SILOptimizer: Add some FIXMEs and a cleanup

lib/SILOptimizer/IPO/CapturePromotion.cpp

@@ -365,6 +365,7 @@ computeNewArgInterfaceTypes(SILFunction *F,
     assert(paramBoxTy->getLayout()->getFields().size() == 1
            && "promoting compound box not implemented yet");
     auto paramBoxedTy = paramBoxTy->getFieldType(F->getModule(), 0);
+    // FIXME: Expansion
     auto &paramTL = Types.getTypeLowering(paramBoxedTy,
                                           ResilienceExpansion::Minimal);
     ParameterConvention convention;

lib/SILOptimizer/Transforms/ObjectOutliner.cpp

@@ -339,6 +339,7 @@ bool ObjectOutliner::optimizeObjectAllocation(
                           << ARI->getFunction()->getName() << '\n');
 
   SILModule *Module = &ARI->getFunction()->getModule();
+  // FIXME: Expansion
   assert(!Cl->isResilient(Module->getSwiftModule(),
                           ResilienceExpansion::Minimal) &&
     "constructor call of resilient class should prevent static allocation");
@@ -448,6 +449,7 @@ void ObjectOutliner::replaceFindStringCall(ApplyInst *FindStringCall) {
     return;
 
 
+  // FIXME: Expansion
   assert(!cacheDecl->isResilient(Module->getSwiftModule(),
                                  ResilienceExpansion::Minimal));
 

lib/SILOptimizer/Utils/Devirtualize.cpp

@@ -695,8 +695,7 @@ bool swift::canDevirtualizeClassMethod(FullApplySite AI,
   }
 
   // We need to disable the  “effectively final” opt if a function is inlinable
-  if (isEffectivelyFinalMethod && AI.getFunction()->getResilienceExpansion() ==
-                                      ResilienceExpansion::Minimal) {
+  if (isEffectivelyFinalMethod && AI.getFunction()->isSerialized()) {
     LLVM_DEBUG(llvm::dbgs() << "        FAIL: Could not optimize function "
                                "because it is an effectively-final inlinable: "
                             << AI.getFunction()->getName() << "\n");