[llvm] r285181 - DebugInfo: support for DWARFv5 DW_AT_alignment attribute
David Blaikie via llvm-commits
llvm-commits at lists.llvm.org
Mon Oct 31 10:13:58 PDT 2016
Ping, was there an answer to these questions? (I think it did get reverted?
But it'd be good to have breadcrumbs here to mention which revision
reverted it & answer Adrian's question)
On Wed, Oct 26, 2016 at 9:30 AM Adrian Prantl via llvm-commits <
llvm-commits at lists.llvm.org> wrote:
> Sorry, I'm confused: I thought we decided against introducing a
> DIAlignment typedef?
>
> -- adrian
> > On Oct 26, 2016, at 1:55 AM, Victor Leschuk via llvm-commits <
> llvm-commits at lists.llvm.org> wrote:
> >
> > Author: vleschuk
> > Date: Wed Oct 26 03:55:27 2016
> > New Revision: 285181
> >
> > URL: http://llvm.org/viewvc/llvm-project?rev=285181&view=rev
> > Log:
> > DebugInfo: support for DWARFv5 DW_AT_alignment attribute
> >
> > * Assume that clang passes non-zero alignment value to DIBuilder
> > only in case when it was forced by C++11 'alignas', C11 '_Alignas'
> > or compiler attribute '__attribute__((aligned (N)))'.
> >
> > * Emit DW_AT_alignment if alignment is specified for type/object.
> >
> > Differential Revision: https://reviews.llvm.org/D24425
> >
> > Added:
> > llvm/trunk/test/DebugInfo/X86/align_c11.ll
> > llvm/trunk/test/DebugInfo/X86/align_cpp11.ll
> > llvm/trunk/test/DebugInfo/X86/align_objc.ll
> > Modified:
> > llvm/trunk/docs/SourceLevelDebugging.rst
> > llvm/trunk/include/llvm/IR/DebugInfoMetadata.h
> > llvm/trunk/include/llvm/Support/Dwarf.h
> > llvm/trunk/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
> > llvm/trunk/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
> > llvm/trunk/lib/Support/Dwarf.cpp
> > llvm/trunk/test/DebugInfo/X86/dwarf-public-names.ll
> >
> > Modified: llvm/trunk/docs/SourceLevelDebugging.rst
> > URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/docs/SourceLevelDebugging.rst?rev=285181&r1=285180&r2=285181&view=diff
> >
> ==============================================================================
> > --- llvm/trunk/docs/SourceLevelDebugging.rst (original)
> > +++ llvm/trunk/docs/SourceLevelDebugging.rst Wed Oct 26 03:55:27 2016
> > @@ -386,7 +386,7 @@ Given an integer global variable declare
> >
> > .. code-block:: c
> >
> > - int MyGlobal = 100;
> > + _Alignas(8) int MyGlobal = 100;
> >
> > a C/C++ front-end would generate the following descriptors:
> >
> > @@ -395,54 +395,59 @@ a C/C++ front-end would generate the fol
> > ;;
> > ;; Define the global itself.
> > ;;
> > - @MyGlobal = global i32 100, align 4
> > + @MyGlobal = global i32 100, align 8, !dbg !0
> >
> > ;;
> > ;; List of debug info of globals
> > ;;
> > - !llvm.dbg.cu = !{!0}
> > + !llvm.dbg.cu = !{!1}
> >
> > ;; Some unrelated metadata.
> > !llvm.module.flags = !{!6, !7}
> > + !llvm.ident = !{!8}
> > +
> > + ;; Define the global variable itself
> > + !0 = distinct !DIGlobalVariable(name: "MyGlobal", scope: !1, file:
> !2, line: 1, type: !5, isLocal: false, isDefinition: true, align: 64)
> >
> > ;; Define the compile unit.
> > - !0 = !DICompileUnit(language: DW_LANG_C99, file: !1,
> > - producer:
> > - "clang version 3.7.0 (trunk 231150) (llvm/trunk
> 231154)",
> > - isOptimized: false, runtimeVersion: 0,
> emissionKind: FullDebug,
> > - enums: !2, retainedTypes: !2, subprograms: !2,
> globals:
> > - !3, imports: !2)
> > + !1 = distinct !DICompileUnit(language: DW_LANG_C99, file: !2,
> > + producer: "clang version 4.0.0 (
> http://llvm.org/git/clang.git ae4deadbea242e8ea517eef662c30443f75bd086) (
> http://llvm.org/git/llvm.git 818b4c1539df3e51dc7e62c89ead4abfd348827d)",
> > + isOptimized: false, runtimeVersion: 0,
> emissionKind: FullDebug,
> > + enums: !3, globals: !4)
> >
> > ;;
> > ;; Define the file
> > ;;
> > - !1 = !DIFile(filename: "/dev/stdin",
> > + !2 = !DIFile(filename: "/dev/stdin",
> > directory: "/Users/dexonsmith/data/llvm/debug-info")
> >
> > ;; An empty array.
> > - !2 = !{}
> > + !3 = !{}
> >
> > ;; The Array of Global Variables
> > - !3 = !{!4}
> > -
> > - ;;
> > - ;; Define the global variable itself.
