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
140
141
142
143
144
145
146
147
148
149
150
151
| ; Test 128-bit floating-point loads.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu -verify-machineinstrs | FileCheck %s
; Check loads with no offset.
define double @f1(i64 %src) {
; CHECK-LABEL: f1:
; CHECK: ld %f0, 0(%r2)
; CHECK: ld %f2, 8(%r2)
; CHECK: br %r14
%ptr = inttoptr i64 %src to fp128 *
%val = load fp128, fp128 *%ptr
%trunc = fptrunc fp128 %val to double
ret double %trunc
}
; Check the highest aligned offset that allows LD for both halves.
define double @f2(i64 %src) {
; CHECK-LABEL: f2:
; CHECK: ld %f0, 4080(%r2)
; CHECK: ld %f2, 4088(%r2)
; CHECK: br %r14
%add = add i64 %src, 4080
%ptr = inttoptr i64 %add to fp128 *
%val = load fp128, fp128 *%ptr
%trunc = fptrunc fp128 %val to double
ret double %trunc
}
; Check the next doubleword up, which requires a mixture of LD and LDY.
define double @f3(i64 %src) {
; CHECK-LABEL: f3:
; CHECK: ld %f0, 4088(%r2)
; CHECK: ldy %f2, 4096(%r2)
; CHECK: br %r14
%add = add i64 %src, 4088
%ptr = inttoptr i64 %add to fp128 *
%val = load fp128, fp128 *%ptr
%trunc = fptrunc fp128 %val to double
ret double %trunc
}
; Check the next doubleword after that, which requires LDY for both halves.
define double @f4(i64 %src) {
; CHECK-LABEL: f4:
; CHECK: ldy %f0, 4096(%r2)
; CHECK: ldy %f2, 4104(%r2)
; CHECK: br %r14
%add = add i64 %src, 4096
%ptr = inttoptr i64 %add to fp128 *
%val = load fp128, fp128 *%ptr
%trunc = fptrunc fp128 %val to double
ret double %trunc
}
; Check the highest aligned offset that allows LDY for both halves.
define double @f5(i64 %src) {
; CHECK-LABEL: f5:
; CHECK: ldy %f0, 524272(%r2)
; CHECK: ldy %f2, 524280(%r2)
; CHECK: br %r14
%add = add i64 %src, 524272
%ptr = inttoptr i64 %add to fp128 *
%val = load fp128, fp128 *%ptr
%trunc = fptrunc fp128 %val to double
ret double %trunc
}
; Check the next doubleword up, which requires separate address logic.
; Other sequences besides this one would be OK.
define double @f6(i64 %src) {
; CHECK-LABEL: f6:
; CHECK: lay %r1, 524280(%r2)
; CHECK: ld %f0, 0(%r1)
; CHECK: ld %f2, 8(%r1)
; CHECK: br %r14
%add = add i64 %src, 524280
%ptr = inttoptr i64 %add to fp128 *
%val = load fp128, fp128 *%ptr
%trunc = fptrunc fp128 %val to double
ret double %trunc
}
; Check the highest aligned negative offset, which needs a combination of
; LDY and LD.
define double @f7(i64 %src) {
; CHECK-LABEL: f7:
; CHECK: ldy %f0, -8(%r2)
; CHECK: ld %f2, 0(%r2)
; CHECK: br %r14
%add = add i64 %src, -8
%ptr = inttoptr i64 %add to fp128 *
%val = load fp128, fp128 *%ptr
%trunc = fptrunc fp128 %val to double
ret double %trunc
}
; Check the next doubleword down, which requires LDY for both halves.
define double @f8(i64 %src) {
; CHECK-LABEL: f8:
; CHECK: ldy %f0, -16(%r2)
; CHECK: ldy %f2, -8(%r2)
; CHECK: br %r14
%add = add i64 %src, -16
%ptr = inttoptr i64 %add to fp128 *
%val = load fp128, fp128 *%ptr
%trunc = fptrunc fp128 %val to double
ret double %trunc
}
; Check the lowest offset that allows LDY for both halves.
define double @f9(i64 %src) {
; CHECK-LABEL: f9:
; CHECK: ldy %f0, -524288(%r2)
; CHECK: ldy %f2, -524280(%r2)
; CHECK: br %r14
%add = add i64 %src, -524288
%ptr = inttoptr i64 %add to fp128 *
%val = load fp128, fp128 *%ptr
%trunc = fptrunc fp128 %val to double
ret double %trunc
}
; Check the next doubleword down, which requires separate address logic.
; Other sequences besides this one would be OK.
define double @f10(i64 %src) {
; CHECK-LABEL: f10:
; CHECK: agfi %r2, -524296
; CHECK: ld %f0, 0(%r2)
; CHECK: ld %f2, 8(%r2)
; CHECK: br %r14
%add = add i64 %src, -524296
%ptr = inttoptr i64 %add to fp128 *
%val = load fp128, fp128 *%ptr
%trunc = fptrunc fp128 %val to double
ret double %trunc
}
; Check that indices are allowed.
define double @f11(i64 %src, i64 %index) {
; CHECK-LABEL: f11:
; CHECK: ld %f0, 4088({{%r2,%r3|%r3,%r2}})
; CHECK: ldy %f2, 4096({{%r2,%r3|%r3,%r2}})
; CHECK: br %r14
%add1 = add i64 %src, %index
%add2 = add i64 %add1, 4088
%ptr = inttoptr i64 %add2 to fp128 *
%val = load fp128, fp128 *%ptr
%trunc = fptrunc fp128 %val to double
ret double %trunc
}
|