[llvm] [OpenMP] Mark problematic tests as XFAIL / UNSUPPORTED (PR #161267)

Sat Jan 3 02:34:29 PST 2026

mgorny wrote:

This (I think) introduced test failures for me:

```
FAIL: libomptarget :: aarch64-unknown-linux-gnu :: offloading/bug51781.c (495 of 864)
******************** TEST 'libomptarget :: aarch64-unknown-linux-gnu :: offloading/bug51781.c' FAILED ********************
Exit Code: 1

Command Output (stdout):
--
# RUN: at line 4
/usr/lib/ccache/bin/aarch64-unknown-linux-gnu-clang -fopenmp    -I /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/offload/test -I /usr/include -L /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/offload -L /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/./lib -L /usr/lib/llvm/22/lib64 -L /usr/lib64  -nogpulib -Wl,-rpath,/var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/offload -Wl,-rpath,/usr/lib64 -Wl,-rpath,/var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/./lib -Wl,-rpath,/usr/lib/llvm/22/lib64  -fopenmp-targets=aarch64-unknown-linux-gnu /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/offload/test/offloading/bug51781.c -o /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/offload/test/aarch64-unknown-linux-gnu/offloading/Output/bug51781.c.tmp && /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/offload/test/aarch64-unknown-linux-gnu/offloading/Output/bug51781.c.tmp | /usr/lib/llvm/22/bin/FileCheck /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/offload/test/offloading/bug51781.c
# executed command: /usr/lib/ccache/bin/aarch64-unknown-linux-gnu-clang -fopenmp -I /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/offload/test -I /usr/include -L /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/offload -L /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/./lib -L /usr/lib/llvm/22/lib64 -L /usr/lib64 -nogpulib -Wl,-rpath,/var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/offload -Wl,-rpath,/usr/lib64 -Wl,-rpath,/var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/./lib -Wl,-rpath,/usr/lib/llvm/22/lib64 -fopenmp-targets=aarch64-unknown-linux-gnu /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/offload/test/offloading/bug51781.c -o /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/offload/test/aarch64-unknown-linux-gnu/offloading/Output/bug51781.c.tmp
# executed command: /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/offload/test/aarch64-unknown-linux-gnu/offloading/Output/bug51781.c.tmp
# executed command: /usr/lib/llvm/22/bin/FileCheck /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/offload/test/offloading/bug51781.c
# RUN: at line 8
/usr/lib/ccache/bin/aarch64-unknown-linux-gnu-clang -fopenmp    -I /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/offload/test -I /usr/include -L /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/offload -L /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/./lib -L /usr/lib/llvm/22/lib64 -L /usr/lib64  -nogpulib -Wl,-rpath,/var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/offload -Wl,-rpath,/usr/lib64 -Wl,-rpath,/var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/./lib -Wl,-rpath,/usr/lib/llvm/22/lib64  -fopenmp-targets=aarch64-unknown-linux-gnu /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/offload/test/offloading/bug51781.c -o /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/offload/test/aarch64-unknown-linux-gnu/offloading/Output/bug51781.c.tmp -O2 -foffload-lto -Rpass=openmp-opt > /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/offload/test/aarch64-unknown-linux-gnu/offloading/Output/bug51781.c.tmp.spmd 2>&1
# executed command: /usr/lib/ccache/bin/aarch64-unknown-linux-gnu-clang -fopenmp -I /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/offload/test -I /usr/include -L /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/offload -L /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/./lib -L /usr/lib/llvm/22/lib64 -L /usr/lib64 -nogpulib -Wl,-rpath,/var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/offload -Wl,-rpath,/usr/lib64 -Wl,-rpath,/var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/./lib -Wl,-rpath,/usr/lib/llvm/22/lib64 -fopenmp-targets=aarch64-unknown-linux-gnu /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/offload/test/offloading/bug51781.c -o /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/offload/test/aarch64-unknown-linux-gnu/offloading/Output/bug51781.c.tmp -O2 -foffload-lto -Rpass=openmp-opt
# RUN: at line 9
echo ignored-command -check-prefix=SPMD -input-file=/var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/offload/test/aarch64-unknown-linux-gnu/offloading/Output/bug51781.c.tmp.spmd
