Basic/vector/int-convert.cpp' FAILED on unrelated changes

[KseniyaTikhomirova]

Win testing fails with one test timeout.
Observed in two PRs:
#11758
#12001

e2e / Intel GEN12 Graphics with Level Zero

TIMEOUT: SYCL :: Basic/vector/int-convert.cpp (507 of 1755)
******************** TEST 'SYCL :: Basic/vector/int-convert.cpp' FAILED ********************
Exit Code: 15
Timeout: Reached timeout of [60](https://github.com/intel/llvm/actions/runs/6983109057/job/19047201246?pr=12004#step:12:61)0 seconds

Command Output (stdout):
--
# RUN: at line 10
D:/github/_work/llvm/llvm/install/bin/clang++.exe   -fsycl -fsycl-targets=spir[64](https://github.com/intel/llvm/actions/runs/6983109057/job/19047201246?pr=12004#step:12:65) D:\github\_work\llvm\llvm\llvm\sycl\test-e2e\Basic\vector\int-convert.cpp -o D:\github\_work\llvm\llvm\build-e2e\Basic\vector\Output\int-convert.cpp.tmp.out -DSYCL2020_DISABLE_DEPRECATION_WARNINGS
# executed command: D:/github/_work/llvm/llvm/install/bin/clang++.exe -fsycl -fsycl-targets=spir64 'D:\github\_work\llvm\llvm\llvm\sycl\test-e2e\Basic\vector\int-convert.cpp' -o 'D:\github\_work\llvm\llvm\build-e2e\Basic\vector\Output\int-convert.cpp.tmp.out' -DSYCL2020_DISABLE_DEPRECATION_WARNINGS
# note: command had no output on stdout or stderr
# RUN: at line 11
env ONEAPI_DEVICE_SELECTOR=ext_oneapi_level_zero:gpu  D:\github\_work\llvm\llvm\build-e2e\Basic\vector\Output\int-convert.cpp.tmp.out
# executed command: env ONEAPI_DEVICE_SELECTOR=ext_oneapi_level_zero:gpu 'D:\github\_work\llvm\llvm\build-e2e\Basic\vector\Output\int-convert.cpp.tmp.out'
# note: command had no output on stdout or stderr
# RUN: at line 13
D:/github/_work/llvm/llvm/install/bin/clang++.exe   -fsycl -fpreview-breaking-changes -DSYCL2020_DISABLE_DEPRECATION_WARNINGS D:\github\_work\llvm\llvm\llvm\sycl\test-e2e\Basic\vector\int-convert.cpp -o D:\github\_work\llvm\llvm\build-e2e\Basic\vector\Output\int-convert.cpp.tmp2.out
# executed command: D:/github/_work/llvm/llvm/install/bin/clang++.exe -fsycl -fpreview-breaking-changes -DSYCL2020_DISABLE_DEPRECATION_WARNINGS 'D:\github\_work\llvm\llvm\llvm\sycl\test-e2e\Basic\vector\int-convert.cpp' -o 'D:\github\_work\llvm\llvm\build-e2e\Basic\vector\Output\int-convert.cpp.tmp2.out'
# note: command had no output on stdout or stderr
# RUN: at line 14
env ONEAPI_DEVICE_SELECTOR=ext_oneapi_level_zero:gpu  D:\github\_work\llvm\llvm\build-e2e\Basic\vector\Output\int-convert.cpp.tmp2.out
# executed command: env ONEAPI_DEVICE_SELECTOR=ext_oneapi_level_zero:gpu 'D:\github\_work\llvm\llvm\build-e2e\Basic\vector\Output\int-convert.cpp.tmp2.out'
# note: command had no output on stdout or stderr
# error: command failed with exit status: 15
# error: command reached timeout: True

[AlexeySachkov]

It seems like in-memory cache for programs doesn't work on Windows for (at least) this test case and that is likely what causes the slowdown, because we are re-JIT-ing the whole program for every single kernel (and we have 400+ of them in that test).