twister failing: fails platform native_posix, test lib/cmsis_dsp/filtering

[sambhurst]

Describe the bug
Locally executing twister to run the lib/cmsis_dsp/filtering test on the native_posix platform fails.

To Reproduce
Steps to reproduce the behavior:
In the zephyr directory.

1. set ZEPHYR_TOOLCHAIN_VARIANT=llvm
2. twister -p native_posix -T tests/lib/cmsis_dsp/filtering -v
3. See errors

Expected behavior
The test should pass

Impact
Push Request is blocked due to Build with Clang/LLVM failure that's caused by this error

Logs and console output

zephyrproject/zephyr$ twister -p native_posix -T tests/lib/cmsis_dsp/filtering -v
INFO    - Zephyr version: zephyr-v2.5.0-2316-g36d96d2cd9b9
INFO    - JOBS: 8
INFO    - Using 'llvm' toolchain.
INFO    - Building initial testcase list...
INFO    - 4 test scenarios (4 configurations) selected, 1 configurations discarded due to filters.
INFO    - Adding tasks to the queue...
INFO    - Added initial list of jobs to queue
INFO    - 1/3 native_posix              tests/lib/cmsis_dsp/filtering/libraries.cmsis_dsp.filtering.biquad FAILED Build failure (native)
ERROR   - see: zephyrproject/zephyr/twister-out/native_posix/tests/lib/cmsis_dsp/filtering/libraries.cmsis_dsp.filtering.biquad/build.log
INFO    - 2/3 native_posix              tests/lib/cmsis_dsp/filtering/libraries.cmsis_dsp.filtering.misc FAILED Build failure (native)
ERROR   - see: zephyrproject/zephyr/twister-out/native_posix/tests/lib/cmsis_dsp/filtering/libraries.cmsis_dsp.filtering.misc/build.log
INFO    - 3/3 native_posix              tests/lib/cmsis_dsp/filtering/libraries.cmsis_dsp.filtering.fir FAILED Build failure (native)
ERROR   - see: zephyrproject/zephyr/twister-out/native_posix/tests/lib/cmsis_dsp/filtering/libraries.cmsis_dsp.filtering.fir/build.log

INFO    - 0 of 3 test configurations passed (0.00%), 3 failed, 1 skipped with 0 warnings in 8.02 seconds
INFO    - In total 822 test cases were executed, 274 skipped on 1 out of total 346 platforms (0.29%)
INFO    - 0 test configurations executed on platforms, 3 test configurations were only built.
INFO    - Saving reports...
INFO    - Writing xunit zephyrproject/zephyr/twister-out/twister.xml...
INFO    - Writing xunit zephyrproject/zephyr/twister-out/twister_report.xml...
INFO    - Run completed

Environment (please complete the following information):

• OS: Linux
• Toolchain: LLVM

Additional context
Error from log file:

zephyrproject/modules/hal/cmsis/CMSIS/DSP/Source/FilteringFunctions/arm_biquad_cascade_df2T_f32.c:346:1: error: unknown attribute 'optimize' ignored [-Werror,-Wunknown    -attributes]
LOW_OPTIMIZATION_ENTER
^
zephyrproject/modules/hal/cmsis/CMSIS/DSP/Include/arm_math.h:8883:24: note: expanded from macro 'LOW_OPTIMIZATION_ENTER'
       __attribute__(( optimize("-O1") ))

[mengxianglinx]

clang handles attribute(( optimize("-O1") )) in different way.
add below code before line 8881 #elif defined ( GNUC ) in modules/hal/cmsis/CMSIS/DSP/Include/arm_math.h:
#elif defined ( clang )
#define LOW_OPTIMIZATION_ENTER \
__attribute__(( optnone ))
#define LOW_OPTIMIZATION_EXIT
#define IAR_ONLY_LOW_OPTIMIZATION_ENTER
#define IAR_ONLY_LOW_OPTIMIZATION_EXIT

[galak]

Not sure how you are running into this as we mark the filtering tests as not supported on llvm:

9614581

[sambhurst]

I needed to sync my repo. The tests are passing now. Thanks