# executed command: echo ignored-command -check-prefix=SPMD -input-file=/var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/offload/test/aarch64-unknown-linux-gnu/offloading/Output/bug51781.c.tmp.spmd
# .---command stdout------------
# | ignored-command -check-prefix=SPMD -input-file=/var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/offload/test/aarch64-unknown-linux-gnu/offloading/Output/bug51781.c.tmp.spmd
# `-----------------------------
# RUN: at line 10
echo ignored-command -check-prefix=SPMD -input-file=/var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/offload/test/aarch64-unknown-linux-gnu/offloading/Output/bug51781.c.tmp.spmd
# executed command: echo ignored-command -check-prefix=SPMD -input-file=/var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/offload/test/aarch64-unknown-linux-gnu/offloading/Output/bug51781.c.tmp.spmd
# .---command stdout------------
# | ignored-command -check-prefix=SPMD -input-file=/var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/offload/test/aarch64-unknown-linux-gnu/offloading/Output/bug51781.c.tmp.spmd
# `-----------------------------
# RUN: at line 11
/var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/offload/test/aarch64-unknown-linux-gnu/offloading/Output/bug51781.c.tmp 2>&1 | /usr/lib/llvm/22/bin/FileCheck /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/offload/test/offloading/bug51781.c
# executed command: /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/offload/test/aarch64-unknown-linux-gnu/offloading/Output/bug51781.c.tmp
# executed command: /usr/lib/llvm/22/bin/FileCheck /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/offload/test/offloading/bug51781.c
# RUN: at line 18
/usr/lib/ccache/bin/aarch64-unknown-linux-gnu-clang -fopenmp    -I /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/offload/test -I /usr/include -L /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/offload -L /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/./lib -L /usr/lib/llvm/22/lib64 -L /usr/lib64  -nogpulib -Wl,-rpath,/var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/offload -Wl,-rpath,/usr/lib64 -Wl,-rpath,/var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/./lib -Wl,-rpath,/usr/lib/llvm/22/lib64  -fopenmp-targets=aarch64-unknown-linux-gnu /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/offload/test/offloading/bug51781.c -o /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/offload/test/aarch64-unknown-linux-gnu/offloading/Output/bug51781.c.tmp -O2 -foffload-lto -Rpass=openmp-opt    -Xoffload-linker -mllvm=-openmp-opt-disable-spmdization    -mllvm -openmp-opt-disable-spmdization > /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/offload/test/aarch64-unknown-linux-gnu/offloading/Output/bug51781.c.tmp.custom 2>&1
# executed command: /usr/lib/ccache/bin/aarch64-unknown-linux-gnu-clang -fopenmp -I /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/offload/test -I /usr/include -L /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/offload -L /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/./lib -L /usr/lib/llvm/22/lib64 -L /usr/lib64 -nogpulib -Wl,-rpath,/var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/offload -Wl,-rpath,/usr/lib64 -Wl,-rpath,/var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/./lib -Wl,-rpath,/usr/lib/llvm/22/lib64 -fopenmp-targets=aarch64-unknown-linux-gnu /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/offload/test/offloading/bug51781.c -o /var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/offload/test/aarch64-unknown-linux-gnu/offloading/Output/bug51781.c.tmp -O2 -foffload-lto -Rpass=openmp-opt -Xoffload-linker -mllvm=-openmp-opt-disable-spmdization -mllvm -openmp-opt-disable-spmdization
# .---redirected output from '/var/tmp/portage/llvm-runtimes/offload-22.0.0.9999/work/runtimes_build/offload/test/aarch64-unknown-linux-gnu/offloading/Output/bug51781.c.tmp.custom'
# | /usr/bin/aarch64-unknown-linux-gnu-ld: unrecognised emulation mode: llvm=-openmp-opt-disable-spmdization
# | Supported emulations: aarch64linux aarch64elf aarch64elf32 aarch64elf32b aarch64elfb armelf armelfb aarch64linuxb aarch64linux32 aarch64linux32b armelfb_linux_eabi armelf_linux_eabi
# | clang: error: linker command failed with exit code 1 (use -v to see invocation)
# | /usr/lib/llvm/22/bin/clang-linker-wrapper: error: 'clang' failed
# | aarch64-unknown-linux-gnu-clang: error: linker command failed with exit code 1 (use -v to see invocation)
# `-----------------------------
# note: command had no output on stdout or stderr
# error: command failed with exit status: 1

--

********************
```

(and `-LTO` just the same way)

Does it assume clang will be using lld or something? Also, not sure if the change in linker args meant to be part of this PR, given the summary.

https://github.com/llvm/llvm-project/pull/161267