[clang] [clang][Driver] Honor `--offload-jobs` in device-only compilation (PR #233184)

[via cfe-commits]

github-actions[bot] wrote:

<!--PREMERGE ADVISOR COMMENT: Windows-->
# :window: Windows x64 Test Results

* 56957 tests passed
* 1858 tests skipped
* 1 test failed

## Failed Tests
(click on a test name to see its output)

### Clang
<details>
<summary>Clang.Driver/offload-parallel-device-cc1.cu</summary>

```
Exit Code: 1

Command Output (stdout):
--
# RUN: at line 4
rm -rf C:\_work\llvm-project\llvm-project\build\tools\clang\test\Driver\Output\offload-parallel-device-cc1.cu.tmp && mkdir -p C:\_work\llvm-project\llvm-project\build\tools\clang\test\Driver\Output\offload-parallel-device-cc1.cu.tmp
# executed command: rm -rf 'C:\_work\llvm-project\llvm-project\build\tools\clang\test\Driver\Output\offload-parallel-device-cc1.cu.tmp'
# note: command had no output on stdout or stderr
# executed command: mkdir -p 'C:\_work\llvm-project\llvm-project\build\tools\clang\test\Driver\Output\offload-parallel-device-cc1.cu.tmp'
# note: command had no output on stdout or stderr
# RUN: at line 5
not c:\_work\llvm-project\llvm-project\build\bin\clang.exe -x c++ --offload-jobs=1 -Werror -fsyntax-only C:\_work\llvm-project\llvm-project\clang\test\Driver\offload-parallel-device-cc1.cu 2>&1 |    c:\_work\llvm-project\llvm-project\build\bin\filecheck.exe -check-prefix=NOOFFLOAD C:\_work\llvm-project\llvm-project\clang\test\Driver\offload-parallel-device-cc1.cu
# executed command: not 'c:\_work\llvm-project\llvm-project\build\bin\clang.exe' -x c++ --offload-jobs=1 -Werror -fsyntax-only 'C:\_work\llvm-project\llvm-project\clang\test\Driver\offload-parallel-device-cc1.cu'
# note: command had no output on stdout or stderr
# executed command: 'c:\_work\llvm-project\llvm-project\build\bin\filecheck.exe' -check-prefix=NOOFFLOAD 'C:\_work\llvm-project\llvm-project\clang\test\Driver\offload-parallel-device-cc1.cu'
# note: command had no output on stdout or stderr
# RUN: at line 8
c:\_work\llvm-project\llvm-project\build\bin\clang.exe -x hip --target=x86_64-unknown-linux-gnu -nogpuinc -nogpulib    --offload-arch=gfx900 --offload-jobs=1 -Werror -E C:\_work\llvm-project\llvm-project\clang\test\Driver\offload-parallel-device-cc1.cu -o C:\_work\llvm-project\llvm-project\build\tools\clang\test\Driver\Output\offload-parallel-device-cc1.cu.tmp/hip.i
# executed command: 'c:\_work\llvm-project\llvm-project\build\bin\clang.exe' -x hip --target=x86_64-unknown-linux-gnu -nogpuinc -nogpulib --offload-arch=gfx900 --offload-jobs=1 -Werror -E 'C:\_work\llvm-project\llvm-project\clang\test\Driver\offload-parallel-device-cc1.cu' -o 'C:\_work\llvm-project\llvm-project\build\tools\clang\test\Driver\Output\offload-parallel-device-cc1.cu.tmp/hip.i'
# note: command had no output on stdout or stderr
# RUN: at line 10
c:\_work\llvm-project\llvm-project\build\bin\clang.exe -x hip --target=x86_64-unknown-linux-gnu    -nostdinc -nogpuinc -nohipwrapperinc -nogpulib    --offload-arch=gfx900 --offload-arch=gfx906 --offload-jobs=2    -O3 -c C:\_work\llvm-project\llvm-project\clang\test\Driver\offload-parallel-device-cc1.cu -o C:\_work\llvm-project\llvm-project\build\tools\clang\test\Driver\Output\offload-parallel-device-cc1.cu.tmp.o
