From d0d592a35b7aa80b5778570366a627cf8a40ead8 Mon Sep 17 00:00:00 2001
From: Oliver Hamlet <oliver.hamlet@gmail.com>
Date: Thu, 26 Nov 2015 18:51:39 +0000
Subject: [PATCH] Speed up plugin condition evaluation

Avoid unnecessary CRC calculation while evaluating conditions.
---
 src/backend/metadata/plugin_metadata.cpp | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/src/backend/metadata/plugin_metadata.cpp b/src/backend/metadata/plugin_metadata.cpp
index 718d56d5..36d5702e 100644
--- a/src/backend/metadata/plugin_metadata.cpp
+++ b/src/backend/metadata/plugin_metadata.cpp
@@ -296,8 +296,12 @@ namespace loot {
                 ++it;
         }
 
-        //First need to get plugin's CRC, if it is an exact plugin and it does not have its CRC set.
-        if (!IsRegexPlugin()) {
+        // Regex plugins shouldn't have dirty info, but just clear in case.
+        if (IsRegexPlugin())
+            _dirtyInfo.clear();
+
+        if (!_dirtyInfo.empty()) {
+            //First need to get plugin's CRC, if it is an exact plugin and it does not have its CRC set.
             uint32_t crc = game.GetCachedCrc(name);
             if (crc == 0) {
                 if (boost::filesystem::exists(game.DataPath() / name)) {
@@ -324,10 +328,6 @@ namespace loot {
                     ++it;
             }
         }
-        else {
-            // Regex plugins shouldn't have dirty info, but just clear in case.
-            _dirtyInfo.clear();
-        }
 
         return *this;
     }