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
175
176
177
178
179
180
181
182
183
184
185
186
187
|
; Like frame-02.ll, but with long doubles rather than floats. Some of the
; cases are slightly different because we need to allocate pairs of FPRs.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
; This function should require all FPRs, but no other spill slots.
; We need to save and restore 8 of the 16 FPRs, so the frame size
; should be exactly 8 * 8 = 64. The CFA offset is 160
; (the caller-allocated part of the frame) + 64.
define void @f1(fp128 *%ptr) {
; CHECK-LABEL: f1:
; CHECK: aghi %r15, -64
; CHECK: .cfi_def_cfa_offset 224
; CHECK: std %f8, 56(%r15)
; CHECK: std %f9, 48(%r15)
; CHECK: std %f10, 40(%r15)
; CHECK: std %f11, 32(%r15)
; CHECK: std %f12, 24(%r15)
; CHECK: std %f13, 16(%r15)
; CHECK: std %f14, 8(%r15)
; CHECK: std %f15, 0(%r15)
; CHECK: .cfi_offset %f8, -168
; CHECK: .cfi_offset %f9, -176
; CHECK: .cfi_offset %f10, -184
; CHECK: .cfi_offset %f11, -192
; CHECK: .cfi_offset %f12, -200
; CHECK: .cfi_offset %f13, -208
; CHECK: .cfi_offset %f14, -216
; CHECK: .cfi_offset %f15, -224
; ...main function body...
; CHECK: ld %f8, 56(%r15)
; CHECK: ld %f9, 48(%r15)
; CHECK: ld %f10, 40(%r15)
; CHECK: ld %f11, 32(%r15)
; CHECK: ld %f12, 24(%r15)
; CHECK: ld %f13, 16(%r15)
; CHECK: ld %f14, 8(%r15)
; CHECK: ld %f15, 0(%r15)
; CHECK: aghi %r15, 64
; CHECK: br %r14
%l0 = load volatile fp128, fp128 *%ptr
%l1 = load volatile fp128, fp128 *%ptr
%l4 = load volatile fp128, fp128 *%ptr
%l5 = load volatile fp128, fp128 *%ptr
%l8 = load volatile fp128, fp128 *%ptr
%l9 = load volatile fp128, fp128 *%ptr
%l12 = load volatile fp128, fp128 *%ptr
%l13 = load volatile fp128, fp128 *%ptr
%add0 = fadd fp128 %l0, %l0
%add1 = fadd fp128 %l1, %add0
%add4 = fadd fp128 %l4, %add1
%add5 = fadd fp128 %l5, %add4
%add8 = fadd fp128 %l8, %add5
%add9 = fadd fp128 %l9, %add8
%add12 = fadd fp128 %l12, %add9
%add13 = fadd fp128 %l13, %add12
store volatile fp128 %add0, fp128 *%ptr
store volatile fp128 %add1, fp128 *%ptr
store volatile fp128 %add4, fp128 *%ptr
store volatile fp128 %add5, fp128 *%ptr
store volatile fp128 %add8, fp128 *%ptr
store volatile fp128 %add9, fp128 *%ptr
store volatile fp128 %add12, fp128 *%ptr
store volatile fp128 %add13, fp128 *%ptr
ret void
}
; Like f1, but requires one fewer FPR pair. We allocate in numerical order,
; so %f13+%f15 is the pair that gets dropped.
define void @f2(fp128 *%ptr) {
; CHECK-LABEL: f2:
; CHECK: aghi %r15, -48
; CHECK: .cfi_def_cfa_offset 208
; CHECK: std %f8, 40(%r15)
; CHECK: std %f9, 32(%r15)
; CHECK: std %f10, 24(%r15)
; CHECK: std %f11, 16(%r15)
; CHECK: std %f12, 8(%r15)
; CHECK: std %f14, 0(%r15)
; CHECK: .cfi_offset %f8, -168
; CHECK: .cfi_offset %f9, -176
; CHECK: .cfi_offset %f10, -184
; CHECK: .cfi_offset %f11, -192
; CHECK: .cfi_offset %f12, -200
; CHECK: .cfi_offset %f14, -208
; CHECK-NOT: %f13
; CHECK-NOT: %f15
; ...main function body...
