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Make sure that if we're going to attempt to add a type to a DIE that

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the type exists.

Fix up cases where we weren't checking for optional types and add
an assert to addType to make sure we catch this in the future.

Fix up a testcase that was using the tag for DW_TAG_array_type
when it meant DW_TAG_enumeration_type.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187963 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Christopher 2013-08-08 07:40:37 +00:00
parent afdd1f8a85
commit dc1363f5af
4 changed files with 27 additions and 16 deletions
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26
lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
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@ -776,8 +776,7 @@ DIE *CompileUnit::getOrCreateTypeDIE(const MDNode *TyNode) {
/// addType - Add a new type attribute to the specified entity.
void CompileUnit::addType(DIE *Entity, DIType Ty, uint16_t Attribute) {
if (!Ty.isType())
return;
assert(Ty && "Trying to add a type that doesn't exist?");
// Check for pre-existence.
DIEEntry *Entry = getDIEEntry(Ty);
@ -863,7 +862,8 @@ void CompileUnit::constructTypeDIE(DIE &Buffer, DIDerivedType DTy) {
// Map to main type, void will not have a type.
DIType FromTy = DTy.getTypeDerivedFrom();
addType(&Buffer, FromTy);
if (FromTy)
addType(&Buffer, FromTy);
// Add name if not anonymous or intermediate type.
if (!Name.empty())
@ -947,10 +947,11 @@ void CompileUnit::constructTypeDIE(DIE &Buffer, DICompositeType CTy) {
}
break;
case dwarf::DW_TAG_subroutine_type: {
// Add return type.
// Add return type. A void return won't have a type.
DIArray Elements = CTy.getTypeArray();
DIDescriptor RTy = Elements.getElement(0);
addType(&Buffer, DIType(RTy));
if (RTy)
addType(&Buffer, DIType(RTy));
bool isPrototyped = true;
// Add arguments.
@ -1137,7 +1138,11 @@ CompileUnit::getOrCreateTemplateValueParameterDIE(DITemplateValueParameter VP) {
return ParamDIE;
ParamDIE = new DIE(VP.getTag());
addType(ParamDIE, VP.getType());
// Add the type if there is one, template template and template parameter
// packs will not have a type.
if (VP.getType())
addType(ParamDIE, VP.getType());
if (!VP.getName().empty())
addString(ParamDIE, dwarf::DW_AT_name, VP.getName());
if (Value *Val = VP.getValue()) {
@ -1246,13 +1251,14 @@ DIE *CompileUnit::getOrCreateSubprogramDIE(DISubprogram SP) {
Language == dwarf::DW_LANG_ObjC))
addFlag(SPDie, dwarf::DW_AT_prototyped);
// Add Return Type.
// Add Return Type. A void return type will not have a type.
DICompositeType SPTy = SP.getType();
assert(SPTy.getTag() == dwarf::DW_TAG_subroutine_type &&
"the type of a subprogram should be a subroutine");
DIArray Args = SPTy.getTypeArray();
addType(SPDie, DIType(Args.getElement(0)));
if (Args.getElement(0))
addType(SPDie, DIType(Args.getElement(0)));
unsigned VK = SP.getVirtuality();
if (VK) {
@ -1502,9 +1508,8 @@ void CompileUnit::constructArrayTypeDIE(DIE &Buffer,
if (CTy->isVector())
addFlag(&Buffer, dwarf::DW_AT_GNU_vector);
// Emit derived type.
// Emit the element type.
addType(&Buffer, CTy->getTypeDerivedFrom());
DIArray Elements = CTy->getTypeArray();
// Get an anonymous type for index type.
// FIXME: This type should be passed down from the front end
@ -1522,6 +1527,7 @@ void CompileUnit::constructArrayTypeDIE(DIE &Buffer,
}
// Add subranges to array type.
DIArray Elements = CTy->getTypeArray();
for (unsigned i = 0, N = Elements.getNumElements(); i < N; ++i) {
DIDescriptor Element = Elements.getElement(i);
if (Element.getTag() == dwarf::DW_TAG_subrange_type)

1
lib/IR/DIBuilder.cpp
View File

@ -759,7 +759,6 @@ DICompositeType DIBuilder::createArrayType(uint64_t Size, uint64_t AlignInBits,
/// createVectorType - Create debugging information entry for a vector.
DICompositeType DIBuilder::createVectorType(uint64_t Size, uint64_t AlignInBits,
DIType Ty, DIArray Subscripts) {
// A vector is an array type with the FlagVector flag applied.
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_array_type),

6
lib/IR/DebugInfo.cpp
View File

@ -483,6 +483,12 @@ bool DICompositeType::Verify() const {
if (!fieldIsMDNode(DbgNode, 12))
return false;
// If this is an array type verify that we have a DIType in the derived type
// field as that's the type of our element.
if (getTag() == dwarf::DW_TAG_array_type)
if (!DIType(getTypeDerivedFrom()))
return false;
return DbgNode->getNumOperands() >= 10 && DbgNode->getNumOperands() <= 14;
}

