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llvm-project/llvm/test/Bitcode/allocated.ll

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[DebugInfo] Support for DW_AT_associated and DW_AT_allocated. Summary: This support is needed for the Fortran array variables with pointer/allocatable attribute. This support enables debugger to identify the status of variable whether that is currently allocated/associated. for pointer array (before allocation/association) without DW_AT_associated (gdb) pt ptr type = integer (140737345375288:140737354129776) (gdb) p ptr value requires 35017956 bytes, which is more than max-value-size with DW_AT_associated (gdb) pt ptr type = integer (:) (gdb) p ptr $1 = <not associated> for allocatable array (before allocation) without DW_AT_allocated (gdb) pt arr type = integer (140737345375288:140737354129776) (gdb) p arr value requires 35017956 bytes, which is more than max-value-size with DW_AT_allocated (gdb) pt arr type = integer, allocatable (:) (gdb) p arr $1 = <not allocated> Testing - unit test cases added - check-llvm - check-debuginfo Reviewed By: aprantl Differential Revision: https://reviews.llvm.org/D83544
2020-07-20 22:20:37 +08:00
;; This test checks dataLocation field of DICompositeType
; RUN: llvm-as < %s | llvm-dis | llvm-as | llvm-dis | FileCheck %s
;; Test whether DW_AT_data_location is generated.
; CHECK: !DICompositeType(tag: DW_TAG_array_type, baseType: !{{[0-9]+}}, size: 32, align: 32, elements: !{{[0-9]+}}, dataLocation: !{{[0-9]+}}, allocated: !{{[0-9]+}})
; CHECK: !DICompositeType(tag: DW_TAG_array_type, baseType: !{{[0-9]+}}, size: 32, align: 32, elements: !{{[0-9]+}}, dataLocation: !DIExpression(DW_OP_push_object_address, DW_OP_deref), allocated: !DIExpression(DW_OP_push_object_address, DW_OP_deref))
; ModuleID = 'allocated.f90'
source_filename = "/dir/allocated.ll"
!llvm.module.flags = !{!0, !1}
!llvm.dbg.cu = !{!2}
!0 = !{i32 2, !"Dwarf Version", i32 4}
!1 = !{i32 2, !"Debug Info Version", i32 3}
!2 = distinct !DICompileUnit(language: DW_LANG_Fortran90, file: !3, producer: " F90 Flang - 1.5 2017-05-01", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, retainedTypes: !5, globals: !4, imports: !4)
!3 = !DIFile(filename: "allocated.f90", directory: "/dir")
!4 = !{}
!5 = !{!6, !17}
!6 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 32, align: 32, elements: !8, dataLocation: !10, allocated: !15)
!7 = !DIBasicType(name: "integer", size: 32, align: 32, encoding: DW_ATE_signed)
!8 = !{!9}
!9 = !DISubrange(count: 19, lowerBound: 2)
!10 = distinct !DILocalVariable(scope: !11, file: !3, type: !14, flags: DIFlagArtificial)
!11 = distinct !DISubprogram(name: "main", scope: !2, file: !3, line: 1, type: !12, scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagMainSubprogram, unit: !2)
!12 = !DISubroutineType(cc: DW_CC_program, types: !13)
!13 = !{null}
!14 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 32, align: 32)
!15 = distinct !DILocalVariable(scope: !11, file: !3, type: !16, flags: DIFlagArtificial)
!16 = !DIBasicType(name: "logical", size: 32, align: 32, encoding: DW_ATE_signed)
!17 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 32, align: 32, elements: !8, dataLocation: !DIExpression(DW_OP_push_object_address, DW_OP_deref), allocated: !DIExpression(DW_OP_push_object_address, DW_OP_deref))