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Debug Info: In DIBuilder, the context field of subprogram is updated to use

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DIScopeRef.

A paired commit at clang is required due to changes to DIBuilder.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192378 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Manman Ren 2013-10-10 18:40:01 +00:00
parent 75a3ad485c
commit b8e48a636e
8 changed files with 56 additions and 12 deletions
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14
include/llvm/DIBuilder.h
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@ -562,6 +562,20 @@ namespace llvm {
MDNode *TParam = 0,
MDNode *Decl = 0);
/// FIXME: this is added for dragonegg. Once we update dragonegg
/// to call resolve function, this will be removed.
DISubprogram createFunction(DIScopeRef Scope, StringRef Name,
StringRef LinkageName,
DIFile File, unsigned LineNo,
DICompositeType Ty, bool isLocalToUnit,
bool isDefinition,
unsigned ScopeLine,
unsigned Flags = 0,
bool isOptimized = false,
Function *Fn = 0,
MDNode *TParam = 0,
MDNode *Decl = 0);
/// createMethod - Create a new descriptor for the specified C++ method.
/// See comments in DISubprogram for descriptions of these fields.
/// @param Scope Function scope.

2
include/llvm/DebugInfo.h
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@ -434,7 +434,7 @@ class DISubprogram : public DIScope {
public:
explicit DISubprogram(const MDNode *N = 0) : DIScope(N) {}
DIScope getContext() const { return getFieldAs<DIScope>(2); }
DIScopeRef getContext() const { return getFieldAs<DIScopeRef>(2); }
StringRef getName() const { return getStringField(3); }
StringRef getDisplayName() const { return getStringField(4); }
StringRef getLinkageName() const { return getStringField(5); }

2
lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
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@ -1300,7 +1300,7 @@ DIE *CompileUnit::getOrCreateSubprogramDIE(DISubprogram SP) {
// Construct the context before querying for the existence of the DIE in case
// such construction creates the DIE (as is the case for member function
// declarations).
DIE *ContextDIE = getOrCreateContextDIE(SP.getContext());
DIE *ContextDIE = getOrCreateContextDIE(resolve(SP.getContext()));
if (!ContextDIE)
ContextDIE = CUDie.get();

7
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
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@ -393,9 +393,10 @@ DIE *DwarfDebug::updateSubprogramScopeDIE(CompileUnit *SPCU,
// function then gdb prefers the definition at top level and but does not
// expect specification DIE in parent function. So avoid creating
// specification DIE for a function defined inside a function.
if (SP.isDefinition() && !SP.getContext().isCompileUnit() &&
!SP.getContext().isFile() &&
!isSubprogramContext(SP.getContext())) {
DIScope SPContext = resolve(SP.getContext());
if (SP.isDefinition() && !SPContext.isCompileUnit() &&
!SPContext.isFile() &&
!isSubprogramContext(SPContext)) {
SPCU->addFlag(SPDie, dwarf::DW_AT_declaration);
// Add arguments.

26
lib/IR/DIBuilder.cpp
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@ -1040,6 +1040,28 @@ DIVariable DIBuilder::createComplexVariable(unsigned Tag, DIDescriptor Scope,
return DIVariable(MDNode::get(VMContext, Elts));
}
/// createFunction - Create a new descriptor for the specified function.
/// FIXME: this is added for dragonegg. Once we update dragonegg
/// to call resolve function, this will be removed.
DISubprogram DIBuilder::createFunction(DIScopeRef Context,
StringRef Name,
StringRef LinkageName,
DIFile File, unsigned LineNo,
DICompositeType Ty,
bool isLocalToUnit, bool isDefinition,
unsigned ScopeLine,
unsigned Flags, bool isOptimized,
Function *Fn,
MDNode *TParams,
MDNode *Decl) {
// dragonegg does not generate identifier for types, so using an empty map
// to resolve the context should be fine.
DITypeIdentifierMap EmptyMap;
return createFunction(Context.resolve(EmptyMap), Name, LinkageName, File,
LineNo, Ty, isLocalToUnit, isDefinition, ScopeLine,
Flags, isOptimized, Fn, TParams, Decl);
}
/// createFunction - Create a new descriptor for the specified function.
DISubprogram DIBuilder::createFunction(DIDescriptor Context,
StringRef Name,
@ -1058,7 +1080,7 @@ DISubprogram DIBuilder::createFunction(DIDescriptor Context,
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_subprogram),
File.getFileNode(),
getNonCompileUnitScope(Context),
DIScope(getNonCompileUnitScope(Context)).getRef(),
MDString::get(VMContext, Name),
MDString::get(VMContext, Name),
MDString::get(VMContext, LinkageName),
@ -1107,7 +1129,7 @@ DISubprogram DIBuilder::createMethod(DIDescriptor Context,
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_subprogram),
F.getFileNode(),
getNonCompileUnitScope(Context),
DIScope(getNonCompileUnitScope(Context)).getRef(),
MDString::get(VMContext, Name),
MDString::get(VMContext, Name),
MDString::get(VMContext, LinkageName),

