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DebugInfo: Support namespace aliases as DW_TAG_imported_declaration instead of DW_TAG_imported_module

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I really should read the spec more often (and test GCC more often too).
I just assumed that namespace aliases would be the same as using
directives, except with a name. But apparently that's not how the DWARF
standards suggests they be implemented. DWARF4 provides an example and
other non-normative text suggesting that namespace aliases be
implemented by named imported declarations intsead of named imported
modules.

So be it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205685 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Blaikie
2014-04-06 06:29:01 +00:00
parent 20384a5583
commit 1c41705d34
3 changed files with 35 additions and 33 deletions
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8
test/DebugInfo/namespace.ll
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@@ -73,13 +73,13 @@
; CHECK-NEXT: DW_AT_decl_line{{.*}}(0x16)
; CHECK-NEXT: DW_AT_import{{.*}}=> {[[I]]})
; CHECK-NOT: NULL
; CHECK: [[X:0x[0-9a-f]*]]:{{ *}}DW_TAG_imported_module
; CHECK: [[X:0x[0-9a-f]*]]:{{ *}}DW_TAG_imported_declaration
; CHECK-NEXT: DW_AT_decl_file{{.*}}(0x0[[F2]])
; CHECK-NEXT: DW_AT_decl_line{{.*}}(0x18)
; CHECK-NEXT: DW_AT_import{{.*}}=> {[[NS1]]})
; CHECK-NEXT: DW_AT_name{{.*}}"X"
; CHECK-NOT: NULL
; CHECK: DW_TAG_imported_module
; CHECK: DW_TAG_imported_declaration
; CHECK-NEXT: DW_AT_decl_file{{.*}}(0x0[[F2]])
; CHECK-NEXT: DW_AT_decl_line{{.*}}(0x19)
; CHECK-NEXT: DW_AT_import{{.*}}=> {[[X]]})
@@ -236,8 +236,8 @@ attributes #1 = { nounwind readnone }
!36 = metadata !{i32 786468}
!37 = metadata !{i32 786440, metadata !14, metadata !10, i32 21} ; [ DW_TAG_imported_declaration ]
!38 = metadata !{i32 786440, metadata !14, metadata !20, i32 22} ; [ DW_TAG_imported_declaration ]
!39 = metadata !{i32 786490, metadata !14, metadata !7, i32 24, metadata !"X"} ; [ DW_TAG_imported_module ]
!40 = metadata !{i32 786490, metadata !14, metadata !39, i32 25, metadata !"Y"} ; [ DW_TAG_imported_module ]
!39 = metadata !{i32 786440, metadata !14, metadata !7, i32 24, metadata !"X"} ; [ DW_TAG_imported_declaration ]
!40 = metadata !{i32 786440, metadata !14, metadata !39, i32 25, metadata !"Y"} ; [ DW_TAG_imported_declaration ]
!41 = metadata !{i32 3, i32 0, metadata !4, null}
!42 = metadata !{i32 786689, metadata !10, metadata !"", metadata !15, i32 16777220, metadata !13, i32 0, i32 0} ; [ DW_TAG_arg_variable ] [line 4]
!43 = metadata !{i32 4, i32 0, metadata !10, null}