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llvm-mirror/test/DebugInfo/Generic/namespace.ll
Peter Collingbourne a9fbb2813b DebugInfo: New metadata representation for global variables.
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
2016-09-13 01:12:59 +00:00

365 lines
16 KiB
LLVM

; REQUIRES: object-emission
; RUN: %llc_dwarf -O0 -filetype=obj -dwarf-linkage-names=All < %s | llvm-dwarfdump - | FileCheck %s
; CHECK: debug_info contents
; CHECK: [[NS1:0x[0-9a-f]*]]:{{ *}}DW_TAG_namespace
; CHECK-NEXT: DW_AT_name{{.*}} = "A"
; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F1:".*debug-info-namespace.cpp"]])
; CHECK-NEXT: DW_AT_decl_line{{.*}}(5)
; CHECK-NOT: NULL
; CHECK: [[NS2:0x[0-9a-f]*]]:{{ *}}DW_TAG_namespace
; CHECK-NEXT: DW_AT_name{{.*}} = "B"
; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2:".*foo.cpp"]])
; CHECK-NEXT: DW_AT_decl_line{{.*}}(1)
; CHECK-NOT: NULL
; CHECK: [[I:0x[0-9a-f]*]]:{{ *}}DW_TAG_variable
; CHECK-NEXT: DW_AT_name{{.*}}= "i"
; CHECK: [[VAR_FWD:0x[0-9a-f]*]]:{{ *}}DW_TAG_variable
; CHECK-NEXT: DW_AT_name{{.*}}= "var_fwd"
; CHECK-NOT: NULL
; CHECK: [[FOO:0x[0-9a-f]*]]:{{ *}}DW_TAG_structure_type
; CHECK-NEXT: DW_AT_name{{.*}}= "foo"
; CHECK-NEXT: DW_AT_declaration
; CHECK-NOT: NULL
; CHECK: [[BAR:0x[0-9a-f]*]]:{{ *}}DW_TAG_structure_type
; CHECK-NEXT: DW_AT_name{{.*}}= "bar"
; CHECK: [[FUNC1:.*]]: DW_TAG_subprogram
; CHECK-NOT: DW_TAG
; CHECK: DW_AT_MIPS_linkage_name
; CHECK-NOT: DW_TAG
; CHECK: DW_AT_name{{.*}}= "f1"
; CHECK: [[BAZ:0x[0-9a-f]*]]:{{.*}}DW_TAG_typedef
; CHECK-NOT: DW_TAG
; CHECK: DW_AT_name{{.*}}= "baz"
; CHECK: [[VAR_DECL:0x[0-9a-f]*]]:{{.*}}DW_TAG_variable
; CHECK-NOT: DW_TAG
; CHECK: DW_AT_name{{.*}}= "var_decl"
; CHECK-NOT: DW_TAG
; CHECK: DW_AT_declaration
; CHECK: [[FUNC_DECL:0x[0-9a-f]*]]:{{.*}}DW_TAG_subprogram
; CHECK-NOT: DW_TAG
; CHECK: DW_AT_name{{.*}}= "func_decl"
; CHECK-NOT: DW_TAG
; CHECK: DW_AT_declaration
; CHECK: [[FUNC_FWD:0x[0-9a-f]*]]:{{.*}}DW_TAG_subprogram
; CHECK-NOT: DW_TAG
; CHECK: DW_AT_name{{.*}}= "func_fwd"
; CHECK-NOT: DW_AT_declaration
; CHECK: DW_TAG_subprogram
; CHECK-NOT: DW_TAG
; CHECK: DW_AT_MIPS_linkage_name
; CHECK-NOT: DW_TAG
; CHECK: DW_AT_name{{.*}}= "f1"
; CHECK: NULL
; CHECK-NOT: NULL
; CHECK: DW_TAG_imported_module
; This is a bug, it should be in F2 but it inherits the file from its
; enclosing scope
; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F1]])
; CHECK-NEXT: DW_AT_decl_line{{.*}}(15)
; CHECK-NEXT: DW_AT_import{{.*}}=> {[[NS2]]})
; CHECK: NULL
; CHECK-NOT: NULL
; CHECK: DW_TAG_imported_module
; Same bug as above, this should be F2, not F1
; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F1]])
; CHECK-NEXT: DW_AT_decl_line{{.*}}(18)
; CHECK-NEXT: DW_AT_import{{.*}}=> {[[NS1]]})
; CHECK-NOT: NULL
; CHECK: DW_TAG_subprogram
; CHECK-NOT: DW_TAG
; CHECK: DW_AT_MIPS_linkage_name