> > - ;;
> > - !4 = !DIGlobalVariable(name: "MyGlobal", scope: !0, file: !1, line: 1,
> > - type: !5, isLocal: false, isDefinition: true,
> > - variable: i32* @MyGlobal)
> > + !4 = !{!0}
> >
> > ;;
> > ;; Define the type
> > ;;
> > - !5 = !DIBasicType(name: "int", size: 32, align: 32, encoding:
> DW_ATE_signed)
> > + !5 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
> >
> > ;; Dwarf version to output.
> > - !6 = !{i32 2, !"Dwarf Version", i32 2}
> > + !6 = !{i32 2, !"Dwarf Version", i32 4}
> >
> > ;; Debug info schema version.
> > !7 = !{i32 2, !"Debug Info Version", i32 3}
> >
> > + ;; Compiler identification
> > + !8 = !{!"clang version 4.0.0 (http://llvm.org/git/clang.git
> ae4deadbea242e8ea517eef662c30443f75bd086) (http://llvm.org/git/llvm.git
> 818b4c1539df3e51dc7e62c89ead4abfd348827d)"}
> > +
> > +
> > +The align value in DIGlobalVariable description specifies variable
> alignment in
> > +case it was forced by C11 _Alignas(), C++11 alignas() keywords or
> compiler
> > +attribute __attribute__((aligned ())). In other case (when this field
> is missing)
> > +alignment is considered default. This is used when producing DWARF
> output
> > +for DW_AT_alignment value.
> > +
> > C/C++ function information
> > --------------------------
> >
> >
> > Modified: llvm/trunk/include/llvm/IR/DebugInfoMetadata.h
> > URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/IR/DebugInfoMetadata.h?rev=285181&r1=285180&r2=285181&view=diff
> >
> ==============================================================================
> > --- llvm/trunk/include/llvm/IR/DebugInfoMetadata.h (original)
> > +++ llvm/trunk/include/llvm/IR/DebugInfoMetadata.h Wed Oct 26 03:55:27
> 2016
> > @@ -1842,8 +1842,8 @@ public:
> > StringRef getName() const { return getStringOperand(1); }
> > DIFile *getFile() const { return cast_or_null<DIFile>(getRawFile()); }
> > DITypeRef getType() const { return DITypeRef(getRawType()); }
> > - uint64_t getAlignInBits() const { return AlignInBits; }
> > - uint64_t getAlignInBytes() const { return getAlignInBits() /
> CHAR_BIT; }
> > + DIAlignment getAlignInBits() const { return AlignInBits; }
> > + DIAlignment getAlignInBytes() const { return getAlignInBits() /
> CHAR_BIT; }
> >
> > StringRef getFilename() const {
> > if (auto *F = getFile())
> >
> > Modified: llvm/trunk/include/llvm/Support/Dwarf.h
> > URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Support/Dwarf.h?rev=285181&r1=285180&r2=285181&view=diff
> >
> ==============================================================================
> > --- llvm/trunk/include/llvm/Support/Dwarf.h (original)
> > +++ llvm/trunk/include/llvm/Support/Dwarf.h Wed Oct 26 03:55:27 2016
> > @@ -198,6 +198,7 @@ enum Attribute : uint16_t {
> > DW_AT_rvalue_reference = 0x78,
> > DW_AT_macros = 0x79,
> > DW_AT_noreturn = 0x87,
> > + DW_AT_alignment = 0x88,
> >
> > DW_AT_lo_user = 0x2000,
> > DW_AT_hi_user = 0x3fff,
> >
> > Modified: llvm/trunk/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
> > URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp?rev=285181&r1=285180&r2=285181&view=diff
> >
> ==============================================================================
> > --- llvm/trunk/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp (original)
> > +++ llvm/trunk/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp Wed Oct 26
> 03:55:27 2016
> > @@ -118,6 +118,10 @@ DIE *DwarfCompileUnit::getOrCreateGlobal
> > else
> > addGlobalName(GV->getName(), *VariableDIE, DeclContext);
> >
> > + if (DIAlignment AlignInBytes = GV->getAlignInBytes())
> > + addUInt(*VariableDIE, dwarf::DW_AT_alignment, dwarf::DW_FORM_udata,
> > + AlignInBytes);
> > +
> > // Add location.
