File: pseudo-probe-profile.ll

package info (click to toggle)
llvm-toolchain-14 1%3A14.0.6-12
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,496,180 kB
  • sloc: cpp: 5,593,972; ansic: 986,872; asm: 585,869; python: 184,223; objc: 72,530; lisp: 31,119; f90: 27,793; javascript: 9,780; pascal: 9,762; sh: 9,482; perl: 7,468; ml: 5,432; awk: 3,523; makefile: 2,538; xml: 953; cs: 573; fortran: 567
file content (151 lines) | stat: -rw-r--r-- 6,601 bytes parent folder | download | duplicates (6)
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
; RUN: opt < %s -passes=pseudo-probe,sample-profile -sample-profile-file=%S/Inputs/pseudo-probe-profile.prof -pass-remarks=sample-profile -pass-remarks-output=%t.opt.yaml -S | FileCheck %s
; RUN: FileCheck %s -check-prefix=YAML < %t.opt.yaml

define dso_local i32 @foo(i32 %x, void (i32)* %f) #0 !dbg !4 {
entry:
  %retval = alloca i32, align 4
  %x.addr = alloca i32, align 4
  store i32 %x, i32* %x.addr, align 4
  %0 = load i32, i32* %x.addr, align 4
  %cmp = icmp eq i32 %0, 0
  ; CHECK: call void @llvm.pseudoprobe(i64 [[#GUID:]], i64 1, i32 0, i64 -1)
  br i1 %cmp, label %if.then, label %if.else
  ; CHECK: br i1 %cmp, label %if.then, label %if.else, !prof ![[PD1:[0-9]+]]

if.then:
  ; CHECK: call {{.*}}, !dbg ![[#PROBE1:]], !prof ![[PROF1:[0-9]+]]
  call void %f(i32 1)
  ; CHECK: call void @llvm.pseudoprobe(i64 [[#GUID:]], i64 2, i32 0, i64 -1)
  store i32 1, i32* %retval, align 4
  br label %return

if.else:
  ; CHECK: call {{.*}}, !dbg ![[#PROBE2:]], !prof ![[PROF2:[0-9]+]]
  call void %f(i32 2)
  ; CHECK: call void @llvm.pseudoprobe(i64 [[#GUID:]], i64 3, i32 0, i64 -1)
  store i32 2, i32* %retval, align 4
  br label %return

return:
  ; CHECK: call void @llvm.pseudoprobe(i64 [[#GUID:]], i64 4, i32 0, i64 -1)
  %1 = load i32, i32* %retval, align 4
  ret i32 %1
}

attributes #0 = {"use-sample-profile"}

; CHECK: ![[PD1]] = !{!"branch_weights", i32 8, i32 7}
; CHECK: ![[#PROBE1]] = !DILocation(line: 0, scope: ![[#SCOPE1:]])
;; A discriminator of 119537711 which is 0x720002f in hexdecimal, stands for an indirect call probe
;; with an index of 5.
; CHECK: ![[#SCOPE1]] = !DILexicalBlockFile(scope: ![[#]], file: ![[#]], discriminator: 119537711)
; CHECK: ![[PROF1]] = !{!"VP", i32 0, i64 7, i64 9191153033785521275, i64 5, i64 -1069303473483922844, i64 2}
;; A discriminator of 119537719 which is 0x7200037 in hexdecimal, stands for an indirect call probe
;; with an index of 6.
; CHECK: ![[#PROBE2]] = !DILocation(line: 0, scope: ![[#SCOPE2:]])
; CHECK: ![[#SCOPE2]] = !DILexicalBlockFile(scope: ![[#]], file: ![[#]], discriminator: 119537719)
; CHECK: ![[PROF2]] = !{!"VP", i32 0, i64 6, i64 -1069303473483922844, i64 4, i64 9191153033785521275, i64 2}

!llvm.module.flags = !{!9, !10}

!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1)
!1 = !DIFile(filename: "test.c", directory: "")
!2 = !{}
!4 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, 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}

