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
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
|
; RUN: opt -S %s -passes=sample-profile -sample-profile-file=%S/Inputs/indirect-call.prof | FileCheck %s
; RUN: opt -S %s -passes=sample-profile -sample-profile-file=%S/Inputs/indirect-call.extbinary.afdo | FileCheck %s
; CHECK-LABEL: @test
define void @test(ptr) #0 !dbg !3 {
%2 = alloca ptr
store ptr %0, ptr %2
%3 = load ptr, ptr %2
; CHECK: call {{.*}}, !prof ![[PROF:[0-9]+]]
call void %3(), !dbg !4
ret void
}
; CHECK-LABEL: @test_inline
; If the indirect call is promoted and inlined in profile, we should promote and inline it.
define void @test_inline(ptr, ptr %x) #0 !dbg !6 {
%2 = alloca ptr
store ptr %0, ptr %2
%3 = load ptr, ptr %2
; CHECK: icmp {{.*}} @foo_inline2
; CHECK: br {{.*}} !prof ![[BR1:[0-9]+]]
; CHECK: if.true.direct_targ:
; CHECK-NOT: call
; CHECK: if.false.orig_indirect:
; CHECK: icmp {{.*}} @foo_inline1
; CHECK: br {{.*}} !prof ![[BR2:[0-9]+]]
; CHECK: if.true.direct_targ1:
; CHECK-NOT: call
; CHECK: if.false.orig_indirect2:
; CHECK: call {{.*}} !prof ![[VP:[0-9]+]]
call ptr %3(ptr %x), !dbg !7
ret void
}
; CHECK-LABEL: @test_inline_strip
; If the indirect call is promoted and inlined in profile, and the callee name
; is stripped we should promote and inline it.
define void @test_inline_strip(ptr, ptr %x) #0 !dbg !8 {
%2 = alloca ptr
store ptr %0, ptr %2
%3 = load ptr, ptr %2
; CHECK: icmp {{.*}} @foo_inline_strip.suffix
; CHECK: if.true.direct_targ:
; CHECK-NOT: call
; CHECK: if.false.orig_indirect:
; CHECK: call
call ptr %3(ptr %x), !dbg !9
ret void
}
; CHECK-LABEL: @test_inline_strip_conflict
; If the indirect call is promoted and inlined in profile, and the callee name
; is stripped, but have more than 1 potential match, we should not promote.
define void @test_inline_strip_conflict(ptr, ptr %x) #0 !dbg !10 {
%2 = alloca ptr
store ptr %0, ptr %2
%3 = load ptr, ptr %2
; CHECK-NOT: if.true.direct_targ:
call ptr %3(ptr %x), !dbg !11
ret void
}
; CHECK-LABEL: @test_noinline
; If the indirect call target is not available, we should not promote it.
define void @test_noinline(ptr) #0 !dbg !12 {
%2 = alloca ptr
store ptr %0, ptr %2
%3 = load ptr, ptr %2
; CHECK-NOT: icmp
; CHECK: call
call void %3(), !dbg !13
ret void
}
; CHECK-LABEL: @test_noinline_bitcast
; If the indirect call has been promoted to a direct call with bitcast,
; do not inline it.
define float @test_noinline_bitcast(ptr) #0 !dbg !26 {
%2 = alloca ptr
store ptr %0, ptr %2
; CHECK: icmp
; CHECK: call
%3 = load ptr, ptr %2
%4 = call float %3(), !dbg !27
ret float %4
}
; CHECK-LABEL: @test_norecursive_inline
; If the indirect call target is the caller, we should not promote it.
define void @test_norecursive_inline() #0 !dbg !24 {
; CHECK-NOT: icmp
; CHECK: call
%1 = load ptr, ptr @y, align 8
call void %1(), !dbg !25
ret void
}
define ptr @return_arg(ptr readnone returned) #0 !dbg !29{
ret ptr %0
}
; CHECK-LABEL: @return_arg_caller
; When the promoted indirect call returns a parameter that was defined by the
; return value of a previous direct call. Checks both direct call and promoted
; indirect call are inlined.
define ptr @return_arg_caller(ptr nocapture) #0 !dbg !30{
; CHECK-NOT: call ptr @foo_inline1
; CHECK: if.true.direct_targ:
; CHECK-NOT: call
; CHECK: if.false.orig_indirect:
; CHECK: call
%2 = call ptr @foo_inline1(ptr null), !dbg !31
%cmp = icmp ne ptr %2, null
br i1 %cmp, label %then, label %else
then:
%3 = tail call ptr %0(ptr %2), !dbg !32
ret ptr %3
else:
ret ptr null
}
; CHECK-LABEL: @branch_prof_valid
; Check the conditional branch generated by indirect call promotion won't
; have invalid profile like !{!"branch_weights", i32 0, i32 0}.
