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Share application objects and use LLD in CI - #8362

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Amaury Chamayou (achamayou) wants to merge 4 commits into
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achamayou-ci-build-performance
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Share application objects and use LLD in CI#8362
Amaury Chamayou (achamayou) wants to merge 4 commits into
mainfrom
achamayou-ci-build-performance

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@achamayou

@achamayou Amaury Chamayou (achamayou) commented Sep 12, 2026

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CI build gains

Share compatible application objects across all jobs and use LLD for Virtual A/B/C only, without removing tests or adding a build cache. SNP keeps the default linker to avoid LLD installation overhead, including in shared image provisioning. Ninja elapsed-time and log instrumentation are retained.

Virtual Ninja build Before After Reduction
A (clang-tidy) 478.8 s 465.2 s 2.8%
B 191.8 s 182.5 s 4.8%
C 189.2 s 183.8 s 2.8%

One earlier matched baseline / optimized comparison from empty build directories. These historical virtual-job timings exclude setup and tests; they are not a pipeline-latency claim.

The updated SNP linker policy has not been benchmarked. No SNP speedup or five-job aggregate saving is claimed.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
@achamayou

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Too little gain, not worth the extra complexity.

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