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
|
; REQUIRES: x86_64-linux
; RUN: opt < %s -passes=pseudo-probe -function-sections -S -o %t
; RUN: FileCheck %s < %t --check-prefix=CHECK-IL
; RUN: llc %t -stop-after=pseudo-probe-inserter -o - | FileCheck %s --check-prefix=CHECK-MIR
; RUN: llc %t -function-sections -filetype=asm -o %t1
; RUN: FileCheck %s < %t1 --check-prefix=CHECK-ASM
; RUN: llc %t -function-sections -filetype=obj -o %t2
; RUN: llvm-readelf -S -g %t2 | FileCheck %s --check-prefix=CHECK-SEC
; RUN: llvm-mc %t1 -filetype=obj -o %t3
; RUN: llvm-readelf -S -g %t3 | FileCheck %s --check-prefix=CHECK-SEC
; RUN: llc %t -function-sections -unique-section-names=0 -filetype=obj -o %t4
; RUN: llvm-readelf -S %t4 | FileCheck %s --check-prefix=CHECK-SEC2
;; Check the generation of pseudoprobe intrinsic call.
@a = dso_local global i32 0, align 4
define void @foo(i32 %x) !dbg !3 {
bb0:
%cmp = icmp eq i32 %x, 0
; CHECK-IL-LABEL: void @foo(i32 %x) !dbg ![[#]] {
; CHECK-IL: call void @llvm.pseudoprobe(i64 [[#GUID:]], i64 1, i32 0, i64 -1), !dbg ![[#FAKELINE:]]
; CHECK-MIR: PSEUDO_PROBE [[#GUID:]], 1, 0, 0
; CHECK-ASM: .pseudoprobe [[#GUID:]] 1 0 0 foo
br i1 %cmp, label %bb1, label %bb2
bb1:
; CHECK-IL: call void @llvm.pseudoprobe(i64 [[#GUID:]], i64 2, i32 0, i64 -1), !dbg ![[#FAKELINE]]
; CHECK-MIR: PSEUDO_PROBE [[#GUID]], 3, 0, 0
; CHECK-MIR: PSEUDO_PROBE [[#GUID]], 4, 0, 0
; CHECK-ASM: .pseudoprobe [[#GUID]] 3 0 0 foo
; CHECK-ASM: .pseudoprobe [[#GUID]] 4 0 0 foo
store i32 6, ptr @a, align 4
br label %bb3
bb2:
; CHECK-IL: call void @llvm.pseudoprobe(i64 [[#GUID:]], i64 3, i32 0, i64 -1), !dbg ![[#FAKELINE]]
; CHECK-MIR: PSEUDO_PROBE [[#GUID]], 2, 0, 0
; CHECK-MIR: PSEUDO_PROBE [[#GUID]], 4, 0, 0
; CHECK-ASM: .pseudoprobe [[#GUID]] 2 0 0 foo
; CHECK-ASM: .pseudoprobe [[#GUID]] 4 0 0 foo
store i32 8, ptr @a, align 4
br label %bb3
bb3:
; CHECK-IL: call void @llvm.pseudoprobe(i64 [[#GUID]], i64 4, i32 0, i64 -1), !dbg ![[#REALLINE:]]
ret void, !dbg !12
}
declare void @bar(i32 %x)
define internal void @foo2(ptr %f) !dbg !4 {
entry:
; CHECK-IL-LABEL: void @foo2(ptr %f) !dbg ![[#]] {
; CHECK-IL: call void @llvm.pseudoprobe(i64 [[#GUID2:]], i64 1, i32 0, i64 -1)
; CHECK-MIR: PSEUDO_PROBE [[#GUID2:]], 1, 0, 0
; CHECK-ASM: .pseudoprobe [[#GUID2:]] 1 0 0 foo2
; Check pseudo_probe metadata attached to the indirect call instruction.
; CHECK-IL: call void %f(i32 1), !dbg ![[#PROBE0:]]
; CHECK-MIR: PSEUDO_PROBE [[#GUID2]], 2, 1, 0
; CHECK-ASM: .pseudoprobe [[#GUID2]] 2 1 0 foo2
call void %f(i32 1), !dbg !13
; Check pseudo_probe metadata attached to the direct call instruction.
; CHECK-IL: call void @bar(i32 1), !dbg ![[#PROBE1:]]
; CHECK-MIR: PSEUDO_PROBE [[#GUID2]], 3, 2, 0
; CHECK-ASM: .pseudoprobe [[#GUID2]] 3 2 0 foo2
call void @bar(i32 1)
ret void
}
$foo3 = comdat any
define void @foo3(i32 %x) comdat {
entry:
ret void
}
; CHECK-IL: Function Attrs: nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; CHECK-IL-NEXT: declare void @llvm.pseudoprobe(i64, i64, i32, i64)
; CHECK-IL: ![[#FOO:]] = distinct !DISubprogram(name: "foo"
; CHECK-IL: ![[#FAKELINE]] = !DILocation(line: 0, scope: ![[#FOO]])
; CHECK-IL: ![[#REALLINE]] = !DILocation(line: 2, scope: ![[#DISC0:]])
; CHECK-IL: ![[#DISC0]] = !DILexicalBlockFile(scope: ![[#FOO]], file: ![[#]], discriminator: 0)
; CHECK-IL: ![[#PROBE0]] = !DILocation(line: 2, column: 20, scope: ![[#SCOPE0:]])
;; A discriminator of 387973143 which is 0x17200017 in hexdecimal, stands for a direct call probe
;; with an index of 2.
