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
|
; Test that the case of (64 - shift) used by a shift/rotate instruction is
; implemented with an lcr. This should also work for any multiple of 64.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 | FileCheck %s
define i64 @f1(i64 %in, i64 %sh) {
; CHECK-LABEL: f1:
; CHECK: lcr %r1, %r3
; CHECK: sllg %r2, %r2, 0(%r1)
%sub = sub i64 64, %sh
%shl = shl i64 %in, %sub
ret i64 %shl
}
define i64 @f2(i64 %in, i64 %sh) {
; CHECK-LABEL: f2:
; CHECK: lcr %r1, %r3
; CHECK: srag %r2, %r2, 0(%r1)
%sub = sub i64 64, %sh
%shl = ashr i64 %in, %sub
ret i64 %shl
}
define i64 @f3(i64 %in, i64 %sh) {
; CHECK-LABEL: f3:
; CHECK: lcr %r1, %r3
; CHECK: srlg %r2, %r2, 0(%r1)
%sub = sub i64 64, %sh
%shl = lshr i64 %in, %sub
ret i64 %shl
}
define i64 @f4(i64 %in, i64 %sh) {
; CHECK-LABEL: f4:
; CHECK: lcr %r1, %r3
; CHECK: rllg %r2, %r2, 0(%r1)
%shr = lshr i64 %in, %sh
%sub = sub i64 64, %sh
%shl = shl i64 %in, %sub
%or = or i64 %shl, %shr
ret i64 %or
}
define i64 @f5(i64 %in, i64 %sh) {
; CHECK-LABEL: f5:
; CHECK: lcr %r1, %r3
; CHECK: sllg %r2, %r2, 0(%r1)
%sub = sub i64 128, %sh
%shl = shl i64 %in, %sub
ret i64 %shl
}
define i64 @f6(i64 %in, i64 %sh) {
; CHECK-LABEL: f6:
; CHECK: lcr %r1, %r3
; CHECK: srag %r2, %r2, 0(%r1)
%sub = sub i64 256, %sh
%shl = ashr i64 %in, %sub
ret i64 %shl
}
define i64 @f7(i64 %in, i64 %sh) {
; CHECK-LABEL: f7:
; CHECK: lcr %r1, %r3
; CHECK: srlg %r2, %r2, 0(%r1)
%sub = sub i64 512, %sh
%shl = lshr i64 %in, %sub
ret i64 %shl
}
define i64 @f8(i64 %in, i64 %sh) {
; CHECK-LABEL: f8:
; CHECK: lcr %r1, %r3
; CHECK: srlg %r0, %r2, 0(%r3)
; CHECK: sllg %r2, %r2, 0(%r1)
; CHECK: ogr %r2, %r0
%shr = lshr i64 %in, %sh
%sub = sub i64 1024, %sh
%shl = shl i64 %in, %sub
%or = or i64 %shl, %shr
ret i64 %or
}
|
