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
|
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=i686-pc-linux-gnu | FileCheck %s -check-prefix=DEFAULT
; RUN: llc < %s -mtriple=i686-pc-linux-gnu -x86-experimental-pref-innermost-loop-alignment=5 | FileCheck %s -check-prefix=ALIGN32
; RUN: llc < %s -mtriple=i686-pc-linux-gnu -align-loops=32 -x86-experimental-pref-innermost-loop-alignment=6 | FileCheck %s -check-prefix=ALIGN64
declare void @foo()
define void @test(i32 %n, i32 %m) {
; DEFAULT-LABEL: test:
; DEFAULT: # %bb.0: # %entry
; DEFAULT-NEXT: pushl %ebp
; DEFAULT-NEXT: .cfi_def_cfa_offset 8
; DEFAULT-NEXT: pushl %ebx
; DEFAULT-NEXT: .cfi_def_cfa_offset 12
; DEFAULT-NEXT: pushl %edi
; DEFAULT-NEXT: .cfi_def_cfa_offset 16
; DEFAULT-NEXT: pushl %esi
; DEFAULT-NEXT: .cfi_def_cfa_offset 20
; DEFAULT-NEXT: subl $12, %esp
; DEFAULT-NEXT: .cfi_def_cfa_offset 32
; DEFAULT-NEXT: .cfi_offset %esi, -20
; DEFAULT-NEXT: .cfi_offset %edi, -16
; DEFAULT-NEXT: .cfi_offset %ebx, -12
; DEFAULT-NEXT: .cfi_offset %ebp, -8
; DEFAULT-NEXT: xorl %esi, %esi
; DEFAULT-NEXT: movl {{[0-9]+}}(%esp), %edi
; DEFAULT-NEXT: movl {{[0-9]+}}(%esp), %ebx
; DEFAULT-NEXT: .p2align 4, 0x90
; DEFAULT-NEXT: .LBB0_1: # %outer
; DEFAULT-NEXT: # =>This Loop Header: Depth=1
; DEFAULT-NEXT: # Child Loop BB0_2 Depth 2
; DEFAULT-NEXT: movl %edi, %ebp
; DEFAULT-NEXT: .p2align 4, 0x90
; DEFAULT-NEXT: .LBB0_2: # %inner
; DEFAULT-NEXT: # Parent Loop BB0_1 Depth=1
; DEFAULT-NEXT: # => This Inner Loop Header: Depth=2
; DEFAULT-NEXT: calll foo@PLT
; DEFAULT-NEXT: decl %ebp
; DEFAULT-NEXT: jne .LBB0_2
; DEFAULT-NEXT: # %bb.3: # %outer_bb
; DEFAULT-NEXT: # in Loop: Header=BB0_1 Depth=1
; DEFAULT-NEXT: incl %esi
; DEFAULT-NEXT: cmpl %ebx, %esi
; DEFAULT-NEXT: jne .LBB0_1
; DEFAULT-NEXT: # %bb.4: # %exit
; DEFAULT-NEXT: addl $12, %esp
; DEFAULT-NEXT: .cfi_def_cfa_offset 20
; DEFAULT-NEXT: popl %esi
; DEFAULT-NEXT: .cfi_def_cfa_offset 16
; DEFAULT-NEXT: popl %edi
; DEFAULT-NEXT: .cfi_def_cfa_offset 12
; DEFAULT-NEXT: popl %ebx
; DEFAULT-NEXT: .cfi_def_cfa_offset 8
; DEFAULT-NEXT: popl %ebp
; DEFAULT-NEXT: .cfi_def_cfa_offset 4
; DEFAULT-NEXT: retl
;
; ALIGN32-LABEL: test:
; ALIGN32: # %bb.0: # %entry
; ALIGN32-NEXT: pushl %ebp
; ALIGN32-NEXT: .cfi_def_cfa_offset 8
; ALIGN32-NEXT: pushl %ebx
; ALIGN32-NEXT: .cfi_def_cfa_offset 12
; ALIGN32-NEXT: pushl %edi
; ALIGN32-NEXT: .cfi_def_cfa_offset 16
; ALIGN32-NEXT: pushl %esi
; ALIGN32-NEXT: .cfi_def_cfa_offset 20
; ALIGN32-NEXT: subl $12, %esp
; ALIGN32-NEXT: .cfi_def_cfa_offset 32
; ALIGN32-NEXT: .cfi_offset %esi, -20
; ALIGN32-NEXT: .cfi_offset %edi, -16
; ALIGN32-NEXT: .cfi_offset %ebx, -12
; ALIGN32-NEXT: .cfi_offset %ebp, -8
; ALIGN32-NEXT: xorl %esi, %esi
; ALIGN32-NEXT: movl {{[0-9]+}}(%esp), %edi
; ALIGN32-NEXT: movl {{[0-9]+}}(%esp), %ebx
; ALIGN32-NEXT: .p2align 4, 0x90
; ALIGN32-NEXT: .LBB0_1: # %outer
; ALIGN32-NEXT: # =>This Loop Header: Depth=1
; ALIGN32-NEXT: # Child Loop BB0_2 Depth 2