> > bool addToAccelTable = false;
> >
> > @@ -771,7 +775,13 @@ void DwarfCompileUnit::applyVariableAttr
> > StringRef Name = Var.getName();
> > if (!Name.empty())
> > addString(VariableDie, dwarf::DW_AT_name, Name);
> > - addSourceLine(VariableDie, Var.getVariable());
> > + const auto *DIVar = Var.getVariable();
> > + if (DIVar)
> > + if (DIAlignment AlignInBytes = DIVar->getAlignInBytes())
> > + addUInt(VariableDie, dwarf::DW_AT_alignment, dwarf::DW_FORM_udata,
> > + AlignInBytes);
> > +
> > + addSourceLine(VariableDie, DIVar);
> > addType(VariableDie, Var.getType());
> > if (Var.isArtificial())
> > addFlag(VariableDie, dwarf::DW_AT_artificial);
> >
> > Modified: llvm/trunk/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
> > URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/AsmPrinter/DwarfUnit.cpp?rev=285181&r1=285180&r2=285181&view=diff
> >
> ==============================================================================
> > --- llvm/trunk/lib/CodeGen/AsmPrinter/DwarfUnit.cpp (original)
> > +++ llvm/trunk/lib/CodeGen/AsmPrinter/DwarfUnit.cpp Wed Oct 26 03:55:27
> 2016
> > @@ -1007,6 +1007,11 @@ void DwarfUnit::constructTypeDIE(DIE &Bu
> > if (RLang)
> > addUInt(Buffer, dwarf::DW_AT_APPLE_runtime_class,
> dwarf::DW_FORM_data1,
> > RLang);
> > +
> > + // Add align info if available.
> > + if (uint64_t AlignInBytes = CTy->getAlignInBytes())
> > + addUInt(Buffer, dwarf::DW_AT_alignment, dwarf::DW_FORM_udata,
> > + AlignInBytes);
> > }
> > }
> >
> > @@ -1394,6 +1399,7 @@ void DwarfUnit::constructMemberDIE(DIE &
> > } else {
> > uint64_t Size = DT->getSizeInBits();
> > uint64_t FieldSize = DD->getBaseTypeSize(DT);
> > + uint64_t AlignInBytes = DT->getAlignInBytes();
> > uint64_t OffsetInBytes;
> >
> > bool IsBitfield = FieldSize && Size != FieldSize;
> > @@ -1431,6 +1437,9 @@ void DwarfUnit::constructMemberDIE(DIE &
> > } else {
> > // This is not a bitfield.
> > OffsetInBytes = DT->getOffsetInBits() / 8;
> > + if (AlignInBytes)
> > + addUInt(MemberDie, dwarf::DW_AT_alignment, dwarf::DW_FORM_udata,
> > + AlignInBytes);
> > }
> >
> > if (DD->getDwarfVersion() <= 2) {
> > @@ -1507,6 +1516,10 @@ DIE *DwarfUnit::getOrCreateStaticMemberD
> > if (const ConstantFP *CFP =
> dyn_cast_or_null<ConstantFP>(DT->getConstant()))
> > addConstantFPValue(StaticMemberDIE, CFP);
> >
> > + if (uint64_t AlignInBytes = DT->getAlignInBytes())
> > + addUInt(StaticMemberDIE, dwarf::DW_AT_alignment,
> dwarf::DW_FORM_udata,
> > + AlignInBytes);
> > +
> > return &StaticMemberDIE;
> > }
> >
> >
> > Modified: llvm/trunk/lib/Support/Dwarf.cpp
> > URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Support/Dwarf.cpp?rev=285181&r1=285180&r2=285181&view=diff
> >
> ==============================================================================
> > --- llvm/trunk/lib/Support/Dwarf.cpp (original)
> > +++ llvm/trunk/lib/Support/Dwarf.cpp Wed Oct 26 03:55:27 2016
> > @@ -149,6 +149,8 @@ StringRef llvm::dwarf::AttributeString(u
> > case DW_AT_reference: return "DW_AT_reference";
> > case DW_AT_rvalue_reference: return "DW_AT_rvalue_reference";
> > case DW_AT_noreturn: return "DW_AT_noreturn";
> > + case DW_AT_alignment:
> > + return "DW_AT_alignment";
> > case DW_AT_MIPS_loop_begin: return "DW_AT_MIPS_loop_begin";
> > case DW_AT_MIPS_tail_loop_begin: return
> "DW_AT_MIPS_tail_loop_begin";
> > case DW_AT_MIPS_epilog_begin: return
> "DW_AT_MIPS_epilog_begin";
> >
> > Added: llvm/trunk/test/DebugInfo/X86/align_c11.ll
> > URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/X86/align_c11.ll?rev=285181&view=auto
> >
> ==============================================================================
> > --- llvm/trunk/test/DebugInfo/X86/align_c11.ll (added)
> > +++ llvm/trunk/test/DebugInfo/X86/align_c11.ll Wed Oct 26 03:55:27 2016
> > @@ -0,0 +1,83 @@
> > +; RUN: %llc_dwarf -filetype=obj < %s | llvm-dwarfdump -debug-dump=info
> - | FileCheck %s
> > +; REQUIRES: object-emission
> > +
> > +; Generated by clang -c -g -std=c11 -S -emit-llvm from the following
> C11 source
> > +;
> > +; // every object of type struct data will be aligned to 128-byte
