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llvm-project/llvm/test/DebugInfo/X86/static_member_array.ll

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llvm-dwarfdump: Make -brief the default and add a -verbose option instead. Differential Revision: https://reviews.llvm.org/D37717 llvm-svn: 312972
2017-09-12 07:05:20 +08:00
; RUN: %llc_dwarf %s -filetype=obj -o - | llvm-dwarfdump -v -debug-info - | FileCheck %s
Emit the DW_AT_type for a C++ static member definition if it is more specific than the one in its DW_AT_specification. If a static member is an array, the translation unit containing the member definition may have a more specific type (including its length) than TUs only seeing the class declaration. This patch adds a DW_AT_type to the member's DW_TAG_variable in addition to the DW_AT_specification in these cases. The member type in the DW_AT_specification still shows the more generic type (without the length) to avoid defeating type uniquing. The DWARF standard discourages “duplicating” a DW_AT_type in a member variable definition but doesn’t explicitly forbid it. Having the more specific type (with the array length) available is what allows the debugger to print the contents of a static array member variable. https://reviews.llvm.org/D26368 rdar://problem/28706946 llvm-svn: 286302
2016-11-09 06:11:38 +08:00
; Generated from:
;
; struct A {
; static int fully_specified;
; static int smem[];
; };
;
; int A::fully_specified;
; int A::smem[] = { 0, 1, 2, 3 };
;
; CHECK: DW_TAG_variable
; CHECK-NEXT: DW_AT_specification{{.*}}"fully_specified"
; CHECK-NOT: DW_AT_type
; CHECK: DW_TAG_structure_type
; CHECK: DW_TAG_member
; CHECK: DW_TAG_member
; CHECK-NEXT: DW_AT_name {{.*}} "smem"
; CHECK-NEXT: DW_AT_type {{.*}} {0x[[GENERIC:[0-9]+]]}
;
; CHECK: 0x[[GENERIC]]: DW_TAG_array_type
; CHECK-NOT: DW_TAG
; CHECK-NOT: NULL
; CHECK: DW_TAG_subrange_type
; CHECK-NOT: DW_AT_count
; CHECK: NULL
;
; CHECK: DW_TAG_variable
; CHECK-NEXT: DW_AT_specification {{.*}}"smem"
; CHECK-NEXT: DW_AT_type {{.*}} {0x[[SPECIFIC:[0-9]+]]}
;
; CHECK: 0x[[SPECIFIC]]: DW_TAG_array_type
; CHECK-NOT: DW_TAG
; CHECK-NOT: NULL
; CHECK: DW_TAG_subrange_type
; CHECK-NOT: DW_TAG
; CHECK-NOT: NULL
; CHECK: DW_AT_count {{.*}} (0x04)
source_filename = "static_member_array.cpp"
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.12.0"
@_ZN1A15fully_specifiedE = global i32 0, align 4, !dbg !0
Renumber testcase metadata nodes after r290153. This patch renumbers the metadata nodes in debug info testcases after https://reviews.llvm.org/D26769. This is a separate patch because it causes so much churn. This was implemented with a python script that pipes the testcases through llvm-as - | llvm-dis - and then goes through the original and new output side-by side to insert all comments at a close-enough location. Differential Revision: https://reviews.llvm.org/D27765 llvm-svn: 290292
2016-12-22 08:45:21 +08:00
@_ZN1A4smemE = global [4 x i32] [i32 0, i32 1, i32 2, i32 3], align 16, !dbg !6
Emit the DW_AT_type for a C++ static member definition if it is more specific than the one in its DW_AT_specification. If a static member is an array, the translation unit containing the member definition may have a more specific type (including its length) than TUs only seeing the class declaration. This patch adds a DW_AT_type to the member's DW_TAG_variable in addition to the DW_AT_specification in these cases. The member type in the DW_AT_specification still shows the more generic type (without the length) to avoid defeating type uniquing. The DWARF standard discourages “duplicating” a DW_AT_type in a member variable definition but doesn’t explicitly forbid it. Having the more specific type (with the array length) available is what allows the debugger to print the contents of a static array member variable. https://reviews.llvm.org/D26368 rdar://problem/28706946 llvm-svn: 286302
2016-11-09 06:11:38 +08:00
Renumber testcase metadata nodes after r290153. This patch renumbers the metadata nodes in debug info testcases after https://reviews.llvm.org/D26769. This is a separate patch because it causes so much churn. This was implemented with a python script that pipes the testcases through llvm-as - | llvm-dis - and then goes through the original and new output side-by side to insert all comments at a close-enough location. Differential Revision: https://reviews.llvm.org/D27765 llvm-svn: 290292
