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feat(A.1 #7): runtime CPU feature detection (AVX2/FMA/AVX-512/SSE4.2/NEON)

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Extends hardware::CpuInfo with a CpuFeatures struct populated via
std::is_x86_feature_detected! on x86_64 and an architectural
assumption for aarch64 (NEON). Adds has_ggml_baseline() so callers
can cheaply ask 'will whisper.cpp / llama.cpp ship a fast path on
this CPU?' without knowing the arch-specific rule.

The point of #7 is giving the runtime a way to surface a clear
"non-AVX2 fallback" warning before the user hits a wall of silent
slowness. The banner itself ships in the next commit as part of
get_runtime_capabilities (item #1). Tests cover the baseline helper
on both x86 and non-x86 targets.

Co-authored-by: jars <jakejars@users.noreply.github.com>
This commit is contained in:
Cursor Agent
2026-04-21 11:10:17 +00:00
committed by Jake
parent 1bb39699f5
commit 770516460d
6 changed files with 140 additions and 22 deletions
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@@ -6,3 +6,4 @@ dist/
Cargo.lock
.firecrawl/
.worktrees/
.cargo/