> boundary
> > +; struct data {
> > +; char x;
> > +; _Alignas(128) char arr[2];
> > +; };
> > +;
> > +; _Alignas(2048) struct data d; // this instance of data is aligned
> even stricter
> > +; int foo(void)
> > +; {
> > +; struct data local_data;
> > +; return 0;
> > +; }
> > +
> > +; CHECK: DW_TAG_variable
> > +; CHECK-NOT: DW_TAG
> > +; CHECK: DW_AT_name{{.*}}"d"
> > +; CHECK-NOT: DW_TAG
> > +; CHECK: DW_AT_alignment{{.*}}2048
> > +; CHECK: DW_TAG_structure_type
> > +; CHECK: DW_TAG_member
> > +; CHECK: DW_TAG_member
> > +; CHECK-NOT: DW_TAG
> > +; CHECK: DW_AT_name{{.*}}"arr"
> > +; CHECK-NOT: DW_TAG
> > +; CHECK: DW_AT_alignment{{.*}}128
> > +
> > +; ModuleID = 'test.c'
> > +source_filename = "test.c"
> > +target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
> > +target triple = "x86_64-unknown-linux-gnu"
> > +
> > +%struct.data = type { i8, [127 x i8], [2 x i8], [126 x i8] }
> > +
> > + at d = common global %struct.data zeroinitializer, align 2048, !dbg !0
> > +
> > +; Function Attrs: nounwind uwtable
> > +define i32 @foo() #0 !dbg !17 {
> > +entry:
> > + %local_data = alloca %struct.data, align 128
> > + call void @llvm.dbg.declare(metadata %struct.data* %local_data,
> metadata !21, metadata !22), !dbg !23
> > + ret i32 0, !dbg !24
> > +}
> > +
> > +; Function Attrs: nounwind readnone
> > +declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
> > +
> > +attributes #0 = { nounwind uwtable }
> > +attributes #1 = { nounwind readnone }
> > +
> > +!llvm.dbg.cu = !{!1}
> > +!llvm.module.flags = !{!14, !15}
> > +!llvm.ident = !{!16}
> > +
> > +!0 = distinct !DIGlobalVariable(name: "d", scope: !1, file: !5, line:
> 7, type: !6, isLocal: false, isDefinition: true, align: 16384)
> > +!1 = distinct !DICompileUnit(language: DW_LANG_C99, file: !2, producer:
> "clang version 4.0.0 (http://llvm.org/git/clang.git
> 9ce5220b821054019059c2ac4a9b132c7723832d) (http://llvm.org/git/llvm.git
> 9a6298be89ce0359b151c0a37af2776a12c69e85)", isOptimized: false,
> runtimeVersion: 0, emissionKind: FullDebug, enums: !3, globals: !4)
> > +!2 = !DIFile(filename: "test.c", directory: "/tmp")
> > +!3 = !{}
> > +!4 = !{!0}
> > +!5 = !DIFile(filename: "test.c", directory: "/tmp")
> > +!6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name:
> "data", file: !5, line: 2, size: 2048, elements: !7)
> > +!7 = !{!8, !10}
> > +!8 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !6, file: !5,
> line: 3, baseType: !9, size: 8)
> > +!9 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
> > +!10 = !DIDerivedType(tag: DW_TAG_member, name: "arr", scope: !6, file:
> !5, line: 4, baseType: !11, size: 16, align: 1024, offset: 1024)
> > +!11 = !DICompositeType(tag: DW_TAG_array_type, baseType: !9, size: 16,
> elements: !12)
> > +!12 = !{!13}
> > +!13 = !DISubrange(count: 2)
> > +!14 = !{i32 2, !"Dwarf Version", i32 4}
> > +!15 = !{i32 2, !"Debug Info Version", i32 3}
> > +!16 = !{!"clang version 4.0.0 (http://llvm.org/git/clang.git
> 9ce5220b821054019059c2ac4a9b132c7723832d) (http://llvm.org/git/llvm.git
> 9a6298be89ce0359b151c0a37af2776a12c69e85)"}
> > +!17 = distinct !DISubprogram(name: "foo", scope: !5, file: !5, line: 8,
> type: !18, isLocal: false, isDefinition: true, scopeLine: 9, flags:
> DIFlagPrototyped, isOptimized: false, unit: !1, variables: !3)
> > +!18 = !DISubroutineType(types: !19)
> > +!19 = !{!20}
> > +!20 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
> > +!21 = !DILocalVariable(name: "local_data", scope: !17, file: !5, line:
> 10, type: !6)
> > +!22 = !DIExpression()
> > +!23 = !DILocation(line: 10, column: 17, scope: !17)
> > +!24 = !DILocation(line: 11, column: 5, scope: !17)
> >
> > Added: llvm/trunk/test/DebugInfo/X86/align_cpp11.ll
> > URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/X86/align_cpp11.ll?rev=285181&view=auto
> >
> ==============================================================================
> > --- llvm/trunk/test/DebugInfo/X86/align_cpp11.ll (added)
> > +++ llvm/trunk/test/DebugInfo/X86/align_cpp11.ll Wed Oct 26 03:55:27 2016
