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
| ; Test 64-bit equality comparisons that are really between a memory halfword
; and a constant.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
; Check the low end of the 16-bit unsigned range, with zero extension.
define double @f1(double %a, double %b, i16 *%ptr) {
; CHECK-LABEL: f1:
; CHECK: clhhsi 0(%r2), 0
; CHECK-NEXT: ber %r14
; CHECK: br %r14
%val = load i16, i16 *%ptr
%ext = zext i16 %val to i64
%cond = icmp eq i64 %ext, 0
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the high end of the 16-bit unsigned range, with zero extension.
define double @f2(double %a, double %b, i16 *%ptr) {
; CHECK-LABEL: f2:
; CHECK: clhhsi 0(%r2), 65535
; CHECK-NEXT: ber %r14
; CHECK: br %r14
%val = load i16, i16 *%ptr
%ext = zext i16 %val to i64
%cond = icmp eq i64 %ext, 65535
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the next value up, with zero extension. The condition is always false.
define double @f3(double %a, double %b, i16 *%ptr) {
; CHECK-LABEL: f3:
; CHECK-NOT: clhhsi
; CHECK: br %r14
%val = load i16, i16 *%ptr
%ext = zext i16 %val to i64
%cond = icmp eq i64 %ext, 65536
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check comparisons with -1, with zero extension.
; This condition is also always false.
define double @f4(double %a, double %b, i16 *%ptr) {
; CHECK-LABEL: f4:
; CHECK-NOT: clhhsi
; CHECK: br %r14
%val = load i16, i16 *%ptr
%ext = zext i16 %val to i64
%cond = icmp eq i64 %ext, -1
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check comparisons with 0, using sign extension.
define double @f5(double %a, double %b, i16 *%ptr) {
; CHECK-LABEL: f5:
; CHECK: clhhsi 0(%r2), 0
; CHECK-NEXT: ber %r14
; CHECK: br %r14
%val = load i16, i16 *%ptr
%ext = sext i16 %val to i64
%cond = icmp eq i64 %ext, 0
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the high end of the signed 16-bit range, using sign extension.
define double @f6(double %a, double %b, i16 *%ptr) {
; CHECK-LABEL: f6:
; CHECK: clhhsi 0(%r2), 32767
; CHECK-NEXT: ber %r14
; CHECK: br %r14
%val = load i16, i16 *%ptr
%ext = sext i16 %val to i64
%cond = icmp eq i64 %ext, 32767
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the next value up, using sign extension.
; The condition is always false.
define double @f7(double %a, double %b, i16 *%ptr) {
; CHECK-LABEL: f7:
; CHECK-NOT: clhhsi
; CHECK: br %r14
%val = load i16, i16 *%ptr
%ext = sext i16 %val to i64
%cond = icmp eq i64 %ext, 32768
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check comparisons with -1, using sign extension.
define double @f8(double %a, double %b, i16 *%ptr) {
; CHECK-LABEL: f8:
; CHECK: clhhsi 0(%r2), 65535
; CHECK-NEXT: ber %r14
; CHECK: br %r14
%val = load i16, i16 *%ptr
%ext = sext i16 %val to i64
%cond = icmp eq i64 %ext, -1
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the low end of the signed 16-bit range, using sign extension.
define double @f9(double %a, double %b, i16 *%ptr) {
; CHECK-LABEL: f9:
; CHECK: clhhsi 0(%r2), 32768
; CHECK-NEXT: ber %r14
; CHECK: br %r14
%val = load i16, i16 *%ptr
%ext = sext i16 %val to i64
%cond = icmp eq i64 %ext, -32768
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the next value down, using sign extension.
; The condition is always false.
define double @f10(double %a, double %b, i16 *%ptr) {
; CHECK-LABEL: f10:
; CHECK-NOT: clhhsi
; CHECK: br %r14
%val = load i16, i16 *%ptr
%ext = sext i16 %val to i64
%cond = icmp eq i64 %ext, -32769
%res = select i1 %cond, double %a, double %b
ret double %res
}
|