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 8-bit atomic ORs.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK
; 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 OR 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 i8 @f1(i8 *%src, i8 %b) {
; CHECK-LABEL: f1:
; CHECK: sllg [[SHIFT:%r[1-9]+]], %r2, 3
; CHECK: nill %r2, 65532
; CHECK: l [[OLD:%r[0-9]+]], 0(%r2)
; CHECK: [[LABEL:\.[^:]*]]:
; CHECK: rll [[ROT:%r[0-9]+]], [[OLD]], 0([[SHIFT]])
; CHECK: or [[ROT]], %r3
; CHECK: rll [[NEW:%r[0-9]+]], [[ROT]], 0({{%r[1-9]+}})
; CHECK: cs [[OLD]], [[NEW]], 0(%r2)
; CHECK: jl [[LABEL]]
; CHECK: rll %r2, [[OLD]], 8([[SHIFT]])
; CHECK: br %r14
;
; CHECK-SHIFT1-LABEL: f1:
; CHECK-SHIFT1: sllg [[SHIFT:%r[1-9]+]], %r2, 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, 24
; CHECK-SHIFT2: rll
; CHECK-SHIFT2: or {{%r[0-9]+}}, %r3
; CHECK-SHIFT2: rll
; CHECK-SHIFT2: rll
; CHECK-SHIFT2: br %r14
%res = atomicrmw or i8 *%src, i8 %b seq_cst
ret i8 %res
}
; Check the minimum signed value. We OR the rotated word with 0x80000000.
define i8 @f2(i8 *%src) {
; CHECK-LABEL: f2:
; CHECK: sllg [[SHIFT:%r[1-9]+]], %r2, 3
; CHECK: nill %r2, 65532
; CHECK: l [[OLD:%r[0-9]+]], 0(%r2)
; CHECK: [[LABEL:\.[^:]*]]:
; CHECK: rll [[ROT:%r[0-9]+]], [[OLD]], 0([[SHIFT]])
; CHECK: oilh [[ROT]], 32768
; CHECK: rll [[NEW:%r[0-9]+]], [[ROT]], 0([[NEGSHIFT:%r[1-9]+]])
; CHECK: cs [[OLD]], [[NEW]], 0(%r2)
; CHECK: jl [[LABEL]]
; CHECK: rll %r2, [[OLD]], 8([[SHIFT]])
; CHECK: br %r14
;
; CHECK-SHIFT1-LABEL: f2:
; CHECK-SHIFT1: sllg [[SHIFT:%r[1-9]+]], %r2, 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 or i8 *%src, i8 -128 seq_cst
ret i8 %res
}
; Check ORs of -2 (-1 isn't useful). We OR the rotated word with 0xfe000000.
define i8 @f3(i8 *%src) {
; CHECK-LABEL: f3:
; CHECK: oilh [[ROT]], 65024
; CHECK: br %r14
;
; CHECK-SHIFT1-LABEL: f3:
; CHECK-SHIFT1: br %r14
; CHECK-SHIFT2-LABEL: f3:
; CHECK-SHIFT2: br %r14
%res = atomicrmw or i8 *%src, i8 -2 seq_cst
ret i8 %res
}
; Check ORs of 1. We OR the rotated word with 0x01000000.
define i8 @f4(i8 *%src) {
; CHECK-LABEL: f4:
; CHECK: oilh [[ROT]], 256
; CHECK: br %r14
;
; CHECK-SHIFT1-LABEL: f4:
; CHECK-SHIFT1: br %r14
; CHECK-SHIFT2-LABEL: f4:
; CHECK-SHIFT2: br %r14
%res = atomicrmw or i8 *%src, i8 1 seq_cst
ret i8 %res
}
; Check the maximum signed value. We OR the rotated word with 0x7f000000.
define i8 @f5(i8 *%src) {
; CHECK-LABEL: f5:
; CHECK: oilh [[ROT]], 32512
; CHECK: br %r14
;
; CHECK-SHIFT1-LABEL: f5:
; CHECK-SHIFT1: br %r14
; CHECK-SHIFT2-LABEL: f5:
; CHECK-SHIFT2: br %r14
%res = atomicrmw or i8 *%src, i8 127 seq_cst
ret i8 %res
}
; Check ORs of a large unsigned value. We OR the rotated word with
; 0xfd000000.
define i8 @f6(i8 *%src) {
; CHECK-LABEL: f6:
; CHECK: oilh [[ROT]], 64768
; CHECK: br %r14
;
; CHECK-SHIFT1-LABEL: f6:
; CHECK-SHIFT1: br %r14
; CHECK-SHIFT2-LABEL: f6:
; CHECK-SHIFT2: br %r14
%res = atomicrmw or i8 *%src, i8 253 seq_cst
ret i8 %res
}
|