; CHECK: ld %f8, 40(%r15)
; CHECK: ld %f9, 32(%r15)
; CHECK: ld %f10, 24(%r15)
; CHECK: ld %f11, 16(%r15)
; CHECK: ld %f12, 8(%r15)
; CHECK: ld %f14, 0(%r15)
; CHECK: aghi %r15, 48
; CHECK: br %r14
%l0 = load volatile fp128, fp128 *%ptr
%l1 = load volatile fp128, fp128 *%ptr
%l4 = load volatile fp128, fp128 *%ptr
%l5 = load volatile fp128, fp128 *%ptr
%l8 = load volatile fp128, fp128 *%ptr
%l9 = load volatile fp128, fp128 *%ptr
%l12 = load volatile fp128, fp128 *%ptr
%add0 = fadd fp128 %l0, %l0
%add1 = fadd fp128 %l1, %add0
%add4 = fadd fp128 %l4, %add1
%add5 = fadd fp128 %l5, %add4
%add8 = fadd fp128 %l8, %add5
%add9 = fadd fp128 %l9, %add8
%add12 = fadd fp128 %l12, %add9
store volatile fp128 %add0, fp128 *%ptr
store volatile fp128 %add1, fp128 *%ptr
store volatile fp128 %add4, fp128 *%ptr
store volatile fp128 %add5, fp128 *%ptr
store volatile fp128 %add8, fp128 *%ptr
store volatile fp128 %add9, fp128 *%ptr
store volatile fp128 %add12, fp128 *%ptr
ret void
}
; Like f1, but requires only one call-saved FPR pair. We allocate in
; numerical order so the pair should be %f8+%f10.
define void @f3(fp128 *%ptr) {
; CHECK-LABEL: f3:
; CHECK: aghi %r15, -16
; CHECK: .cfi_def_cfa_offset 176
; CHECK: std %f8, 8(%r15)
; CHECK: std %f10, 0(%r15)
; CHECK: .cfi_offset %f8, -168
; CHECK: .cfi_offset %f10, -176
; CHECK-NOT: %f9
; CHECK-NOT: %f11
; CHECK-NOT: %f12
; CHECK-NOT: %f13
; CHECK-NOT: %f14
; CHECK-NOT: %f15
; ...main function body...
; CHECK: ld %f8, 8(%r15)
; CHECK: ld %f10, 0(%r15)
; CHECK: aghi %r15, 16
; CHECK: br %r14
%l0 = load volatile fp128, fp128 *%ptr
%l1 = load volatile fp128, fp128 *%ptr
%l4 = load volatile fp128, fp128 *%ptr
%l5 = load volatile fp128, fp128 *%ptr
%l8 = load volatile fp128, fp128 *%ptr
%add0 = fadd fp128 %l0, %l0
%add1 = fadd fp128 %l1, %add0
%add4 = fadd fp128 %l4, %add1
%add5 = fadd fp128 %l5, %add4
%add8 = fadd fp128 %l8, %add5
store volatile fp128 %add0, fp128 *%ptr
store volatile fp128 %add1, fp128 *%ptr
store volatile fp128 %add4, fp128 *%ptr
store volatile fp128 %add5, fp128 *%ptr
store volatile fp128 %add8, fp128 *%ptr
ret void
}
; This function should use all call-clobbered FPRs but no call-saved ones.
; It shouldn't need to create a frame.
define void @f4(fp128 *%ptr) {
; CHECK-LABEL: f4:
; CHECK-NOT: %r15
; CHECK-NOT: %f8
; CHECK-NOT: %f9
; CHECK-NOT: %f10
; CHECK-NOT: %f11
; CHECK-NOT: %f12
; CHECK-NOT: %f13
; CHECK-NOT: %f14
; CHECK-NOT: %f15
; CHECK: br %r14
%l0 = load volatile fp128, fp128 *%ptr
%l1 = load volatile fp128, fp128 *%ptr
%l4 = load volatile fp128, fp128 *%ptr
%l5 = load volatile fp128, fp128 *%ptr
%add0 = fadd fp128 %l0, %l0
%add1 = fadd fp128 %l1, %add0
%add4 = fadd fp128 %l4, %add1
%add5 = fadd fp128 %l5, %add4
store volatile fp128 %add0, fp128 *%ptr
store volatile fp128 %add1, fp128 *%ptr
store volatile fp128 %add4, fp128 *%ptr
store volatile fp128 %add5, fp128 *%ptr
ret void
}
|
