atomicrmw-nand-01.ll
3.98 KB
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
133
134
135
136
137
138
139
; Test 8-bit atomic NANDs.
;
; 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 NAND 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, and that the low bits are set to 1. This sequence is
; independent of the other loop prologue instructions.
define i8 @f1(i8 *%src, i8 %b) {
; CHECK-LABEL: f1:
; CHECK: risbg [[RISBG:%r[1-9]+]], %r2, 0, 189, 0{{$}}
; CHECK-DAG: sll %r2, 3
; CHECK-DAG: l [[OLD:%r[0-9]+]], 0([[RISBG]])
; CHECK: [[LABEL:\.[^:]*]]:
; CHECK: rll [[ROT:%r[0-9]+]], [[OLD]], 0(%r2)
; CHECK: nr [[ROT]], %r3
; CHECK: xilf [[ROT]], 4278190080
; CHECK: rll [[NEW:%r[0-9]+]], [[ROT]], 0({{%r[1-9]+}})
; CHECK: cs [[OLD]], [[NEW]], 0([[RISBG]])
; CHECK: jl [[LABEL]]
; CHECK: rll %r2, [[OLD]], 8(%r2)
; CHECK: br %r14
;
; CHECK-SHIFT1-LABEL: f1:
; CHECK-SHIFT1: sll %r2, 3
; CHECK-SHIFT1: lcr [[NEGSHIFT:%r[1-9]+]], %r2
; CHECK-SHIFT1: rll
; CHECK-SHIFT1: rll {{%r[0-9]+}}, {{%r[0-9]+}}, 0([[NEGSHIFT]])
; CHECK-SHIFT1: rll
; CHECK-SHIFT1: br %r14
;
; CHECK-SHIFT2-LABEL: f1:
; CHECK-SHIFT2: sll %r3, 24
; CHECK-SHIFT2: oilf %r3, 16777215
; CHECK-SHIFT2: rll
; CHECK-SHIFT2: nr {{%r[0-9]+}}, %r3
; CHECK-SHIFT2: rll
; CHECK-SHIFT2: rll
; CHECK-SHIFT2: br %r14
%res = atomicrmw nand i8 *%src, i8 %b seq_cst
ret i8 %res
}
; Check the minimum signed value. We AND the rotated word with 0x80ffffff.
define i8 @f2(i8 *%src) {
; CHECK-LABEL: f2:
; CHECK: risbg [[RISBG:%r[1-9]+]], %r2, 0, 189, 0{{$}}
; 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: nilh [[ROT]], 33023
; CHECK: xilf [[ROT]], 4278190080
; 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]], 8(%r2)
; CHECK: br %r14
;
; CHECK-SHIFT1-LABEL: f2:
; CHECK-SHIFT1: sll %r2, 3
; CHECK-SHIFT1: lcr [[NEGSHIFT:%r[1-9]+]], %r2
; 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 nand i8 *%src, i8 -128 seq_cst
ret i8 %res
}
; Check NANDs of -2 (-1 isn't useful). We AND the rotated word with 0xfeffffff.
define i8 @f3(i8 *%src) {
; CHECK-LABEL: f3:
; CHECK: nilh [[ROT]], 65279
; CHECK: xilf [[ROT]], 4278190080
; CHECK: br %r14
;
; CHECK-SHIFT1-LABEL: f3:
; CHECK-SHIFT1: br %r14
; CHECK-SHIFT2-LABEL: f3:
; CHECK-SHIFT2: br %r14
%res = atomicrmw nand i8 *%src, i8 -2 seq_cst
ret i8 %res
}
; Check NANDs of 1. We AND the rotated word with 0x01ffffff.
define i8 @f4(i8 *%src) {
; CHECK-LABEL: f4:
; CHECK: nilh [[ROT]], 511
; CHECK: xilf [[ROT]], 4278190080
; CHECK: br %r14
;
; CHECK-SHIFT1-LABEL: f4:
; CHECK-SHIFT1: br %r14
; CHECK-SHIFT2-LABEL: f4:
; CHECK-SHIFT2: br %r14
%res = atomicrmw nand i8 *%src, i8 1 seq_cst
ret i8 %res
}
; Check the maximum signed value. We AND the rotated word with 0x7fffffff.
define i8 @f5(i8 *%src) {
; CHECK-LABEL: f5:
; CHECK: nilh [[ROT]], 32767
; CHECK: xilf [[ROT]], 4278190080
; CHECK: br %r14
;
; CHECK-SHIFT1-LABEL: f5:
; CHECK-SHIFT1: br %r14
; CHECK-SHIFT2-LABEL: f5:
; CHECK-SHIFT2: br %r14
%res = atomicrmw nand i8 *%src, i8 127 seq_cst
ret i8 %res
}
; Check NANDs of a large unsigned value. We AND the rotated word with
; 0xfdffffff.
define i8 @f6(i8 *%src) {
; CHECK-LABEL: f6:
; CHECK: nilh [[ROT]], 65023
; CHECK: xilf [[ROT]], 4278190080
; CHECK: br %r14
;
; CHECK-SHIFT1-LABEL: f6:
; CHECK-SHIFT1: br %r14
; CHECK-SHIFT2-LABEL: f6:
; CHECK-SHIFT2: br %r14
%res = atomicrmw nand i8 *%src, i8 253 seq_cst
ret i8 %res
}