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
|
; Test extensions of f32 to f128.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
; Check register extension.
define void @f1(fp128 *%dst, float %val) {
; CHECK: f1:
; CHECK: lxebr %f0, %f0
; CHECK: std %f0, 0(%r2)
; CHECK: std %f2, 8(%r2)
; CHECK: br %r14
%res = fpext float %val to fp128
store fp128 %res, fp128 *%dst
ret void
}
; Check the low end of the LXEB range.
define void @f2(fp128 *%dst, float *%ptr) {
; CHECK: f2:
; CHECK: lxeb %f0, 0(%r3)
; CHECK: std %f0, 0(%r2)
; CHECK: std %f2, 8(%r2)
; CHECK: br %r14
%val = load float *%ptr
%res = fpext float %val to fp128
store fp128 %res, fp128 *%dst
ret void
}
; Check the high end of the aligned LXEB range.
define void @f3(fp128 *%dst, float *%base) {
; CHECK: f3:
; CHECK: lxeb %f0, 4092(%r3)
; CHECK: std %f0, 0(%r2)
; CHECK: std %f2, 8(%r2)
; CHECK: br %r14
%ptr = getelementptr float *%base, i64 1023
%val = load float *%ptr
%res = fpext float %val to fp128
store fp128 %res, fp128 *%dst
ret void
}
; Check the next word up, which needs separate address logic.
; Other sequences besides this one would be OK.
define void @f4(fp128 *%dst, float *%base) {
; CHECK: f4:
; CHECK: aghi %r3, 4096
; CHECK: lxeb %f0, 0(%r3)
; CHECK: std %f0, 0(%r2)
; CHECK: std %f2, 8(%r2)
; CHECK: br %r14
%ptr = getelementptr float *%base, i64 1024
%val = load float *%ptr
%res = fpext float %val to fp128
store fp128 %res, fp128 *%dst
ret void
}
; Check negative displacements, which also need separate address logic.
define void @f5(fp128 *%dst, float *%base) {
; CHECK: f5:
; CHECK: aghi %r3, -4
; CHECK: lxeb %f0, 0(%r3)
; CHECK: std %f0, 0(%r2)
; CHECK: std %f2, 8(%r2)
; CHECK: br %r14
%ptr = getelementptr float *%base, i64 -1
%val = load float *%ptr
%res = fpext float %val to fp128
store fp128 %res, fp128 *%dst
ret void
}
; Check that LXEB allows indices.
define void @f6(fp128 *%dst, float *%base, i64 %index) {
; CHECK: f6:
; CHECK: sllg %r1, %r4, 2
; CHECK: lxeb %f0, 400(%r1,%r3)
; CHECK: std %f0, 0(%r2)
; CHECK: std %f2, 8(%r2)
; CHECK: br %r14
%ptr1 = getelementptr float *%base, i64 %index
%ptr2 = getelementptr float *%ptr1, i64 100
%val = load float *%ptr2
%res = fpext float %val to fp128
store fp128 %res, fp128 *%dst
ret void
}
|
