diff --git a/core/lib/Drupal/Core/Routing/RouteCompiler.php b/core/lib/Drupal/Core/Routing/RouteCompiler.php
index 639feff..3213bff 100644
--- a/core/lib/Drupal/Core/Routing/RouteCompiler.php
+++ b/core/lib/Drupal/Core/Routing/RouteCompiler.php
@@ -53,7 +53,7 @@ public static function compile(Route $route) {
       $num_parts,
       // These are the Symfony compiled parts.
       $symfony_compiled->getStaticPrefix(),
-      $symfony_compiled->getRegex(),
+      $symfony_compiled->getRegex() . 'i',
       $symfony_compiled->getTokens(),
       $symfony_compiled->getPathVariables(),
       $symfony_compiled->getHostRegex(),
diff --git a/core/lib/Drupal/Core/Routing/RouteProvider.php b/core/lib/Drupal/Core/Routing/RouteProvider.php
index 937cff7..fe87f7d 100644
--- a/core/lib/Drupal/Core/Routing/RouteProvider.php
+++ b/core/lib/Drupal/Core/Routing/RouteProvider.php
@@ -333,14 +334,18 @@ protected function getRoutesByPath($path) {
     if (empty($ancestors)) {
       return $collection;
     }
-
     // The >= check on number_parts allows us to match routes with optional
     // trailing wildcard parts as long as the pattern matches, since we
     // dump the route pattern without those optional parts.
-    $routes = $this->connection->query("SELECT name, route, fit FROM {" . $this->connection->escapeTable($this->tableName) . "} WHERE pattern_outline IN ( :patterns[] ) AND number_parts >= :count_parts", array(
-      ':patterns[]' => $ancestors, ':count_parts' => count($parts),
-    ))
-      ->fetchAll(\PDO::FETCH_ASSOC);
+    $query = db_select($this->tableName)
+      ->fields($this->tableName, ['name', 'route', 'fit']);
+    $or = db_or();
+    foreach ($ancestors as $ancestor) {
+      $or->condition('pattern_outline', $ancestor, 'LIKE');
+    }
+    $query->condition($or)
+      ->condition('number_parts', count($parts));
+    $routes = $query->execute()->fetchAll(\PDO::FETCH_ASSOC);
 
     // We sort by fit and name in PHP to avoid a SQL filesort.
     usort($routes, array($this, 'routeProviderRouteCompare'));
diff --git a/core/lib/Drupal/Core/Routing/UrlMatcher.php b/core/lib/Drupal/Core/Routing/UrlMatcher.php
index 49bff8f..1251787 100644
--- a/core/lib/Drupal/Core/Routing/UrlMatcher.php
+++ b/core/lib/Drupal/Core/Routing/UrlMatcher.php
@@ -46,4 +46,46 @@ public function finalMatch(RouteCollection $collection, Request $request) {
     return $this->match($this->currentPath->getPath($request));
   }
 
+  protected function matchCollection($pathinfo, RouteCollection $routes)
+  {
+    foreach ($routes as $name => $route) {
+      $compiledRoute = $route->compile();
+
+      if (!preg_match($compiledRoute->getRegex(), $pathinfo, $matches)) {
+        continue;
+      }
+
+      $hostMatches = array();
+      if ($compiledRoute->getHostRegex() && !preg_match($compiledRoute->getHostRegex(), $this->context->getHost(), $hostMatches)) {
+        continue;
+      }
+
+      // check HTTP method requirement
+      if ($requiredMethods = $route->getMethods()) {
+        // HEAD and GET are equivalent as per RFC
+        if ('HEAD' === $method = $this->context->getMethod()) {
+          $method = 'GET';
+        }
+
+        if (!in_array($method, $requiredMethods)) {
+          $this->allow = array_merge($this->allow, $requiredMethods);
+
+          continue;
+        }
+      }
+
+      $status = $this->handleRouteRequirements($pathinfo, $name, $route);
+
+      if (self::ROUTE_MATCH === $status[0]) {
+        return $status[1];
+      }
+
+      if (self::REQUIREMENT_MISMATCH === $status[0]) {
+        continue;
+      }
+
+      return $this->getAttributes($route, $name, array_replace($matches, $hostMatches));
+    }
+  }
+
 }