2016-12-22 08:45:21 +08:00
!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!19, !20, !21}
!llvm.ident = !{!22}
Canonicalize the representation of empty an expression in DIGlobalVariableExpression 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
2017-08-31 02:06:51 +08:00
!0 = distinct !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
Renumber testcase metadata nodes after r290153. This patch renumbers the metadata nodes in debug info testcases after https://reviews.llvm.org/D26769. This is a separate patch because it causes so much churn. This was implemented with a python script that pipes the testcases through llvm-as - | llvm-dis - and then goes through the original and new output side-by side to insert all comments at a close-enough location. Differential Revision: https://reviews.llvm.org/D27765 llvm-svn: 290292
2016-12-22 08:45:21 +08:00
!1 = !DIGlobalVariable(name: "fully_specified", linkageName: "_ZN1A15fully_specifiedE", scope: !2, file: !3, line: 7, type: !9, isLocal: false, isDefinition: true, declaration: !15)
!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang version 4.0.0 (trunk 286129) (llvm/trunk 286128)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
!3 = !DIFile(filename: "static_member_array.cpp", directory: "/Volumes/Data/radar/28706946")
!4 = !{}
!5 = !{!0, !6}
Canonicalize the representation of empty an expression in DIGlobalVariableExpression 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
2017-08-31 02:06:51 +08:00
!6 = distinct !DIGlobalVariableExpression(var: !7, expr: !DIExpression())
Renumber testcase metadata nodes after r290153. This patch renumbers the metadata nodes in debug info testcases after https://reviews.llvm.org/D26769. This is a separate patch because it causes so much churn. This was implemented with a python script that pipes the testcases through llvm-as - | llvm-dis - and then goes through the original and new output side-by side to insert all comments at a close-enough location. Differential Revision: https://reviews.llvm.org/D27765 llvm-svn: 290292
2016-12-22 08:45:21 +08:00
!7 = !DIGlobalVariable(name: "smem", linkageName: "_ZN1A4smemE", scope: !2, file: !3, line: 8, type: !8, isLocal: false, isDefinition: true, declaration: !12)
!8 = !DICompositeType(tag: DW_TAG_array_type, baseType: !9, size: 128, elements: !10)
!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!10 = !{!11}
!11 = !DISubrange(count: 4)
!12 = !DIDerivedType(tag: DW_TAG_member, name: "smem", scope: !13, file: !3, line: 4, baseType: !16, flags: DIFlagStaticMember)
!13 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "A", file: !3, line: 1, size: 8, elements: !14, identifier: "_ZTS1A")
!14 = !{!15, !12}
!15 = !DIDerivedType(tag: DW_TAG_member, name: "fully_specified", scope: !13, file: !3, line: 3, baseType: !9, flags: DIFlagStaticMember)
!16 = !DICompositeType(tag: DW_TAG_array_type, baseType: !9, elements: !17)
!17 = !{!18}
!18 = !DISubrange(count: -1)
!19 = !{i32 2, !"Dwarf Version", i32 4}
!20 = !{i32 2, !"Debug Info Version", i32 3}
!21 = !{i32 1, !"PIC Level", i32 2}
!22 = !{!"clang version 4.0.0 (trunk 286129) (llvm/trunk 286128)"}
Emit the DW_AT_type for a C++ static member definition if it is more specific than the one in its DW_AT_specification. If a static member is an array, the translation unit containing the member definition may have a more specific type (including its length) than TUs only seeing the class declaration. This patch adds a DW_AT_type to the member's DW_TAG_variable in addition to the DW_AT_specification in these cases. The member type in the DW_AT_specification still shows the more generic type (without the length) to avoid defeating type uniquing. The DWARF standard discourages “duplicating” a DW_AT_type in a member variable definition but doesn’t explicitly forbid it. Having the more specific type (with the array length) available is what allows the debugger to print the contents of a static array member variable. https://reviews.llvm.org/D26368 rdar://problem/28706946 llvm-svn: 286302
2016-11-09 06:11:38 +08:00