[DWARF] Force a linkage_name on an inlined subprogram's abstract origin.
When we suppress linkage names, for a non-inlined subprogram the name
can still be found in the object-file symbol table, because we have
the code address of the subprogram. This is not necessarily the case
for an inlined subprogram, so we still want to emit the linkage name
in the DWARF. Put this on the abstract-origin DIE because it's common
to all inlined instances.
Differential Revision: http://reviews.llvm.org/D18706
llvm-svn: 266692
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
index 387921c..9003af5 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
@@ -665,7 +665,7 @@
}
void DwarfUnit::addLinkageName(DIE &Die, StringRef LinkageName) {
- if (!LinkageName.empty() && DD->useLinkageNames())
+ if (!LinkageName.empty())
addString(Die,
DD->getDwarfVersion() >= 4 ? dwarf::DW_AT_linkage_name
: dwarf::DW_AT_MIPS_linkage_name,
@@ -1169,7 +1169,9 @@
assert(((LinkageName.empty() || DeclLinkageName.empty()) ||
LinkageName == DeclLinkageName) &&
"decl has a linkage name and it is different");
- if (DeclLinkageName.empty())
+ if (DeclLinkageName.empty() &&
+ // Always emit it for abstract subprograms.
+ (DD->useAllLinkageNames() || DU->getAbstractSPDies().lookup(SP)))
addLinkageName(SPDie, LinkageName);
if (!DeclDie)