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Differential D33621 Diff 101280 lld/ELF/Driver.cpp

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lld/ELF/Driver.cpp

Show First 20 Lines • Show All 963 Lines • ▼ Show 20 Lines	template <class ELFT> void LinkerDriver::link(opt::InputArgList &Args) {
// Return if there were name resolution errors.		// Return if there were name resolution errors.
if (ErrorCount)		if (ErrorCount)
return;		return;

Symtab.scanUndefinedFlags();		Symtab.scanUndefinedFlags();
Symtab.scanShlibUndefined();		Symtab.scanShlibUndefined();
Symtab.scanVersionScript();		Symtab.scanVersionScript();

		// Pass wrapped symbols to LTO
		pccUnsubmitted Done Reply Inline Actions This comment and the one below aren't really accurate any more because this code is used in the non-LTO case as well. pcc: This comment and the one below aren't really accurate any more because this code is used in the…
		ruiuUnsubmitted Done Reply Inline Actions I prefer a more concrete comment. `Handle -wrap option`. ruiu: I prefer a more concrete comment. `Handle -wrap option`.
		for (auto *Arg : Args.filtered(OPT_wrap))
		Symtab.addSymbolWrap(Arg->getValue());

		// Pass alias symbols to LTO
		ruiuUnsubmitted Done Reply Inline Actions Ditto. `Handle --defsym=sym=alias option.` ruiu: Ditto. `Handle --defsym=sym=alias option.`
		for (std::pair<StringRef, StringRef> &Def : getDefsym(Args))
		Symtab.addSymbolAlias(Def.first, Def.second);

Symtab.addCombinedLTOObject();		Symtab.addCombinedLTOObject();
if (ErrorCount)		if (ErrorCount)
return;		return;

// Some symbols (such as __ehdr_start) are defined lazily only when there		// Some symbols (such as __ehdr_start) are defined lazily only when there
// are undefined symbols for them, so we add these to trigger that logic.		// are undefined symbols for them, so we add these to trigger that logic.
for (StringRef Sym : Script->Opt.ReferencedSymbols)		for (StringRef Sym : Script->Opt.ReferencedSymbols)
Symtab.addUndefined(Sym);		Symtab.addUndefined(Sym);

for (auto *Arg : Args.filtered(OPT_wrap))		// Apply symbol renames for -wrap and -defsym
Symtab.wrap(Arg->getValue());		Symtab.applySymbolRenames();

// Handle --defsym=sym=alias option.
for (std::pair<StringRef, StringRef> &Def : getDefsym(Args))
Symtab.alias(Def.first, Def.second);

// Now that we have a complete list of input files.		// Now that we have a complete list of input files.
// Beyond this point, no new files are added.		// Beyond this point, no new files are added.
// Aggregate all input sections into one place.		// Aggregate all input sections into one place.
for (elf::ObjectFile<ELFT> *F : Symtab.getObjectFiles())		for (elf::ObjectFile<ELFT> *F : Symtab.getObjectFiles())
for (InputSectionBase *S : F->getSections())		for (InputSectionBase *S : F->getSections())
if (S && S != &InputSection::Discarded)		if (S && S != &InputSection::Discarded)
InputSections.push_back(S);		InputSections.push_back(S);
Show All 25 Lines