Fixed minor issue

UQ-PAC · Mar 1, 2024 · 05c920c · 05c920c
1 parent f4bc39b
commit 05c920c
Showing 1 changed file with 5 additions and 3 deletions.
diff --git a/src/main/scala/analysis/UtilMethods.scala b/src/main/scala/analysis/UtilMethods.scala
@@ -2,6 +2,8 @@ package analysis
 import ir.*
 import util.Logger
 
+import scala.collection.mutable.ListBuffer
+
 /** Evaluate an expression in a hope of finding a global variable.
   *
   * @param exp
@@ -108,8 +110,8 @@ def evaluateExpressionWithSSA(exp: Expr, constantPropResult: Map[RegisterVariabl
   }
 }
 
-def unwrapExpr(expr: Expr): List[Expr] = {
-  val buffers = List[Expr]()
+def unwrapExpr(expr: Expr): ListBuffer[Expr] = {
+  val buffers = ListBuffer[Expr]()
   expr match {
     case e: Extract => buffers ++= unwrapExpr(e.body)
     case e: SignExtend => buffers ++= unwrapExpr(e.body)
@@ -120,7 +122,7 @@ def unwrapExpr(expr: Expr): List[Expr] = {
       buffers ++= unwrapExpr(binaryExpr.arg1)
       buffers ++= unwrapExpr(binaryExpr.arg2)
     case memoryLoad: MemoryLoad =>
-      buffers += memoryLoad
+      buffers ++= ListBuffer(memoryLoad)
       buffers ++= unwrapExpr(memoryLoad.index)
     case _ =>
   }