xref: /llvm-project/llvm/test/DebugInfo/COFF/ARMNT/arm-register-variables.ll (revision 4f083c0a2cb1d19942406f7e6e97ae47e8ac91b1) 
1; RUN: llc < %s -filetype=obj -arm-atomic-cfg-tidy=0 | llvm-readobj --codeview - | FileCheck %s --check-prefix=OBJ
2
3; Generated from:
4
5; volatile int x;
6; int getint(void);
7; void putint(int);
8; static inline int inlineinc(int a) {
9;   int b = a + 1;
10;   ++x;
11;   return b;
12; }
13; void f(int p) {
14;   if (p) {
15;     int a = getint();
16;     int b = inlineinc(a);
17;     putint(b);
18;   } else {
19;     int c = getint();
20;     putint(c);
21;   }
22; }
23
24;      OBJ:   Compile3Sym {
25; OBJ-NEXT:     Kind: S_COMPILE3 (0x113C)
26; OBJ-NEXT:     Language: C (0x0)
27; OBJ-NEXT:     Flags [ (0x4000)
28; OBJ-NEXT:       HotPatch (0x4000)
29; OBJ-NEXT:     ]
30; OBJ-NEXT:     Machine: ARMNT (0xF4)
31
32;      OBJ: LocalSym {
33; OBJ-NEXT:   Kind: S_LOCAL (0x113E)
34; OBJ-NEXT:   Type: int (0x74)
35; OBJ-NEXT:   Flags [ (0x1)
36; OBJ-NEXT:     IsParameter (0x1)
37; OBJ-NEXT:   ]
38; OBJ-NEXT:   VarName: p
39; OBJ-NEXT: }
40; OBJ-NEXT: DefRangeRegisterRelSym {
41; OBJ-NEXT:   Kind: S_DEFRANGE_REGISTER_REL (0x1145)
42; OBJ-NEXT:   BaseRegister: ARM_SP (0x17)
43; OBJ-NEXT:   HasSpilledUDTMember: No
44; OBJ-NEXT:   OffsetInParent: 0
45; OBJ-NEXT:   BasePointerOffset: 12
46; OBJ-NEXT:   LocalVariableAddrRange {
47; OBJ-NEXT:     OffsetStart: .text+0x8
48; OBJ-NEXT:     ISectStart: 0x0
49; OBJ-NEXT:     Range: 0x1A
50; OBJ-NEXT:   }
51; OBJ-NEXT: }
52
53; ModuleID = 'test.c'
54source_filename = "test.c"
55target datalayout = "e-m:w-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64"
56target triple = "thumbv7-pc-windows-msvc19.11.0"
57
58@x = dso_local global i32 0, align 4, !dbg !0
59
60define dso_local arm_aapcs_vfpcc void @f(i32 %p) !dbg !14 {
61entry:
62  %p.addr = alloca i32, align 4
63  %a = alloca i32, align 4
64  %b = alloca i32, align 4
65  %c = alloca i32, align 4
66  store i32 %p, ptr %p.addr, align 4
67    #dbg_declare(ptr %p.addr, !17, !DIExpression(), !18)
68  %0 = load i32, ptr %p.addr, align 4, !dbg !19
69  %tobool = icmp ne i32 %0, 0, !dbg !19
70  %call = call arm_aapcs_vfpcc i32 @getint(), !dbg !20
71  br i1 %tobool, label %if.then, label %if.else, !dbg !19
72
73if.then:                                          ; preds = %entry
74    #dbg_declare(ptr %a, !22, !DIExpression(), !24)
75  store i32 %call, ptr %a, align 4, !dbg !24
76    #dbg_declare(ptr %b, !25, !DIExpression(), !26)
77  %1 = load i32, ptr %a, align 4, !dbg !26
78  %call1 = call arm_aapcs_vfpcc i32 @inlineinc(i32 %1), !dbg !26
79  store i32 %call1, ptr %b, align 4, !dbg !26
80  %2 = load i32, ptr %b, align 4, !dbg !27
81  br label %if.end, !dbg !28
82
83if.else:                                          ; preds = %entry
84    #dbg_declare(ptr %c, !29, !DIExpression(), !31)
85  store i32 %call, ptr %c, align 4, !dbg !31
86  %3 = load i32, ptr %c, align 4, !dbg !32
87  br label %if.end, !dbg !33
88
89if.end:                                           ; preds = %if.else, %if.then
90  %.sink = phi i32 [ %3, %if.else ], [ %2, %if.then ]
91  call arm_aapcs_vfpcc void @putint(i32 %.sink), !dbg !20
92  ret void, !dbg !34
93}
94
95declare dso_local arm_aapcs_vfpcc i32 @getint()
96
97define internal arm_aapcs_vfpcc i32 @inlineinc(i32 %a) !dbg !35 {
98entry:
99  %a.addr = alloca i32, align 4
100  %b = alloca i32, align 4
101  store i32 %a, ptr %a.addr, align 4
102    #dbg_declare(ptr %a.addr, !38, !DIExpression(), !39)
