diff --git a/src/mapleall/maple_me/src/me_rename2preg.cpp b/src/mapleall/maple_me/src/me_rename2preg.cpp
index 2d75c13a3cbd89f3884b5d423e9c31811bd50389..79ceb99144b320653a4ef5768f50a0001102b134 100644
--- a/src/mapleall/maple_me/src/me_rename2preg.cpp
+++ b/src/mapleall/maple_me/src/me_rename2preg.cpp
@@ -34,6 +34,13 @@ RegMeExpr *SSARename2Preg::RenameVar(const VarMeExpr *varmeexpr) {
   if (mirst->GetAttr(ATTR_localrefvar) || mirst->GetAttr(ATTR_oneelem_simd)) {
     return nullptr;
   }
+  if (ost->GetFieldID() != 0 && mirModule->IsCModule()) {
+    MIRStructType *structType = static_cast<MIRStructType*>(GlobalTables::GetTypeTable().GetTypeFromTyIdx(mirst->GetTyIdx()));
+    FieldAttrs fattrs = structType->GetFieldAttrs(ost->GetFieldID());
+    if (fattrs.GetAttr(FLDATTR_oneelem_simd)) {
+      return nullptr;
+    }
+  }
   if (ost->IsFormal() && varmeexpr->GetPrimType() == PTY_ref) {
     return nullptr;
   }
diff --git a/src/mapleall/maple_me/src/me_ssa_lpre.cpp b/src/mapleall/maple_me/src/me_ssa_lpre.cpp
index 9e18a6a496dde4a3a3c310505368180789537d17..a8e9ca542077c5d6674dc714f43d3936da3eb2b0 100644
--- a/src/mapleall/maple_me/src/me_ssa_lpre.cpp
+++ b/src/mapleall/maple_me/src/me_ssa_lpre.cpp
@@ -241,9 +241,17 @@ void MeSSALPre::BuildWorkListLHSOcc(MeStmt &meStmt, int32 seqStmt) {
       (void)assignedFormals.insert(ost->GetIndex());
     }
     CHECK_NULL_FATAL(meStmt.GetRHS());
-    if (ost->IsVolatile()) {
+    if (ost->IsVolatile() || ost->GetMIRSymbol()->GetAttr(ATTR_oneelem_simd)) {
       return;
     }
+    if (ost->GetFieldID() != 0 && mirModule->IsCModule()) {
+      MIRStructType *structType = static_cast<MIRStructType*>(GlobalTables::GetTypeTable().GetTypeFromTyIdx(ost->GetMIRSymbol()->GetTyIdx()));
+      FieldAttrs fattrs = structType->GetFieldAttrs(ost->GetFieldID());
+      if (fattrs.GetAttr(FLDATTR_oneelem_simd)) {
+        return;
+      }
+    }
+
     if (lhs->GetPrimType() == PTY_agg) {
       return;
     }
@@ -313,6 +321,16 @@ void MeSSALPre::BuildWorkListExpr(MeStmt &meStmt, int32 seqStmt, MeExpr &meExpr,
         break;
       }
       const MIRSymbol *sym = ost->GetMIRSymbol();
+      if (sym->GetAttr(ATTR_oneelem_simd)) {
+        break;
+      }
+      if (ost->GetFieldID() != 0 && mirModule->IsCModule()) {
+        MIRStructType *structType = static_cast<MIRStructType*>(GlobalTables::GetTypeTable().GetTypeFromTyIdx(sym->GetTyIdx()));
+        FieldAttrs fattrs = structType->GetFieldAttrs(ost->GetFieldID());
+        if (fattrs.GetAttr(FLDATTR_oneelem_simd)) {
+          break;
+        }
+      }
       if (sym->IsInstrumented() && !(func->GetHints() & kPlacementRCed)) {
         // not doing because its SSA form is not complete
         break;
diff --git a/src/mapleall/maple_me/src/prop.cpp b/src/mapleall/maple_me/src/prop.cpp
index e2b154c4688e9483da71c754d5d5b44dcf2ffe8b..0a6f43ea58395a6060ae7ef589a5a0ed2b809ec6 100644
--- a/src/mapleall/maple_me/src/prop.cpp
+++ b/src/mapleall/maple_me/src/prop.cpp
@@ -615,9 +615,16 @@ MeExpr *Prop::CheckTruncation(MeExpr *lhs, MeExpr *rhs) const {
 // return varMeExpr itself if no propagation opportunity
 MeExpr &Prop::PropVar(VarMeExpr &varMeExpr, bool atParm, bool checkPhi) {
   const MIRSymbol *st = varMeExpr.GetOst()->GetMIRSymbol();
-  if (st->IsInstrumented() || varMeExpr.IsVolatile()) {
+  if (st->IsInstrumented() || varMeExpr.IsVolatile() || st->GetAttr(ATTR_oneelem_simd)) {
     return varMeExpr;
   }
+  if (varMeExpr.GetOst()->GetFieldID() != 0 && mirModule.IsCModule()) {
+    MIRStructType *structType = static_cast<MIRStructType*>(GlobalTables::GetTypeTable().GetTypeFromTyIdx(st->GetTyIdx()));
+    FieldAttrs fattrs = structType->GetFieldAttrs(varMeExpr.GetOst()->GetFieldID());
+    if (fattrs.GetAttr(FLDATTR_oneelem_simd)) {
+      return varMeExpr;
+    }
+  }
 
   if (varMeExpr.GetDefBy() == kDefByStmt) {
     DassignMeStmt *defStmt = static_cast<DassignMeStmt*>(varMeExpr.GetDefStmt());