1 ; DWARF linkage name attributes are optional; verify they are missing for 2 ; PS4 triple or when tuning for SCE. 3 4 ; RUN: llc -O0 -mtriple=x86_64-unknown-unknown < %s | FileCheck %s -check-prefix LINKAGE1 5 ; RUN: llc -O0 -mtriple=x86_64-unknown-unknown < %s | FileCheck %s -check-prefix LINKAGE2 6 ; RUN: llc -O0 -mtriple=x86_64-scei-ps4 < %s | FileCheck %s -check-prefix NOLINKAGE 7 ; RUN: llc -O0 -mtriple=x86_64-unknown-unknown -debugger-tune=sce < %s | FileCheck %s -check-prefix NOLINKAGE 8 9 ; $ clang++ -emit-llvm -S -g dwarf-linkage-names.cpp 10 ; namespace test { 11 ; int global_var; 12 ; int bar() { return global_var; } 13 ;}; 14 15 ; With linkage names, we get an attribute for the declaration (first) entry 16 ; for the global variable, and one for the function. 17 18 ; This assumes the variable will appear before the function. 19 ; LINKAGE1: .section .debug_info 20 ; LINKAGE1: DW_TAG_variable 21 ; LINKAGE1-NOT: DW_TAG 22 ; LINKAGE1: {{DW_AT_(MIPS_)?linkage_name}} 23 ; LINKAGE1: DW_TAG_subprogram 24 ; LINKAGE1-NOT: DW_TAG 25 ; LINKAGE1: {{DW_AT_(MIPS_)?linkage_name}} 26 ; LINKAGE1: .section 27 28 ; Also verify we see the mangled names. We do this as a separate pass to 29 ; avoid depending on the order of .debug_info and .debug_str sections. 30 31 ; LINKAGE2-DAG: .asciz "_ZN4test10global_varE" 32 ; LINKAGE2-DAG: .asciz "_ZN4test3barEv" 33 34 ; Without linkage names, verify there aren't any linkage-name attributes, 35 ; and no mangled names. 36 37 ; NOLINKAGE-NOT: {{DW_AT_(MIPS_)?linkage_name}} 38 ; NOLINKAGE-NOT: .asciz "_ZN4test10global_varE" 39 ; NOLINKAGE-NOT: .asciz "_ZN4test3barEv" 40 41 source_filename = "test/DebugInfo/X86/dwarf-linkage-names.ll" 42 43 @_ZN4test10global_varE = global i32 0, align 4, !dbg !0 44 45 ; Function Attrs: nounwind uwtable 46 define i32 @_ZN4test3barEv() #0 !dbg !11 { 47 entry: 48 %0 = load i32, i32* @_ZN4test10global_varE, align 4, !dbg !14 49 ret i32 %0, !dbg !15 50 } 51 52 attributes #0 = { nounwind uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" } 53 54 !llvm.dbg.cu = !{!5} 55 !llvm.module.flags = !{!8, !9} 56 !llvm.ident = !{!10} 57 58 !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) 59 !1 = !DIGlobalVariable(name: "global_var", linkageName: "_ZN4test10global_varE", scope: !2, file: !3, line: 2, type: !4, isLocal: false, isDefinition: true) 60 !2 = !DINamespace(name: "test", scope: null) 61 !3 = !DIFile(filename: "dwarf-linkage-names.cpp", directory: "/home/probinson/projects/scratch") 62 !4 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 63 !5 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang version 3.8.0 (trunk 244662)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !6, globals: !7) 64 !6 = !{} 65 !7 = !{!0} 66 !8 = !{i32 2, !"Dwarf Version", i32 4} 67 !9 = !{i32 2, !"Debug Info Version", i32 3} 68 !10 = !{!"clang version 3.8.0 (trunk 244662)"} 69 !11 = distinct !DISubprogram(name: "bar", linkageName: "_ZN4test3barEv", scope: !2, file: !3, line: 3, type: !12, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, unit: !5, retainedNodes: !6) 70 !12 = !DISubroutineType(types: !13) 71 !13 = !{!4} 72 !14 = !DILocation(line: 3, column: 21, scope: !11) 73 !15 = !DILocation(line: 3, column: 14, scope: !11) 74 75
