linux-kernel - [PATCH] scripts/min-tool-version.sh: Raise minimum clang version to 13.0.0 for s390

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Date:   Thu, 17 Jun 2021 12:31:40 -0700
From:   Nathan Chancellor <nathan@...nel.org>
To:     Heiko Carstens <hca@...ux.ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        Masahiro Yamada <masahiroy@...nel.org>
Cc:     Nick Desaulniers <ndesaulniers@...gle.com>,
        linux-kernel@...r.kernel.org, clang-built-linux@...glegroups.com,
        linux-s390@...r.kernel.org, linux-next@...r.kernel.org,
        lkft-triage@...ts.linaro.org, Arnd Bergmann <arnd@...db.de>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Nathan Chancellor <nathan@...nel.org>,
        Naresh Kamboju <naresh.kamboju@...aro.org>
Subject: [PATCH] scripts/min-tool-version.sh: Raise minimum clang version to 13.0.0 for s390

clang versions prior to the current development version of 13.0.0 cannot
compile s390 after commit 3abbdfde5a65 ("s390/bitops: use register pair
instead of register asm") and the s390 maintainers do not intend to work
around this in the kernel. Codify this in scripts/min-tool-version.sh
similar to arm64 with GCC 5.1.0 so that there are no reports of broken
builds.

Reported-by: Naresh Kamboju <naresh.kamboju@...aro.org>
Signed-off-by: Nathan Chancellor <nathan@...nel.org>
---

This should probably go through the s390 tree with Masahiro's ack.

 scripts/min-tool-version.sh | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/scripts/min-tool-version.sh b/scripts/min-tool-version.sh
index d22cf91212b0..319f92104f56 100755
--- a/scripts/min-tool-version.sh
+++ b/scripts/min-tool-version.sh
@@ -30,7 +30,12 @@ icc)
 	echo 16.0.3
 	;;
 llvm)
-	echo 10.0.1
+	# https://lore.kernel.org/r/YMtib5hKVyNknZt3@osiris/
+	if [ "$SRCARCH" = s390 ]; then
+		echo 13.0.0
+	else
+		echo 10.0.1
+	fi
 	;;
 *)
 	echo "$1: unknown tool" >&2

base-commit: 7d9c6b8147bdd76d7eb2cf6f74f84c6918ae0939
-- 
2.32.0.93.g670b81a890