Merge pull request #70481 from gottesmm/more-translation-stuff

[region-isolation] Begin filling out unhandled instructions.

Author: gottesmm

include/swift/SIL/MemAccessUtils.h

@@ -1639,6 +1639,8 @@ inline bool isAccessStorageIdentityCast(SingleValueInstruction *svi) {
   case SILInstructionKind::MarkUnresolvedReferenceBindingInst:
   case SILInstructionKind::MarkDependenceInst:
   case SILInstructionKind::CopyValueInst:
+  case SILInstructionKind::BeginBorrowInst:
+  case SILInstructionKind::MoveOnlyWrapperToCopyableBoxInst:
     return true;
   }
 }

lib/SIL/Utils/MemAccessUtils.cpp

@@ -775,11 +775,11 @@ LLVM_ATTRIBUTE_USED void AccessBase::dump() const { print(llvm::dbgs()); }
 
 bool swift::isIdentityPreservingRefCast(SingleValueInstruction *svi) {
   // Ignore both copies and other identity and ownership preserving casts
-  return isa<CopyValueInst>(svi) || isa<BeginBorrowInst>(svi)
-         || isa<EndInitLetRefInst>(svi)
-         || isa<BeginDeallocRefInst>(svi)
-         || isa<EndCOWMutationInst>(svi)
-         || isIdentityAndOwnershipPreservingRefCast(svi);
+  return isa<CopyValueInst>(svi) || isa<BeginBorrowInst>(svi) ||
+         isa<EndInitLetRefInst>(svi) || isa<BeginDeallocRefInst>(svi) ||
+         isa<EndCOWMutationInst>(svi) ||
+         isa<MarkUnresolvedReferenceBindingInst>(svi) ||
+         isIdentityAndOwnershipPreservingRefCast(svi);
 }
 
 // On some platforms, casting from a metatype to a reference type dynamically