; CHECK-NOT: DW_TAG
; CHECK: DW_AT_name{{.*}}= "func"
; CHECK-NOT: NULL
; CHECK: DW_TAG_imported_module
; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
; CHECK-NEXT: DW_AT_decl_line{{.*}}(26)
; CHECK-NEXT: DW_AT_import{{.*}}=> {[[NS1]]})
; CHECK-NOT: NULL
; CHECK: DW_TAG_imported_declaration
; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
; CHECK-NEXT: DW_AT_decl_line{{.*}}(27)
; CHECK-NEXT: DW_AT_import{{.*}}=> {[[FOO]]})
; CHECK-NOT: NULL
; CHECK: DW_TAG_imported_declaration
; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
; CHECK-NEXT: DW_AT_decl_line{{.*}}(28)
; CHECK-NEXT: DW_AT_import{{.*}}=> {[[BAR]]})
; CHECK-NOT: NULL
; CHECK: DW_TAG_imported_declaration
; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
; CHECK-NEXT: DW_AT_decl_line{{.*}}(29)
; CHECK-NEXT: DW_AT_import{{.*}}=> {[[FUNC1]]})
; CHECK-NOT: NULL
; CHECK: DW_TAG_imported_declaration
; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
; CHECK-NEXT: DW_AT_decl_line{{.*}}(30)
; CHECK-NEXT: DW_AT_import{{.*}}=> {[[I]]})
; CHECK-NOT: NULL
; CHECK: DW_TAG_imported_declaration
; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
; CHECK-NEXT: DW_AT_decl_line{{.*}}(31)
; CHECK-NEXT: DW_AT_import{{.*}}=> {[[BAZ]]})
; CHECK-NOT: NULL
; CHECK: [[X:0x[0-9a-f]*]]:{{ *}}DW_TAG_imported_declaration
; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
; CHECK-NEXT: DW_AT_decl_line{{.*}}(32)
; CHECK-NEXT: DW_AT_import{{.*}}=> {[[NS1]]})
; CHECK-NEXT: DW_AT_name{{.*}}"X"
; CHECK-NOT: NULL
; CHECK: DW_TAG_imported_declaration
; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
; CHECK-NEXT: DW_AT_decl_line{{.*}}(33)
; CHECK-NEXT: DW_AT_import{{.*}}=> {[[X]]})
; CHECK-NEXT: DW_AT_name{{.*}}"Y"
; CHECK-NOT: NULL
; CHECK: DW_TAG_imported_declaration
; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
; CHECK-NEXT: DW_AT_decl_line{{.*}}(34)
; CHECK-NEXT: DW_AT_import{{.*}}=> {[[VAR_DECL]]})
; CHECK: DW_TAG_imported_declaration
; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
; CHECK-NEXT: DW_AT_decl_line{{.*}}(35)
; CHECK-NEXT: DW_AT_import{{.*}}=> {[[FUNC_DECL]]})
; CHECK: DW_TAG_imported_declaration
; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
; CHECK-NEXT: DW_AT_decl_line{{.*}}(36)
; CHECK-NEXT: DW_AT_import{{.*}}=> {[[VAR_FWD]]})
; CHECK: DW_TAG_imported_declaration
; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
; CHECK-NEXT: DW_AT_decl_line{{.*}}(37)
; CHECK-NEXT: DW_AT_import{{.*}}=> {[[FUNC_FWD]]})
; CHECK: DW_TAG_lexical_block
; CHECK-NOT: NULL
; CHECK: DW_TAG_imported_module
; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
; CHECK-NEXT: DW_AT_decl_line{{.*}}(23)
; CHECK-NEXT: DW_AT_import{{.*}}=>
; CHECK: NULL
; CHECK: NULL
; CHECK: NULL
; IR generated from clang/test/CodeGenCXX/debug-info-namespace.cpp, file paths
; changed to protect the guilty. The C++ source code is:
; // RUN...