; Checking to see if YAML file is generated and contains remarks
;YAML:  --- !Analysis
;YAML-NEXT:  Pass:            sample-profile
;YAML-NEXT:  Name:            AppliedSamples
;YAML-NEXT:  DebugLoc:        { File: test.c, Line: 0, Column: 0 }
;YAML-NEXT:  Function:        foo
;YAML-NEXT:  Args:
;YAML-NEXT:    - String:          'Applied '
;YAML-NEXT:    - NumSamples:      '13'
;YAML-NEXT:    - String:          ' samples from profile (ProbeId='
;YAML-NEXT:    - ProbeId:         '1'
;YAML-NEXT:    - String:          ', Factor='
;YAML-NEXT:    - Factor:          '1.000000e+00'
;YAML-NEXT:    - String:          ', OriginalSamples='
;YAML-NEXT:    - OriginalSamples: '13'
;YAML-NEXT:    - String:          ')'
;YAML:  --- !Analysis
;YAML-NEXT:  Pass:            sample-profile
;YAML-NEXT:  Name:            AppliedSamples
;YAML-NEXT:  DebugLoc:        { File: test.c, Line: 0, Column: 0 }
;YAML-NEXT:  Function:        foo
;YAML-NEXT:  Args:
;YAML-NEXT:    - String:          'Applied '
;YAML-NEXT:    - NumSamples:      '7'
;YAML-NEXT:    - String:          ' samples from profile (ProbeId='
;YAML-NEXT:    - ProbeId:         '5'
;YAML-NEXT:    - String:          ', Factor='
;YAML-NEXT:    - Factor:          '1.000000e+00'
;YAML-NEXT:    - String:          ', OriginalSamples='
;YAML-NEXT:    - OriginalSamples: '7'
;YAML-NEXT:    - String:          ')'
;YAML:  --- !Analysis
;YAML-NEXT:  Pass:            sample-profile
;YAML-NEXT:  Name:            AppliedSamples
;YAML-NEXT:  DebugLoc:        { File: test.c, Line: 0, Column: 0 }
;YAML-NEXT:  Function:        foo
;YAML-NEXT:  Args:
;YAML-NEXT:    - String:          'Applied '
;YAML-NEXT:    - NumSamples:      '7'
;YAML-NEXT:    - String:          ' samples from profile (ProbeId='
;YAML-NEXT:    - ProbeId:         '2'
;YAML-NEXT:    - String:          ', Factor='
;YAML-NEXT:    - Factor:          '1.000000e+00'
;YAML-NEXT:    - String:          ', OriginalSamples='
;YAML-NEXT:    - OriginalSamples: '7'
;YAML-NEXT:    - String:          ')'
;YAML:  --- !Analysis
;YAML-NEXT:  Pass:            sample-profile
;YAML-NEXT:  Name:            AppliedSamples
;YAML-NEXT:  DebugLoc:        { File: test.c, Line: 0, Column: 0 }
;YAML-NEXT:  Function:        foo
;YAML-NEXT:  Args:
;YAML-NEXT:    - String:          'Applied '
;YAML-NEXT:    - NumSamples:      '6'
;YAML-NEXT:    - String:          ' samples from profile (ProbeId='
;YAML-NEXT:    - ProbeId:         '6'
;YAML-NEXT:    - String:          ', Factor='
;YAML-NEXT:    - Factor:          '1.000000e+00'
;YAML-NEXT:    - String:          ', OriginalSamples='
;YAML-NEXT:    - OriginalSamples: '6'
;YAML-NEXT:    - String:          ')'
;YAML:  --- !Analysis
;YAML-NEXT:  Pass:            sample-profile
;YAML-NEXT:  Name:            AppliedSamples
;YAML-NEXT:  DebugLoc:        { File: test.c, Line: 0, Column: 0 }
;YAML-NEXT:  Function:        foo
;YAML-NEXT:  Args:
;YAML-NEXT:    - String:          'Applied '
;YAML-NEXT:    - NumSamples:      '6'
;YAML-NEXT:    - String:          ' samples from profile (ProbeId='
;YAML-NEXT:    - ProbeId:         '3'
;YAML-NEXT:    - String:          ', Factor='
;YAML-NEXT:    - Factor:          '1.000000e+00'
;YAML-NEXT:    - String:          ', OriginalSamples='
;YAML-NEXT:    - OriginalSamples: '6'
;YAML-NEXT:    - String:          ')'
;YAML:  --- !Analysis
;YAML-NEXT:  Pass:            sample-profile
;YAML-NEXT:  Name:            AppliedSamples
;YAML-NEXT:  DebugLoc:        { File: test.c, Line: 0, Column: 0 }
;YAML-NEXT:  Function:        foo
;YAML-NEXT:  Args:
;YAML-NEXT:    - String:          'Applied '
;YAML-NEXT:    - NumSamples:      '13'
;YAML-NEXT:    - String:          ' samples from profile (ProbeId='
;YAML-NEXT:    - ProbeId:         '4'
;YAML-NEXT:    - String:          ', Factor='
;YAML-NEXT:    - Factor:          '1.000000e+00'
;YAML-NEXT:    - String:          ', OriginalSamples='
;YAML-NEXT:    - OriginalSamples: '13'
;YAML-NEXT:    - String:          ')'