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Emit DW_TAG_formal_parameter for unnamed parameters.

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This change essentially reverts r87069 which came without a test case. It
causes no regressions in the GDB 7.5 test suite & fixes 25 xfails (commit
to the test suite to follow). If anyone can present a test case that
demonstrates why this check is necessary I'd be happy to account for it in one
way or another.

llvm-svn: 171609
This commit is contained in:
David Blaikie 2013-01-05 07:43:02 +00:00
parent 942e03f627
commit 4f1d3763ec
2 changed files with 14 additions and 9 deletions
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2
lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
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@ -1378,8 +1378,6 @@ void CompileUnit::constructContainingTypeDIEs() {
/// constructVariableDIE - Construct a DIE for the given DbgVariable.
DIE *CompileUnit::constructVariableDIE(DbgVariable *DV, bool isScopeAbstract) {
StringRef Name = DV->getName();
if (Name.empty())
return NULL;
// Translate tag to proper Dwarf tag.
unsigned Tag = DV->getTag();

21
test/DebugInfo/X86/DW_AT_object_pointer.ll
View File

@ -1,20 +1,25 @@
; RUN: llc -mtriple=x86_64-apple-darwin %s -o %t -filetype=obj
; RUN: llvm-dwarfdump %t | FileCheck %s
; CHECK: DW_AT_object_pointer [DW_FORM_ref4] (cu + 0x00bf => {0x000000bf})
; CHECK: 0x000000bf: DW_TAG_formal_parameter [12]
; CHECK-NEXT: DW_AT_name [DW_FORM_strp] ( .debug_str[0x00000085] = "this")
; CHECK: DW_TAG_formal_parameter [
; CHECK: DW_TAG_class_type
; CHECK: DW_AT_object_pointer [DW_FORM_ref4] (cu + 0x00fd => {0x000000fd})
; CHECK: 0x000000fd: DW_TAG_formal_parameter [13]
; CHECK-NEXT: DW_AT_name [DW_FORM_strp] ( .debug_str[0x00000086] = "this")
%class.A = type { i32 }
define i32 @_Z3foov() nounwind uwtable ssp {
define i32 @_Z3fooi(i32) nounwind uwtable ssp {
entry:
%.addr = alloca i32, align 4
%a = alloca %class.A, align 4
store i32 %0, i32* %.addr, align 4
call void @llvm.dbg.declare(metadata !{i32* %.addr}, metadata !36), !dbg !35
call void @llvm.dbg.declare(metadata !{%class.A* %a}, metadata !21), !dbg !23
call void @_ZN1AC1Ev(%class.A* %a), !dbg !24
%m_a = getelementptr inbounds %class.A* %a, i32 0, i32 0, !dbg !25
%0 = load i32* %m_a, align 4, !dbg !25
ret i32 %0, !dbg !25
%1 = load i32* %m_a, align 4, !dbg !25
ret i32 %1, !dbg !25
}
declare void @llvm.dbg.declare(metadata, metadata) nounwind readnone
@ -47,7 +52,7 @@ entry:
!2 = metadata !{i32 0}
!3 = metadata !{metadata !4}
!4 = metadata !{metadata !5, metadata !10, metadata !20}
!5 = metadata !{i32 786478, i32 0, metadata !6, metadata !"foo", metadata !"foo", metadata !"_Z3foov", metadata !6, i32 7, metadata !7, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, i32 ()* @_Z3foov, null, null, metadata !1, i32 7} ; [ DW_TAG_subprogram ] [line 7] [def] [foo]
!5 = metadata !{i32 786478, i32 0, metadata !6, metadata !"foo", metadata !"foo", metadata !"_Z3fooi", metadata !6, i32 7, metadata !7, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, i32 (i32)* @_Z3fooi, null, null, metadata !1, i32 7} ; [ DW_TAG_subprogram ] [line 7] [def] [foo]
!6 = metadata !{i32 786473, metadata !"bar.cpp", metadata !"/Users/echristo/debug-tests", null} ; [ DW_TAG_file_type ]
!7 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !8, i32 0, i32 0} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!8 = metadata !{metadata !9}
@ -63,6 +68,8 @@ entry:
!18 = metadata !{metadata !19}
!19 = metadata !{i32 786468} ; [ DW_TAG_base_type ] [line 0, size 0, align 0, offset 0]
!20 = metadata !{i32 786478, i32 0, null, metadata !"A", metadata !"A", metadata !"_ZN1AC2Ev", metadata !6, i32 3, metadata !11, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, void (%class.A*)* @_ZN1AC2Ev, null, metadata !17, metadata !1, i32 3} ; [ DW_TAG_subprogram ] [line 3] [def] [A]
!36 = metadata !{i32 786689, metadata !5, metadata !"", metadata !6, i32 16777223, metadata !9, i32 0, i32 0} ; [ DW_TAG_arg_variable ] [line 7]
!35 = metadata !{i32 7, i32 0, metadata !5, null}
!21 = metadata !{i32 786688, metadata !22, metadata !"a", metadata !6, i32 8, metadata !14, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [a] [line 8]
!22 = metadata !{i32 786443, metadata !5, i32 7, i32 11, metadata !6, i32 0} ; [ DW_TAG_lexical_block ] [/Users/echristo/debug-tests/bar.cpp]
!23 = metadata !{i32 8, i32 5, metadata !22, null}