Revert "FIX: disable warpspeed scan (#2062)"

[bdice]

This reverts commit fc3d6c1.

rapidsai/rapids-cmake#1018 updated to a newer CCCL version with a fix for the Warpspeed kernel bugs.

[coderabbitai]

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ℹ️ Recent review info

⚙️ Run configuration

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📥 Commits

Reviewing files that changed from the base of the PR and between 90c18a8 and 8fb0a2f.

📒 Files selected for processing (1)

• cpp/cmake/modules/ConfigureCUDA.cmake

💤 Files with no reviewable changes (1)

• cpp/cmake/modules/ConfigureCUDA.cmake

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📝 Walkthrough

Summary by CodeRabbit

• Chores
  • Updated CUDA build configuration to enable warpspeed scan optimization by default, which may improve performance on supported GPU architectures.

Walkthrough

The PR removes a compiler flag definition (-DCCCL_DISABLE_WARPSPEED_SCAN) from the CUDA CMake configuration module. This 4-line deletion disables the explicit build-time suppression of CCCL warpspeed scan functionality, allowing the feature to be enabled by default during compilation.

Changes

Warpspeed scan compiler flag removal

Layer / File(s)	Summary
Remove CCCL_DISABLE_WARPSPEED_SCAN from compiler flags cpp/cmake/modules/ConfigureCUDA.cmake	The -DCCCL_DISABLE_WARPSPEED_SCAN definition is removed from both CUVS_CXX_FLAGS and CUVS_CUDA_FLAGS, enabling warpspeed scan by default.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Possibly related PRs

• rapidsai/cuvs#2062: Adds the -DCCCL_DISABLE_WARPSPEED_SCAN compiler flag workaround that this PR reverses.

Suggested labels

improvement, non-breaking

Suggested reviewers

• cjnolet

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main change: reverting a previous commit that disabled warpspeed scan, which aligns with the CMake module removing the disable compiler definition.
Description check	✅ Passed	The description is relevant to the changeset, explaining the rationale for the revert (updated CCCL version with Warpspeed kernel bug fixes) and referencing the specific commit being reverted.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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