From 087151ddc316fe8e6b05dc90e3ee1712102e6d17 Mon Sep 17 00:00:00 2001
From: Victor Julien <vjulien@oisf.net>
Date: Mon, 4 Apr 2022 13:30:19 +0200
Subject: [PATCH] detect/mpm: initialization micro optimization

---
 src/detect-engine-mpm.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/detect-engine-mpm.c b/src/detect-engine-mpm.c
index c467dc26b8..afff06d960 100644
--- a/src/detect-engine-mpm.c
+++ b/src/detect-engine-mpm.c
@@ -1093,10 +1093,14 @@ void RetrieveFPForSig(const DetectEngineCtx *de_ctx, Signature *s)
 
     /* inspect rule to see if we have the fast_pattern reg to
      * force using a sig, otherwise keep stats about the patterns */
-    for (int list_id = 0; list_id < nlists; list_id++) {
+    for (int list_id = DETECT_SM_LIST_PMATCH; list_id < nlists; list_id++) {
         if (s->init_data->smlists[list_id] == NULL)
             continue;
 
+        if (list_id == DETECT_SM_LIST_POSTMATCH || list_id == DETECT_SM_LIST_TMATCH ||
+                list_id == DETECT_SM_LIST_SUPPRESS || list_id == DETECT_SM_LIST_THRESHOLD)
+            continue;
+
         if (!FastPatternSupportEnabledForSigMatchList(de_ctx, list_id))
             continue;