[E2E][sycl-rel 6.3] Make lit search tools in bin/ directory

[uditagarwal97]

Fixes E2E test failure in SeperateCompile/test.cpp in sycl-rel 6.3 ABI testing(https://github.com/intel/llvm/actions/runs/18599730732/job/53035028308#step:27:2964)
The test failure is because of lit using system-installed sycl-post-link instead of the newly built one. This PR forces lit to find and use tools from <compiler build>/bin directory.
These changes are already in sycl branch (brought in by #19669)

[KornevNikita]

LGTM, but why there is no pre-commit run?

[uditagarwal97]

LGTM, but why there is no pre-commit run?

Weird. IDK. @AlexeySachkov Do you know what could be going wrong?

[AlexeySachkov]

LGTM, but why there is no pre-commit run?

Weird. IDK. @AlexeySachkov Do you know what could be going wrong?

uditagarwal97 changed the base branch from sycl to sycl-rel-6_3 20 hours ago

This looks suspicious. I wonder if re-opening the PR would help. Worst case scenario re-creating it directly to sycl-rel-6_3 should definitely work.

I don't have fundamental objections against the change, but I would like to see the pre-commit run to confirm that it isn't accidentally broken by this patch (and that the issue with the test is actually resolved)

[uditagarwal97]

LGTM, but why there is no pre-commit run?

Weird. IDK. @AlexeySachkov Do you know what could be going wrong?

uditagarwal97 changed the base branch from sycl to sycl-rel-6_3 20 hours ago

This looks suspicious. I wonder if re-opening the PR would help. Worst case scenario re-creating it directly to sycl-rel-6_3 should definitely work.

I don't have fundamental objections against the change, but I would like to see the pre-commit run to confirm that it isn't accidentally broken by this patch (and that the issue with the test is actually resolved)

Thanks, re-opening helped.

[aelovikov-intel]

and that the issue with the test is actually resolved

IIUC, it won't be tested here. Instead, we'd need to merge, re-build the image with the sycl-rel-6.3 pre-compiled E2E binaries and only then have a passing pre-commit job in trunk. @uditagarwal97 can correct me if I'm wrong.

[uditagarwal97]

and that the issue with the test is actually resolved

IIUC, it won't be tested here. Instead, we'd need to merge, re-build the image with the sycl-rel-6.3 pre-compiled E2E binaries and only then have a passing pre-commit job in trunk. @uditagarwal97 can correct me if I'm wrong.

@aelovikov-intel I think we should be able to verify the fix using pre-commit. I have another PR targeted to sycl-rel 6.3 (#20390) where all pre-commit E2E jobs failed due to this test failure. Comparing the CI runs in this PR and that in #20390, this PR works as intended and the issue is resolved.

[uditagarwal97]

Merging this PR to fix pre-commit - SeperateCompile/test.cpp is failing on every other PR.