From 4014d651825c3e03e0ad2eabeddcfb94f5f00e68 Mon Sep 17 00:00:00 2001
From: Diachkov Ilia <diachkov.ilia1@huawei-partners.com>
Date: Fri, 29 Dec 2023 05:59:00 +0800
Subject: [PATCH 2/2] Fix fail in IPA prefetch (src-openEuler/gcc: I8RV7T)

---
 gcc/ipa-prefetch.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/gcc/ipa-prefetch.c b/gcc/ipa-prefetch.c
index 24cb4424a..d9456519c 100644
--- a/gcc/ipa-prefetch.c
+++ b/gcc/ipa-prefetch.c
@@ -943,6 +943,9 @@ compare_memrefs (memref_t* mr, memref_t* mr2)
       (*mr_candidate_map)[mr] = mr2;
       return;
     }
+  /* Probably we shouldn't leave nulls in the map.  */
+  if ((*mr_candidate_map)[mr] == NULL)
+    return;
   /* TODO: support analysis with incrementation of different fields.  */
   if ((*mr_candidate_map)[mr]->offset != mr2->offset)
     {
-- 
2.33.0