From e4687bb97616a19432e1b46565b6b6065276b657 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=A9bastien=20Villemot?= <sebastien@dynare.org>
Date: Wed, 23 Sep 2020 17:28:18 +0200
Subject: [PATCH] Ensure that negative constants are never marked as temporary
terms
---
src/ExprNode.cc | 3 +++
1 file changed, 3 insertions(+)
diff --git a/src/ExprNode.cc b/src/ExprNode.cc
index a48de883..7d2814be 100644
--- 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)
--
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