Revert r285181 "DebugInfo: support for DWARFv5 DW_AT_alignment attribute".

The commit broke the builds.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285183 91177308-0d34-0410-b5e6-96231b3b80d8

docs/SourceLevelDebugging.rst

@@ -386,7 +386,7 @@ Given an integer global variable declared as follows:
 
 .. code-block:: c
 
-  _Alignas(8) int MyGlobal = 100;
+  int MyGlobal = 100;
 
 a C/C++ front-end would generate the following descriptors:
 
@@ -395,59 +395,54 @@ a C/C++ front-end would generate the following descriptors:
   ;;
   ;; Define the global itself.
   ;;
-  @MyGlobal = global i32 100, align 8, !dbg !0
+  @MyGlobal = global i32 100, align 4
 
   ;;
   ;; List of debug info of globals
   ;;
-  !llvm.dbg.cu = !{!1}
+  !llvm.dbg.cu = !{!0}
 
   ;; 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.
-  !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)
+  !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)
 
   ;;
   ;; Define the file
   ;;
-  !2 = !DIFile(filename: "/dev/stdin",
+  !1 = !DIFile(filename: "/dev/stdin",
                directory: "/Users/dexonsmith/data/llvm/debug-info")
 
   ;; An empty array.
-  !3 = !{}
+  !2 = !{}
 
   ;; The Array of Global Variables
-  !4 = !{!0}
+  !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)
 
   ;;
   ;; Define the type
   ;;
-  !5 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+  !5 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 
   ;; Dwarf version to output.
-  !6 = !{i32 2, !"Dwarf Version", i32 4}
+  !6 = !{i32 2, !"Dwarf Version", i32 2}
 
   ;; 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
 --------------------------
 

include/llvm/IR/DebugInfoMetadata.h

@@ -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()); }
-  DIAlignment getAlignInBits() const { return AlignInBits; }
-  DIAlignment getAlignInBytes() const { return getAlignInBits() / CHAR_BIT; }
+  uint64_t getAlignInBits() const { return AlignInBits; }
+  uint64_t getAlignInBytes() const { return getAlignInBits() / CHAR_BIT; }
 
   StringRef getFilename() const {
     if (auto *F = getFile())

include/llvm/Support/Dwarf.h

@@ -198,7 +198,6 @@ 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,

lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp

@@ -118,10 +118,6 @@ DIE *DwarfCompileUnit::getOrCreateGlobalVariableDIE(
   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;
 
@@ -775,13 +771,7 @@ void DwarfCompileUnit::applyVariableAttributes(const DbgVariable &Var,
   StringRef Name = Var.getName();
   if (!Name.empty())
     addString(VariableDie, dwarf::DW_AT_name, Name);
-  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);
+  addSourceLine(VariableDie, Var.getVariable());
   addType(VariableDie, Var.getType());
   if (Var.isArtificial())
     addFlag(VariableDie, dwarf::DW_AT_artificial);

lib/CodeGen/AsmPrinter/DwarfUnit.cpp

@@ -1007,11 +1007,6 @@ void DwarfUnit::constructTypeDIE(DIE &Buffer, const DICompositeType *CTy) {
     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);
   }
 }
 
@@ -1399,7 +1394,6 @@ void DwarfUnit::constructMemberDIE(DIE &Buffer, const DIDerivedType *DT) {
   } 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;
@@ -1437,9 +1431,6 @@ void DwarfUnit::constructMemberDIE(DIE &Buffer, const DIDerivedType *DT) {
     } 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) {
@@ -1516,10 +1507,6 @@ DIE *DwarfUnit::getOrCreateStaticMemberDIE(const DIDerivedType *DT) {
   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;
 }
 

lib/Support/Dwarf.cpp

@@ -149,8 +149,6 @@ StringRef llvm::dwarf::AttributeString(unsigned Attribute) {
   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";

test/DebugInfo/X86/align_c11.ll

@@ -1,83 +0,0 @@
-; 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] }
-
-@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)

test/DebugInfo/X86/align_cpp11.ll

@@ -1,172 +0,0 @@
-; 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 }
-
-@c0 = global %class.C0 zeroinitializer, align 64, !dbg !0
-@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)

test/DebugInfo/X86/align_objc.ll

@@ -1,98 +0,0 @@
-; 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] }
-
-@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)

test/DebugInfo/X86/dwarf-public-names.ll

@@ -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, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !8)
-!8 = !DICompositeType(tag: DW_TAG_structure_type, name: "C", line: 1, size: 8, file: !37, elements: !9)
+!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)
 !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, encoding: DW_ATE_signed)
+!11 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 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, baseType: !8)
+!29 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !8)
 !30 = !DILocation(line: 9, scope: !3)
 !31 = !DILocation(line: 10, scope: !3)
 !32 = !DILocation(line: 11, scope: !3)