1; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=4 --basic-block-sections=none -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
2; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=4 --basic-block-sections=all -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
3; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=5 --basic-block-sections=none -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
4; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=5 --basic-block-sections=all -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
5
6; CHECK:      DW_TAG_variable
7; CHECK-NEXT: DW_AT_location
8; CHECK-NEXT: [0x{{[0-9a-f]+}}, 0x{{[0-9a-f]+}}): DW_OP_consts +7, DW_OP_stack_value)
9; CHECK-NEXT: DW_AT_name	("i")
10
11; Source to generate the IR below:
12; void f1();
13; int f2();
14; void test() {
15;   // constant value through partial scope, no BB boundary
16;   // Shouldn't change with BB-sections
17;   int i = 7;
18;   f1();
19;   i = f2();
20;   f1();
21; }
22;
23; $ clang++ -S -emit-llvm -g -O2 loclist_4.cc
24
25define dso_local void @_Z4testv() local_unnamed_addr !dbg !7 {
26entry:
27  call void @llvm.dbg.value(metadata i32 7, metadata !11, metadata !DIExpression()), !dbg !13
28  tail call void @_Z2f1v(), !dbg !14
29  %call = tail call i32 @_Z2f2v(), !dbg !15
30  call void @llvm.dbg.value(metadata i32 %call, metadata !11, metadata !DIExpression()), !dbg !13
31  tail call void @_Z2f1v(), !dbg !16
32  ret void, !dbg !17
33}
34
35declare !dbg !18 dso_local void @_Z2f1v() local_unnamed_addr
36
37declare !dbg !19 dso_local i32 @_Z2f2v() local_unnamed_addr
38
39declare void @llvm.dbg.value(metadata, metadata, metadata)
40
41!llvm.dbg.cu = !{!0}
42!llvm.module.flags = !{!3, !4, !5}
43!llvm.ident = !{!6}
44
45!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 13.0.0 ([email protected]:llvm/llvm-project.git 593cb4655097552ac6d81ce18a2851ae0feb8d3c)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
46!1 = !DIFile(filename: "loclist_4.cc", directory: "/code")
47!2 = !{}
48!3 = !{i32 7, !"Dwarf Version", i32 4}
49!4 = !{i32 2, !"Debug Info Version", i32 3}
50!5 = !{i32 1, !"wchar_size", i32 4}
51!6 = !{!"clang version 13.0.0 ([email protected]:llvm/llvm-project.git 593cb4655097552ac6d81ce18a2851ae0feb8d3c)"}
52!7 = distinct !DISubprogram(name: "test", linkageName: "_Z4testv", scope: !1, file: !1, line: 3, type: !8, scopeLine: 3, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !10)
53!8 = !DISubroutineType(types: !9)
54!9 = !{null}
55!10 = !{!11}
56!11 = !DILocalVariable(name: "i", scope: !7, file: !1, line: 6, type: !12)
57!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
58!13 = !DILocation(line: 0, scope: !7)
59!14 = !DILocation(line: 7, column: 3, scope: !7)
60!15 = !DILocation(line: 8, column: 7, scope: !7)
61!16 = !DILocation(line: 9, column: 3, scope: !7)
62!17 = !DILocation(line: 10, column: 1, scope: !7)
63!18 = !DISubprogram(name: "f1", linkageName: "_Z2f1v", scope: !1, file: !1, line: 1, type: !8, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
64!19 = !DISubprogram(name: "f2", linkageName: "_Z2f2v", scope: !1, file: !1, line: 2, type: !20, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
65!20 = !DISubroutineType(types: !21)
66!21 = !{!12}
67