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
|
; Test 32-bit square root.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
declare float @llvm.sqrt.f32(float)
declare float @sqrtf(float)
; Check register square root.
define float @f1(float %val) {
; CHECK-LABEL: f1:
; CHECK: sqebr %f0, %f0
; CHECK: br %r14
%res = call float @llvm.sqrt.f32(float %val)
ret float %res
}
; Check the low end of the SQEB range.
define float @f2(float *%ptr) {
; CHECK-LABEL: f2:
; CHECK: sqeb %f0, 0(%r2)
; CHECK: br %r14
%val = load float *%ptr
%res = call float @llvm.sqrt.f32(float %val)
ret float %res
}
; Check the high end of the aligned SQEB range.
define float @f3(float *%base) {
; CHECK-LABEL: f3:
; CHECK: sqeb %f0, 4092(%r2)
; CHECK: br %r14
%ptr = getelementptr float *%base, i64 1023
%val = load float *%ptr
%res = call float @llvm.sqrt.f32(float %val)
ret float %res
}
; Check the next word up, which needs separate address logic.
; Other sequences besides this one would be OK.
define float @f4(float *%base) {
; CHECK-LABEL: f4:
; CHECK: aghi %r2, 4096
; CHECK: sqeb %f0, 0(%r2)
; CHECK: br %r14
%ptr = getelementptr float *%base, i64 1024
%val = load float *%ptr
%res = call float @llvm.sqrt.f32(float %val)
ret float %res
}
; Check negative displacements, which also need separate address logic.
define float @f5(float *%base) {
; CHECK-LABEL: f5:
; CHECK: aghi %r2, -4
; CHECK: sqeb %f0, 0(%r2)
; CHECK: br %r14
%ptr = getelementptr float *%base, i64 -1
%val = load float *%ptr
%res = call float @llvm.sqrt.f32(float %val)
ret float %res
}
; Check that SQEB allows indices.
define float @f6(float *%base, i64 %index) {
; CHECK-LABEL: f6:
; CHECK: sllg %r1, %r3, 2
; CHECK: sqeb %f0, 400(%r1,%r2)
; CHECK: br %r14
%ptr1 = getelementptr float *%base, i64 %index
%ptr2 = getelementptr float *%ptr1, i64 100
%val = load float *%ptr2
%res = call float @llvm.sqrt.f32(float %val)
ret float %res
}
; Test a case where we spill the source of at least one SQEBR. We want
; to use SQEB if possible.
define void @f7(float *%ptr) {
; CHECK-LABEL: f7:
; CHECK: sqeb {{%f[0-9]+}}, 16{{[04]}}(%r15)
; CHECK: br %r14
%val0 = load volatile float *%ptr
%val1 = load volatile float *%ptr
%val2 = load volatile float *%ptr
%val3 = load volatile float *%ptr
%val4 = load volatile float *%ptr
%val5 = load volatile float *%ptr
%val6 = load volatile float *%ptr
%val7 = load volatile float *%ptr
%val8 = load volatile float *%ptr
%val9 = load volatile float *%ptr
%val10 = load volatile float *%ptr
%val11 = load volatile float *%ptr
%val12 = load volatile float *%ptr
%val13 = load volatile float *%ptr
%val14 = load volatile float *%ptr
%val15 = load volatile float *%ptr
%val16 = load volatile float *%ptr
%sqrt0 = call float @llvm.sqrt.f32(float %val0)
%sqrt1 = call float @llvm.sqrt.f32(float %val1)
%sqrt2 = call float @llvm.sqrt.f32(float %val2)
%sqrt3 = call float @llvm.sqrt.f32(float %val3)
%sqrt4 = call float @llvm.sqrt.f32(float %val4)
%sqrt5 = call float @llvm.sqrt.f32(float %val5)
%sqrt6 = call float @llvm.sqrt.f32(float %val6)
%sqrt7 = call float @llvm.sqrt.f32(float %val7)
%sqrt8 = call float @llvm.sqrt.f32(float %val8)
%sqrt9 = call float @llvm.sqrt.f32(float %val9)
%sqrt10 = call float @llvm.sqrt.f32(float %val10)
%sqrt11 = call float @llvm.sqrt.f32(float %val11)
%sqrt12 = call float @llvm.sqrt.f32(float %val12)
%sqrt13 = call float @llvm.sqrt.f32(float %val13)
%sqrt14 = call float @llvm.sqrt.f32(float %val14)
%sqrt15 = call float @llvm.sqrt.f32(float %val15)
%sqrt16 = call float @llvm.sqrt.f32(float %val16)
store volatile float %val0, float *%ptr
store volatile float %val1, float *%ptr
store volatile float %val2, float *%ptr
store volatile float %val3, float *%ptr
store volatile float %val4, float *%ptr
store volatile float %val5, float *%ptr
store volatile float %val6, float *%ptr
store volatile float %val7, float *%ptr
store volatile float %val8, float *%ptr
store volatile float %val9, float *%ptr
store volatile float %val10, float *%ptr
store volatile float %val11, float *%ptr
store volatile float %val12, float *%ptr
store volatile float %val13, float *%ptr
store volatile float %val14, float *%ptr
store volatile float %val15, float *%ptr
store volatile float %val16, float *%ptr
store volatile float %sqrt0, float *%ptr
store volatile float %sqrt1, float *%ptr
store volatile float %sqrt2, float *%ptr
store volatile float %sqrt3, float *%ptr
store volatile float %sqrt4, float *%ptr
store volatile float %sqrt5, float *%ptr
store volatile float %sqrt6, float *%ptr
store volatile float %sqrt7, float *%ptr
store volatile float %sqrt8, float *%ptr
store volatile float %sqrt9, float *%ptr
store volatile float %sqrt10, float *%ptr
store volatile float %sqrt11, float *%ptr
store volatile float %sqrt12, float *%ptr
store volatile float %sqrt13, float *%ptr
store volatile float %sqrt14, float *%ptr
store volatile float %sqrt15, float *%ptr
store volatile float %sqrt16, float *%ptr
ret void
}
; Check that a call to the normal sqrtf function is lowered.
define float @f8(float %dummy, float %val) {
; CHECK-LABEL: f8:
; CHECK: sqebr %f0, %f2
; CHECK: cebr %f0, %f0
; CHECK: jo [[LABEL:\.L.*]]
; CHECK: br %r14
; CHECK: [[LABEL]]:
; CHECK: ler %f0, %f2
; CHECK: jg sqrtf@PLT
%res = tail call float @sqrtf(float %val)
ret float %res
}
|