> > @@ -0,0 +1,172 @@
> > +; RUN: %llc_dwarf -filetype=obj < %s | llvm-dwarfdump -debug-dump=info
> - | FileCheck %s
> > +; REQUIRES: object-emission
> > +
> > +; Generated by clang++ -c -g -std=c++11 -S -emit-llvm from the
> following C++11 source
> > +; struct S {
> > +; char x;
> > +; alignas(128) char xx;
> > +; };
> > +;
> > +; class alignas(64) C0 {
> > +; };
> > +;
> > +; class C1 {
> > +; alignas(64) static void *p;
> > +; };
> > +;
> > +; enum alignas(16) E {
> > +; A,
> > +; B,
> > +; C,
> > +; };
> > +;
> > +; C0 c0;
> > +;
> > +; alignas(2048) S s;
> > +;
> > +; void foo()
> > +; {
> > +; S ss;
> > +; E e;
> > +; C1 c1;
> > +; alignas(32) int i = 42;
> > +; auto Lambda = [i](){};
> > +; }
> > +
> > +; CHECK: DW_TAG_class_type
> > +; CHECK-NOT: DW_TAG
> > +; CHECK: DW_AT_name{{.*}}"C0"
> > +; CHECK-NOT: DW_TAG
> > +; CHECK: DW_AT_alignment{{.*}}64
> > +
> > +; CHECK: DW_TAG_variable
> > +; CHECK-NOT: DW_TAG
> > +; CHECK: DW_AT_name{{.*}}"s"
> > +; CHECK-NOT: DW_TAG
> > +; CHECK: DW_AT_alignment{{.*}}2048
> > +
> > +; CHECK: DW_TAG_structure_type
> > +; CHECK: DW_TAG_member
> > +; CHECK: DW_AT_name{{.*}}"xx"
> > +; CHECK-NOT: DW_TAG
> > +; CHECK: DW_AT_alignment{{.*}}128
> > +
> > +; CHECK: DW_TAG_enumeration_type
> > +; CHECK-NOT: DW_TAG
> > +; CHECK: DW_AT_alignment{{.*}}16
> > +
> > +; CHECK: DW_TAG_variable
> > +; CHECK: DW_AT_name{{.*}}"i"
> > +; CHECK-NOT: DW_TAG
> > +; CHECK: DW_AT_alignment{{.*}}32
> > +; CHECK: DW_TAG_class_type
> > +; CHECK: DW_TAG_member
> > +; CHECK-NOT: DW_TAG
> > +; CHECK: DW_AT_name{{.*}}"i"
> > +; CHECK-NOT: DW_TAG
> > +; CHECK: DW_AT_alignment{{.*}}32
> > +
> > +; CHECK: DW_TAG_class_type
> > +; CHECK-NOT: DW_TAG
> > +; CHECK: DW_AT_name{{.*}}"C1"
> > +; CHECK: DW_TAG_member
> > +; CHECK-NOT: DW_TAG
> > +; CHECK: DW_AT_name{{.*}}"p"
> > +; CHECK-NOT: DW_TAG
> > +; CHECK: DW_AT_alignment{{.*}}64
> > +
> > +; ModuleID = 'test.cpp'
> > +source_filename = "test.cpp"
> > +target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
> > +target triple = "x86_64-unknown-linux-gnu"
> > +
> > +%class.C0 = type { [64 x i8] }
> > +%struct.S = type { i8, [127 x i8], i8, [127 x i8] }
> > +%class.C1 = type { i8 }
> > +%class.anon = type { i32 }
> > +
> > + at c0 = global %class.C0 zeroinitializer, align 64, !dbg !0
> > + at s = global %struct.S zeroinitializer, align 2048, !dbg !11
> > +
> > +; Function Attrs: nounwind uwtable
> > +define void @_Z3foov() #0 !dbg !22 {
> > +entry:
> > + %ss = alloca %struct.S, align 128
> > + %e = alloca i32, align 16
> > + %c1 = alloca %class.C1, align 1
> > + %i = alloca i32, align 32
> > + %Lambda = alloca %class.anon, align 4
> > + call void @llvm.dbg.declare(metadata %struct.S* %ss, metadata !25,
> metadata !26), !dbg !27
> > + call void @llvm.dbg.declare(metadata i32* %e, metadata !28, metadata
> !26), !dbg !29
> > + call void @llvm.dbg.declare(metadata %class.C1* %c1, metadata !30,
> metadata !26), !dbg !35
> > + call void @llvm.dbg.declare(metadata i32* %i, metadata !36, metadata
> !26), !dbg !38
> > + store i32 42, i32* %i, align 32, !dbg !38
> > + call void @llvm.dbg.declare(metadata %class.anon* %Lambda, metadata
> !39, metadata !26), !dbg !48
> > + %0 = getelementptr inbounds %class.anon, %class.anon* %Lambda, i32 0,
> i32 0, !dbg !49
> > + %1 = load i32, i32* %i, align 32, !dbg !50
> > + store i32 %1, i32* %0, align 4, !dbg !49
> > + ret void, !dbg !51
> > +}
> > +
> > +; Function Attrs: nounwind readnone
> > +declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
> > +
> > +attributes #0 = { nounwind uwtable }
> > +attributes #1 = { nounwind readnone }
> > +
> > +!llvm.dbg.cu = !{!1}
> > +!llvm.module.flags = !{!19, !20}
> > +!llvm.ident = !{!21}
> > +
> > +!0 = distinct !DIGlobalVariable(name: "c0", scope: !1, file: !5, line:
> 19, type: !17, isLocal: false, isDefinition: true)
> > +!1 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !2,
> producer: "clang version 4.0.0 (http://llvm.org/git/clang.git
> 9ce5220b821054019059c2ac4a9b132c7723832d) (http://llvm.org/git/llvm.git