# executed command: 'c:\_work\llvm-project\llvm-project\build\bin\clang.exe' -x hip --target=x86_64-unknown-linux-gnu -nostdinc -nogpuinc -nohipwrapperinc -nogpulib --offload-arch=gfx900 --offload-arch=gfx906 --offload-jobs=2 -O3 -c 'C:\_work\llvm-project\llvm-project\clang\test\Driver\offload-parallel-device-cc1.cu' -o 'C:\_work\llvm-project\llvm-project\build\tools\clang\test\Driver\Output\offload-parallel-device-cc1.cu.tmp.o'
# .---command stderr------------
# | clang: warning: argument unused during compilation: '-nohipwrapperinc' [-Wunused-command-line-argument]
# | clang: warning: argument unused during compilation: '--no-default-config' [-Wunused-command-line-argument]
# | clang: warning: argument unused during compilation: '--no-default-config' [-Wunused-command-line-argument]
# `-----------------------------
# RUN: at line 15
cd C:\_work\llvm-project\llvm-project\build\tools\clang\test\Driver\Output\offload-parallel-device-cc1.cu.tmp && c:\_work\llvm-project\llvm-project\build\bin\clang.exe -x cuda --target=x86_64-unknown-linux-gnu    -nocudainc -nocudalib    --cuda-gpu-arch=sm_70 --cuda-gpu-arch=sm_80 --offload-jobs=2    --cuda-device-only -S -Werror C:\_work\llvm-project\llvm-project\clang\test\Driver\offload-parallel-device-cc1.cu
# executed command: cd 'C:\_work\llvm-project\llvm-project\build\tools\clang\test\Driver\Output\offload-parallel-device-cc1.cu.tmp'
# note: command had no output on stdout or stderr
# executed command: 'c:\_work\llvm-project\llvm-project\build\bin\clang.exe' -x cuda --target=x86_64-unknown-linux-gnu -nocudainc -nocudalib --cuda-gpu-arch=sm_70 --cuda-gpu-arch=sm_80 --offload-jobs=2 --cuda-device-only -S -Werror 'C:\_work\llvm-project\llvm-project\clang\test\Driver\offload-parallel-device-cc1.cu'
# note: command had no output on stdout or stderr
# RUN: at line 22
c:\_work\llvm-project\llvm-project\build\bin\clang.exe -x hip --target=x86_64-unknown-linux-gnu    -nostdinc -nogpuinc -nohipwrapperinc -nogpulib    --offload-arch=gfx900 --offload-arch=gfx906 --offload-jobs=2    --offload-device-only -O3 -c -Werror C:\_work\llvm-project\llvm-project\clang\test\Driver\offload-parallel-device-cc1.cu -o C:\_work\llvm-project\llvm-project\build\tools\clang\test\Driver\Output\offload-parallel-device-cc1.cu.tmp/hip-dev.o
# executed command: 'c:\_work\llvm-project\llvm-project\build\bin\clang.exe' -x hip --target=x86_64-unknown-linux-gnu -nostdinc -nogpuinc -nohipwrapperinc -nogpulib --offload-arch=gfx900 --offload-arch=gfx906 --offload-jobs=2 --offload-device-only -O3 -c -Werror 'C:\_work\llvm-project\llvm-project\clang\test\Driver\offload-parallel-device-cc1.cu' -o 'C:\_work\llvm-project\llvm-project\build\tools\clang\test\Driver\Output\offload-parallel-device-cc1.cu.tmp/hip-dev.o'
# .---command stderr------------
# | clang: error: argument unused during compilation: '-nohipwrapperinc' [-Werror,-Wunused-command-line-argument]
# `-----------------------------
# error: command failed with exit status: 1

--

```
</details>

If these failures are unrelated to your changes (for example tests are broken or flaky at HEAD), please open an issue at https://github.com/llvm/llvm-project/issues and add the `infrastructure` label.

https://github.com/llvm/llvm-project/pull/233184