Architecture specific change in rpms/llvm.git

The package rpms/llvm.git has added or updated architecture specific content in its
spec file (ExclusiveArch/ExcludeArch or %ifarch/%ifnarch) in commit(s):
https://src.fedoraproject.org/cgit/rpms/llvm.git/commit/?id=acf22be74c3755c2....

Change:
+%ifarch s390 %{arm} %ix86

Thanks.

Full change:
============

commit acf22be74c3755c2148a1a15743b912b16642154
Author: Tom Stellard 
Date:   Mon Sep 30 20:49:55 2019 +0000

Build libLLVM.so first to avoid OOM errors

Linking libLLVM.so takes a lot of memory and often causes OOM errors
    on builders with low memory:cpu ratios..  By building libLLVM.so first,
    we can ensure that when libLLVM.so is being linked, there are no other
    build threads running which reduces the chances of an OOM error.

diff --git a/llvm.spec b/llvm.spec
index 1cee55c..1f544f4 100644
--- a/llvm.spec
+++ b/llvm.spec
@@ -14,7 +14,7 @@
 %global min_ver 0
 %global patch_ver 0
 #%%global rc_ver 3
-%global baserelease 2
+%global baserelease 3

%if %{with compat_build}
@@ -164,7 +164,7 @@ pathfix.py -i %{__python3} -pn \
 mkdir -p _build
 cd _build

-%ifarch s390 s390x %{arm} %ix86
+%ifarch s390 %{arm} %ix86
 # Decrease debuginfo verbosity to reduce memory consumption during final library linking
 %global optflags %(echo %{optflags} | sed 's/-g /-g1 /')
 %endif
@@ -180,7 +180,7 @@ cd _build
    -DLLVM_PARALLEL_LINK_JOBS=1 \
    -DCMAKE_BUILD_TYPE=RelWithDebInfo \
    -DCMAKE_INSTALL_RPATH=";" \
-%ifarch s390 s390x %{arm} %ix86
+%ifarch s390 %{arm} %ix86
    -DCMAKE_C_FLAGS_RELWITHDEBINFO="%{optflags} -DNDEBUG" \
    -DCMAKE_CXX_FLAGS_RELWITHDEBINFO="%{optflags} -DNDEBUG" \
 %endif
@@ -239,6 +239,10 @@ cd _build
    -DLLVM_INSTALL_SPHINX_HTML_DIR=%{_pkgdocdir}/html \
    -DSPHINX_EXECUTABLE=%{_bindir}/sphinx-build-3

+# Build libLLVM.so first.  This ensures that when libLLVM.so is linking, there
+# are no other compile jobs running.  This will help reduce OOM errors on the
+# builders without having to artificially limit the number of concurrent jobs.
+%ninja_build LLVM
 %ninja_build

%install
@@ -476,6 +480,9 @@ fi
 %endif

%changelog
+* Mon Sep 30 2019 Tom Stellard  - 9.0.0-3
+- Build libLLVM.so first to avoid OOM errors
+
 * Fri Sep 27 2019 Tom Stellard  - 9.0.0-2
 - Remove unneeded BuildRequires: libstdc++-static