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7d6813a6c8
This change simplifies code that has to deal with DIGlobalVariableExpression and mirrors how we treat DIExpressions in debug info intrinsics. Before this change there were two ways of representing empty expressions on globals, a nullptr and an empty !DIExpression(). If someone needs to upgrade out-of-tree testcases: perl -pi -e 's/(!DIGlobalVariableExpression\(var: ![0-9]*)\)/\1, expr: !DIExpression())/g' <MYTEST.ll> will catch 95%. llvm-svn: 312144
75 lines
3.4 KiB
LLVM
75 lines
3.4 KiB
LLVM
; DWARF linkage name attributes are optional; verify they are missing for
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; PS4 triple or when tuning for SCE.
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; RUN: llc -O0 -mtriple=x86_64-unknown-unknown < %s | FileCheck %s -check-prefix LINKAGE1
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; RUN: llc -O0 -mtriple=x86_64-unknown-unknown < %s | FileCheck %s -check-prefix LINKAGE2
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; RUN: llc -O0 -mtriple=x86_64-scei-ps4 < %s | FileCheck %s -check-prefix NOLINKAGE
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; RUN: llc -O0 -mtriple=x86_64-unknown-unknown -debugger-tune=sce < %s | FileCheck %s -check-prefix NOLINKAGE
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; $ clang++ -emit-llvm -S -g dwarf-linkage-names.cpp
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; namespace test {
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; int global_var;
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; int bar() { return global_var; }
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;};
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; With linkage names, we get an attribute for the declaration (first) entry
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; for the global variable, and one for the function.
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; This assumes the variable will appear before the function.
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; LINKAGE1: .section .debug_info
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; LINKAGE1: DW_TAG_variable
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; LINKAGE1-NOT: DW_TAG
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; LINKAGE1: {{DW_AT_(MIPS_)?linkage_name}}
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; LINKAGE1: DW_TAG_subprogram
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; LINKAGE1-NOT: DW_TAG
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; LINKAGE1: {{DW_AT_(MIPS_)?linkage_name}}
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; LINKAGE1: .section
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; Also verify we see the mangled names. We do this as a separate pass to
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; avoid depending on the order of .debug_info and .debug_str sections.
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; LINKAGE2-DAG: .asciz "_ZN4test10global_varE"
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; LINKAGE2-DAG: .asciz "_ZN4test3barEv"
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; Without linkage names, verify there aren't any linkage-name attributes,
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; and no mangled names.
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; NOLINKAGE-NOT: {{DW_AT_(MIPS_)?linkage_name}}
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; NOLINKAGE-NOT: .asciz "_ZN4test10global_varE"
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; NOLINKAGE-NOT: .asciz "_ZN4test3barEv"
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source_filename = "test/DebugInfo/X86/dwarf-linkage-names.ll"
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@_ZN4test10global_varE = global i32 0, align 4, !dbg !0
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; Function Attrs: nounwind uwtable
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define i32 @_ZN4test3barEv() #0 !dbg !11 {
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entry:
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%0 = load i32, i32* @_ZN4test10global_varE, align 4, !dbg !14
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ret i32 %0, !dbg !15
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}
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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" }
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!llvm.dbg.cu = !{!5}
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!llvm.module.flags = !{!8, !9}
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!llvm.ident = !{!10}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = !DIGlobalVariable(name: "global_var", linkageName: "_ZN4test10global_varE", scope: !2, file: !3, line: 2, type: !4, isLocal: false, isDefinition: true)
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!2 = !DINamespace(name: "test", scope: null)
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!3 = !DIFile(filename: "dwarf-linkage-names.cpp", directory: "/home/probinson/projects/scratch")
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!4 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!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)
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!6 = !{}
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!7 = !{!0}
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!8 = !{i32 2, !"Dwarf Version", i32 4}
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!9 = !{i32 2, !"Debug Info Version", i32 3}
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!10 = !{!"clang version 3.8.0 (trunk 244662)"}
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!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, variables: !6)
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!12 = !DISubroutineType(types: !13)
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!13 = !{!4}
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!14 = !DILocation(line: 3, column: 21, scope: !11)
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!15 = !DILocation(line: 3, column: 14, scope: !11)
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