MC: Remove implicit ilist iterator conversions, NFC

llvm-svn: 249922

llvm/lib/MC/MCAssembler.cpp

@@ -1095,7 +1095,7 @@ bool MCAssembler::layoutSectionOnce(MCAsmLayout &Layout, MCSection &Sec) {
       break;
     }
     if (RelaxedFrag && !FirstRelaxedFragment)
-      FirstRelaxedFragment = I;
+      FirstRelaxedFragment = &*I;
   }
   if (FirstRelaxedFragment) {
     Layout.invalidateFragmentsFrom(FirstRelaxedFragment);

llvm/lib/MC/MCMachOStreamer.cpp

@@ -472,7 +472,7 @@ void MCMachOStreamer::FinishImpl() {
     const MCSymbol *CurrentAtom = nullptr;
     for (MCSection::iterator it2 = it->begin(), ie2 = it->end(); it2 != ie2;
          ++it2) {
-      if (const MCSymbol *Symbol = DefiningSymbolMap.lookup(it2))
+      if (const MCSymbol *Symbol = DefiningSymbolMap.lookup(&*it2))
         CurrentAtom = Symbol;
       it2->setAtom(CurrentAtom);
     }

llvm/lib/MC/MCObjectStreamer.cpp

@@ -94,7 +94,7 @@ MCFragment *MCObjectStreamer::getCurrentFragment() const {
   assert(getCurrentSectionOnly() && "No current section!");
 
   if (CurInsertionPoint != getCurrentSectionOnly()->getFragmentList().begin())
-    return std::prev(CurInsertionPoint);
+    return &*std::prev(CurInsertionPoint);
 
   return nullptr;
 }

llvm/lib/MC/MCSection.cpp

@@ -72,7 +72,7 @@ MCSection::getSubsectionInsertionPoint(unsigned Subsection) {
   if (MI == SubsectionFragmentMap.end())
     IP = end();
   else
-    IP = MI->second;
+    IP = MI->second->getIterator();
   if (!ExactMatch && Subsection != 0) {
     // The GNU as documentation claims that subsections have an alignment of 4,
     // although this appears not to be the case.