> 9a6298be89ce0359b151c0a37af2776a12c69e85)", isOptimized: false,
> runtimeVersion: 0, emissionKind: FullDebug, enums: !3, globals: !10)
> > +!2 = !DIFile(filename: "test.cpp", directory: "/tmp")
> > +!3 = !{!4}
> > +!4 = !DICompositeType(tag: DW_TAG_enumeration_type, name: "E", file:
> !5, line: 13, size: 32, align: 128, elements: !6, identifier: "_ZTS1E")
> > +!5 = !DIFile(filename: "./test.cpp", directory: "/tmp")
> > +!6 = !{!7, !8, !9}
> > +!7 = !DIEnumerator(name: "A", value: 0)
> > +!8 = !DIEnumerator(name: "B", value: 1)
> > +!9 = !DIEnumerator(name: "C", value: 2)
> > +!10 = !{!0, !11}
> > +!11 = distinct !DIGlobalVariable(name: "s", scope: !1, file: !5, line:
> 21, type: !12, isLocal: false, isDefinition: true, align: 16384)
> > +!12 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "S",
> file: !5, line: 1, size: 2048, elements: !13, identifier: "_ZTS1S")
> > +!13 = !{!14, !16}
> > +!14 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !12, file:
> !5, line: 2, baseType: !15, size: 8)
> > +!15 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
> > +!16 = !DIDerivedType(tag: DW_TAG_member, name: "xx", scope: !12, file:
> !5, line: 3, baseType: !15, size: 8, align: 1024, offset: 1024)
> > +!17 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "C0",
> file: !5, line: 6, size: 512, align: 512, elements: !18, identifier:
> "_ZTS2C0")
> > +!18 = !{}
> > +!19 = !{i32 2, !"Dwarf Version", i32 4}
> > +!20 = !{i32 2, !"Debug Info Version", i32 3}
> > +!21 = !{!"clang version 4.0.0 (http://llvm.org/git/clang.git
> 9ce5220b821054019059c2ac4a9b132c7723832d) (http://llvm.org/git/llvm.git
> 9a6298be89ce0359b151c0a37af2776a12c69e85)"}
> > +!22 = distinct !DISubprogram(name: "foo", linkageName: "_Z3foov",
> scope: !5, file: !5, line: 23, type: !23, isLocal: false, isDefinition:
> true, scopeLine: 24, flags: DIFlagPrototyped, isOptimized: false, unit: !1,
> variables: !18)
> > +!23 = !DISubroutineType(types: !24)
> > +!24 = !{null}
> > +!25 = !DILocalVariable(name: "ss", scope: !22, file: !5, line: 25,
> type: !12)
> > +!26 = !DIExpression()
> > +!27 = !DILocation(line: 25, column: 7, scope: !22)
> > +!28 = !DILocalVariable(name: "e", scope: !22, file: !5, line: 26, type:
> !4)
> > +!29 = !DILocation(line: 26, column: 7, scope: !22)
> > +!30 = !DILocalVariable(name: "c1", scope: !22, file: !5, line: 27,
> type: !31)
> > +!31 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "C1",
> file: !5, line: 9, size: 8, elements: !32, identifier: "_ZTS2C1")
> > +!32 = !{!33}
> > +!33 = !DIDerivedType(tag: DW_TAG_member, name: "p", scope: !31, file:
> !5, line: 10, baseType: !34, align: 512, flags: DIFlagStaticMember)
> > +!34 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
> > +!35 = !DILocation(line: 27, column: 8, scope: !22)
> > +!36 = !DILocalVariable(name: "i", scope: !22, file: !5, line: 28, type:
> !37, align: 256)
> > +!37 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
> > +!38 = !DILocation(line: 28, column: 21, scope: !22)
> > +!39 = !DILocalVariable(name: "Lambda", scope: !22, file: !5, line: 29,
> type: !40)
> > +!40 = distinct !DICompositeType(tag: DW_TAG_class_type, scope: !22,
> file: !5, line: 29, size: 32, elements: !41)
> > +!41 = !{!42, !43}
> > +!42 = !DIDerivedType(tag: DW_TAG_member, name: "i", scope: !40, file:
> !5, line: 29, baseType: !37, size: 32, align: 256)
> > +!43 = !DISubprogram(name: "operator()", scope: !40, file: !5, line: 29,
> type: !44, isLocal: false, isDefinition: false, scopeLine: 29, flags:
> DIFlagPublic | DIFlagPrototyped, isOptimized: false)
> > +!44 = !DISubroutineType(types: !45)
> > +!45 = !{null, !46}
> > +!46 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !47, size: 64,
> flags: DIFlagArtificial | DIFlagObjectPointer)
> > +!47 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !40)
> > +!48 = !DILocation(line: 29, column: 10, scope: !22)
> > +!49 = !DILocation(line: 29, column: 19, scope: !22)
> > +!50 = !DILocation(line: 29, column: 20, scope: !22)
> > +!51 = !DILocation(line: 30, column: 1, scope: !22)
> >
