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a9fbb2813b
This patch reverses the edge from DIGlobalVariable to GlobalVariable. This will allow us to more easily preserve debug info metadata when manipulating global variables. Fixes PR30362. A program for upgrading test cases is attached to that bug. Differential Revision: http://reviews.llvm.org/D20147 llvm-svn: 281284
130 lines
6.5 KiB
LLVM
130 lines
6.5 KiB
LLVM
; REQUIRES: object-emission
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; RUN: llc -mtriple=x86_64-linux -O0 -filetype=obj < %s | llvm-dwarfdump -debug-dump=info - | FileCheck %s
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; IR generated with `clang++ -g -emit-llvm -S` from the following code:
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; template<int x, int*, template<typename> class y, decltype(nullptr) n, int ...z> int func() { return 3; }
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; template<typename> struct y_impl { struct nested { }; };
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; int glbl = func<3, &glbl, y_impl, nullptr, 1, 2>();
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; y_impl<int>::nested n;
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; CHECK: [[INT:0x[0-9a-f]*]]:{{ *}}DW_TAG_base_type
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; CHECK-NEXT: DW_AT_name{{.*}} = "int"
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; CHECK: DW_TAG_structure_type
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; CHECK-NEXT: DW_AT_name{{.*}}"y_impl<int>"
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; CHECK-NOT: NULL
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; CHECK: DW_TAG_template_type_parameter
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; CHECK: DW_AT_name{{.*}}"func<3, &glbl, y_impl, nullptr, 1, 2>"
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; CHECK-NOT: NULL
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; CHECK: DW_TAG_template_value_parameter
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; CHECK-NEXT: DW_AT_type{{.*}}=> {[[INT]]}
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; CHECK-NEXT: DW_AT_name{{.*}}= "x"
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; CHECK-NEXT: DW_AT_const_value [DW_FORM_sdata]{{.*}}(3)
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; CHECK: DW_TAG_template_value_parameter
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; CHECK-NEXT: DW_AT_type{{.*}}=> {[[INTPTR:0x[0-9a-f]*]]}
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; The address of the global 'glbl', followed by DW_OP_stack_value (9f), to use
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; the value immediately, rather than indirecting through the address.
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; CHECK-NEXT: DW_AT_location [DW_FORM_exprloc]{{ *}}(<0xa> 03 00 00 00 00 00 00 00 00 9f )
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; CHECK-NOT: NULL
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; CHECK: DW_TAG_GNU_template_template_param
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; CHECK-NEXT: DW_AT_name{{.*}}= "y"
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; CHECK-NEXT: DW_AT_GNU_template_name{{.*}}= "y_impl"
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; CHECK-NOT: NULL
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; CHECK: DW_TAG_template_value_parameter
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; CHECK-NEXT: DW_AT_type{{.*}}=> {[[NULLPTR:0x[0-9a-f]*]]}
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; CHECK-NEXT: DW_AT_name{{.*}}= "n"
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; CHECK-NEXT: DW_AT_const_value [DW_FORM_udata]{{.*}}(0)
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; CHECK: DW_TAG_GNU_template_parameter_pack
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; CHECK-NOT: NULL
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; CHECK: DW_TAG_template_value_parameter
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; CHECK-NEXT: DW_AT_type{{.*}}=> {[[INT]]}
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; CHECK-NEXT: DW_AT_const_value [DW_FORM_sdata]{{.*}}(1)
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; CHECK-NOT: NULL
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; CHECK: DW_TAG_template_value_parameter
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; CHECK-NEXT: DW_AT_type{{.*}}=> {[[INT]]}
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; CHECK-NEXT: DW_AT_const_value [DW_FORM_sdata]{{.*}}(2)
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; CHECK: [[INTPTR]]:{{ *}}DW_TAG_pointer_type
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; CHECK-NEXT: DW_AT_type{{.*}} => {[[INT]]}
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; CHECK: [[NULLPTR]]:{{ *}}DW_TAG_unspecified_type
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; CHECK-NEXT: DW_AT_name{{.*}}= "decltype(nullptr)"
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%"struct.y_impl<int>::nested" = type { i8 }
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@glbl = global i32 0, align 4, !dbg !31
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@n = global %"struct.y_impl<int>::nested" zeroinitializer, align 1, !dbg !32
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@llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__sub_I_template.cpp, i8* null }]
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define internal void @__cxx_global_var_init() section ".text.startup" !dbg !10 {
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entry:
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%call = call i32 @_Z4funcILi3EXadL_Z4glblEE6y_implLDn0EJLi1ELi2EEEiv(), !dbg !36
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store i32 %call, i32* @glbl, align 4, !dbg !36
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ret void, !dbg !36
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}
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; Function Attrs: nounwind uwtable
