Reuse computed ray bitboard in update_piece_threats

[zungur]

Reuse the already-computed ray instead of calling ray_pass_bb a second time with identical arguments.

No functional change

[github-actions]

(execution 27386701076 / attempt 1)

[coderabbitai]

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Plan: Pro

Run ID: 9c9fb680-eb4a-43c5-a6b9-24dceb6352b1

📥 Commits

Reviewing files that changed from the base of the PR and between 86f1df7 and f8e8424.

📒 Files selected for processing (1)

• src/position.cpp

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📝 Walkthrough

Walkthrough

This pull request optimizes the Position::update_piece_threats function in src/position.cpp. The change modifies the filtering condition inside the slider-processing loop that checks for discovered slider threats. Instead of recalculating the ray bitboard by calling ray_pass_bb(sliderSq, s), the condition now reuses the ray variable that was already computed earlier in the loop. This eliminates a redundant bitboard calculation while maintaining identical logic.

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