| ; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=4 --basic-block-sections=none -filetype=obj -o - -experimental-debug-variable-locations=true | llvm-dwarfdump - | FileCheck %s |
| ; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=4 --basic-block-sections=all -filetype=obj -o - -experimental-debug-variable-locations=true | llvm-dwarfdump - | FileCheck %s --check-prefix=CHECK --check-prefix=SECTIONS |
| ; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=5 --basic-block-sections=none -filetype=obj -o - -experimental-debug-variable-locations=true | llvm-dwarfdump - | FileCheck %s |
| ; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=5 --basic-block-sections=all -filetype=obj -o - -experimental-debug-variable-locations=true | llvm-dwarfdump - | FileCheck %s --check-prefix=CHECK --check-prefix=SECTIONS |
| |
| ; CHECK: DW_TAG_variable |
| ; CHECK-NEXT: DW_AT_location |
| ; CHECK-NEXT: [0x{{[0-9a-f]+}}, 0x{{[0-9a-f]+}}): DW_OP_consts +7, DW_OP_stack_value |
| ; SECTIONS-NEXT: [0x{{[0-9a-f]+}}, 0x{{[0-9a-f]+}}): DW_OP_consts +7, DW_OP_stack_value |
| ; SECTIONS-NEXT: [0x{{[0-9a-f]+}}, 0x{{[0-9a-f]+}}): DW_OP_consts +7, DW_OP_stack_value |
| ; CHECK-NEXT: [0x{{[0-9a-f]+}}, 0x{{[0-9a-f]+}}): DW_OP_reg0 RAX) |
| ; CHECK-NEXT: DW_AT_name ("i") |
| |
| ; In the test below, i's constant value of 7 is only valid partially as |
| ; it is redefined at the end. This forces the use of a loclist with basic |
| ; block sections. Without basic block sections, a single entry location |
| ; list would be used to mark the entire scope in which value of i is 7. |
| |
| ; Source to generate the IR below: |
| |
| ; void f1(); |
| ; int f2(); |
| ; extern bool b; |
| ; extern int x; |
| ; void test() { |
| ; int i = 7; |
| ; f1(); |
| ; if (b) |
| ; f1(); |
| ; i = f2(); |
| ; f1(); |
| ; } |
| ; |
| ; $ clang++ -S -emit-llvm -g -O2 loclist_4.cc |
| |
| |
| @b = external dso_local local_unnamed_addr global i8, align 1 |
| |
| define dso_local void @_Z4testv() local_unnamed_addr !dbg !7 { |
| entry: |
| call void @llvm.dbg.value(metadata i32 7, metadata !11, metadata !DIExpression()), !dbg !13 |
| tail call void @_Z2f1v(), !dbg !14 |
| %0 = load i8, ptr @b, align 1, !dbg !15, !tbaa !17, !range !21 |
| %tobool.not = icmp eq i8 %0, 0, !dbg !15 |
| br i1 %tobool.not, label %if.end, label %if.then, !dbg !22 |
| |
| if.then: ; preds = %entry |
| tail call void @_Z2f1v(), !dbg !23 |
| br label %if.end, !dbg !23 |
| |
| if.end: ; preds = %if.then, %entry |
| %call = tail call i32 @_Z2f2v(), !dbg !24 |
| call void @llvm.dbg.value(metadata i32 %call, metadata !11, metadata !DIExpression()), !dbg !13 |
| tail call void @_Z2f1v(), !dbg !25 |
| ret void, !dbg !26 |
| } |
| |
| declare !dbg !27 dso_local void @_Z2f1v() local_unnamed_addr |
| |
| declare !dbg !28 dso_local i32 @_Z2f2v() local_unnamed_addr |
| |
| ; Function Attrs: nofree nosync nounwind readnone speculatable willreturn |
| declare void @llvm.dbg.value(metadata, metadata, metadata) |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4, !5} |
| !llvm.ident = !{!6} |
| |
| !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) |
| !1 = !DIFile(filename: "loclist_5.cc", directory: "/code") |
| !2 = !{} |
| !3 = !{i32 7, !"Dwarf Version", i32 4} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = !{i32 1, !"wchar_size", i32 4} |
| !6 = !{!"clang version 13.0.0 (git@github.com:llvm/llvm-project.git 593cb4655097552ac6d81ce18a2851ae0feb8d3c)"} |
| !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) |
| !8 = !DISubroutineType(types: !9) |
| !9 = !{null} |
| !10 = !{!11} |
| !11 = !DILocalVariable(name: "i", scope: !7, file: !1, line: 9, type: !12) |
| !12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !13 = !DILocation(line: 0, scope: !7) |
| !14 = !DILocation(line: 10, column: 3, scope: !7) |
| !15 = !DILocation(line: 11, column: 7, scope: !16) |
| !16 = distinct !DILexicalBlock(scope: !7, file: !1, line: 11, column: 7) |
| !17 = !{!18, !18, i64 0} |
| !18 = !{!"bool", !19, i64 0} |
| !19 = !{!"omnipotent char", !20, i64 0} |
| !20 = !{!"Simple C++ TBAA"} |
| !21 = !{i8 0, i8 2} |
| !22 = !DILocation(line: 11, column: 7, scope: !7) |
| !23 = !DILocation(line: 12, column: 5, scope: !16) |
| !24 = !DILocation(line: 13, column: 7, scope: !7) |
| !25 = !DILocation(line: 14, column: 3, scope: !7) |
| !26 = !DILocation(line: 15, column: 1, scope: !7) |
| !27 = !DISubprogram(name: "f1", linkageName: "_Z2f1v", scope: !1, file: !1, line: 1, type: !8, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2) |
| !28 = !DISubprogram(name: "f2", linkageName: "_Z2f2v", scope: !1, file: !1, line: 2, type: !29, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2) |
| !29 = !DISubroutineType(types: !30) |
| !30 = !{!12} |