1 ; RUN: llvm-as %s -o %t.bc 2 ; RUN: llvm-as %p/Inputs/only-needed-debug-metadata.ll -o %t2.bc 3 4 ; Without -only-needed, we need to link in both DISubprogram. 5 ; RUN: llvm-link -S %t2.bc %t.bc | FileCheck %s 6 ; CHECK: distinct !DISubprogram(name: "foo" 7 ; CHECK: distinct !DISubprogram(name: "unused" 8 9 ; With -only-needed, we only need to link in foo's DISubprogram. 10 ; RUN: llvm-link -S -only-needed %t2.bc %t.bc | FileCheck %s -check-prefix=ONLYNEEDED 11 ; ONLYNEEDED: distinct !DISubprogram(name: "foo" 12 ; ONLYNEEDED-NOT: distinct !DISubprogram(name: "unused" 13 14 source_filename = "test/Linker/only-needed-debug-metadata.ll" 15 16 @X = global i32 5, !dbg !0 17 @U = global i32 6, !dbg !6 18 @U_linkonce = linkonce_odr hidden global i32 6 19 20 define i32 @foo() !dbg !12 { 21 ret i32 7, !dbg !17 22 } 23 24 define i32 @unused() !dbg !18 { 25 ret i32 8, !dbg !21 26 } 27 28 !llvm.dbg.cu = !{!2} 29 !llvm.module.flags = !{!9, !10} 30 !llvm.ident = !{!11} 31 32 !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) 33 !1 = !DIGlobalVariable(name: "X", scope: !2, file: !3, line: 1, type: !8, isLocal: false, isDefinition: true) 34 !2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 3.8.0 (trunk 251407) (llvm/trunk 251401)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5) 35 !3 = !DIFile(filename: "linkused2.c", directory: "/usr/local/google/home/tejohnson/llvm/tmp") 36 !4 = !{} 37 !5 = !{!0, !6} 38 !6 = !DIGlobalVariableExpression(var: !7, expr: !DIExpression()) 39 !7 = !DIGlobalVariable(name: "U", scope: !2, file: !3, line: 2, type: !8, isLocal: false, isDefinition: true) 40 !8 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 41 !9 = !{i32 2, !"Dwarf Version", i32 4} 42 !10 = !{i32 2, !"Debug Info Version", i32 3} 43 !11 = !{!"clang version 3.8.0 (trunk 251407) (llvm/trunk 251401)"} 44 !12 = distinct !DISubprogram(name: "foo", scope: !3, file: !3, line: 4, type: !13, isLocal: false, isDefinition: true, scopeLine: 4, flags: DIFlagPrototyped, isOptimized: true, unit: !2, retainedNodes: !15) 45 !13 = !DISubroutineType(types: !14) 46 !14 = !{!8, !8} 47 !15 = !{!16} 48 !16 = !DILocalVariable(name: "x", arg: 1, scope: !12, file: !3, line: 4, type: !8) 49 !17 = !DILocation(line: 4, column: 13, scope: !12) 50 !18 = distinct !DISubprogram(name: "unused", scope: !3, file: !3, line: 8, type: !19, isLocal: false, isDefinition: true, scopeLine: 8, isOptimized: true, unit: !2, retainedNodes: !4) 51 !19 = !DISubroutineType(types: !20) 52 !20 = !{!8} 53 !21 = !DILocation(line: 9, column: 3, scope: !18) 54 55