10
test/CodeGen/ARM/debug-info-blocks.ll
View File

@ -95,25 +95,25 @@ define hidden void @foobar_func_block_invoke_0(i8* %.block_descriptor, %0* %load
!llvm.dbg.cu = !{!0}
!0 = metadata !{i32 786449, metadata !153, i32 16, metadata !"Apple clang version 2.1", i1 false, metadata !"", i32 2, metadata !147, metadata !26, metadata !148, null, null, metadata !""} ; [ DW_TAG_compile_unit ]
!1 = metadata !{i32 786433, metadata !160, metadata !0, metadata !"", i32 248, i64 32, i64 32, i32 0, i32 0, i32 0, metadata !3, i32 0, i32 0} ; [ DW_TAG_enumeration_type ]
!1 = metadata !{i32 786436, metadata !160, metadata !0, metadata !"", i32 248, i64 32, i64 32, i32 0, i32 0, i32 0, metadata !3, i32 0, i32 0} ; [ DW_TAG_enumeration_type ]
!2 = metadata !{i32 786473, metadata !160} ; [ DW_TAG_file_type ]
!3 = metadata !{metadata !4}
!4 = metadata !{i32 786472, metadata !"Ver1", i64 0} ; [ DW_TAG_enumerator ]
!5 = metadata !{i32 786433, metadata !160, metadata !0, metadata !"Mode", i32 79, i64 32, i64 32, i32 0, i32 0, i32 0, metadata !7, i32 0, i32 0} ; [ DW_TAG_enumeration_type ]
!5 = metadata !{i32 786436, metadata !160, metadata !0, metadata !"Mode", i32 79, i64 32, i64 32, i32 0, i32 0, i32 0, metadata !7, i32 0, i32 0} ; [ DW_TAG_enumeration_type ]
!6 = metadata !{i32 786473, metadata !161} ; [ DW_TAG_file_type ]
!7 = metadata !{metadata !8}
!8 = metadata !{i32 786472, metadata !"One", i64 0} ; [ DW_TAG_enumerator ]
!9 = metadata !{i32 786433, metadata !149, metadata !0, metadata !"", i32 15, i64 32, i64 32, i32 0, i32 0, i32 0, metadata !11, i32 0, i32 0} ; [ DW_TAG_enumeration_type ]
!9 = metadata !{i32 786436, metadata !149, metadata !0, metadata !"", i32 15, i64 32, i64 32, i32 0, i32 0, i32 0, metadata !11, i32 0, i32 0} ; [ DW_TAG_enumeration_type ]
!10 = metadata !{i32 786473, metadata !149} ; [ DW_TAG_file_type ]
!11 = metadata !{metadata !12, metadata !13}
!12 = metadata !{i32 786472, metadata !"Unknown", i64 0} ; [ DW_TAG_enumerator ]
!13 = metadata !{i32 786472, metadata !"Known", i64 1} ; [ DW_TAG_enumerator ]
!14 = metadata !{i32 786433, metadata !150, metadata !0, metadata !"", i32 20, i64 32, i64 32, i32 0, i32 0, i32 0, metadata !16, i32 0, i32 0} ; [ DW_TAG_enumeration_type ]
!14 = metadata !{i32 786436, metadata !150, metadata !0, metadata !"", i32 20, i64 32, i64 32, i32 0, i32 0, i32 0, metadata !16, i32 0, i32 0} ; [ DW_TAG_enumeration_type ]
!15 = metadata !{i32 786473, metadata !150} ; [ DW_TAG_file_type ]
!16 = metadata !{metadata !17, metadata !18}
!17 = metadata !{i32 786472, metadata !"Single", i64 0} ; [ DW_TAG_enumerator ]
!18 = metadata !{i32 786472, metadata !"Double", i64 1} ; [ DW_TAG_enumerator ]
!19 = metadata !{i32 786433, metadata !151, metadata !0, metadata !"", i32 14, i64 32, i64 32, i32 0, i32 0, i32 0, metadata !21, i32 0, i32 0} ; [ DW_TAG_enumeration_type ]
!19 = metadata !{i32 786436, metadata !151, metadata !0, metadata !"", i32 14, i64 32, i64 32, i32 0, i32 0, i32 0, metadata !21, i32 0, i32 0} ; [ DW_TAG_enumeration_type ]
!20 = metadata !{i32 786473, metadata !151} ; [ DW_TAG_file_type ]
!21 = metadata !{metadata !22}
!22 = metadata !{i32 786472, metadata !"Eleven", i64 0} ; [ DW_TAG_enumerator ]