[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, 10 insertions, 3 deletions

diff --git a/lld/lib/ReaderWriter/CoreLinkingContext.cpp b/lld/lib/ReaderWriter/CoreLinkingContext.cpp
index ec8962bbce2..3b83d297e48 100644
--- a/lld/lib/ReaderWriter/CoreLinkingContext.cpp
+++ b/lld/lib/ReaderWriter/CoreLinkingContext.cpp
@@ -12,6 +12,9 @@
 #include "lld/Core/Pass.h"
 #include "lld/Core/PassManager.h"
 #include "lld/Passes/LayoutPass.h"
+#include "lld/Passes/RoundTripNativePass.h"
+#include "lld/Passes/RoundTripYAMLPass.h"
+#include "lld/ReaderWriter/Simple.h"
 
 #include "llvm/ADT/ArrayRef.h"
 
@@ -149,10 +152,10 @@ private:
   uint32_t _ordinal;
 };
 
-class TestingPassFile : public MutableFile {
+class TestingPassFile : public SimpleFile {
 public:
   TestingPassFile(const LinkingContext &ctx)
-      : MutableFile(ctx, "Testing pass") {}
+      : SimpleFile(ctx, "Testing pass") {}
 
   virtual void addAtom(const Atom &atom) {
     if (const DefinedAtom *defAtom = dyn_cast<DefinedAtom>(&atom))
@@ -277,7 +280,7 @@ bool CoreLinkingContext::validateImpl(raw_ostream &) {
   return true;
 }
 
-void CoreLinkingContext::addPasses(PassManager &pm) const {
+void CoreLinkingContext::addPasses(PassManager &pm) {
   for (StringRef name : _passNames) {
     if (name.equals("layout"))
       pm.add(std::unique_ptr<Pass>((new LayoutPass())));
@@ -288,6 +291,10 @@ void CoreLinkingContext::addPasses(PassManager &pm) const {
     else
       llvm_unreachable("bad pass name");
   }
+#ifndef NDEBUG
+  pm.add(std::unique_ptr<Pass>(new RoundTripYAMLPass(*this)));
+  pm.add(std::unique_ptr<Pass>(new RoundTripNativePass(*this)));
+#endif
 }
 
 Writer &CoreLinkingContext::writer() const { return *_writer; }