; CHECK-IL: ![[#SCOPE0]] = !DILexicalBlockFile(scope: ![[#]], file: ![[#]], discriminator: 387973143)
; CHECK-IL: ![[#PROBE1]] = !DILocation(line: 0, scope: ![[#SCOPE1:]])
;; A discriminator of 455082015 which is 0x1b20001f in hexdecimal, stands for a direct call probe
;; with an index of 3.
; CHECK-IL: ![[#SCOPE1]] = !DILexicalBlockFile(scope: ![[#]], file: ![[#]], discriminator: 455082015)
; Check the generation of .pseudo_probe_desc section
; CHECK-ASM: .section .pseudo_probe_desc,"G",@progbits,.pseudo_probe_desc_foo,comdat
; CHECK-ASM-NEXT: .quad [[#GUID]]
; CHECK-ASM-NEXT: .quad [[#HASH:]]
; CHECK-ASM-NEXT: .byte 3
; CHECK-ASM-NEXT: .ascii "foo"
; CHECK-ASM-NEXT: .section .pseudo_probe_desc,"G",@progbits,.pseudo_probe_desc_foo2,comdat
; CHECK-ASM-NEXT: .quad [[#GUID2]]
; CHECK-ASM-NEXT: .quad [[#HASH2:]]
; CHECK-ASM-NEXT: .byte 4
; CHECK-ASM-NEXT: .ascii "foo2"
; CHECK-SEC: [Nr] Name Type {{.*}} ES Flg Lk Inf Al
; CHECK-SEC: [ 3] .text.foo PROGBITS {{.*}} 00 AX 0 0 16
; CHECK-SEC: [ 5] .text.foo2 PROGBITS {{.*}} 00 AX 0 0 16
; CHECK-SEC: [ 8] .text.foo3 PROGBITS {{.*}} 00 AXG 0 0 16
; CHECK-SEC-COUNT-3: .pseudo_probe_desc PROGBITS
; CHECK-SEC: .pseudo_probe PROGBITS {{.*}} 00 L 3 0 1
; CHECK-SEC-NEXT: .pseudo_probe PROGBITS {{.*}} 00 L 5 0 1
; CHECK-SEC-NEXT: .pseudo_probe PROGBITS {{.*}} 00 LG 8 0 1
; CHECK-SEC-NOT: .rela.pseudo_probe
; CHECK-SEC: COMDAT group section [ 7] `.group' [foo3] contains 2 sections:
; CHECK-SEC-NEXT: [Index] Name
; CHECK-SEC-NEXT: [ 8] .text.foo3
; CHECK-SEC-NEXT: [ 21] .pseudo_probe
; CHECK-SEC-EMPTY:
; CHECK-SEC-NEXT: COMDAT group section [ 10] `.group' [.pseudo_probe_desc_foo] contains 1 sections:
; CHECK-SEC-NEXT: [Index] Name
; CHECK-SEC-NEXT: [ 11] .pseudo_probe_desc
; CHECK-SEC-EMPTY:
; CHECK-SEC-NEXT: COMDAT group section [ 12] `.group' [.pseudo_probe_desc_foo2] contains 1 sections:
; CHECK-SEC-NEXT: [Index] Name
; CHECK-SEC-NEXT: [ 13] .pseudo_probe_desc
; CHECK-SEC-EMPTY:
; CHECK-SEC-NEXT: COMDAT group section [ 14] `.group' [.pseudo_probe_desc_foo3] contains 1 sections:
; CHECK-SEC-NEXT: [Index] Name
; CHECK-SEC-NEXT: [ 15] .pseudo_probe_desc
; CHECK-SEC2: [Nr] Name Type {{.*}} ES Flg Lk Inf Al
; CHECK-SEC2: [ 3] .text PROGBITS {{.*}} 00 AX 0 0 16
; CHECK-SEC2: [ 5] .text PROGBITS {{.*}} 00 AX 0 0 16
; CHECK-SEC2: [ 8] .text PROGBITS {{.*}} 00 AXG 0 0 16
; CHECK-SEC2-COUNT-3: .pseudo_probe_desc PROGBITS
; CHECK-SEC2: .pseudo_probe PROGBITS {{.*}} 00 L 3 0 1
; CHECK-SEC2-NEXT: .pseudo_probe PROGBITS {{.*}} 00 L 5 0 1
; CHECK-SEC2-NEXT: .pseudo_probe PROGBITS {{.*}} 00 LG 8 0 1
; CHECK-SEC2-NOT: .rela.pseudo_probe
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!9, !10}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1)
!1 = !DIFile(filename: "test.c", directory: "")
!2 = !{}
!3 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !5, unit: !0, retainedNodes: !2)
!4 = distinct !DISubprogram(name: "foo2", scope: !1, file: !1, line: 2, type: !5, unit: !0, retainedNodes: !2)
!5 = !DISubroutineType(types: !6)
!6 = !{!7}
!7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!9 = !{i32 2, !"Dwarf Version", i32 4}
!10 = !{i32 2, !"Debug Info Version", i32 3}
!11 = !{!"clang version 3.9.0"}
!12 = !DILocation(line: 2, scope: !14)
!13 = !DILocation(line: 2, column: 20, scope: !4)
!14 = !DILexicalBlockFile(scope: !3, file: !1, discriminator: 1)
|
