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 --check-prefix=CHECK --check-prefix=SECTIONS
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 --check-prefix=CHECK --check-prefix=SECTIONS
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 ; SECTIONS-NEXT: [0x{{[0-9a-f]+}}, 0x{{[0-9a-f]+}}): DW_OP_consts +7, DW_OP_stack_value
10 ; SECTIONS-NEXT: [0x{{[0-9a-f]+}}, 0x{{[0-9a-f]+}}): DW_OP_consts +7, DW_OP_stack_value
11 ; CHECK-NEXT: DW_AT_name ("i")
13 ; In the test below, i's constant value of 7 is only valid partially as
14 ; it is redefined at the end. This forces the use of a loclist with basic
15 ; block sections. Without basic block sections, a single entry location
16 ; list would be used to mark the entire scope in which value of i is 7.
18 ; Source to generate the IR below:
33 ; $ clang++ -S -emit-llvm -g -O2 loclist_4.cc
36 @b = external dso_local local_unnamed_addr global i8, align 1
38 define dso_local void @_Z4testv() local_unnamed_addr !dbg !7 {
40 call void @llvm.dbg.value(metadata i32 7, metadata !11, metadata !DIExpression()), !dbg !13
41 tail call void @_Z2f1v(), !dbg !14
42 %0 = load i8, i8* @b, align 1, !dbg !15, !tbaa !17, !range !21
43 %tobool.not = icmp eq i8 %0, 0, !dbg !15
44 br i1 %tobool.not, label %if.end, label %if.then, !dbg !22
46 if.then: ; preds = %entry
47 tail call void @_Z2f1v(), !dbg !23
48 br label %if.end, !dbg !23
50 if.end: ; preds = %if.then, %entry
51 %call = tail call i32 @_Z2f2v(), !dbg !24
52 call void @llvm.dbg.value(metadata i32 %call, metadata !11, metadata !DIExpression()), !dbg !13
53 tail call void @_Z2f1v(), !dbg !25
57 declare !dbg !27 dso_local void @_Z2f1v() local_unnamed_addr
59 declare !dbg !28 dso_local i32 @_Z2f2v() local_unnamed_addr
61 ; Function Attrs: nofree nosync nounwind readnone speculatable willreturn
62 declare void @llvm.dbg.value(metadata, metadata, metadata)
65 !llvm.module.flags = !{!3, !4, !5}
68 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 13.0.0 (git@github.com:llvm/llvm-project.git 593cb4655097552ac6d81ce18a2851ae0feb8d3c)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
69 !1 = !DIFile(filename: "loclist_5.cc", directory: "/code")
71 !3 = !{i32 7, !"Dwarf Version", i32 4}
72 !4 = !{i32 2, !"Debug Info Version", i32 3}
73 !5 = !{i32 1, !"wchar_size", i32 4}
74 !6 = !{!"clang version 13.0.0 (git@github.com:llvm/llvm-project.git 593cb4655097552ac6d81ce18a2851ae0feb8d3c)"}
75 !7 = distinct !DISubprogram(name: "test", linkageName: "_Z4testv", scope: !1, file: !1, line: 5, type: !8, scopeLine: 5, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !10)
76 !8 = !DISubroutineType(types: !9)
79 !11 = !DILocalVariable(name: "i", scope: !7, file: !1, line: 9, type: !12)
80 !12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
81 !13 = !DILocation(line: 0, scope: !7)
82 !14 = !DILocation(line: 10, column: 3, scope: !7)
83 !15 = !DILocation(line: 11, column: 7, scope: !16)
84 !16 = distinct !DILexicalBlock(scope: !7, file: !1, line: 11, column: 7)
85 !17 = !{!18, !18, i64 0}
86 !18 = !{!"bool", !19, i64 0}
87 !19 = !{!"omnipotent char", !20, i64 0}
88 !20 = !{!"Simple C++ TBAA"}
90 !22 = !DILocation(line: 11, column: 7, scope: !7)
91 !23 = !DILocation(line: 12, column: 5, scope: !16)
92 !24 = !DILocation(line: 13, column: 7, scope: !7)
93 !25 = !DILocation(line: 14, column: 3, scope: !7)
94 !26 = !DILocation(line: 15, column: 1, scope: !7)
95 !27 = !DISubprogram(name: "f1", linkageName: "_Z2f1v", scope: !1, file: !1, line: 1, type: !8, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
96 !28 = !DISubprogram(name: "f2", linkageName: "_Z2f2v", scope: !1, file: !1, line: 2, type: !29, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
97 !29 = !DISubroutineType(types: !30)