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define linkonce_odr i32 @_Z4funcILi3EXadL_Z4glblEE6y_implLDn0EJLi1ELi2EEEiv() #0 !dbg !14 {
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entry:
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ret i32 3, !dbg !37
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}
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define internal void @_GLOBAL__sub_I_template.cpp() section ".text.startup" {
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entry:
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call void @__cxx_global_var_init(), !dbg !38
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ret void
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}
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attributes #0 = { nounwind uwtable "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" "unsafe-fp-math"="false" "use-soft-float"="false" }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!33, !34}
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!llvm.ident = !{!35}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 (trunk 224394) (llvm/trunk 224384)", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !3, globals: !30, imports: !2)
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!1 = !DIFile(filename: "template.cpp", directory: "/tmp/dbginfo")
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!2 = !{}
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!3 = !{!4, !8}
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!4 = !DICompositeType(tag: DW_TAG_structure_type, name: "y_impl<int>", line: 2, size: 8, align: 8, file: !1, elements: !2, templateParams: !5, identifier: "_ZTS6y_implIiE")
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!5 = !{!6}
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!6 = !DITemplateTypeParameter(type: !7)
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!7 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!8 = !DICompositeType(tag: DW_TAG_structure_type, name: "nested", line: 2, size: 8, align: 8, file: !1, scope: !4, elements: !2, identifier: "_ZTSN6y_implIiE6nestedE")
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!10 = distinct !DISubprogram(name: "__cxx_global_var_init", line: 3, isLocal: true, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 3, file: !1, scope: !11, type: !12, variables: !2)
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!11 = !DIFile(filename: "template.cpp", directory: "/tmp/dbginfo")
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!12 = !DISubroutineType(types: !13)
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!13 = !{null}
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!14 = distinct !DISubprogram(name: "func<3, &glbl, y_impl, nullptr, 1, 2>", linkageName: "_Z4funcILi3EXadL_Z4glblEE6y_implLDn0EJLi1ELi2EEEiv", line: 1, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 1, file: !1, scope: !11, type: !15, templateParams: !17, variables: !2)
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!15 = !DISubroutineType(types: !16)
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!16 = !{!7}
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!17 = !{!18, !19, !21, !22, !24}
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!18 = !DITemplateValueParameter(tag: DW_TAG_template_value_parameter, name: "x", type: !7, value: i32 3)
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!19 = !DITemplateValueParameter(tag: DW_TAG_template_value_parameter, type: !20, value: i32* @glbl)
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!20 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !7)
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!21 = !DITemplateValueParameter(tag: DW_TAG_GNU_template_template_param, name: "y", type: null, value: !"y_impl")
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!22 = !DITemplateValueParameter(tag: DW_TAG_template_value_parameter, name: "n", type: !23, value: i8 0)
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!23 = !DIBasicType(tag: DW_TAG_unspecified_type, name: "decltype(nullptr)")
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!24 = !DITemplateValueParameter(tag: DW_TAG_GNU_template_parameter_pack, name: "z", type: null, value: !25)
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!25 = !{!26, !27}
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!26 = !DITemplateValueParameter(tag: DW_TAG_template_value_parameter, type: !7, value: i32 1)
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!27 = !DITemplateValueParameter(tag: DW_TAG_template_value_parameter, type: !7, value: i32 2)
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!28 = distinct !DISubprogram(name: "", linkageName: "_GLOBAL__sub_I_template.cpp", isLocal: true, isDefinition: true, flags: DIFlagArtificial, isOptimized: false, unit: !0, file: !1, scope: !11, type: !29, variables: !2)
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!29 = !DISubroutineType(types: !2)
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!30 = !{!31, !32}
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!31 = !DIGlobalVariable(name: "glbl", line: 3, isLocal: false, isDefinition: true, scope: null, file: !11, type: !7)
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!32 = !DIGlobalVariable(name: "n", line: 4, isLocal: false, isDefinition: true, scope: null, file: !11, type: !8)
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!33 = !{i32 2, !"Dwarf Version", i32 4}
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!34 = !{i32 2, !"Debug Info Version", i32 3}
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!35 = !{!"clang version 3.6.0 (trunk 224394) (llvm/trunk 224384)"}
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!36 = !DILocation(line: 3, column: 12, scope: !10)
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!37 = !DILocation(line: 1, column: 96, scope: !14)
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!38 = !DILocation(line: 0, scope: !28)
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