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llvm-project/llvm/test/DebugInfo/ARM/bitfield.ll

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Debug Info: Fix a bug in the DW_AT_bit_offset calculation that would result in negative offsets and attempt a better job at documenting the algorithm. rdar://21082998 llvm-svn: 240853
2015-06-27 07:31:27 +08:00
; RUN: %llc_dwarf -O0 -filetype=obj -o %t.o %s
; RUN: llvm-dwarfdump -debug-dump=info %t.o | FileCheck %s
; REQUIRES: object-emission
;
; Generated from:
; struct {
; char c;
; int : 4;
; int reserved : 28;
; } a;
;
; CHECK: DW_TAG_member
; CHECK: DW_AT_name {{.*}} "reserved"
; CHECK: DW_AT_byte_size {{.*}} (0x04)
; CHECK: DW_AT_bit_size {{.*}} (0x1c)
; CHECK: DW_AT_bit_offset {{.*}} (0x18)
Revert "Debug Info: One more bitfield bugfix. While yesterday's r240853 fixed" This reverts commit 240890. Breaking the gdb buildbot. llvm-svn: 240893
2015-06-28 05:55:00 +08:00
; CHECK: DW_AT_data_member_location {{.*}}00
Debug Info: Fix a bug in the DW_AT_bit_offset calculation that would result in negative offsets and attempt a better job at documenting the algorithm. rdar://21082998 llvm-svn: 240853
2015-06-27 07:31:27 +08:00
target datalayout = "e-m:o-p:32:32-f64:32:64-v64:32:64-v128:32:128-a:0:32-n32-S32"
target triple = "thumbv7-apple-ios"
%struct.anon = type { i8, [5 x i8] }
@a = common global %struct.anon zeroinitializer, align 1
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!11, !12, !13, !14, !15}
!llvm.ident = !{!16}
[PR27284] Reverse the ownership between DICompileUnit and DISubprogram. Currently each Function points to a DISubprogram and DISubprogram has a scope field. For member functions the scope is a DICompositeType. DIScopes point to the DICompileUnit to facilitate type uniquing. Distinct DISubprograms (with isDefinition: true) are not part of the type hierarchy and cannot be uniqued. This change removes the subprograms list from DICompileUnit and instead adds a pointer to the owning compile unit to distinct DISubprograms. This would make it easy for ThinLTO to strip unneeded DISubprograms and their transitively referenced debug info. Motivation ---------- Materializing DISubprograms is currently the most expensive operation when doing a ThinLTO build of clang. We want the DISubprogram to be stored in a separate Bitcode block (or the same block as the function body) so we can avoid having to expensively deserialize all DISubprograms together with the global metadata. If a function has been inlined into another subprogram we need to store a reference the block containing the inlined subprogram. Attached to https://llvm.org/bugs/show_bug.cgi?id=27284 is a python script that updates LLVM IR testcases to the new format. http://reviews.llvm.org/D19034 <rdar://problem/25256815> llvm-svn: 266446
2016-04-15 23:57:41 +08:00
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0 (trunk 240548) (llvm/trunk 240554)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !3, imports: !2)
Debug Info: Fix a bug in the DW_AT_bit_offset calculation that would result in negative offsets and attempt a better job at documenting the algorithm. rdar://21082998 llvm-svn: 240853
2015-06-27 07:31:27 +08:00
!1 = !DIFile(filename: "test.i", directory: "/")
!2 = !{}
!3 = !{!4}
!4 = !DIGlobalVariable(name: "a", scope: !0, file: !1, line: 5, type: !5, isLocal: false, isDefinition: true, variable: %struct.anon* @a)
!5 = !DICompositeType(tag: DW_TAG_structure_type, file: !1, line: 1, size: 48, align: 8, elements: !6)
!6 = !{!7, !9}
!7 = !DIDerivedType(tag: DW_TAG_member, name: "c", scope: !5, file: !1, line: 2, baseType: !8, size: 8, align: 8)
!8 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
!9 = !DIDerivedType(tag: DW_TAG_member, name: "reserved", scope: !5, file: !1, line: 4, baseType: !10, size: 28, align: 32, offset: 12)
!10 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!11 = !{i32 2, !"Dwarf Version", i32 2}
!12 = !{i32 2, !"Debug Info Version", i32 3}
!13 = !{i32 1, !"wchar_size", i32 4}
!14 = !{i32 1, !"min_enum_size", i32 4}
!15 = !{i32 1, !"PIC Level", i32 2}
!16 = !{!"clang version 3.7.0 (trunk 240548) (llvm/trunk 240554)"}