From 0108f8a1b45fb5fd8cce09e25a7fb50bc22c0eea Mon Sep 17 00:00:00 2001
From: Dmitriy Novozhilov <dmitriy.novozhilov@jetbrains.com>
Date: Tue, 9 Mar 2021 18:10:02 +0300
Subject: [PATCH] [FIR2IR] Don't create implicit not null cast on
 IrGetEnumValue

---
 .../kotlin/fir/backend/Fir2IrImplicitCastInserter.kt         | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrImplicitCastInserter.kt b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrImplicitCastInserter.kt
index f72e42869ea..faaffaf03bf 100644
--- a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrImplicitCastInserter.kt
+++ b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrImplicitCastInserter.kt
@@ -230,11 +230,10 @@ class Fir2IrImplicitCastInserter(
         canBeNull || hasEnhancedNullability()
 
     private fun IrExpression.insertImplicitNotNullCastIfNeeded(expression: FirExpression): IrExpression {
+        if (this is IrGetEnumValue) return this
         // [TypeOperatorLowering] will retrieve the source (from start offset to end offset) as an assertion message.
         // Avoid type casting if we can't determine the source for some reasons, e.g., implicit `this` receiver.
-        if (expression.source == null) {
-            return this
-        }
+        if (expression.source == null) return this
         // Cast type massage 1. Remove @EnhancedNullability
         // Cast type massage 2. Convert it to a non-null variant (in case of @FlexibleNullability)
         val castType = type.removeAnnotations {