Expose reserve() to Dictionary, use it on the GDScript VM

Author: DeeJayLSP

core/variant/dictionary.cpp

@@ -299,6 +299,12 @@ void Dictionary::_ref(const Dictionary &p_from) const {
 	_p = p_from._p;
 }
 
+void Dictionary::reserve(int64_t p_new_capacity) {
+	ERR_FAIL_COND_MSG(_p->read_only, "Dictionary is in read-only state.");
+	ERR_FAIL_COND_MSG(p_new_capacity < 0 || p_new_capacity > UINT32_MAX, "New capacity must be non-negative and less than or equal to UINT32_MAX.");
+	_p->variant_map.reserve(p_new_capacity);
+}
+
 void Dictionary::clear() {
 	ERR_FAIL_COND_MSG(_p->read_only, "Dictionary is in read-only state.");
 	_p->variant_map.clear();

core/variant/dictionary.h

@@ -74,6 +74,7 @@ class Dictionary {
 
 	int size() const;
 	bool is_empty() const;
+	void reserve(int64_t p_new_capacity);
 	void clear();
 	void sort();
 	void merge(const Dictionary &p_dictionary, bool p_overwrite = false);

modules/gdscript/gdscript_vm.cpp

@@ -1827,7 +1827,7 @@ Variant GDScriptFunction::call(GDScriptInstance *p_instance, const Variant **p_a
 
 				int argc = _code_ptr[ip + 1];
 				Dictionary dict;
-
+				dict.reserve(argc);
 				for (int i = 0; i < argc; i++) {
 					GET_INSTRUCTION_ARG(k, i * 2 + 0);
 					GET_INSTRUCTION_ARG(v, i * 2 + 1);
@@ -1864,7 +1864,7 @@ Variant GDScriptFunction::call(GDScriptInstance *p_instance, const Variant **p_a
 				const StringName value_native_type = _global_names_ptr[value_native_type_idx];
 
 				Dictionary dict;
-
+				dict.reserve(argc);
 				for (int i = 0; i < argc; i++) {
 					GET_INSTRUCTION_ARG(k, i * 2 + 0);
 					GET_INSTRUCTION_ARG(v, i * 2 + 1);