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kleidiai: Add SME vs SME2 distinction in kernel dispatch (llama/25478)

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The current integration treats SME as a single capability (CPU_FEATURE_SME)
with no distinction between SME(v1) and SME2. The kernels dispatched under
CPU_FEATURE_SME use SME2-specific instructions, making dispatch incorrect
on SME(v1)-only hardware.

We introduce build-time and runtime distinction between SME and SME2, and
wire SME(v1) and SME2 kernels based on actual hardware support.
This commit is contained in:
Rajendra Matcha
2026-07-30 16:31:43 +03:00
committed by Georgi Gerganov
parent 913750f43d
commit b90a4f48bb
8 changed files with 178 additions and 13 deletions
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ggml/include/ggml-cpu.h
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@@ -100,6 +100,7 @@ extern "C" {
GGML_BACKEND_API int ggml_cpu_has_sve (void);
GGML_BACKEND_API int ggml_cpu_get_sve_cnt (void); // sve vector length in bytes
GGML_BACKEND_API int ggml_cpu_has_sme (void);
GGML_BACKEND_API int ggml_cpu_has_sme2 (void);
// other
GGML_BACKEND_API int ggml_cpu_has_riscv_v (void);
GGML_BACKEND_API int ggml_cpu_get_rvv_vlen (void); // risc-v vector length in bytes