lldb-moduleimport-test: handle COFF properly

lldb-moduleimport-test would only check for MachO and ELF object file
formats.  However, Windows uses COFF object files.  Add that to the list
of formats that we check.  This allows us to inspect content built for
Windows.

Author: compnerd

tools/lldb-moduleimport-test/lldb-moduleimport-test.cpp

@@ -25,6 +25,7 @@
 #include "swift/Basic/Dwarf.h"
 #include "llvm/Object/ELFObjectFile.h"
 #include "swift/Basic/LLVMInitialize.h"
+#include "llvm/Object/COFF.h"
 #include "llvm/Object/MachO.h"
 #include "llvm/Object/ObjectFile.h"
 #include "llvm/Support/CommandLine.h"
@@ -133,6 +134,7 @@ collectASTModules(llvm::cl::list<std::string> &InputNames,
     auto *Obj = OF->getBinary();
     auto *MachO = llvm::dyn_cast<llvm::object::MachOObjectFile>(Obj);
     auto *ELF = llvm::dyn_cast<llvm::object::ELFObjectFileBase>(Obj);
+    auto *COFF = llvm::dyn_cast<llvm::object::COFFObjectFile>(Obj);
 
     if (MachO) {
       for (auto &Symbol : Obj->symbols()) {
@@ -164,7 +166,8 @@ collectASTModules(llvm::cl::list<std::string> &InputNames,
       llvm::StringRef Name;
       Section.getName(Name);
       if ((MachO && Name == swift::MachOASTSectionName) ||
-          (ELF && Name == swift::ELFASTSectionName)) {
+          (ELF && Name == swift::ELFASTSectionName) ||
+          (COFF && Name == swift::COFFASTSectionName)) {
         uint64_t Size = Section.getSize();
         StringRef ContentsReference;
         Section.getContents(ContentsReference);