From 49fba6acf2c38de0bcaf0d0cf857ac0a551b6008 Mon Sep 17 00:00:00 2001
From: Nikita Popov <npopov@redhat.com>
Date: Mon, 10 Jan 2022 15:41:41 -0500
Subject: [PATCH] Disable LTO build on s390x

Fails with pcre limit error otherwise
---
 llvm.spec | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/llvm.spec b/llvm.spec
index 30330b8..f73cfc8 100644
--- a/llvm.spec
+++ b/llvm.spec
@@ -207,7 +207,13 @@ LLVM's modified googletest sources.
 	utils/update_cc_test_checks.py
 
 %build
+
+%ifarch s390 s390x
+# Fails with "exceeded PCRE's backtracking limit"
+%global _lto_cflags %nil
+%else
 %global _lto_cflags -flto=thin
+%endif
 
 %ifarch s390 s390x %{arm} %ix86
 # Decrease debuginfo verbosity to reduce memory consumption during final library linking