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[WIP] Share bitset population-count launchers - #2900

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@divyegala divyegala commented Oct 22, 2026 •

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Own population-count and count-bits dispatch once and suppress incidental re-instantiation in the ordinary bitset source.

The existing generate_inst_matrix expands ordinary JSON matrices directly into separate .cu files, with one concrete owning instantiation per generated translation unit. Launcher declarations stay in headers; host definitions and the corresponding device kernels stay in CUDA sources. Shared lower kernels have their own owners.

Prerequisites: main.

Diff against this PR’s parent: 12 files, +244/−5 lines.

Validation: native JSON/CMake generation checked on this exact branch and its dependency closure; each generated owner has one owning instantiation. Complete-library builds, device-kernel census, and focused runtime checks are tracked in #2888.

Binary savings: the previous figures measured the grouped-owner implementation and are retired for this revised layout. Per-PR CUDA 12.9 and 13.3 complete-library remeasurement is pending; increased fatbin-container overhead means the old figures must not be carried forward.

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@divyegala
divyegala force-pushed the codex/dedup-bitset-view-count branch from a4d268e to df90447 Compare October 23, 2026 02:21
@divyegala divyegala changed the title [WIP] Centralize the shared bitset-view count instantiation [WIP] Share bitset population-count launchers Oct 23, 2026
@divyegala
divyegala changed the base branch from main to codex/dedup-cuda-radix-sorting October 23, 2026 02:21
@divyegala
divyegala force-pushed the codex/dedup-bitset-view-count branch from df90447 to 0fd6bdb Compare October 23, 2026 07:44
@divyegala
divyegala changed the base branch from codex/dedup-cuda-radix-sorting to main October 23, 2026 07:44
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