[SYCL] Fix accessor fill for unsupported patterns

[steffenlarsen]

Currently most of the PI backends have similar pattern limitations as OpenCL, i.e. only certain sizes of patterns are supported. This is not currently being considered by the implementation however, potentially causing the backend calls to fail. This commit makes the runtime fall back to a fill kernel if the pattern has an unsupported size.

[bso-intel]

LGTM

[bader]

abi/sycl_symbols_windows.dump fails on Windows.

FAIL: SYCL :: abi/sycl_symbols_windows.dump (13 of 446)
******************** TEST 'SYCL :: abi/sycl_symbols_windows.dump' FAILED ********************
Script:
--
: 'RUN: at line 6';   env LLVM_BIN_PATH=D:/github/_work/llvm/llvm/build/bin/ "C:\Python311\python.exe" D:/github/_work/llvm/llvm/src/sycl/tools//abi_check.py --mode check_symbols --reference D:\github\_work\llvm\llvm\src\sycl\test\abi\sycl_symbols_windows.dump D:/github/_work/llvm/llvm/build/bin//sycl6.dll
--
Exit Code: 4[294](https://github.com/intel/llvm/actions/runs/4571286347/jobs/8069438775#step:10:295)967[295](https://github.com/intel/llvm/actions/runs/4571286347/jobs/8069438775#step:10:296)

Command Output (stdout):
--
$ ":" "RUN: at line 6"
note: command had no output on stdout or stderr
$ "env" "LLVM_BIN_PATH=D:/github/_work/llvm/llvm/build/bin/" "C:\Python311\python.exe" "D:/github/_work/llvm/llvm/src/sycl/tools//abi_check.py" "--mode" "check_symbols" "--reference" "D:\github\_work\llvm\llvm\src\sycl\test\abi\sycl_symbols_windows.dump" "D:/github/_work/llvm/llvm/build/bin//sycl6.dll"
# command output:
There are new symbols in the new library. It is a non-breaking change. Refer to sycl/doc/developer/ABIPolicyGuide.md for further instructions.
The following symbols are new to the object file:

?isBackendSupportedFillSize@handler@_V1@sycl@@CA_N_K@Z

error: command failed with exit status: 0xffffffff

--

[steffenlarsen]

abi/sycl_symbols_windows.dump fails on Windows.

FAIL: SYCL :: abi/sycl_symbols_windows.dump (13 of 446)
******************** TEST 'SYCL :: abi/sycl_symbols_windows.dump' FAILED ********************
Script:
--
: 'RUN: at line 6';   env LLVM_BIN_PATH=D:/github/_work/llvm/llvm/build/bin/ "C:\Python311\python.exe" D:/github/_work/llvm/llvm/src/sycl/tools//abi_check.py --mode check_symbols --reference D:\github\_work\llvm\llvm\src\sycl\test\abi\sycl_symbols_windows.dump D:/github/_work/llvm/llvm/build/bin//sycl6.dll
--
Exit Code: 4[294](https://github.com/intel/llvm/actions/runs/4571286347/jobs/8069438775#step:10:295)967[295](https://github.com/intel/llvm/actions/runs/4571286347/jobs/8069438775#step:10:296)

Command Output (stdout):
--
$ ":" "RUN: at line 6"
note: command had no output on stdout or stderr
$ "env" "LLVM_BIN_PATH=D:/github/_work/llvm/llvm/build/bin/" "C:\Python311\python.exe" "D:/github/_work/llvm/llvm/src/sycl/tools//abi_check.py" "--mode" "check_symbols" "--reference" "D:\github\_work\llvm\llvm\src\sycl\test\abi\sycl_symbols_windows.dump" "D:/github/_work/llvm/llvm/build/bin//sycl6.dll"
# command output:
There are new symbols in the new library. It is a non-breaking change. Refer to sycl/doc/developer/ABIPolicyGuide.md for further instructions.
The following symbols are new to the object file:

?isBackendSupportedFillSize@handler@_V1@sycl@@CA_N_K@Z

error: command failed with exit status: 0xffffffff

--

Seems like Windows wants that to be a symbol, for some reason. #8900 adds it to the symbol check.