IR_PreItMOps: Fix missing duplicate when splitting up compound assignments and...

IR_PreItMOps: Fix missing duplicate when splitting up compound assignments and only apply trafo for HODTs

Compiler/src/exastencils/baseExt/ir/IR_ResolveMatrices.scala

@@ -95,14 +95,14 @@ object IR_PreItMOps extends DefaultStrategy("Prelimirary transformations") {
   ////////////////////////////////////////////////////////////////// combined ops
 
   this += new Transformation("Split combined operators", {
-    case IR_Assignment(dest, src, "+=") =>
-      IR_Assignment(dest, IR_Addition(dest, src))
-    case IR_Assignment(dest, src, "*=") =>
-      IR_Assignment(dest, IR_Multiplication(ListBuffer[IR_Expression](dest, src)))
-    case IR_Assignment(dest, src, "-=") =>
-      IR_Assignment(dest, IR_Subtraction(dest, src))
-    case IR_Assignment(dest, src, "/=") =>
-      IR_Assignment(dest, IR_Division(dest, src))
+    case IR_Assignment(dest, src, "+=") if dest.datatype.isInstanceOf[IR_HigherDimensionalDatatype] =>
+      IR_Assignment(Duplicate(dest), IR_Addition(dest, src))
+    case IR_Assignment(dest, src, "*=") if dest.datatype.isInstanceOf[IR_HigherDimensionalDatatype] =>
+      IR_Assignment(Duplicate(dest), IR_Multiplication(ListBuffer[IR_Expression](dest, src)))
+    case IR_Assignment(dest, src, "-=") if dest.datatype.isInstanceOf[IR_HigherDimensionalDatatype] =>
+      IR_Assignment(Duplicate(dest), IR_Subtraction(dest, src))
+    case IR_Assignment(dest, src, "/=") if dest.datatype.isInstanceOf[IR_HigherDimensionalDatatype] =>
+      IR_Assignment(Duplicate(dest), IR_Division(dest, src))
   }, false)
   /////////////////////////////////////////////