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
|
; addr-01.ll in which the address is also used in a non-address context.
; The assumption here is that we should match complex addresses where
; possible, but this might well need to change in future.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
; A simple index address.
define void @f1(i64 %addr, i64 %index, i8 **%dst) {
; CHECK-LABEL: f1:
; CHECK: lb %r0, 0(%r3,%r2)
; CHECK: br %r14
%add = add i64 %addr, %index
%ptr = inttoptr i64 %add to i8 *
%a = load volatile i8, i8 *%ptr
store volatile i8 *%ptr, i8 **%dst
ret void
}
; An address with an index and a displacement (order 1).
define void @f2(i64 %addr, i64 %index, i8 **%dst) {
; CHECK-LABEL: f2:
; CHECK: lb %r0, 100(%r3,%r2)
; CHECK: br %r14
%add1 = add i64 %addr, %index
%add2 = add i64 %add1, 100
%ptr = inttoptr i64 %add2 to i8 *
%a = load volatile i8, i8 *%ptr
store volatile i8 *%ptr, i8 **%dst
ret void
}
; An address with an index and a displacement (order 2).
define void @f3(i64 %addr, i64 %index, i8 **%dst) {
; CHECK-LABEL: f3:
; CHECK: lb %r0, 100(%r3,%r2)
; CHECK: br %r14
%add1 = add i64 %addr, 100
%add2 = add i64 %add1, %index
%ptr = inttoptr i64 %add2 to i8 *
%a = load volatile i8, i8 *%ptr
store volatile i8 *%ptr, i8 **%dst
ret void
}
; An address with an index and a subtracted displacement (order 1).
define void @f4(i64 %addr, i64 %index, i8 **%dst) {
; CHECK-LABEL: f4:
; CHECK: lb %r0, -100(%r3,%r2)
; CHECK: br %r14
%add1 = add i64 %addr, %index
%add2 = sub i64 %add1, 100
%ptr = inttoptr i64 %add2 to i8 *
%a = load volatile i8, i8 *%ptr
store volatile i8 *%ptr, i8 **%dst
ret void
}
; An address with an index and a subtracted displacement (order 2).
define void @f5(i64 %addr, i64 %index, i8 **%dst) {
; CHECK-LABEL: f5:
; CHECK: lb %r0, -100(%r3,%r2)
; CHECK: br %r14
%add1 = sub i64 %addr, 100
%add2 = add i64 %add1, %index
%ptr = inttoptr i64 %add2 to i8 *
%a = load volatile i8, i8 *%ptr
store volatile i8 *%ptr, i8 **%dst
ret void
}
; An address with an index and a displacement added using OR.
define void @f6(i64 %addr, i64 %index, i8 **%dst) {
; CHECK-LABEL: f6:
; CHECK: nill %r2, 65528
; CHECK: lb %r0, 6(%r3,%r2)
; CHECK: br %r14
%aligned = and i64 %addr, -8
%or = or i64 %aligned, 6
%add = add i64 %or, %index
%ptr = inttoptr i64 %add to i8 *
%a = load volatile i8, i8 *%ptr
store volatile i8 *%ptr, i8 **%dst
ret void
}
; Like f6, but without the masking. This OR doesn't count as a displacement.
define void @f7(i64 %addr, i64 %index, i8 **%dst) {
; CHECK-LABEL: f7:
; CHECK: oill %r2, 6
; CHECK: lb %r0, 0(%r3,%r2)
; CHECK: br %r14
%or = or i64 %addr, 6
%add = add i64 %or, %index
%ptr = inttoptr i64 %add to i8 *
%a = load volatile i8, i8 *%ptr
store volatile i8 *%ptr, i8 **%dst
ret void
}
; Like f6, but with the OR applied after the index. We don't know anything
; about the alignment of %add here.
define void @f8(i64 %addr, i64 %index, i8 **%dst) {
; CHECK-LABEL: f8:
; CHECK: nill %r2, 65528
; CHECK: agr %r2, %r3
; CHECK: oill %r2, 6
; CHECK: lb %r0, 0(%r2)
; CHECK: br %r14
%aligned = and i64 %addr, -8
%add = add i64 %aligned, %index
%or = or i64 %add, 6
%ptr = inttoptr i64 %or to i8 *
%a = load volatile i8, i8 *%ptr
store volatile i8 *%ptr, i8 **%dst
ret void
}
|