6
lib/IR/DebugInfo.cpp
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@ -511,8 +511,8 @@ bool DISubprogram::Verify() const {
if (!isSubprogram())
return false;
// Make sure context @ field 2 and type @ field 7 are MDNodes.
if (!fieldIsMDNode(DbgNode, 2))
// Make sure context @ field 2 is a ScopeRef and type @ field 7 is a MDNode.
if (!fieldIsScopeRef(DbgNode, 2))
return false;
if (!fieldIsMDNode(DbgNode, 7))
return false;
@ -1071,7 +1071,7 @@ void DebugInfoFinder::processLexicalBlock(DILexicalBlock LB) {
void DebugInfoFinder::processSubprogram(DISubprogram SP) {
if (!addSubprogram(SP))
return;
processScope(SP.getContext());
processScope(SP.getContext().resolve(TypeIdentifierMap));
processType(SP.getType());
DIArray TParams = SP.getTemplateParams();
for (unsigned I = 0, E = TParams.getNumElements(); I != E; ++I) {

9
test/DebugInfo/tu-composite.ll
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@ -6,9 +6,16 @@
; Make sure we correctly handle containing type of a struct being a type identifier.
; CHECK-NEXT: DW_AT_containing_type [DW_FORM_ref4] (cu + {{.*}} => {[[TYPE]]})
; CHECK-NEXT: DW_AT_name [DW_FORM_strp] {{.*}}= "C")
; Make sure we correctly handle context of a subprogram being a type identifier.
; CHECK: [[SP:.*]]: DW_TAG_subprogram
; CHECK: DW_AT_name [DW_FORM_strp] {{.*}}= "foo")
; Make sure we correctly handle containing type of a subprogram being a type identifier.
; CHECK: DW_AT_containing_type [DW_FORM_ref4] (cu + {{.*}} => {[[TYPE]]})
; CHECK: DW_TAG_formal_parameter
; CHECK: NULL
; CHECK: NULL
; CHECK: [[TYPE2:.*]]: DW_TAG_structure_type
; CHECK: DW_TAG_structure_type
; CHECK: DW_AT_name [DW_FORM_strp] {{.*}}= "D")
@ -128,7 +135,7 @@ attributes #1 = { nounwind readnone }
!10 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !11, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!11 = metadata !{metadata !12}
!12 = metadata !{i32 786468, null, null, metadata !"int", 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]
!13 = metadata !{i32 786478, metadata !1, metadata !4, metadata !"foo", metadata !"foo", metadata !"_ZN1C3fooEv", i32 2, metadata !14, i1 false, i1 false, i32 1, i32 0, metadata !"_ZTS1C", i32 256, i1 false, null, null, i32 0, metadata !17, i32 2} ; [ DW_TAG_subprogram ] [line 2] [foo]
!13 = metadata !{i32 786478, metadata !1, metadata !"_ZTS1C", metadata !"foo", metadata !"foo", metadata !"_ZN1C3fooEv", i32 2, metadata !14, i1 false, i1 false, i32 1, i32 0, metadata !"_ZTS1C", i32 256, i1 false, null, null, i32 0, metadata !17, i32 2} ; [ DW_TAG_subprogram ] [line 2] [foo]
!14 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !15, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!15 = metadata !{null, metadata !16}
!16 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 1088, metadata !"_ZTS1C"} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [artificial] [from _ZTS1C]

2
tools/opt/opt.cpp
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@ -404,7 +404,7 @@ struct BreakpointPrinter : public ModulePass {
"A MDNode in llvm.dbg.sp should be null or a DISubprogram.");
if (!SP)
continue;
getContextName(SP.getContext(), Name);
getContextName(SP.getContext().resolve(TypeIdentifierMap), Name);
Name = Name + SP.getDisplayName().str();
if (!Name.empty() && Processed.insert(Name)) {
Out << Name << "\n";