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
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
; Test 32-bit unsigned comparison in which the second operand is a variable.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
; Check register comparison.
define double @f1(double %a, double %b, i32 %i1, i32 %i2) {
; CHECK-LABEL: f1:
; CHECK: clrjl %r2, %r3
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%cond = icmp ult i32 %i1, %i2
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the low end of the CL range.
define double @f2(double %a, double %b, i32 %i1, i32 *%ptr) {
; CHECK-LABEL: f2:
; CHECK: cl %r2, 0(%r3)
; CHECK-NEXT: jl
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%i2 = load i32 , i32 *%ptr
%cond = icmp ult i32 %i1, %i2
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the high end of the aligned CL range.
define double @f3(double %a, double %b, i32 %i1, i32 *%base) {
; CHECK-LABEL: f3:
; CHECK: cl %r2, 4092(%r3)
; CHECK-NEXT: jl
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%ptr = getelementptr i32, i32 *%base, i64 1023
%i2 = load i32 , i32 *%ptr
%cond = icmp ult i32 %i1, %i2
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the next word up, which should use CLY instead of CL.
define double @f4(double %a, double %b, i32 %i1, i32 *%base) {
; CHECK-LABEL: f4:
; CHECK: cly %r2, 4096(%r3)
; CHECK-NEXT: jl
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%ptr = getelementptr i32, i32 *%base, i64 1024
%i2 = load i32 , i32 *%ptr
%cond = icmp ult i32 %i1, %i2
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the high end of the aligned CLY range.
define double @f5(double %a, double %b, i32 %i1, i32 *%base) {
; CHECK-LABEL: f5:
; CHECK: cly %r2, 524284(%r3)
; CHECK-NEXT: jl
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%ptr = getelementptr i32, i32 *%base, i64 131071
%i2 = load i32 , i32 *%ptr
%cond = icmp ult i32 %i1, %i2
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the next word up, which needs separate address logic.
; Other sequences besides this one would be OK.
define double @f6(double %a, double %b, i32 %i1, i32 *%base) {
; CHECK-LABEL: f6:
; CHECK: agfi %r3, 524288
; CHECK: cl %r2, 0(%r3)
; CHECK-NEXT: jl
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%ptr = getelementptr i32, i32 *%base, i64 131072
%i2 = load i32 , i32 *%ptr
%cond = icmp ult i32 %i1, %i2
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the high end of the negative aligned CLY range.
define double @f7(double %a, double %b, i32 %i1, i32 *%base) {
; CHECK-LABEL: f7:
; CHECK: cly %r2, -4(%r3)
; CHECK-NEXT: jl
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%ptr = getelementptr i32, i32 *%base, i64 -1
%i2 = load i32 , i32 *%ptr
%cond = icmp ult i32 %i1, %i2
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the low end of the CLY range.
define double @f8(double %a, double %b, i32 %i1, i32 *%base) {
; CHECK-LABEL: f8:
; CHECK: cly %r2, -524288(%r3)
; CHECK-NEXT: jl
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%ptr = getelementptr i32, i32 *%base, i64 -131072
%i2 = load i32 , i32 *%ptr
%cond = icmp ult i32 %i1, %i2
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the next word down, which needs separate address logic.
; Other sequences besides this one would be OK.
define double @f9(double %a, double %b, i32 %i1, i32 *%base) {
; CHECK-LABEL: f9:
; CHECK: agfi %r3, -524292
; CHECK: cl %r2, 0(%r3)
; CHECK-NEXT: jl
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%ptr = getelementptr i32, i32 *%base, i64 -131073
%i2 = load i32 , i32 *%ptr
%cond = icmp ult i32 %i1, %i2
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check that CL allows an index.
define double @f10(double %a, double %b, i32 %i1, i64 %base, i64 %index) {
; CHECK-LABEL: f10:
; CHECK: cl %r2, 4092({{%r4,%r3|%r3,%r4}})
; CHECK-NEXT: jl
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%add1 = add i64 %base, %index
%add2 = add i64 %add1, 4092
%ptr = inttoptr i64 %add2 to i32 *
%i2 = load i32 , i32 *%ptr
%cond = icmp ult i32 %i1, %i2
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check that CLY allows an index.
define double @f11(double %a, double %b, i32 %i1, i64 %base, i64 %index) {
; CHECK-LABEL: f11:
; CHECK: cly %r2, 4096({{%r4,%r3|%r3,%r4}})
; CHECK-NEXT: jl
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%add1 = add i64 %base, %index
%add2 = add i64 %add1, 4096
%ptr = inttoptr i64 %add2 to i32 *
%i2 = load i32 , i32 *%ptr
%cond = icmp ult i32 %i1, %i2
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the comparison can be reversed if that allows CL to be used.
define double @f12(double %a, double %b, i32 %i2, i32 *%ptr) {
; CHECK-LABEL: f12:
; CHECK: cl %r2, 0(%r3)
; CHECK-NEXT: jh {{\.L.*}}
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%i1 = load i32 , i32 *%ptr
%cond = icmp ult i32 %i1, %i2
%res = select i1 %cond, double %a, double %b
ret double %res
}
|
