diff --git a/src/mapleall/maple_me/src/lfo_iv_canon.cpp b/src/mapleall/maple_me/src/lfo_iv_canon.cpp
index 6cdd31727abfe9f0f51c6f9dc30887be95ce65f6..fed13132b7193dff9472c8d1d2e8e051672149f0 100644
--- a/src/mapleall/maple_me/src/lfo_iv_canon.cpp
+++ b/src/mapleall/maple_me/src/lfo_iv_canon.cpp
@@ -40,6 +40,9 @@ bool IVCanon::ResolveExprValue(MeExpr *x, ScalarMeExpr *phiLHS) {
       return true;
     }
     ScalarMeExpr *scalar = static_cast<ScalarMeExpr *>(x);
+    if (!scalar->GetOst()->IsLocal() || scalar->GetOst()->IsAddressTaken()) {
+      return false;
+    }
     if (scalar->GetDefBy() != kDefByStmt) {
       return false;
     }
diff --git a/src/mapleall/maple_me/src/me_ivopts.cpp b/src/mapleall/maple_me/src/me_ivopts.cpp
index 84d3615592768a9d22d33a7d00d47a5d12f9c92e..3dab05df7e6a6128821b4af96aac5a0c705e55de 100644
--- a/src/mapleall/maple_me/src/me_ivopts.cpp
+++ b/src/mapleall/maple_me/src/me_ivopts.cpp
@@ -1432,7 +1432,7 @@ MeExpr *IVOptimizer::ComputeExtraExprOfBase(MeExpr &candBase, MeExpr &groupBase,
   for (auto &itCand : candMap) {
     auto itGroup = groupMap.find(itCand.first);
     if (itCand.first == kInvalidExprID) {
-      candConst = itCand.second.second * ratio;
+      candConst = (uint64)itCand.second.second * ratio;
       groupConst = itGroup == groupMap.end() ? 0 : itGroup->second.second;
       continue;
     }