operand: Implement operand hashing and use hashed set for declarations

Instead of manually searching each element in the declarations vector,
use an unordered_set to emplace new declarations avoiding repetition.

1 files changed, 2 insertions, 1 deletions

diff --git a/include/sirit/sirit.h b/include/sirit/sirit.h
index eee5cff..35b8fd8 100644
--- a/include/sirit/sirit.h
+++ b/include/sirit/sirit.h
@@ -933,7 +933,8 @@ private:
     std::vector<std::unique_ptr<Op>> execution_modes;
     std::vector<std::unique_ptr<Op>> debug;
     std::vector<std::unique_ptr<Op>> annotations;
-    std::vector<std::unique_ptr<Op>> declarations;
+    std::unordered_set<std::unique_ptr<Op>> declarations;
+    std::vector<Id> sorted_declarations;
 
     std::vector<Id> global_variables;