[AIX][llvm-ar] Use the Correct Kind for Bitcode File Inputs

On AIX, when the input files are LLVM bitcode files, `llvm-ar` should set the archive kind to `K_AIXBIG` as well, instead of leaving it to the default `K_GNU`.

Reviewed By: daltenty

Differential Revision: https://reviews.llvm.org/D149377

1 files changed, 4 insertions, 2 deletions

diff --git a/llvm/lib/Object/ArchiveWriter.cpp b/llvm/lib/Object/ArchiveWriter.cpp
index e9b8811..1a540e2 100644
--- a/llvm/lib/Object/ArchiveWriter.cpp
+++ b/llvm/lib/Object/ArchiveWriter.cpp
@@ -76,9 +76,11 @@ object::Archive::Kind NewArchiveMember::detectKindFromObject() const {
     if (auto ObjOrErr = object::SymbolicFile::createSymbolicFile(
             MemBufferRef, file_magic::bitcode, &Context)) {
       auto &IRObject = cast<object::IRObjectFile>(**ObjOrErr);
-      return Triple(IRObject.getTargetTriple()).isOSDarwin()
+      auto TargetTriple = Triple(IRObject.getTargetTriple());
+      return TargetTriple.isOSDarwin()
                  ? object::Archive::K_DARWIN
-                 : object::Archive::K_GNU;
+                 : (TargetTriple.isOSAIX() ? object::Archive::K_AIXBIG
+                                           : object::Archive::K_GNU);
     } else {
       // Squelch the error in case this was not a SymbolicFile.
       consumeError(ObjOrErr.takeError());