Repair LLD

Author: mysterymath

lld/ELF/Driver.cpp

@@ -2701,6 +2701,10 @@ static void markBuffersAsDontNeed(Ctx &ctx, bool skipLinkedOutput) {
 template <class ELFT>
 void LinkerDriver::compileBitcodeFiles(bool skipLinkedOutput) {
   llvm::TimeTraceScope timeScope("LTO");
+  // Capture the triple before moving the bitcode into the bitcode compiler.
+  std::optional<llvm::Triple> tt;
+  if (!ctx.bitcodeFiles.empty())
+    tt = llvm::Triple(ctx.bitcodeFiles.front()->obj->getTargetTriple());
   // Compile bitcode files and replace bitcode symbols.
   lto.reset(new BitcodeCompiler(ctx));
   for (BitcodeFile *file : ctx.bitcodeFiles)
@@ -2711,9 +2715,7 @@ void LinkerDriver::compileBitcodeFiles(bool skipLinkedOutput) {
   SmallVector<StringRef> bitcodeLibFuncs;
   if (!ctx.bitcodeFiles.empty()) {
     markBuffersAsDontNeed(ctx, skipLinkedOutput);
-
-    llvm::Triple tt(ctx.bitcodeFiles.front()->obj->getTargetTriple());
-    for (StringRef libFunc : lto::LTO::getLibFuncSymbols(tt, saver)) {
+    for (StringRef libFunc : lto::LTO::getLibFuncSymbols(*tt, saver)) {
       Symbol *sym = ctx.symtab->find(libFunc);
       if (!sym)
         continue;