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DebugInfo: Remove DW_TAG_constant

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Remove handling for DW_TAG_constant.  We started producing it in
r110656, but reverted that in r110876 without dropping the support.
Finish the job.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228623 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith
2015-02-09 22:48:04 +00:00
parent 9a61a8236f
commit 99cc7e5307
4 changed files with 1 additions and 35 deletions
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1
docs/SourceLevelDebugging.rst
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@@ -1807,7 +1807,6 @@ tag is one of:
* DW_TAG_subrange_type
* DW_TAG_base_type
* DW_TAG_const_type
* DW_TAG_constant
* DW_TAG_file_type
* DW_TAG_namelist
* DW_TAG_packed_type

1
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
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@@ -1559,7 +1559,6 @@ static dwarf::PubIndexEntryDescriptor computeIndexValue(DwarfUnit *CU,
return dwarf::GIEK_TYPE;
case dwarf::DW_TAG_subprogram:
return dwarf::PubIndexEntryDescriptor(dwarf::GIEK_FUNCTION, Linkage);
case dwarf::DW_TAG_constant:
case dwarf::DW_TAG_variable:
return dwarf::PubIndexEntryDescriptor(dwarf::GIEK_VARIABLE, Linkage);
case dwarf::DW_TAG_enumerator:

3
lib/IR/DebugInfo.cpp
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@@ -254,8 +254,7 @@ bool DIDescriptor::isSubprogram() const {
}
bool DIDescriptor::isGlobalVariable() const {
return DbgNode && (getTag() == dwarf::DW_TAG_variable ||
getTag() == dwarf::DW_TAG_constant);
return DbgNode && getTag() == dwarf::DW_TAG_variable;
}
bool DIDescriptor::isScope() const {

31
test/DebugInfo/X86/2010-08-10-DbgConstant.ll
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@@ -1,31 +0,0 @@
; RUN: llc -mtriple=i686-linux -O0 -filetype=obj -o %t %s
; RUN: llvm-dwarfdump -debug-dump=info %t | FileCheck %s
; CHECK: DW_TAG_constant
; CHECK-NEXT: DW_AT_name [DW_FORM_strp] ( .debug_str[0x{{[0-9a-f]*}}] = "ro")
define void @foo() nounwind ssp {
entry:
call void @bar(i32 201), !dbg !8
ret void, !dbg !8
}
declare void @bar(i32)
!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!13}
!0 = !{!"0x2e\00foo\00foo\00foo\003\000\001\000\006\000\000\003", !12, !1, !3, null, void ()* @foo, null, null, null} ; [ DW_TAG_subprogram ]
!1 = !{!"0x29", !12} ; [ DW_TAG_file_type ]
!2 = !{!"0x11\0012\00clang 2.8\000\00\000\00\000", !12, !4, !4, !10, !11, !14} ; [ DW_TAG_compile_unit ]
!3 = !{!"0x15\00\000\000\000\000\000\000", !12, !1, null, !4, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!4 = !{null}
!5 = !{!"0x27\00ro\00ro\00ro\001\001\001", !1, !1, !6, i32 201, null} ; [ DW_TAG_constant ]
!6 = !{!"0x26\00\000\000\000\000\000", !12, !1, !7} ; [ DW_TAG_const_type ]
!7 = !{!"0x24\00unsigned int\000\0032\0032\000\000\007", !12, !1} ; [ DW_TAG_base_type ]
!8 = !MDLocation(line: 3, column: 14, scope: !9)
!9 = !{!"0xb\003\0012\000", !12, !0} ; [ DW_TAG_lexical_block ]
!10 = !{!0}
!11 = !{!5}
!12 = !{!"/tmp/l.c", !"/Volumes/Lalgate/clean/D"}
!13 = !{i32 1, !"Debug Info Version", i32 2}
!14 = !{}