1 ; This tests that emitting CodeView arrays doesn't assert when an ODR violation 2 ; makes our array dimension size calculations inaccurate. (PR32383) 3 4 ; Here was the scenario: 5 ; $ cat a.cpp 6 ; typedef union YYSTYPE { int x; } YYSTYPE; 7 ; YYSTYPE a; 8 ; $ cat b.cpp 9 ; typedef union YYSTYPE { char x; } YYSTYPE; 10 ; void fn1() { YYSTYPE a[1]; } 11 ; $ clang-cl -c -Zi -flto a.cpp b.cpp 12 ; $ llvm-link a.obj b.obj -S -o t.ll # This is the test case IR. 13 ; $ llc t.ll # Used to assert 14 15 ; RUN: llc < %s | FileCheck %s 16 17 ; FIXME: sizeof(a) in the user program is 1, but we claim it is 4 because 18 ; sometimes the frontend lies to us. See array-types-advanced.ll for an example. 19 ; 20 ; CHECK: Array ({{.*}}) { 21 ; CHECK: TypeLeafKind: LF_ARRAY (0x1503) 22 ; CHECK: ElementType: YYSTYPE ({{.*}}) 23 ; CHECK: IndexType: unsigned __int64 (0x23) 24 ; CHECK: SizeOf: 4 25 ; CHECK: Name: 26 ; CHECK: } 27 28 ; sizeof(YYSTYPE) == 4 29 ; CHECK: Union ({{.*}}) { 30 ; CHECK: TypeLeafKind: LF_UNION (0x1506) 31 ; CHECK: MemberCount: 1 32 ; CHECK: Properties [ (0x600) 33 ; CHECK: HasUniqueName (0x200) 34 ; CHECK: Sealed (0x400) 35 ; CHECK: ] 36 ; CHECK: FieldList: <field list> 37 ; CHECK: SizeOf: 4 38 ; CHECK: Name: YYSTYPE 39 ; CHECK: LinkageName: .?ATYYSTYPE@@ 40 ; CHECK: } 41 42 ; ModuleID = 'llvm-link' 43 source_filename = "llvm-link" 44 target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128" 45 target triple = "x86_64-pc-windows-msvc19.10.24728" 46 47 %union.YYSTYPE = type { i32 } 48 %union.YYSTYPE.0 = type { i8 } 49 50 @"\01?a@@3TYYSTYPE@@A" = global %union.YYSTYPE zeroinitializer, align 4, !dbg !0 51 52 ; Function Attrs: noinline nounwind sspstrong uwtable 53 define void @"\01?fn1@@YAXXZ"() #0 !dbg !21 { 54 entry: 55 %a = alloca [1 x %union.YYSTYPE.0], align 1 56 call void @llvm.dbg.declare(metadata [1 x %union.YYSTYPE.0]* %a, metadata !24, metadata !29), !dbg !30 57 ret void, !dbg !30 58 } 59 60 ; Function Attrs: nounwind readnone 61 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 62 63 attributes #0 = { noinline nounwind sspstrong uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" } 64 attributes #1 = { nounwind readnone } 65 66 !llvm.dbg.cu = !{!2, !11} 67 !llvm.ident = !{!13, !13} 68 !llvm.module.flags = !{!18, !19, !20} 69 70 !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) 71 !1 = distinct !DIGlobalVariable(name: "a", linkageName: "\01?a@@3TYYSTYPE@@A", scope: !2, file: !3, line: 2, type: !6, isLocal: false, isDefinition: true) 72 !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang version 5.0.0 ", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5) 73 !3 = !DIFile(filename: "a.cpp", directory: "C:\5Csrc\5Cllvm-project\5Cbuild", checksumkind: CSK_MD5, checksum: "c0005139aa3df153c30d8c6953390a4b") 74 !4 = !{} 75 !5 = !{!0} 76 !6 = !DIDerivedType(tag: DW_TAG_typedef, name: "YYSTYPE", file: !3, line: 1, baseType: !7) 77 !7 = distinct !DICompositeType(tag: DW_TAG_union_type, name: "YYSTYPE", file: !3, line: 1, size: 32, elements: !8, identifier: ".?ATYYSTYPE@@") 78 !8 = !{!9} 79 !9 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !7, file: !3, line: 1, baseType: !10, size: 32) 80 !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 81 !11 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !12, producer: "clang version 5.0.0 ", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4) 82 !12 = !DIFile(filename: "b.cpp", directory: "C:\5Csrc\5Cllvm-project\5Cbuild", checksumkind: CSK_MD5, checksum: "9cfd390d8827beab36769147bb037abc") 83 !13 = !{!"clang version 5.0.0 "} 84 !18 = !{i32 2, !"CodeView", i32 1} 85 !19 = !{i32 2, !"Debug Info Version", i32 3} 86 !20 = !{i32 1, !"PIC Level", i32 2} 87 !21 = distinct !DISubprogram(name: "fn1", linkageName: "\01?fn1@@YAXXZ", scope: !12, file: !12, line: 2, type: !22, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: false, unit: !11, retainedNodes: !4) 88 !22 = !DISubroutineType(types: !23) 89 !23 = !{null} 90 !24 = !DILocalVariable(name: "a", scope: !21, file: !12, line: 2, type: !25) 91 !25 = !DICompositeType(tag: DW_TAG_array_type, baseType: !26, size: 8, elements: !27) 92 !26 = !DIDerivedType(tag: DW_TAG_typedef, name: "YYSTYPE", file: !12, line: 1, baseType: !7) 93 !27 = !{!28} 94 !28 = !DISubrange(count: 1) 95 !29 = !DIExpression() 96 !30 = !DILocation(line: 2, scope: !21) 97
