Ensure that negative constants are never marked as temporary terms

2020-09-23 17:28:18 +02:00 · 2020-09-23 17:28:18 +02:00 · e4687bb976
parent 571ea3eb8a
commit e4687bb976
1 changed files with 3 additions and 0 deletions
--- a/src/ExprNode.cc
+++ b/src/ExprNode.cc
@ -2191,6 +2191,9 @@ UnaryOpNode::cost(const vector<vector<temporary_terms_t>> &blocks_temporary_term
 int
 UnaryOpNode::cost(int cost, bool is_matlab) const
 {
+  if (op_code == UnaryOpcode::uminus && dynamic_cast<NumConstNode *>(arg))
+    return 0; // Cost is zero for a negative constant, as for a positive one
+
  if (is_matlab)
    // Cost for Matlab files
    switch (op_code)