| ; RUN: llc -dwarf-version=5 -O0 %s -mtriple=x86_64-unknown-linux-gnu -filetype=obj -o %t |
| ; RUN: llvm-dwarfdump -v %t | FileCheck %s |
| |
| ; Make sure we don't generate a duplicate DW_AT_rnglists_base attribute in the CU DIE |
| ; when more than one range list is emitted. |
| ; From the source: |
| ; |
| ; void f1(); |
| ; void f2() { |
| ; f1(); |
| ; { |
| ; bool b; |
| ; f1(); |
| ; f1(); |
| ; } |
| ; } |
| ; __attribute__((section(".text.foo"))) void f3() { } |
| |
| ; Compile with clang -gwarf5 -S -emit-llvm |
| ; and change the resulting IR to move the first call to f1() to between |
| ; the second and the third call. This, along with the dbg.declare instruction |
| ; for the variable b, creates a gap in the code range for the nested lexical |
| ; scope that is b's immediate parent scope. A range list is emitted for that scope. |
| ; |
| ; In addition, the placement of f3() in a different section forces a |
| ; rangelist to be emitted for the CU instead of simply using low/high pc |
| ; attributes. |
| |
| ; CHECK: .debug_info contents: |
| ; CHECK: DW_TAG_compile_unit |
| ; Make sure we have 2 CU ranges. |
| ; CHECK: DW_AT_ranges |
| ; CHECK-NEXT: [0x{{[0-9a-f]+, 0x[0-9a-f]+}}) ".text" |
| ; CHECK-NEXT: [0x{{[0-9a-f]+, 0x[0-9a-f]+}}) ".text.foo" |
| ; We should not see any duplicate DW_AT_rnglists_base attributes. |
| ; CHECK: DW_AT_rnglists_base [DW_FORM_sec_offset] (0x0000000c) |
| ; CHECK-NOT: DW_AT_rnglists_base |
| ; |
| ; Make sure we see 2 ranges in the lexical block DIE. |
| ; CHECK: DW_TAG_lexical_block |
| ; CHECK-NOT: DW_TAG |
| ; CHECK: DW_AT_ranges |
| ; CHECK-NEXT: [0x{{[0-9a-f]+, 0x[0-9a-f]+}}) ".text" |
| ; CHECK-NEXT: [0x{{[0-9a-f]+, 0x[0-9a-f]+}}) ".text" |
| |
| define dso_local void @_Z2f2v() !dbg !7 { |
| entry: |
| %b = alloca i8, align 1 |
| call void @llvm.dbg.declare(metadata ptr %b, metadata !11, metadata !DIExpression()), !dbg !14 |
| call void @_Z2f1v(), !dbg !15 |
| ; The following call has been moved here from right after the alloca |
| call void @_Z2f1v(), !dbg !10 |
| call void @_Z2f1v(), !dbg !16 |
| ret void, !dbg !17 |
| } |
| |
| declare dso_local void @_Z2f1v() |
| |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) |
| |
| define dso_local void @_Z2f3v() section ".text.foo" !dbg !18 { |
| entry: |
| ret void, !dbg !19 |
| } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4, !5} |
| !llvm.ident = !{!6} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 7.0.0 (trunk 337837)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) |
| !1 = !DIFile(filename: "t3.cpp", directory: "/home/test/rangelists", checksumkind: CSK_MD5, checksum: "1ba81b564a832caa8114cd008c199048") |
| !2 = !{} |
| !3 = !{i32 2, !"Dwarf Version", i32 5} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = !{i32 1, !"wchar_size", i32 4} |
| !6 = !{!"clang version 7.0.0 (trunk 337837)"} |
| !7 = distinct !DISubprogram(name: "f2", linkageName: "_Z2f2v", scope: !1, file: !1, line: 2, type: !8, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2) |
| !8 = !DISubroutineType(types: !9) |
| !9 = !{null} |
| !10 = !DILocation(line: 3, column: 3, scope: !7) |
| !11 = !DILocalVariable(name: "b", scope: !12, file: !1, line: 5, type: !13) |
| !12 = distinct !DILexicalBlock(scope: !7, file: !1, line: 4, column: 3) |
| !13 = !DIBasicType(name: "bool", size: 8, encoding: DW_ATE_boolean) |
| !14 = !DILocation(line: 5, column: 10, scope: !12) |
| !15 = !DILocation(line: 6, column: 5, scope: !12) |
| !16 = !DILocation(line: 7, column: 5, scope: !12) |
| !17 = !DILocation(line: 9, column: 1, scope: !7) |
| !18 = distinct !DISubprogram(name: "f3", linkageName: "_Z2f3v", scope: !1, file: !1, line: 10, type: !8, isLocal: false, isDefinition: true, scopeLine: 10, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2) |
| !19 = !DILocation(line: 10, column: 51, scope: !18) |