ggml: adds CONV_2D op and direct GEMM Vulkan implementation#14316

Merged

0cc4m merged 10 commits intoggml-org:masterfrom

etasnadi:ggml/conv_2d

Jul 19, 2025

Commits on Jul 12, 2025

ggml/ggml-vulkan/test-backend-ops: adds CONV_2D for Vulkan
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* Performance fixes: minimized branch divergence, uses collectives to
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Commits on Jul 13, 2025

* Apple/Win32 compile errors fixed
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Commits on Jul 14, 2025

Collectives disabled by default.
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Commits on Jul 15, 2025

Intel support is disabled as the performance is poor.
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Commits on Jul 16, 2025

Commits on Jul 18, 2025

Triggering pipeline relaunch.
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Commits on Jul 19, 2025

Code formatted with .clang-format.
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