LoadWeak, FusedRetainAutorelease, and FusedRetainAutoreleaseRV can autorelease

So prevent optimization when we see those to be safe.

Author: AZero13

llvm/lib/Transforms/ObjCARC/ObjCARCOpts.cpp

@@ -2580,7 +2580,10 @@ void ObjCARCOpt::OptimizeAutoreleasePools(Function &F) {
       case ARCInstKind::CallOrUser:
       case ARCInstKind::Call:
       case ARCInstKind::Autorelease:
-      case ARCInstKind::AutoreleaseRV: {
+      case ARCInstKind::AutoreleaseRV:
+      case ARCInstKind::FusedRetainAutorelease:
+      case ARCInstKind::FusedRetainAutoreleaseRV:
+      case ARCInstKind::LoadWeak: {
         // Track that we have autorelease calls in the current pool scope
         if (!PoolStack.empty()) {
           PoolStack.back().second = true; // Set has_autorelease_in_scope = true
@@ -2599,12 +2602,9 @@ void ObjCARCOpt::OptimizeAutoreleasePools(Function &F) {
       case ARCInstKind::RetainBlock:
       case ARCInstKind::Release:
       case ARCInstKind::NoopCast:
-      case ARCInstKind::FusedRetainAutorelease:
-      case ARCInstKind::FusedRetainAutoreleaseRV:
       case ARCInstKind::LoadWeakRetained:
       case ARCInstKind::StoreWeak:
       case ARCInstKind::InitWeak:
-      case ARCInstKind::LoadWeak:
       case ARCInstKind::MoveWeak:
       case ARCInstKind::CopyWeak:
       case ARCInstKind::DestroyWeak: