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archived-llvm/test/DebugInfo/X86/align_cpp11.ll
Adrian Prantl 69e607f200 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%.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@312144 91177308-0d34-0410-b5e6-96231b3b80d8
2017-08-30 18:06:51 +00:00

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7.2 KiB
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; 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 !12
; Function Attrs: nounwind uwtable
define void @_Z3foov() #0 !dbg !24 {
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 !27, metadata !28), !dbg !29
call void @llvm.dbg.declare(metadata i32* %e, metadata !30, metadata !28), !dbg !31
call void @llvm.dbg.declare(metadata %class.C1* %c1, metadata !32, metadata !28), !dbg !37
call void @llvm.dbg.declare(metadata i32* %i, metadata !38, metadata !28), !dbg !40
store i32 42, i32* %i, align 32, !dbg !40
call void @llvm.dbg.declare(metadata %class.anon* %Lambda, metadata !41, metadata !28), !dbg !50
%0 = getelementptr inbounds %class.anon, %class.anon* %Lambda, i32 0, i32 0, !dbg !51
%1 = load i32, i32* %i, align 32, !dbg !52
store i32 %1, i32* %0, align 4, !dbg !51
ret void, !dbg !53
}
; Function Attrs: nounwind readnone
declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
attributes #0 = { nounwind uwtable }
attributes #1 = { nounwind readnone }
!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!21, !22}
!llvm.ident = !{!23}
!0 = distinct !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
!1 = !DIGlobalVariable(name: "c0", scope: !2, file: !6, line: 19, type: !19, isLocal: false, isDefinition: true)
!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, 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: !4, globals: !11)
!3 = !DIFile(filename: "test.cpp", directory: "/tmp")
!4 = !{!5}
!5 = !DICompositeType(tag: DW_TAG_enumeration_type, name: "E", file: !6, line: 13, size: 32, align: 128, elements: !7, identifier: "_ZTS1E")
!6 = !DIFile(filename: "./test.cpp", directory: "/tmp")
!7 = !{!8, !9, !10}
!8 = !DIEnumerator(name: "A", value: 0)
!9 = !DIEnumerator(name: "B", value: 1)
!10 = !DIEnumerator(name: "C", value: 2)
!11 = !{!0, !12}
!12 = distinct !DIGlobalVariableExpression(var: !13, expr: !DIExpression())
!13 = !DIGlobalVariable(name: "s", scope: !2, file: !6, line: 21, type: !14, isLocal: false, isDefinition: true, align: 16384)
!14 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "S", file: !6, line: 1, size: 2048, elements: !15, identifier: "_ZTS1S")
!15 = !{!16, !18}
!16 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !14, file: !6, line: 2, baseType: !17, size: 8)
!17 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
!18 = !DIDerivedType(tag: DW_TAG_member, name: "xx", scope: !14, file: !6, line: 3, baseType: !17, size: 8, align: 1024, offset: 1024)
!19 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "C0", file: !6, line: 6, size: 512, align: 512, elements: !20, identifier: "_ZTS2C0")
!20 = !{}
!21 = !{i32 2, !"Dwarf Version", i32 4}
!22 = !{i32 2, !"Debug Info Version", i32 3}
!23 = !{!"clang version 4.0.0 (http://llvm.org/git/clang.git 9ce5220b821054019059c2ac4a9b132c7723832d) (http://llvm.org/git/llvm.git 9a6298be89ce0359b151c0a37af2776a12c69e85)"}
!24 = distinct !DISubprogram(name: "foo", linkageName: "_Z3foov", scope: !6, file: !6, line: 23, type: !25, isLocal: false, isDefinition: true, scopeLine: 24, flags: DIFlagPrototyped, isOptimized: false, unit: !2, variables: !20)
!25 = !DISubroutineType(types: !26)
!26 = !{null}
!27 = !DILocalVariable(name: "ss", scope: !24, file: !6, line: 25, type: !14)
!28 = !DIExpression()
!29 = !DILocation(line: 25, column: 7, scope: !24)
!30 = !DILocalVariable(name: "e", scope: !24, file: !6, line: 26, type: !5)
!31 = !DILocation(line: 26, column: 7, scope: !24)
!32 = !DILocalVariable(name: "c1", scope: !24, file: !6, line: 27, type: !33)
!33 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "C1", file: !6, line: 9, size: 8, elements: !34, identifier: "_ZTS2C1")
!34 = !{!35}
!35 = !DIDerivedType(tag: DW_TAG_member, name: "p", scope: !33, file: !6, line: 10, baseType: !36, align: 512, flags: DIFlagStaticMember)
!36 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
!37 = !DILocation(line: 27, column: 8, scope: !24)
!38 = !DILocalVariable(name: "i", scope: !24, file: !6, line: 28, type: !39, align: 256)
!39 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!40 = !DILocation(line: 28, column: 21, scope: !24)
!41 = !DILocalVariable(name: "Lambda", scope: !24, file: !6, line: 29, type: !42)
!42 = distinct !DICompositeType(tag: DW_TAG_class_type, scope: !24, file: !6, line: 29, size: 32, elements: !43)
!43 = !{!44, !45}
!44 = !DIDerivedType(tag: DW_TAG_member, name: "i", scope: !42, file: !6, line: 29, baseType: !39, size: 32, align: 256)
!45 = !DISubprogram(name: "operator()", scope: !42, file: !6, line: 29, type: !46, isLocal: false, isDefinition: false, scopeLine: 29, flags: DIFlagPublic | DIFlagPrototyped, isOptimized: false)
!46 = !DISubroutineType(types: !47)
!47 = !{null, !48}
!48 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !49, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
!49 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !42)
!50 = !DILocation(line: 29, column: 10, scope: !24)
!51 = !DILocation(line: 29, column: 19, scope: !24)
!52 = !DILocation(line: 29, column: 20, scope: !24)
!53 = !DILocation(line: 30, column: 1, scope: !24)
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