> > Added: llvm/trunk/test/DebugInfo/X86/align_objc.ll
> > URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/X86/align_objc.ll?rev=285181&view=auto
> >
> ==============================================================================
> > --- llvm/trunk/test/DebugInfo/X86/align_objc.ll (added)
> > +++ llvm/trunk/test/DebugInfo/X86/align_objc.ll Wed Oct 26 03:55:27 2016
> > @@ -0,0 +1,98 @@
> > +; RUN: %llc_dwarf -filetype=obj < %s | llvm-dwarfdump -debug-dump=info
> - | FileCheck %s
> > +; REQUIRES: object-emission
> > +
> > +; typedef struct __attribute__((aligned (128))) {
> > +; char c;
> > +; } S0;
> > +;
> > +; typedef struct {
> > +; __attribute__((aligned (64))) char c;
> > +; } S1;
> > +;
> > +; S0 s0;
> > +;
> > +; void f() {
> > +; S1 s1;
> > +; __attribute__((aligned (32))) int i;
> > +; }
> > +
> > +; CHECK: DW_TAG_typedef
> > +; CHECK-NOT: DW_TAG
> > +; CHECK: DW_AT_name{{.*}}"S0"
> > +; CHECK: DW_TAG_structure_type
> > +; CHECK-NOT: DW_TAG
> > +; CHECK: DW_AT_alignment{{.*}}128
> > +
> > +; CHECK: DW_TAG_variable
> > +; CHECK: DW_AT_name{{.*}}"i"
> > +; CHECK-NOT: DW_TAG
> > +; CHECK: DW_AT_alignment{{.*}}32
> > +
> > +; CHECK: DW_TAG_typedef
> > +; CHECK-NOT: DW_TAG
> > +; CHECK: DW_AT_name{{.*}}"S1"
> > +; CHECK: DW_TAG_structure_type
> > +; CHECK: DW_TAG_member
> > +; CHECK-NOT: DW_TAG
> > +; CHECK: DW_AT_name{{.*}}"c"
> > +; CHECK-NOT: DW_TAG
> > +; CHECK: DW_AT_alignment{{.*}}64
> > +
> > +; ModuleID = 'test.m'
> > +source_filename = "test.m"
> > +target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
> > +target triple = "x86_64-unknown-linux-gnu"
> > +
> > +%struct.S0 = type { i8, [127 x i8] }
> > +%struct.S1 = type { i8, [63 x i8] }
> > +
> > + at s0 = common global %struct.S0 zeroinitializer, align 128, !dbg !0
> > +
> > +; Function Attrs: nounwind uwtable
> > +define void @f() #0 !dbg !14 {
> > +entry:
> > + %s1 = alloca %struct.S1, align 64
> > + %i = alloca i32, align 32
> > + call void @llvm.dbg.declare(metadata %struct.S1* %s1, metadata !17,
> metadata !22), !dbg !23
> > + call void @llvm.dbg.declare(metadata i32* %i, metadata !24, metadata
> !22), !dbg !26
> > + ret void, !dbg !27
> > +}
> > +
> > +; Function Attrs: nounwind readnone
> > +declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
> > +
> > +attributes #0 = { nounwind uwtable }
> > +attributes #1 = { nounwind readnone }
> > +
> > +!llvm.dbg.cu = !{!1}
> > +!llvm.module.flags = !{!11, !12}
> > +!llvm.ident = !{!13}
> > +
> > +!0 = distinct !DIGlobalVariable(name: "s0", scope: !1, file: !5, line:
> 10, type: !6, isLocal: false, isDefinition: true)
> > +!1 = distinct !DICompileUnit(language: DW_LANG_ObjC, file: !2,
> producer: "clang version 4.0.0 (http://llvm.org/git/clang.git
> 9ce5220b821054019059c2ac4a9b132c7723832d) (http://llvm.org/git/llvm.git
> 9a6298be89ce0359b151c0a37af2776a12c69e85)", isOptimized: false,
> runtimeVersion: 1, emissionKind: FullDebug, enums: !3, globals: !4)
> > +!2 = !DIFile(filename: "test.m", directory: "/tmp")
> > +!3 = !{}
> > +!4 = !{!0}
> > +!5 = !DIFile(filename: "test.m", directory: "/tmp")
> > +!6 = !DIDerivedType(tag: DW_TAG_typedef, name: "S0", file: !5, line: 3,
> baseType: !7)
> > +!7 = distinct !DICompositeType(tag: DW_TAG_structure_type, file: !5,
> line: 1, size: 1024, align: 1024, elements: !8)
> > +!8 = !{!9}
> > +!9 = !DIDerivedType(tag: DW_TAG_member, name: "c", scope: !7, file: !5,
> line: 2, baseType: !10, size: 8)
> > +!10 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
> > +!11 = !{i32 2, !"Dwarf Version", i32 4}
> > +!12 = !{i32 2, !"Debug Info Version", i32 3}
> > +!13 = !{!"clang version 4.0.0 (http://llvm.org/git/clang.git
> 9ce5220b821054019059c2ac4a9b132c7723832d) (http://llvm.org/git/llvm.git
> 9a6298be89ce0359b151c0a37af2776a12c69e85)"}
> > +!14 = distinct !DISubprogram(name: "f", scope: !5, file: !5, line: 12,
> type: !15, isLocal: false, isDefinition: true, scopeLine: 12, isOptimized:
> false, unit: !1, variables: !3)
> > +!15 = !DISubroutineType(types: !16)
> > +!16 = !{null}
> > +!17 = !DILocalVariable(name: "s1", scope: !14, file: !5, line: 13,
