From 7e12d491ceff898275074486d6927b0d44a4b8c8 Mon Sep 17 00:00:00 2001
From: Piotr Trojanek <trojanek@adacore.com>
Date: Fri, 28 May 2021 14:54:01 +0200
Subject: [PATCH] [Ada] Avoid unnecessary call in preanalysis without freezing

gcc/ada/

	* sem_res.adb (Preanalyze_And_Resolve): Only call
	Set_Must_Not_Freeze when it is necessary to restore the previous
	value.
---
 gcc/ada/sem_res.adb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/ada/sem_res.adb b/gcc/ada/sem_res.adb
index 26e4a07ae31..e2c069ca740 100644
--- a/gcc/ada/sem_res.adb
+++ b/gcc/ada/sem_res.adb
@@ -1886,9 +1886,9 @@ package body Sem_Res is
 
       Expander_Mode_Restore;
       Full_Analysis := Save_Full_Analysis;
-      Set_Must_Not_Freeze (N, Save_Must_Not_Freeze);
 
       if not With_Freezing then
+         Set_Must_Not_Freeze (N, Save_Must_Not_Freeze);
          Inside_Preanalysis_Without_Freezing :=
            Inside_Preanalysis_Without_Freezing - 1;
       end if;