[PassManager] add ReaderWriter{Native,YAML} to the Driver.

Enable this for the following flavors

a) core
b) gnu
c) darwin

Its disabled for the flavor PECOFF. Convenient markers are added with FIXME
comments in the Driver that would be removed and code removed from each flavor.

llvm-svn: 193585

1 files changed, 7 insertions, 1 deletions

diff --git a/lld/lib/ReaderWriter/MachO/MachOLinkingContext.cpp b/lld/lib/ReaderWriter/MachO/MachOLinkingContext.cpp
index 69219e5b168..b79fd39a8bc 100644
--- a/lld/lib/ReaderWriter/MachO/MachOLinkingContext.cpp
+++ b/lld/lib/ReaderWriter/MachO/MachOLinkingContext.cpp
@@ -16,6 +16,8 @@
 #include "lld/ReaderWriter/Reader.h"
 #include "lld/ReaderWriter/Writer.h"
 #include "lld/Passes/LayoutPass.h"
+#include "lld/Passes/RoundTripNativePass.h"
+#include "lld/Passes/RoundTripYAMLPass.h"
 
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/ADT/Triple.h"
@@ -235,10 +237,14 @@ bool MachOLinkingContext::setOS(OS os, StringRef minOSVersion) {
   return parsePackedVersion(minOSVersion, _osMinVersion);
 }
 
-void MachOLinkingContext::addPasses(PassManager &pm) const {
+void MachOLinkingContext::addPasses(PassManager &pm) {
   pm.add(std::unique_ptr<Pass>(new mach_o::GOTPass));
   pm.add(std::unique_ptr<Pass>(new mach_o::StubsPass(*this)));
   pm.add(std::unique_ptr<Pass>(new LayoutPass()));
+#ifndef NDEBUG
+  pm.add(std::unique_ptr<Pass>(new RoundTripYAMLPass(*this)));
+  pm.add(std::unique_ptr<Pass>(new RoundTripNativePass(*this)));
+#endif
 }
 
 Writer &MachOLinkingContext::writer() const {