> type: !18)
> > +!18 = !DIDerivedType(tag: DW_TAG_typedef, name: "S1", file: !5, line:
> 8, baseType: !19)
> > +!19 = distinct !DICompositeType(tag: DW_TAG_structure_type, file: !5,
> line: 6, size: 512, elements: !20)
> > +!20 = !{!21}
> > +!21 = !DIDerivedType(tag: DW_TAG_member, name: "c", scope: !19, file:
> !5, line: 7, baseType: !10, size: 8, align: 512)
> > +!22 = !DIExpression()
> > +!23 = !DILocation(line: 13, column: 6, scope: !14)
> > +!24 = !DILocalVariable(name: "i", scope: !14, file: !5, line: 14, type:
> !25, align: 256)
> > +!25 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
> > +!26 = !DILocation(line: 14, column: 37, scope: !14)
> > +!27 = !DILocation(line: 15, column: 1, scope: !14)
> >
> > Modified: llvm/trunk/test/DebugInfo/X86/dwarf-public-names.ll
> > URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/X86/dwarf-public-names.ll?rev=285181&r1=285180&r2=285181&view=diff
> >
> ==============================================================================
> > --- llvm/trunk/test/DebugInfo/X86/dwarf-public-names.ll (original)
> > +++ llvm/trunk/test/DebugInfo/X86/dwarf-public-names.ll Wed Oct 26
> 03:55:27 2016
> > @@ -102,11 +102,11 @@ attributes #1 = { nounwind readnone }
> > !4 = !DIFile(filename: "dwarf-public-names.cpp", directory:
> "/usr2/kparzysz/s.hex/t")
> > !5 = !DISubroutineType(types: !6)
> > !6 = !{null, !7}
> > -!7 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64,
> flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !8)
> > -!8 = !DICompositeType(tag: DW_TAG_structure_type, name: "C", line: 1,
> size: 8, align: 8, file: !37, elements: !9)
> > +!7 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, flags:
> DIFlagArtificial | DIFlagObjectPointer, baseType: !8)
> > +!8 = !DICompositeType(tag: DW_TAG_structure_type, name: "C", line: 1,
> size: 8, file: !37, elements: !9)
> > !9 = !{!10, !12, !14}
> > !10 = !DIDerivedType(tag: DW_TAG_member, name: "static_member_variable",
> line: 4, flags: DIFlagStaticMember, file: !37, scope: !8, baseType: !11)
> > -!11 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align:
> 32, encoding: DW_ATE_signed)
> > +!11 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32,
> encoding: DW_ATE_signed)
> > !12 = !DISubprogram(name: "member_function", linkageName:
> "_ZN1C15member_functionEv", line: 2, isLocal: false, isDefinition: false,
> virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 2,
> file: !4, scope: !8, type: !5, variables: !13)
> > !13 = !{} ; previously: invalid DW_TAG_base_type
> > !14 = !DISubprogram(name: "static_member_function", linkageName:
> "_ZN1C22static_member_functionEv", line: 3, isLocal: false, isDefinition:
> false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false,
> scopeLine: 3, file: !4, scope: !8, type: !15, variables: !17)
> > @@ -124,7 +124,7 @@ attributes #1 = { nounwind readnone }
> > !26 = !DIGlobalVariable(name: "global_variable", line: 17, isLocal:
> false, isDefinition: true, scope: null, file: !4, type: !8)
> > !27 = !DIGlobalVariable(name: "global_namespace_variable", linkageName:
> "_ZN2ns25global_namespace_variableE", line: 27, isLocal: false,
> isDefinition: true, scope: !21, file: !4, type: !11)
> > !28 = !DILocalVariable(name: "this", line: 9, arg: 1, flags:
> DIFlagArtificial | DIFlagObjectPointer, scope: !3, file: !4, type: !29)
> > -!29 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64,
> baseType: !8)
> > +!29 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, baseType: !8)
> > !30 = !DILocation(line: 9, scope: !3)
> > !31 = !DILocation(line: 10, scope: !3)
> > !32 = !DILocation(line: 11, scope: !3)
> >
> >
> > _______________________________________________
> > llvm-commits mailing list
> > llvm-commits at lists.llvm.org
> > http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-commits
>
> _______________________________________________
> llvm-commits mailing list
> llvm-commits at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-commits
>
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