; // RUN...
; // RUN...
;
; namespace A {
; #line 1 "foo.cpp"
; namespace B {
; extern int i;
; int f1() { return 0; }
; void f1(int) { }
; struct foo;
; struct bar { };
; typedef bar baz;
; extern int var_decl;
; void func_decl(void);
; extern int var_fwd;
; void func_fwd(void);
; }
; }
; namespace A {
; using namespace B;
; }
;
; using namespace A;
; namespace E = A;
; int B::i = f1();
; int func(bool b) {
; if (b) {
; using namespace A::B;
; return i;
; }
; using namespace A;
; using B::foo;
; using B::bar;
; using B::f1;
; using B::i;
; using B::baz;
; namespace X = A;
; namespace Y = X;
; using B::var_decl;
; using B::func_decl;
; using B::var_fwd;
; using B::func_fwd;
; return i + X::B::i + Y::B::i;
; }
;
; namespace A {
; using B::i;
; namespace B {
; int var_fwd = i;
; }
; }
; void B::func_fwd() {}
@_ZN1A1B1iE = global i32 0, align 4, !dbg !31
@_ZN1A1B7var_fwdE = global i32 0, align 4, !dbg !32
@llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__sub_I_debug_info_namespace.cpp, i8* null }]
; Function Attrs: nounwind ssp uwtable
define i32 @_ZN1A1B2f1Ev() #0 !dbg !10 {
entry:
ret i32 0, !dbg !60
}
; Function Attrs: nounwind ssp uwtable
define void @_ZN1A1B2f1Ei(i32) #0 !dbg !14 {
entry:
%.addr = alloca i32, align 4
store i32 %0, i32* %.addr, align 4
call void @llvm.dbg.declare(metadata i32* %.addr, metadata !61, metadata !62), !dbg !63
ret void, !dbg !64
}
; Function Attrs: nounwind readnone
declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
define internal void @__cxx_global_var_init() section "__TEXT,__StaticInit,regular,pure_instructions" !dbg !17 {
entry:
%call = call i32 @_ZN1A1B2f1Ev(), !dbg !65
store i32 %call, i32* @_ZN1A1B1iE, align 4, !dbg !65
ret void, !dbg !65
}
; Function Attrs: nounwind ssp uwtable
define i32 @_Z4funcb(i1 zeroext %b) #0 !dbg !21 {
entry:
%retval = alloca i32, align 4
%b.addr = alloca i8, align 1
%frombool = zext i1 %b to i8
store i8 %frombool, i8* %b.addr, align 1
call void @llvm.dbg.declare(metadata i8* %b.addr, metadata !66, metadata !62), !dbg !67
%0 = load i8, i8* %b.addr, align 1, !dbg !68
%tobool = trunc i8 %0 to i1, !dbg !68
br i1 %tobool, label %if.then, label %if.end, !dbg !68
if.then: ; preds = %entry
%1 = load i32, i32* @_ZN1A1B1iE, align 4, !dbg !69
store i32 %1, i32* %retval, !dbg !69
br label %return, !dbg !69
if.end: ; preds = %entry
%2 = load i32, i32* @_ZN1A1B1iE, align 4, !dbg !70
%3 = load i32, i32* @_ZN1A1B1iE, align 4, !dbg !70
%add = add nsw i32 %2, %3, !dbg !70
%4 = load i32, i32* @_ZN1A1B1iE, align 4, !dbg !70
%add1 = add nsw i32 %add, %4, !dbg !70
store i32 %add1, i32* %retval, !dbg !70
br label %return, !dbg !70
return: ; preds = %if.end, %if.then
%5 = load i32, i32* %retval, !dbg !71
ret i32 %5, !dbg !71
}
define internal void @__cxx_global_var_init1() section "__TEXT,__StaticInit,regular,pure_instructions" !dbg !25 {
entry:
%0 = load i32, i32* @_ZN1A1B1iE, align 4, !dbg !72
store i32 %0, i32* @_ZN1A1B7var_fwdE, align 4, !dbg !72
ret void, !dbg !72
}
; Function Attrs: nounwind ssp uwtable
define void @_ZN1A1B8func_fwdEv() #0 !dbg !26 {
entry:
ret void, !dbg !73
}
define internal void @_GLOBAL__sub_I_debug_info_namespace.cpp() section "__TEXT,__StaticInit,regular,pure_instructions" {
entry:
