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| author | Nathan Chancellor <nathan@kernel.org> | 2021-06-17 12:31:40 -0700 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2021-06-28 11:18:28 +0200 |
| commit | e2bc3e91d91ede6710801fa0737e4e4ed729b19e (patch) | |
| tree | ef6027b31cc1f2cf6534ebaadba5f488a80810f8 /scripts/min-tool-version.sh | |
| parent | 5a4e0f58e2d959e2de0f0f1ddaa169e60711d2f0 (diff) | |
| download | lwn-e2bc3e91d91ede6710801fa0737e4e4ed729b19e.tar.gz lwn-e2bc3e91d91ede6710801fa0737e4e4ed729b19e.zip | |
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.
[hca@linux.ibm.com: breaking compatibility with older clang compilers
is intended to finally make use of a feature which allows the
compiler to allocate even/odd register pairs. This is possible since
a very long time with gcc, but only since llvm-project commit
d058262b1471 ("[SystemZ] Support i128 inline asm operands.") with
clang. Using that feature allows to get rid of error prone register
asm statements, of which the above named kernel commit is only the
first of a larger not yet complete series.]
Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Acked-by: Nick Desaulniers <ndesaulniers@google.com>
Acked-by: Masahiro Yamada <masahiroy@kernel.org>
Link: https://lore.kernel.org/r/20210617193139.856957-1-nathan@kernel.org
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'scripts/min-tool-version.sh')
| -rwxr-xr-x | scripts/min-tool-version.sh | 7 |
1 files changed, 6 insertions, 1 deletions
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 |