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
|
; Test 64-bit signed comparison in which the second operand is a variable.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
; Check CGR.
define double @f1(double %a, double %b, i64 %i1, i64 %i2) {
; CHECK-LABEL: f1:
; CHECK: cgrjl %r2, %r3
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%cond = icmp slt i64 %i1, %i2
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check CG with no displacement.
define double @f2(double %a, double %b, i64 %i1, i64 *%ptr) {
; CHECK-LABEL: f2:
; CHECK: cg %r2, 0(%r3)
; CHECK-NEXT: jl
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%i2 = load i64 *%ptr
%cond = icmp slt i64 %i1, %i2
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the high end of the aligned CG range.
define double @f3(double %a, double %b, i64 %i1, i64 *%base) {
; CHECK-LABEL: f3:
; CHECK: cg %r2, 524280(%r3)
; CHECK-NEXT: jl
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%ptr = getelementptr i64 *%base, i64 65535
%i2 = load i64 *%ptr
%cond = icmp slt i64 %i1, %i2
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the next doubleword up, which needs separate address logic.
; Other sequences besides this one would be OK.
define double @f4(double %a, double %b, i64 %i1, i64 *%base) {
; CHECK-LABEL: f4:
; CHECK: agfi %r3, 524288
; CHECK: cg %r2, 0(%r3)
; CHECK-NEXT: jl
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%ptr = getelementptr i64 *%base, i64 65536
%i2 = load i64 *%ptr
%cond = icmp slt i64 %i1, %i2
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the high end of the negative aligned CG range.
define double @f5(double %a, double %b, i64 %i1, i64 *%base) {
; CHECK-LABEL: f5:
; CHECK: cg %r2, -8(%r3)
; CHECK-NEXT: jl
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%ptr = getelementptr i64 *%base, i64 -1
%i2 = load i64 *%ptr
%cond = icmp slt i64 %i1, %i2
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the low end of the CG range.
define double @f6(double %a, double %b, i64 %i1, i64 *%base) {
; CHECK-LABEL: f6:
; CHECK: cg %r2, -524288(%r3)
; CHECK-NEXT: jl
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%ptr = getelementptr i64 *%base, i64 -65536
%i2 = load i64 *%ptr
%cond = icmp slt i64 %i1, %i2
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the next doubleword down, which needs separate address logic.
; Other sequences besides this one would be OK.
define double @f7(double %a, double %b, i64 %i1, i64 *%base) {
; CHECK-LABEL: f7:
; CHECK: agfi %r3, -524296
; CHECK: cg %r2, 0(%r3)
; CHECK-NEXT: jl
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%ptr = getelementptr i64 *%base, i64 -65537
%i2 = load i64 *%ptr
%cond = icmp slt i64 %i1, %i2
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check that CG allows an index.
define double @f8(double %a, double %b, i64 %i1, i64 %base, i64 %index) {
; CHECK-LABEL: f8:
; CHECK: cg %r2, 524280({{%r4,%r3|%r3,%r4}})
; CHECK-NEXT: jl
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%add1 = add i64 %base, %index
%add2 = add i64 %add1, 524280
%ptr = inttoptr i64 %add2 to i64 *
%i2 = load i64 *%ptr
%cond = icmp slt i64 %i1, %i2
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the comparison can be reversed if that allows CG to be used.
define double @f9(double %a, double %b, i64 %i2, i64 *%ptr) {
; CHECK-LABEL: f9:
; CHECK: cg %r2, 0(%r3)
; CHECK-NEXT: jh {{\.L.*}}
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%i1 = load i64 *%ptr
%cond = icmp slt i64 %i1, %i2
%res = select i1 %cond, double %a, double %b
ret double %res
}
|