call void @__cxx_global_var_init(), !dbg !74
call void @__cxx_global_var_init1(), !dbg !74
ret void, !dbg !74
}
attributes #0 = { nounwind ssp 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" }
attributes #1 = { nounwind readnone }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!57, !58}
!llvm.ident = !{!59}
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !3, globals: !30, imports: !33)
!1 = !DIFile(filename: "debug-info-namespace.cpp", directory: "/tmp")
!2 = !{}
!3 = !{!4, !8}
!4 = !DICompositeType(tag: DW_TAG_structure_type, name: "foo", line: 5, flags: DIFlagFwdDecl, file: !5, scope: !6, identifier: "_ZTSN1A1B3fooE")
!5 = !DIFile(filename: "foo.cpp", directory: "/tmp")
!6 = !DINamespace(name: "B", line: 1, file: !5, scope: !7)
!7 = !DINamespace(name: "A", line: 5, file: !1, scope: null)
!8 = !DICompositeType(tag: DW_TAG_structure_type, name: "bar", line: 6, size: 8, align: 8, file: !5, scope: !6, elements: !2, identifier: "_ZTSN1A1B3barE")
!10 = distinct !DISubprogram(name: "f1", linkageName: "_ZN1A1B2f1Ev", line: 3, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 3, file: !5, scope: !6, type: !11, variables: !2)
!11 = !DISubroutineType(types: !12)
!12 = !{!13}
!13 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!14 = distinct !DISubprogram(name: "f1", linkageName: "_ZN1A1B2f1Ei", line: 4, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 4, file: !5, scope: !6, type: !15, variables: !2)
!15 = !DISubroutineType(types: !16)
!16 = !{null, !13}
!17 = distinct !DISubprogram(name: "__cxx_global_var_init", line: 20, isLocal: true, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 20, file: !5, scope: !18, type: !19, variables: !2)
!18 = !DIFile(filename: "foo.cpp", directory: "/tmp")
!19 = !DISubroutineType(types: !20)
!20 = !{null}
!21 = distinct !DISubprogram(name: "func", linkageName: "_Z4funcb", line: 21, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 21, file: !5, scope: !18, type: !22, variables: !2)
!22 = !DISubroutineType(types: !23)
!23 = !{!13, !24}
!24 = !DIBasicType(tag: DW_TAG_base_type, name: "bool", size: 8, align: 8, encoding: DW_ATE_boolean)
!25 = distinct !DISubprogram(name: "__cxx_global_var_init1", line: 44, isLocal: true, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 44, file: !5, scope: !18, type: !19, variables: !2)
!26 = distinct !DISubprogram(name: "func_fwd", linkageName: "_ZN1A1B8func_fwdEv", line: 47, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 47, file: !5, scope: !6, type: !19, variables: !2)
!27 = distinct !DISubprogram(name: "", linkageName: "_GLOBAL__sub_I_debug_info_namespace.cpp", isLocal: true, isDefinition: true, flags: DIFlagArtificial, isOptimized: false, unit: !0, file: !1, scope: !28, type: !29, variables: !2)
!28 = !DIFile(filename: "debug-info-namespace.cpp", directory: "/tmp")
!29 = !DISubroutineType(types: !2)
!30 = !{!31, !32}
!31 = !DIGlobalVariable(name: "i", linkageName: "_ZN1A1B1iE", line: 20, isLocal: false, isDefinition: true, scope: !6, file: !18, type: !13)
!32 = !DIGlobalVariable(name: "var_fwd", linkageName: "_ZN1A1B7var_fwdE", line: 44, isLocal: false, isDefinition: true, scope: !6, file: !18, type: !13)
!33 = !{!34, !35, !36, !37, !40, !41, !42, !43, !44, !45, !47, !48, !49, !51, !54, !55, !56}
