6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-01-15 07:34:33 +00:00
Code Issues Projects Releases Wiki Activity

When we're updating the subprogram scope DIE, we want to determine if we're

Browse Source 
updating an abstract DIE or not. If we are, then we use that. Its children will
be added on later, as well as the object pointer attribute. Otherwise, this
function may be called with a concrete DIE twice and adding the children and
object pointer attribute to it twice.
<rdar://problem/12401423&12600340>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167524 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling 2012-11-07 04:42:18 +00:00
parent 796f2b02f7
commit a4c7693118
1 changed files with 37 additions and 36 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

73
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
View File

@ -307,47 +307,48 @@ DIE *DwarfDebug::updateSubprogramScopeDIE(CompileUnit *SPCU,
assert(SPDie && "Unable to find subprogram DIE!");
DISubprogram SP(SPNode);
DISubprogram SPDecl = SP.getFunctionDeclaration();
if (!SPDecl.isSubprogram()) {
// There is not any need to generate specification DIE for a function
// defined at compile unit level. If a function is defined inside another
// 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())) {
SPCU->addFlag(SPDie, dwarf::DW_AT_declaration);
// Add arguments.
DICompositeType SPTy = SP.getType();
DIArray Args = SPTy.getTypeArray();
unsigned SPTag = SPTy.getTag();
if (SPTag == dwarf::DW_TAG_subroutine_type)
for (unsigned i = 1, N = Args.getNumElements(); i < N; ++i) {
DIE *Arg = new DIE(dwarf::DW_TAG_formal_parameter);
DIType ATy = DIType(Args.getElement(i));
SPCU->addType(Arg, ATy);
if (ATy.isArtificial())
SPCU->addFlag(Arg, dwarf::DW_AT_artificial);
if (ATy.isObjectPointer())
SPCU->addDIEEntry(SPDie, dwarf::DW_AT_object_pointer,
dwarf::DW_FORM_ref4, Arg);
SPDie->addChild(Arg);
}
DIE *SPDeclDie = SPDie;
SPDie = new DIE(dwarf::DW_TAG_subprogram);
SPCU->addDIEEntry(SPDie, dwarf::DW_AT_specification, dwarf::DW_FORM_ref4,
SPDeclDie);
SPCU->addDie(SPDie);
}
}
// Pick up abstract subprogram DIE.
if (DIE *AbsSPDIE = AbstractSPDies.lookup(SPNode)) {
SPDie = new DIE(dwarf::DW_TAG_subprogram);
SPCU->addDIEEntry(SPDie, dwarf::DW_AT_abstract_origin,
dwarf::DW_FORM_ref4, AbsSPDIE);
SPCU->addDie(SPDie);
} else {
DISubprogram SPDecl = SP.getFunctionDeclaration();
if (!SPDecl.isSubprogram()) {
// There is not any need to generate specification DIE for a function
// defined at compile unit level. If a function is defined inside another
// 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())) {
SPCU->addFlag(SPDie, dwarf::DW_AT_declaration);
// Add arguments.
DICompositeType SPTy = SP.getType();
DIArray Args = SPTy.getTypeArray();
unsigned SPTag = SPTy.getTag();
if (SPTag == dwarf::DW_TAG_subroutine_type)
for (unsigned i = 1, N = Args.getNumElements(); i < N; ++i) {
DIE *Arg = new DIE(dwarf::DW_TAG_formal_parameter);
DIType ATy = DIType(Args.getElement(i));
SPCU->addType(Arg, ATy);
if (ATy.isArtificial())
SPCU->addFlag(Arg, dwarf::DW_AT_artificial);
if (ATy.isObjectPointer())
SPCU->addDIEEntry(SPDie, dwarf::DW_AT_object_pointer,
dwarf::DW_FORM_ref4, Arg);
SPDie->addChild(Arg);
}
DIE *SPDeclDie = SPDie;
SPDie = new DIE(dwarf::DW_TAG_subprogram);
SPCU->addDIEEntry(SPDie, dwarf::DW_AT_specification, dwarf::DW_FORM_ref4,
SPDeclDie);
SPCU->addDie(SPDie);
}
}
}
SPCU->addLabel(SPDie, dwarf::DW_AT_low_pc, dwarf::DW_FORM_addr,
@ -803,7 +804,7 @@ void DwarfDebug::endModule() {
LexicalScope *Scope =
new LexicalScope(NULL, DIDescriptor(SP), NULL, false);
DeadFnScopeMap[SP] = Scope;
// Construct subprogram DIE and add variables DIEs.
CompileUnit *SPCU = CUMap.lookup(TheCU);
assert(SPCU && "Unable to find Compile Unit!");