103    #dbg_declare(ptr %b, !40, !DIExpression(), !41)
104  %0 = load i32, ptr %a.addr, align 4, !dbg !41
105  %add = add nsw i32 %0, 1, !dbg !41
106  store i32 %add, ptr %b, align 4, !dbg !41
107  %1 = load volatile i32, ptr @x, align 4, !dbg !42
108  %inc = add nsw i32 %1, 1, !dbg !42
109  store volatile i32 %inc, ptr @x, align 4, !dbg !42
110  %2 = load i32, ptr %b, align 4, !dbg !43
111  ret i32 %2, !dbg !43
112}
113
114declare dso_local arm_aapcs_vfpcc void @putint(i32)
115
116!llvm.dbg.cu = !{!2}
117!llvm.module.flags = !{!9, !10, !11, !12}
118!llvm.ident = !{!13}
119
120!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
121!1 = distinct !DIGlobalVariable(name: "x", scope: !2, file: !6, line: 1, type: !7, isLocal: false, isDefinition: true)
122!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 12.0.0 (https://github.com/llvm/llvm-project.git fc031d29bea856f2b91a250fd81c5f9fb79dbe07)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
123!3 = !DIFile(filename: "F:\\tmp\\test.c", directory: "F:\\tmp", checksumkind: CSK_MD5, checksum: "5fbd15e58dd6931fc3081de308d52889")
124!4 = !{}
125!5 = !{!0}
126!6 = !DIFile(filename: "test.c", directory: "F:\\tmp", checksumkind: CSK_MD5, checksum: "5fbd15e58dd6931fc3081de308d52889")
127!7 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !8)
128!8 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
129!9 = !{i32 2, !"CodeView", i32 1}
130!10 = !{i32 2, !"Debug Info Version", i32 3}
131!11 = !{i32 1, !"wchar_size", i32 2}
132!12 = !{i32 1, !"min_enum_size", i32 4}
133!13 = !{!"clang version 12.0.0 (https://github.com/llvm/llvm-project.git fc031d29bea856f2b91a250fd81c5f9fb79dbe07)"}
134!14 = distinct !DISubprogram(name: "f", scope: !6, file: !6, line: 9, type: !15, scopeLine: 9, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !4)
135!15 = !DISubroutineType(types: !16)
136!16 = !{null, !8}
137!17 = !DILocalVariable(name: "p", arg: 1, scope: !14, file: !6, line: 9, type: !8)
138!18 = !DILocation(line: 9, scope: !14)
139!19 = !DILocation(line: 10, scope: !14)
140!20 = !DILocation(line: 0, scope: !21)
141!21 = distinct !DILexicalBlock(scope: !14, file: !6, line: 10)
142!22 = !DILocalVariable(name: "a", scope: !23, file: !6, line: 11, type: !8)
143!23 = distinct !DILexicalBlock(scope: !21, file: !6, line: 10)
144!24 = !DILocation(line: 11, scope: !23)
145!25 = !DILocalVariable(name: "b", scope: !23, file: !6, line: 12, type: !8)
146!26 = !DILocation(line: 12, scope: !23)
147!27 = !DILocation(line: 13, scope: !23)
148!28 = !DILocation(line: 14, scope: !23)
149!29 = !DILocalVariable(name: "c", scope: !30, file: !6, line: 15, type: !8)
150!30 = distinct !DILexicalBlock(scope: !21, file: !6, line: 14)
151!31 = !DILocation(line: 15, scope: !30)
152!32 = !DILocation(line: 16, scope: !30)
153!33 = !DILocation(line: 17, scope: !30)
154!34 = !DILocation(line: 18, scope: !14)
155!35 = distinct !DISubprogram(name: "inlineinc", scope: !6, file: !6, line: 4, type: !36, scopeLine: 4, flags: DIFlagPrototyped, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition, unit: !2, retainedNodes: !4)
156!36 = !DISubroutineType(types: !37)
157!37 = !{!8, !8}
158!38 = !DILocalVariable(name: "a", arg: 1, scope: !35, file: !6, line: 4, type: !8)
159!39 = !DILocation(line: 4, scope: !35)
160!40 = !DILocalVariable(name: "b", scope: !35, file: !6, line: 5, type: !8)
161!41 = !DILocation(line: 5, scope: !35)
162!42 = !DILocation(line: 6, scope: !35)
163!43 = !DILocation(line: 7, scope: !35)
164