From 1d9fedd416532ed619e1fcfac482b29d1726148f Mon Sep 17 00:00:00 2001
From: Timm Bäder <tbaeder@redhat.com>
Date: Dec 05 2022 16:07:40 +0000
Subject: Enable LTO builds on s390x again


The PCRE limit problem has been fixed in redhat-rpm-config in
https://src.fedoraproject.org/rpms/redhat-rpm-config/c/25ea080503858e773f09bb2a0a5d96807e469779?branch=rawhide

---

diff --git a/llvm.spec b/llvm.spec
index 3fba02b..9df5dde 100644
--- a/llvm.spec
+++ b/llvm.spec
@@ -19,6 +19,7 @@
 %global patch_ver 6
 %global llvm_srcdir llvm-%{maj_ver}.%{min_ver}.%{patch_ver}%{?rc_ver:rc%{rc_ver}}.src
 %global cmake_srcdir cmake-%{maj_ver}.%{min_ver}.%{patch_ver}%{?rc_ver:rc%{rc_ver}}.src
+%global _lto_cflags -flto=thin
 
 %if %{with compat_build}
 %global pkg_name llvm%{maj_ver}
@@ -219,13 +220,6 @@ mv %{cmake_srcdir} cmake
 
 %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
 %global optflags %(echo %{optflags} | sed 's/-g /-g1 /')