Config reportInfo to speed up analysis for big projects (#4095)

config.xsd

@@ -77,6 +77,7 @@
         <xs:attribute name="usePhpStormMetaPath" type="xs:boolean" default="true" />
         <xs:attribute name="allowInternalNamedArgumentCalls" type="xs:boolean" default="true" />
         <xs:attribute name="allowNamedArgumentCalls" type="xs:boolean" default="true" />
+        <xs:attribute name="reportInfo" type="xs:boolean" default="true" />
     </xs:complexType>
 
     <xs:complexType name="ProjectFilesType">

docs/running_psalm/configuration.md

@@ -314,6 +314,16 @@ When `true`, Psalm will treat all classes as if they had sealed methods, meaning
 
 When `true`, Psalm will run [Taint Analysis](../security_analysis/index.md) on your codebase. This config is the same as if you were running Psalm with `--taint-analysis`.
 
+#### reportInfo
+
+```xml
+<psalm
+  reportInfo="[bool]"
+>
+```
+
+When `false`, Psalm will not consider issue at lower level than `errorLevel` as `info` (they will be suppressed instead). This can be a big improvement in analysis time for big projects. However, this config will prevent Psalm to count or suggest fixes for suppressed issue
+
 ### Running Psalm
 
 #### autoloader

src/Psalm/Config.php

@@ -610,6 +610,11 @@ class Config
      */
     public $debug_emitted_issues = false;
 
+    /**
+     * @var bool
+     */
+    private $report_info = true;
+
     protected function __construct()
     {
         self::$instance = $this;
@@ -844,6 +849,7 @@ private static function fromXmlAndPaths(string $base_dir, string $file_contents,
             'allowInternalNamedArgumentsCalls' => 'allow_internal_named_arg_calls',
             'allowNamedArgumentCalls' => 'allow_named_arg_calls',
             'findUnusedPsalmSuppress' => 'find_unused_psalm_suppress',
+            'reportInfo' => 'report_info',
         ];
 
         foreach ($booleanAttributes as $xmlName => $internalName) {
@@ -1604,7 +1610,7 @@ public function getReportingLevelForFile($issue_type, $file_path)
         $issue_level = $issue_class::ERROR_LEVEL;
 
         if ($issue_level > 0 && $issue_level < $this->level) {
-            return self::REPORT_INFO;
+            return $this->report_info ? self::REPORT_INFO : self::REPORT_SUPPRESS;
         }
 
         return self::REPORT_ERROR;