!34 = !DIImportedEntity(tag: DW_TAG_imported_module, line: 15, scope: !7, entity: !6)
!35 = !DIImportedEntity(tag: DW_TAG_imported_module, line: 18, scope: !0, entity: !7)
!36 = !DIImportedEntity(tag: DW_TAG_imported_declaration, line: 19, name: "E", scope: !0, entity: !7)
!37 = !DIImportedEntity(tag: DW_TAG_imported_module, line: 23, scope: !38, entity: !6)
!38 = distinct !DILexicalBlock(line: 22, column: 10, file: !5, scope: !39)
!39 = distinct !DILexicalBlock(line: 22, column: 7, file: !5, scope: !21)
!40 = !DIImportedEntity(tag: DW_TAG_imported_module, line: 26, scope: !21, entity: !7)
!41 = !DIImportedEntity(tag: DW_TAG_imported_declaration, line: 27, scope: !21, entity: !4)
!42 = !DIImportedEntity(tag: DW_TAG_imported_declaration, line: 28, scope: !21, entity: !8)
!43 = !DIImportedEntity(tag: DW_TAG_imported_declaration, line: 29, scope: !21, entity: !14)
!44 = !DIImportedEntity(tag: DW_TAG_imported_declaration, line: 30, scope: !21, entity: !31)
!45 = !DIImportedEntity(tag: DW_TAG_imported_declaration, line: 31, scope: !21, entity: !46)
!46 = !DIDerivedType(tag: DW_TAG_typedef, name: "baz", line: 7, file: !5, scope: !6, baseType: !8)
!47 = !DIImportedEntity(tag: DW_TAG_imported_declaration, line: 32, name: "X", scope: !21, entity: !7)
!48 = !DIImportedEntity(tag: DW_TAG_imported_declaration, line: 33, name: "Y", scope: !21, entity: !47)
!49 = !DIImportedEntity(tag: DW_TAG_imported_declaration, line: 34, scope: !21, entity: !50)
!50 = !DIGlobalVariable(name: "var_decl", linkageName: "_ZN1A1B8var_declE", line: 8, isLocal: false, isDefinition: false, scope: !6, file: !18, type: !13)
!51 = !DIImportedEntity(tag: DW_TAG_imported_declaration, line: 35, scope: !21, entity: !52)
!52 = !DISubprogram(name: "func_decl", linkageName: "_ZN1A1B9func_declEv", line: 9, isLocal: false, isDefinition: false, flags: DIFlagPrototyped, isOptimized: false, file: !5, scope: !6, type: !19, variables: !53)
!53 = !{} ; previously: invalid DW_TAG_base_type
!54 = !DIImportedEntity(tag: DW_TAG_imported_declaration, line: 36, scope: !21, entity: !32)
!55 = !DIImportedEntity(tag: DW_TAG_imported_declaration, line: 37, scope: !21, entity: !26)
!56 = !DIImportedEntity(tag: DW_TAG_imported_declaration, line: 42, scope: !7, entity: !31)
!57 = !{i32 2, !"Dwarf Version", i32 2}
!58 = !{i32 2, !"Debug Info Version", i32 3}
!59 = !{!"clang version 3.6.0 "}
!60 = !DILocation(line: 3, column: 12, scope: !10)
!61 = !DILocalVariable(name: "", line: 4, arg: 1, scope: !14, file: !18, type: !13)
!62 = !DIExpression()
!63 = !DILocation(line: 4, column: 12, scope: !14)
!64 = !DILocation(line: 4, column: 16, scope: !14)
!65 = !DILocation(line: 20, column: 12, scope: !17)
!66 = !DILocalVariable(name: "b", line: 21, arg: 1, scope: !21, file: !18, type: !24)
!67 = !DILocation(line: 21, column: 15, scope: !21)
!68 = !DILocation(line: 22, column: 7, scope: !21)
!69 = !DILocation(line: 24, column: 5, scope: !38)
!70 = !DILocation(line: 38, column: 3, scope: !21)
!71 = !DILocation(line: 39, column: 1, scope: !21)
!72 = !DILocation(line: 44, column: 15, scope: !25)
!73 = !DILocation(line: 47, column: 21, scope: !26)
!74 = !DILocation(line: 0, scope: !75)
!75 = !DILexicalBlockFile(discriminator: 0, file: !5, scope: !27)