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
|
; RUN: llc < %s -mtriple=arm64-windows -filetype=obj | llvm-readobj --codeview - | FileCheck %s --check-prefix=OBJ
; Generated from:
; volatile int x;
; int getint(void);
; void putint(int);
; static inline int inlineinc(int a) {
; int b = a + 1;
; ++x;
; return b;
; }
; void f(int p) {
; if (p) {
; int a = getint();
; int b = inlineinc(a);
; putint(b);
; } else {
; int c = getint();
; putint(c);
; }
; }
; OBJ: DefRangeRegisterRelSym {
; OBJ: Kind: S_DEFRANGE_REGISTER_REL (0x1145)
; OBJ: BaseRegister: ARM64_SP (0x51)
; OBJ: HasSpilledUDTMember: No
; OBJ: OffsetInParent: 0
; OBJ: BasePointerOffset: 12
; OBJ: LocalVariableAddrRange {
; OBJ: OffsetStart: .text+0x14
; OBJ: ISectStart: 0x0
; OBJ: Range: 0x30
; OBJ: }
; OBJ: }
; ModuleID = 't.cpp'
source_filename = "test/DebugInfo/COFF/register-variables-arm64.ll"
target datalayout = "e-m:w-p:64:64-i32:32-i64:64-i128:128-n32:64-S128"
target triple = "arm64-unknown-windows-msvc19.16.27023"
@x = common dso_local global i32 0, align 4, !dbg !0
; Function Attrs: noinline nounwind optnone uwtable
define dso_local void @f(i32 %p) #0 !dbg !12 {
entry:
%p.addr = alloca i32, align 4
%a = alloca i32, align 4
%b = alloca i32, align 4
%c = alloca i32, align 4
store i32 %p, ptr %p.addr, align 4
call void @llvm.dbg.declare(metadata ptr %p.addr, metadata !15, metadata !DIExpression()), !dbg !16
%0 = load i32, ptr %p.addr, align 4, !dbg !17
%tobool = icmp ne i32 %0, 0, !dbg !17
br i1 %tobool, label %if.then, label %if.else, !dbg !17
if.then: ; preds = %entry
call void @llvm.dbg.declare(metadata ptr %a, metadata !18, metadata !DIExpression()), !dbg !21
%call = call i32 @getint(), !dbg !21
store i32 %call, ptr %a, align 4, !dbg !21
call void @llvm.dbg.declare(metadata ptr %b, metadata !22, metadata !DIExpression()), !dbg !23
%1 = load i32, ptr %a, align 4, !dbg !23
%call1 = call i32 @inlineinc(i32 %1), !dbg !23
store i32 %call1, ptr %b, align 4, !dbg !23
%2 = load i32, ptr %b, align 4, !dbg !24
call void @putint(i32 %2), !dbg !24
br label %if.end, !dbg !25
if.else: ; preds = %entry
call void @llvm.dbg.declare(metadata ptr %c, metadata !26, metadata !DIExpression()), !dbg !28
%call2 = call i32 @getint(), !dbg !28
store i32 %call2, ptr %c, align 4, !dbg !28
%3 = load i32, ptr %c, align 4, !dbg !29
call void @putint(i32 %3), !dbg !29
br label %if.end, !dbg !30
if.end: ; preds = %if.else, %if.then
ret void, !dbg !31
}
; Function Attrs: nounwind readnone speculatable
declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
declare dso_local i32 @getint() #2
; Function Attrs: noinline nounwind optnone uwtable
define internal i32 @inlineinc(i32 %a) #0 !dbg !32 {
entry:
%a.addr = alloca i32, align 4
%b = alloca i32, align 4
store i32 %a, ptr %a.addr, align 4
call void @llvm.dbg.declare(metadata ptr %a.addr, metadata !35, metadata !DIExpression()), !dbg !36
call void @llvm.dbg.declare(metadata ptr %b, metadata !37, metadata !DIExpression()), !dbg !38
%0 = load i32, ptr %a.addr, align 4, !dbg !38
%add = add nsw i32 %0, 1, !dbg !38
store i32 %add, ptr %b, align 4, !dbg !38
%1 = load volatile i32, ptr @x, align 4, !dbg !39
%inc = add nsw i32 %1, 1, !dbg !39
store volatile i32 %inc, ptr @x, align 4, !dbg !39
%2 = load i32, ptr %b, align 4, !dbg !40
ret i32 %2, !dbg !40
}
declare dso_local void @putint(i32) #2
!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!8, !9, !10}
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
!1 = distinct !DIGlobalVariable(name: "x", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 9.0.0 (trunk 361867) (llvm/trunk 361866)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
!3 = !DIFile(filename: "t.c", directory: "S:\5CLLVM\5Csvn\5Csbr\5Cbin", checksumkind: CSK_MD5, checksum: "734c448e95a6204a439a847ed063e5ce")
!4 = !{}
!5 = !{!0}
!6 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !7)
!7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!8 = !{i32 2, !"CodeView", i32 1}
!9 = !{i32 2, !"Debug Info Version", i32 3}
!10 = !{i32 1, !"wchar_size", i32 2}
!11 = !{!"clang version 9.0.0 (trunk 361867) (llvm/trunk 361866)"}
!12 = distinct !DISubprogram(name: "f", scope: !3, file: !3, line: 9, type: !13, scopeLine: 9, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !4)
!13 = !DISubroutineType(types: !14)
!14 = !{null, !7}
!15 = !DILocalVariable(name: "p", arg: 1, scope: !12, file: !3, line: 9, type: !7)
!16 = !DILocation(line: 9, scope: !12)
!17 = !DILocation(line: 10, scope: !12)
!18 = !DILocalVariable(name: "a", scope: !19, file: !3, line: 11, type: !7)
!19 = distinct !DILexicalBlock(scope: !20, file: !3, line: 10)
!20 = distinct !DILexicalBlock(scope: !12, file: !3, line: 10)
!21 = !DILocation(line: 11, scope: !19)
!22 = !DILocalVariable(name: "b", scope: !19, file: !3, line: 12, type: !7)
!23 = !DILocation(line: 12, scope: !19)
!24 = !DILocation(line: 13, scope: !19)
!25 = !DILocation(line: 14, scope: !19)
!26 = !DILocalVariable(name: "c", scope: !27, file: !3, line: 15, type: !7)
!27 = distinct !DILexicalBlock(scope: !20, file: !3, line: 14)
!28 = !DILocation(line: 15, scope: !27)
!29 = !DILocation(line: 16, scope: !27)
!30 = !DILocation(line: 17, scope: !27)
!31 = !DILocation(line: 18, scope: !12)
!32 = distinct !DISubprogram(name: "inlineinc", scope: !3, file: !3, line: 4, type: !33, scopeLine: 4, flags: DIFlagPrototyped, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition, unit: !2, retainedNodes: !4)
!33 = !DISubroutineType(types: !34)
!34 = !{!7, !7}
!35 = !DILocalVariable(name: "a", arg: 1, scope: !32, file: !3, line: 4, type: !7)
!36 = !DILocation(line: 4, scope: !32)
!37 = !DILocalVariable(name: "b", scope: !32, file: !3, line: 5, type: !7)
!38 = !DILocation(line: 5, scope: !32)
!39 = !DILocation(line: 6, scope: !32)
!40 = !DILocation(line: 7, scope: !32)
|
