From 13d91837beca50ea54af31da26f3ce8c925cd2e9 Mon Sep 17 00:00:00 2001
From: Mikhail Glukhikh <mikhail.glukhikh@jetbrains.com>
Date: Thu, 3 Jun 2021 11:46:11 +0300
Subject: [PATCH] FIR: cache functional type symbols in type resolver

---
 .../fir/resolve/providers/impl/FirTypeResolverImpl.kt      | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/providers/impl/FirTypeResolverImpl.kt b/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/providers/impl/FirTypeResolverImpl.kt
index 58fc21583e0..7d14190ab29 100644
--- a/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/providers/impl/FirTypeResolverImpl.kt
+++ b/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/providers/impl/FirTypeResolverImpl.kt
@@ -161,8 +161,13 @@ class FirTypeResolverImpl(private val session: FirSession) : FirTypeResolver() {
             StandardNames.getFunctionClassId(typeRef.parametersCount)
         }
         val attributes = typeRef.annotations.computeTypeAttributes()
+        val symbol = resolveBuiltInQualified(classId, session)
         return ConeClassLikeTypeImpl(
-            resolveBuiltInQualified(classId, session).toLookupTag(),
+            symbol.toLookupTag().also {
+                if (it is ConeClassLikeLookupTagImpl) {
+                    it.bindSymbolToLookupTag(session, symbol)
+                }
+            },
             parameters.toTypedArray(),
             typeRef.isMarkedNullable,
             attributes