SILOptimizer: Fix bad hash calculation in CSE

Fixes rdar://problem/108045677.

Author: slavapestov

lib/SILOptimizer/Transforms/CSE.cpp

@@ -523,7 +523,8 @@ class HashVisitor : public SILInstructionVisitor<HashVisitor, llvm::hash_code> {
 
   hash_code visitDynamicPackIndexInst(DynamicPackIndexInst *X) {
     return llvm::hash_combine(
-        X->getKind(), X->getIndexedPackType(), &X->getOperandRef());
+        X->getKind(), X->getIndexedPackType(),
+        tryLookThroughOwnershipInsts(&X->getOperandRef()));
   }
 
   hash_code visitTuplePackElementAddrInst(TuplePackElementAddrInst *X) {
@@ -585,7 +586,7 @@ bool llvm::DenseMapInfo<SimpleValue>::isEqual(SimpleValue LHS,
   };
   bool isEqual =
       LHSI->getKind() == RHSI->getKind() && LHSI->isIdenticalTo(RHSI, opCmp);
-#ifdef NDEBUG
+#ifndef NDEBUG
   if (isEqual && getHashValue(LHS) != getHashValue(RHS)) {
     llvm::dbgs() << "LHS: ";
     LHSI->dump();

test/IRGen/run_variadic_generics.sil

@@ -8,8 +8,6 @@
 
 // REQUIRES: executable_test
 
-// REQUIRES: rdar108045677
-
 import Builtin
 import Swift
 import PrintShims