Bug#995148: clang-11: fatal error: Cannot select: intrinsic %llvm.arm.hint under armel

[Christian Marillat]

Package: clang-11
Version: 1:11.1.0-1
Severity: normal

Dear Maintainer,

When I try to build libdispatch 5.4.2 the build fail with the error below.

You can download libdispatch 5.4.2 from here (Debian packages are too old) :

https://www.deb-multimedia.org/pool/main/libd/libdispatch-dmo/libdispatch-dmo_5.4.2-0.0.debian.tar.xz
https://www.deb-multimedia.org/pool/main/libd/libdispatch-dmo/libdispatch-dmo_5.4.2-0.0.dsc
https://www.deb-multimedia.org/pool/main/libd/libdispatch-dmo/libdispatch-dmo_5.4.2.orig.tar.xz

File attached :
The dpkg-buildpackage build log:
libdispatch-dmo_5.4.2-0.0_armel.build
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Files generated by clang :
yield-8be637.c
yield-8be637.sh
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,----
| /home/marillat/build/libdispatch-dmo-5.4.2/src/shims/yield.c:29:18: warning: large atomic operation may incur significant performance penalty [-Watomic-alignment]
|         while ((value = os_atomic_load(ptr, relaxed)) == NULL) {
|                         ^
| /home/marillat/build/libdispatch-dmo-5.4.2/src/shims/atomic.h:53:3: note: expanded from macro 'os_atomic_load'
|                 atomic_load_explicit(_os_atomic_c11_atomic(p), memory_order_##m)
|                 ^
| /usr/lib/llvm-11/lib/clang/11.1.0/include/stdatomic.h:121:30: note: expanded from macro 'atomic_load_explicit'
| #define atomic_load_explicit __c11_atomic_load
|                              ^
| fatal error: error in backend: Cannot select: intrinsic %llvm.arm.hint
`----

Christian

-- System Information:
Debian Release: bookworm/sid
  APT prefers buildd-unstable
  APT policy: (500, 'buildd-unstable'), (500, 'unstable')
Architecture: armel (armv7l)
Foreign Architectures: armhf

Kernel: Linux 5.10.52-v7+ (SMP w/4 CPU threads)
Kernel taint flags: TAINT_CRAP
Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages clang-11 depends on:
ii  binutils                2.37-7
ii  libatomic1              11.2.0-8
ii  libc6                   2.32-4
ii  libc6-dev               2.32-4
ii  libclang-common-11-dev  1:11.1.0-1
ii  libclang-cpp11          1:11.1.0-1
ii  libclang1-11            1:11.1.0-1
ii  libgcc-10-dev           10.3.0-11
ii  libgcc-s1               11.2.0-8
ii  libllvm11               1:11.1.0-1
ii  libobjc-10-dev          10.3.0-11
ii  libstdc++-10-dev        10.3.0-11
ii  libstdc++6              11.2.0-8

Versions of packages clang-11 recommends:
pn  libomp-11-dev  <none>
pn  llvm-11-dev    <none>
ii  python3        3.9.2-3

Versions of packages clang-11 suggests:
pn  clang-11-doc  <none>

-- no debconf information