define void @branch_prof_valid(ptr %t0) #0 !dbg !33 {
%t1 = alloca ptr
store ptr %t0, ptr %t1
%t2 = load ptr, ptr %t1
; CHECK-NOT: call {{.*}}
; CHECK: br i1 {{.*}}, label %if.true.direct_targ, label %if.false.orig_indirect, {{.*}}, !prof ![[BR3:[0-9]+]]
call void %t2(), !dbg !34
ret void
}
@x = global i32 0, align 4
@y = global ptr null, align 8
define ptr @foo_inline1(ptr %x) #0 !dbg !14 {
ret ptr %x
}
define ptr @foo_inline_strip.suffix(ptr %x) #0 !dbg !15 {
ret ptr %x
}
define ptr @foo_inline_strip_conflict.suffix1(ptr %x) #0 !dbg !16 {
ret ptr %x
}
define ptr @foo_inline_strip_conflict.suffix2(ptr %x) #0 !dbg !17 {
ret ptr %x
}
define ptr @foo_inline_strip_conflict.suffix3(ptr %x) #0 !dbg !18 {
ret ptr %x
}
define ptr @foo_inline2(ptr %x) #0 !dbg !19 {
ret ptr %x
}
define void @foo_inline3() #0 !dbg !35 {
ret void
}
define i32 @foo_noinline(i32 %x) #0 !dbg !20 {
ret i32 %x
}
define void @foo_direct() #0 !dbg !21 {
ret void
}
define i32 @foo_direct_i32() #0 !dbg !28 {
ret i32 0;
}
; CHECK-LABEL: @test_direct
; We should not promote a direct call.
define void @test_direct() #0 !dbg !22 {
; CHECK-NOT: icmp
; CHECK: call
call void @foo_alias(), !dbg !23
ret void
}
@foo_alias = alias void (), ptr @foo_direct
attributes #0 = {"use-sample-profile"}
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!2}
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1)
!1 = !DIFile(filename: "test.cc", directory: "/")
!2 = !{i32 2, !"Debug Info Version", i32 3}
!3 = distinct !DISubprogram(name: "test", scope: !1, file: !1, line: 3, unit: !0)
!4 = !DILocation(line: 4, scope: !3)
!5 = !DILocation(line: 6, scope: !3)
; CHECK: ![[PROF]] = !{!"VP", i32 0, i64 3457, i64 9191153033785521275, i64 2059, i64 -1069303473483922844, i64 1398}
; CHECK: ![[BR1]] = !{!"branch_weights", i32 4000, i32 4000}
; CHECK: ![[BR2]] = !{!"branch_weights", i32 3000, i32 1000}
; CHECK: ![[VP]] = !{!"VP", i32 0, i64 8000, i64 7476224446746900038, i64 -1, i64 925324185419832389, i64 -1, i64 -6391416044382067764, i64 1000}
; CHECK: ![[BR3]] = !{!"branch_weights", i32 1, i32 0}
!6 = distinct !DISubprogram(name: "test_inline", scope: !1, file: !1, line: 6, unit: !0)
!7 = !DILocation(line: 7, scope: !6)
!8 = distinct !DISubprogram(name: "test_inline_strip", scope: !1, file: !1, line: 8, unit: !0)
!9 = !DILocation(line: 9, scope: !8)
!10 = distinct !DISubprogram(name: "test_inline_strip_conflict", scope: !1, file: !1, line: 10, unit: !0)
!11 = !DILocation(line: 11, scope: !10)
!12 = distinct !DISubprogram(name: "test_noinline", scope: !1, file: !1, line: 12, unit: !0)
!13 = !DILocation(line: 13, scope: !12)
!14 = distinct !DISubprogram(name: "foo_inline1", scope: !1, file: !1, line: 11, unit: !0)
!15 = distinct !DISubprogram(name: "foo_inline_strip.suffix", scope: !1, file: !1, line: 1, unit: !0)
!16 = distinct !DISubprogram(name: "foo_inline_strip_conflict.suffix1", scope: !1, file: !1, line: 1, unit: !0)
!17 = distinct !DISubprogram(name: "foo_inline_strip_conflict.suffix2", scope: !1, file: !1, line: 1, unit: !0)
!18 = distinct !DISubprogram(name: "foo_inline_strip_conflict.suffix3", scope: !1, file: !1, line: 1, unit: !0)
!19 = distinct !DISubprogram(name: "foo_inline2", scope: !1, file: !1, line: 19, unit: !0)
!20 = distinct !DISubprogram(name: "foo_noinline", scope: !1, file: !1, line: 20, unit: !0)
!21 = distinct !DISubprogram(name: "foo_direct", scope: !1, file: !1, line: 21, unit: !0)
!22 = distinct !DISubprogram(name: "test_direct", scope: !1, file: !1, line: 22, unit: !0)
!23 = !DILocation(line: 23, scope: !22)
!24 = distinct !DISubprogram(name: "test_norecursive_inline", scope: !1, file: !1, line: 12, unit: !0)
!25 = !DILocation(line: 13, scope: !24)
!26 = distinct !DISubprogram(name: "test_noinline_bitcast", scope: !1, file: !1, line: 12, unit: !0)
!27 = !DILocation(line: 13, scope: !26)
!28 = distinct !DISubprogram(name: "foo_direct_i32", scope: !1, file: !1, line: 11, unit: !0)
!29 = distinct !DISubprogram(name: "return_arg", scope: !1, file: !1, line: 11, unit: !0)
!30 = distinct !DISubprogram(name: "return_arg_caller", scope: !1, file: !1, line: 11, unit: !0)
!31 = !DILocation(line: 12, scope: !30)
!32 = !DILocation(line: 13, scope: !30)
!33 = distinct !DISubprogram(name: "branch_prof_valid", scope: !1, file: !1, line: 25, unit: !0)
!34 = !DILocation(line: 27, scope: !33)
!35 = distinct !DISubprogram(name: "foo_inline3", scope: !1, file: !1, line: 29, unit: !0)
|
