Add more debugging output to MachO lld. NFC.

In debug builds there's now a dump method on Section and improved
printing of atoms.

llvm-svn: 255826

1 files changed, 15 insertions, 0 deletions

diff --git a/lld/lib/ReaderWriter/MachO/MachONormalizedFileToAtoms.cpp b/lld/lib/ReaderWriter/MachO/MachONormalizedFileToAtoms.cpp
index 7ed79555722..1c4bb1d4f6a 100644
--- a/lld/lib/ReaderWriter/MachO/MachONormalizedFileToAtoms.cpp
+++ b/lld/lib/ReaderWriter/MachO/MachONormalizedFileToAtoms.cpp
@@ -27,13 +27,17 @@
 #include "MachONormalizedFileBinaryUtils.h"
 #include "lld/Core/Error.h"
 #include "lld/Core/LLVM.h"
+#include "llvm/Support/Debug.h"
 #include "llvm/Support/Format.h"
 #include "llvm/Support/MachO.h"
 #include "llvm/Support/LEB128.h"
+#include "llvm/Support/raw_ostream.h"
 
 using namespace llvm::MachO;
 using namespace lld::mach_o::normalized;
 
+#define DEBUG_TYPE "normalized-file-to-atoms"
+
 namespace lld {
 namespace mach_o {
 
@@ -892,10 +896,13 @@ std::error_code
 normalizedObjectToAtoms(MachOFile *file,
                         const NormalizedFile &normalizedFile,
                         bool copyRefs) {
+  DEBUG(llvm::dbgs() << "******** Normalizing file to atoms: "
+                    << file->path() << "\n");
   bool scatterable = ((normalizedFile.flags & MH_SUBSECTIONS_VIA_SYMBOLS) != 0);
 
   // Create atoms from each section.
   for (auto &sect : normalizedFile.sections) {
+    DEBUG(llvm::dbgs() << "Creating atoms: "; sect.dump());
     if (isDebugInfoSection(sect))
       continue;
     bool customSectionName;
@@ -1061,6 +1068,14 @@ normalizedToAtoms(const NormalizedFile &normalizedFile, StringRef path,
   }
 }
 
+#ifndef NDEBUG
+void Section::dump(llvm::raw_ostream &OS) const {
+  OS << "Section (\"" << segmentName << ", " << sectionName << "\"";
+  OS << ", addr: " << llvm::format_hex(address, 16, true);
+  OS << ", size: " << llvm::format_hex(content.size(), 8, true) << ")\n";
+}
+#endif
+
 } // namespace normalized
 } // namespace mach_o
 } // namespace lld