIFT1: rll
; CHECK-SHIFT1: br %r14
;
; CHECK-SHIFT2-LABEL: f1:
; CHECK-SHIFT2: sll %r3, 16
; CHECK-SHIFT2: rll
; CHECK-SHIFT2: ar {{%r[0-9]+}}, %r3
; CHECK-SHIFT2: rll
; CHECK-SHIFT2: rll
; CHECK-SHIFT2: br %r14
%res = atomicrmw add ptr %src, i16 %b seq_cst
ret i16 %res
}
; Check the minimum signed value. We add 0x80000000 to the rotated word.
define i16 @f2(ptr %src) {
; CHECK-LABEL: f2:
; CHECK: risbg [[RISBG:%r[1-9]+]], %r2, 0, 189, 0
; CHECK-DAG: sll %r2, 3
; CHECK-DAG: l [[OLD:%r[0-9]+]], 0([[RISBG]])
; CHECK: [[LABEL:\.[^:]*]]:
; CHECK: rll [[ROT:%r[0-9]+]], [[OLD]], 0(%r2)
; CHECK: afi [[ROT]], -2147483648
; CHECK: rll [[NEW:%r[0-9]+]], [[ROT]], 0([[NEGSHIFT:%r[1-9]+]])
; CHECK: cs [[OLD]], [[NEW]], 0([[RISBG]])
; CHECK: jl [[LABEL]]
; CHECK: rll %r2, [[OLD]], 16(%r2)
; CHECK: br %r14
;
; CHECK-SHIFT1-LABEL: f2:
; CHECK-SHIFT1: sll [[SHIFT:%r[1-9]+]], 3
; CHECK-SHIFT1: lcr [[NEGSHIFT:%r[1-9]+]], [[SHIFT]]
; CHECK-SHIFT1: rll
; CHECK-SHIFT1: rll {{%r[0-9]+}}, {{%r[0-9]+}}, 0([[NEGSHIFT]])
; CHECK-SHIFT1: rll
; CHECK-SHIFT1: br %r14
;
; CHECK-SHIFT2-LABEL: f2:
; CHECK-SHIFT2: br %r14
%res = atomicrmw add ptr %src, i16 -32768 seq_cst
ret i16 %res
}
; Check addition of -1. We add 0xffff0000 to the rotated word.
define i16 @f3(ptr %src) {
; CHECK-LABEL: f3:
; CHECK: afi [[ROT]], -65536
; CHECK: br %r14
;
; CHECK-SHIFT1-LABEL: f3:
; CHECK-SHIFT1: br %r14
; CHECK-SHIFT2-LABEL: f3:
; CHECK-SHIFT2: br %r14
%res = atomicrmw add ptr %src, i16 -1 seq_cst
ret i16 %res
}
; Check addition of 1. We add 0x00010000 to the rotated word.
define i16 @f4(ptr %src) {
; CHECK-LABEL: f4:
; CHECK: afi [[ROT]], 65536
; CHECK: br %r14
;
; CHECK-SHIFT1-LABEL: f4:
; CHECK-SHIFT1: br %r14
; CHECK-SHIFT2-LABEL: f4:
; CHECK-SHIFT2: br %r14
%res = atomicrmw add ptr %src, i16 1 seq_cst
ret i16 %res
}
; Check the maximum signed value. We add 0x7fff0000 to the rotated word.
define i16 @f5(ptr %src) {
; CHECK-LABEL: f5:
; CHECK: afi [[ROT]], 2147418112
; CHECK: br %r14
;
; CHECK-SHIFT1-LABEL: f5:
; CHECK-SHIFT1: br %r14
; CHECK-SHIFT2-LABEL: f5:
; CHECK-SHIFT2: br %r14
%res = atomicrmw add ptr %src, i16 32767 seq_cst
ret i16 %res
}
; Check addition of a large unsigned value. We add 0xfffe0000 to the
; rotated word, expressed as a negative AFI operand.
define i16 @f6(ptr %src) {
; CHECK-LABEL: f6:
; CHECK: afi [[ROT]], -131072
; CHECK: br %r14
;
; CHECK-SHIFT1-LABEL: f6:
; CHECK-SHIFT1: br %r14
; CHECK-SHIFT2-LABEL: f6:
; CHECK-SHIFT2: br %r14
%res = atomicrmw add ptr %src, i16 65534 seq_cst
ret i16 %res
}
|
