Add e2e test for queue::fill with a range of pattern sizes

[rafbiels]

Update the UR tag to include oneapi-src/unified-runtime#2273 fixing queue::fill for the CUDA and HIP backends. It was previously producing incorrect outputs for any pattern size other than 1, 2, or a multiple of 4 bytes. A new optimisation is also added which speeds up the fill greatly if the pattern equals to the first word repeated throughout (e.g. all zeros). See the UR PR for more details.

The UR tag update was collected in #16040 so now this PR only adds an e2e test as stated below.

Add a new e2e test to validate queue::fill outputs for any pattern size between 1 and 32 bytes. This test fails for CUDA and HIP before the UR change and passes with this PR. Other backends already worked correctly.

[maarquitos14]

LGTM.

[callumfare]

Hi @rafbiels - I'd like to merge the UR side of this soon. Could you rebase this PR and ensure the CI is run? If it passes I'll merge the UR PR and update the tag here.

[rafbiels]

Hi @callumfare, I rebased both the UR side (onto the current tag used in intel/llvm) and here (onto HEAD of sycl branch) to keep the branches consistent. Feel free to launch the CI as I don't have the permission to do so.

[callumfare]

@rafbiels Thanks, I ran the CI but it looks like the new test failed on Windows

[rafbiels]

@rafbiels Thanks, I ran the CI but it looks like the new test failed on Windows

Looks like this is the only workflow compiling LIT tests with -Werror and the warnings are just printf type format mismatch after updating variables to size_t (as requested in review). I'll push a fix shortly!

I'm not quite sure where this configuration difference comes from. Running llvm-lit with default config on Linux doesn't add -Werror, but that's for another discussion.

I'm wrong, it's much more trivial (and annoying) than that. Both platforms use -Werror but on Linux sizeof(unsigned long) == sizeof(size_t) (so no warning) but on Windows that's not the case! 🤦 Anyway, fix coming in shortly.

[rafbiels]

The failure should be fixed now, please restart the CI when possible

[rafbiels]

@callumfare looks like the UR change was collected into intel/llvm as part of #16040, but I would still like the new e2e test here to be merged. Shall I rebase and update this PR to just add the test now (no UR tag change)?

[rafbiels]

@intel/llvm-gatekeepers could I have a re-run of the CI here and potentially a re-approval please?

The code hasn't changed since the last approval. The only difference is that this PR is no longer updating the unified-runtime tag because the corresponding UR change was already merged elsewhere. It's just the e2e test now.

[rafbiels]

I'm looking into the failure on 12th-gen CPU with OpenCL:
https://github.com/intel/llvm/actions/runs/11971631535/job/33695502538?pr=15991
At the moment this doesn't look to be an issue with the test itself, but rather a backend issue exposed by the new test.