; ALIGN32-NEXT: movl %edi, %ebp
; ALIGN32-NEXT: .p2align 5, 0x90
; ALIGN32-NEXT: .LBB0_2: # %inner
; ALIGN32-NEXT: # Parent Loop BB0_1 Depth=1
; ALIGN32-NEXT: # => This Inner Loop Header: Depth=2
; ALIGN32-NEXT: calll foo@PLT
; ALIGN32-NEXT: decl %ebp
; ALIGN32-NEXT: jne .LBB0_2
; ALIGN32-NEXT: # %bb.3: # %outer_bb
; ALIGN32-NEXT: # in Loop: Header=BB0_1 Depth=1
; ALIGN32-NEXT: incl %esi
; ALIGN32-NEXT: cmpl %ebx, %esi
; ALIGN32-NEXT: jne .LBB0_1
; ALIGN32-NEXT: # %bb.4: # %exit
; ALIGN32-NEXT: addl $12, %esp
; ALIGN32-NEXT: .cfi_def_cfa_offset 20
; ALIGN32-NEXT: popl %esi
; ALIGN32-NEXT: .cfi_def_cfa_offset 16
; ALIGN32-NEXT: popl %edi
; ALIGN32-NEXT: .cfi_def_cfa_offset 12
; ALIGN32-NEXT: popl %ebx
; ALIGN32-NEXT: .cfi_def_cfa_offset 8
; ALIGN32-NEXT: popl %ebp
; ALIGN32-NEXT: .cfi_def_cfa_offset 4
; ALIGN32-NEXT: retl
;
; ALIGN64-LABEL: test:
; ALIGN64: # %bb.0: # %entry
; ALIGN64-NEXT: pushl %ebp
; ALIGN64-NEXT: .cfi_def_cfa_offset 8
; ALIGN64-NEXT: pushl %ebx
; ALIGN64-NEXT: .cfi_def_cfa_offset 12
; ALIGN64-NEXT: pushl %edi
; ALIGN64-NEXT: .cfi_def_cfa_offset 16
; ALIGN64-NEXT: pushl %esi
; ALIGN64-NEXT: .cfi_def_cfa_offset 20
; ALIGN64-NEXT: subl $12, %esp
; ALIGN64-NEXT: .cfi_def_cfa_offset 32
; ALIGN64-NEXT: .cfi_offset %esi, -20
; ALIGN64-NEXT: .cfi_offset %edi, -16
; ALIGN64-NEXT: .cfi_offset %ebx, -12
; ALIGN64-NEXT: .cfi_offset %ebp, -8
; ALIGN64-NEXT: xorl %esi, %esi
; ALIGN64-NEXT: movl {{[0-9]+}}(%esp), %edi
; ALIGN64-NEXT: movl {{[0-9]+}}(%esp), %ebx
; ALIGN64-NEXT: .p2align 5, 0x90
; ALIGN64-NEXT: .LBB0_1: # %outer
; ALIGN64-NEXT: # =>This Loop Header: Depth=1
; ALIGN64-NEXT: # Child Loop BB0_2 Depth 2
; ALIGN64-NEXT: movl %edi, %ebp
; ALIGN64-NEXT: .p2align 6, 0x90
; ALIGN64-NEXT: .LBB0_2: # %inner
; ALIGN64-NEXT: # Parent Loop BB0_1 Depth=1
; ALIGN64-NEXT: # => This Inner Loop Header: Depth=2
; ALIGN64-NEXT: calll foo@PLT
; ALIGN64-NEXT: decl %ebp
; ALIGN64-NEXT: jne .LBB0_2
; ALIGN64-NEXT: # %bb.3: # %outer_bb
; ALIGN64-NEXT: # in Loop: Header=BB0_1 Depth=1
; ALIGN64-NEXT: incl %esi
; ALIGN64-NEXT: cmpl %ebx, %esi
; ALIGN64-NEXT: jne .LBB0_1
; ALIGN64-NEXT: # %bb.4: # %exit
; ALIGN64-NEXT: addl $12, %esp
; ALIGN64-NEXT: .cfi_def_cfa_offset 20
; ALIGN64-NEXT: popl %esi
; ALIGN64-NEXT: .cfi_def_cfa_offset 16
; ALIGN64-NEXT: popl %edi
; ALIGN64-NEXT: .cfi_def_cfa_offset 12
; ALIGN64-NEXT: popl %ebx
; ALIGN64-NEXT: .cfi_def_cfa_offset 8
; ALIGN64-NEXT: popl %ebp
; ALIGN64-NEXT: .cfi_def_cfa_offset 4
; ALIGN64-NEXT: retl
entry:
br label %outer
outer:
%outer.iv = phi i32 [0, %entry], [%outer.iv.next, %outer_bb]
br label %inner
inner:
%inner.iv = phi i32 [0, %outer], [%inner.iv.next, %inner]
call void @foo()
%inner.iv.next = add i32 %inner.iv, 1
%inner.cond = icmp ne i32 %inner.iv.next, %m
br i1 %inner.cond, label %inner, label %outer_bb
outer_bb:
%outer.iv.next = add i32 %outer.iv, 1
%outer.cond = icmp ne i32 %outer.iv.next, %n
br i1 %outer.cond, label %outer, label %exit
exit:
ret void
}
|
