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llvm-mirror/test/DebugInfo/X86/empty-array.ll

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Add a 'count' field to the DWARF subrange. The count field is necessary because there isn't a difference between the 'lo' and 'hi' attributes for a one-element array and a zero-element array. When the count is '0', we know that this is a zero-element array. When it's >=1, then it's a normal constant sized array. When it's -1, then the array is unbounded. llvm-svn: 169218
2012-12-04 07:20:49 +01:00
; RUN: llc -mtriple=x86_64-apple-darwin -O0 -filetype=obj -o %t < %s
; RUN: llvm-dwarfdump %t | FileCheck %s
; <rdar://problem/12566646>
%class.A = type { [0 x i32] }
@a = global %class.A zeroinitializer, align 4
; CHECK: 0x0000002d: DW_TAG_base_type [3]
; CHECK-NEXT: 0x0000002e: DW_AT_byte_size [DW_FORM_data1] (0x04)
; CHECK-NEXT: 0x0000002f: DW_AT_encoding [DW_FORM_data1] (0x05)
; CHECK: 0x00000030: DW_TAG_array_type [4] *
; CHECK-NEXT: 0x00000031: DW_AT_type [DW_FORM_ref4] (cu + 0x0026 => {0x00000026})
; CHECK: 0x00000035: DW_TAG_subrange_type [5]
; CHECK-NEXT: 0x00000036: DW_AT_type [DW_FORM_ref4] (cu + 0x002d => {0x0000002d})
Use the 'count' attribute to calculate the upper bound of an array. The count attribute is more accurate with regards to the size of an array. It also obviates the upper bound attribute in the subrange. We can also better handle an unbound array by setting the count to -1 instead of the lower bound to 1 and upper bound to 0. llvm-svn: 169312
2012-12-04 22:34:03 +01:00
; CHECK-NOT: DW_AT_upper_bound
Add a 'count' field to the DWARF subrange. The count field is necessary because there isn't a difference between the 'lo' and 'hi' attributes for a one-element array and a zero-element array. When the count is '0', we know that this is a zero-element array. When it's >=1, then it's a normal constant sized array. When it's -1, then the array is unbounded. llvm-svn: 169218
2012-12-04 07:20:49 +01:00
; CHECK: 0x00000048: DW_TAG_member [8]
; CHECK-NEXT: 0x00000049: DW_AT_name [DW_FORM_strp] ( .debug_str[0x0000003f] = "x")
; CHECK-NEXT: 0x0000004d: DW_AT_type [DW_FORM_ref4] (cu + 0x0030 => {0x00000030})
!llvm.dbg.cu = !{!0}
!0 = metadata !{i32 786449, i32 0, i32 4, metadata !"t.cpp", metadata !"/Volumes/Sandbox/llvm", metadata !"clang version 3.3 (trunk 169136)", i1 true, i1 false, metadata !"", i32 0, metadata !1, metadata !1, metadata !1, metadata !3} ; [ DW_TAG_compile_unit ] [/Volumes/Sandbox/llvm/t.cpp] [DW_LANG_C_plus_plus]
!1 = metadata !{metadata !2}
!2 = metadata !{i32 0}
!3 = metadata !{metadata !4}
!4 = metadata !{metadata !5}
!5 = metadata !{i32 786484, i32 0, null, metadata !"a", metadata !"a", metadata !"", metadata !6, i32 1, metadata !7, i32 0, i32 1, %class.A* @a} ; [ DW_TAG_variable ] [a] [line 1] [def]
!6 = metadata !{i32 786473, metadata !"t.cpp", metadata !"/Volumes/Sandbox/llvm", null} ; [ DW_TAG_file_type ]
!7 = metadata !{i32 786434, null, metadata !"A", metadata !6, i32 1, i64 0, i64 32, i32 0, i32 0, null, metadata !8, i32 0, null, null} ; [ DW_TAG_class_type ] [A] [line 1, size 0, align 32, offset 0] [from ]
!8 = metadata !{metadata !9, metadata !14}
!9 = metadata !{i32 786445, metadata !7, metadata !"x", metadata !6, i32 1, i64 0, i64 0, i64 0, i32 1, metadata !10} ; [ DW_TAG_member ] [x] [line 1, size 0, align 0, offset 0] [private] [from ]
!10 = metadata !{i32 786433, null, metadata !"", null, i32 0, i64 0, i64 32, i32 0, i32 0, metadata !11, metadata !12, i32 0, i32 0} ; [ DW_TAG_array_type ] [line 0, size 0, align 32, offset 0] [from int]
!11 = metadata !{i32 786468, null, metadata !"int", null, i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
!12 = metadata !{metadata !13}
Use the 'count' attribute to calculate the upper bound of an array. The count attribute is more accurate with regards to the size of an array. It also obviates the upper bound attribute in the subrange. We can also better handle an unbound array by setting the count to -1 instead of the lower bound to 1 and upper bound to 0. llvm-svn: 169312
2012-12-04 22:34:03 +01:00
!13 = metadata !{i32 786465, i64 0, i64 -1} ; [ DW_TAG_subrange_type ] [unbound]
Add a 'count' field to the DWARF subrange. The count field is necessary because there isn't a difference between the 'lo' and 'hi' attributes for a one-element array and a zero-element array. When the count is '0', we know that this is a zero-element array. When it's >=1, then it's a normal constant sized array. When it's -1, then the array is unbounded. llvm-svn: 169218
2012-12-04 07:20:49 +01:00
!14 = metadata !{i32 786478, i32 0, metadata !7, metadata !"A", metadata !"A", metadata !"", metadata !6, i32 1, metadata !15, i1 false, i1 false, i32 0, i32 0, null, i32 320, i1 false, null, null, i32 0, metadata !18, i32 1} ; [ DW_TAG_subprogram ] [line 1] [A]
!15 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !16, i32 0, i32 0} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!16 = metadata !{null, metadata !17}
!17 = metadata !{i32 786447, i32 0, metadata !"", i32 0, i32 0, i64 64, i64 64, i64 0, i32 1088, metadata !7} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from A]
!18 = metadata !{metadata !19}
!19 = metadata !{i32 786468} ; [ DW_TAG_base_type ] [line 0, size 0, align 0, offset 0]
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