59f9ebc59e
From vaptvupt-codec tag v2.65.3. Output is byte-identical to 2.65.0 (same ratio, wire format v1.6 unchanged) but extreme-mode encode is ~1.6-2x faster (Sprint 132 optimal-parser speedup) and the extreme prepass window allocation is capped at wlog=20 = 8 MiB virtual instead of up to 128 MiB (Sprint 133 memory hygiene). Our AVX2 offset-read decoder guard is now UPSTREAM (dropped from the local patch set); the ANS safe-zone 2*SAFEZONE_MAX_RUN reserve is re-applied on top (still not upstream). make check 16/16, KAT 16/16, cross- version roundtrip with 5.1.0 archives verified.
33 lines
1.1 KiB
C
33 lines
1.1 KiB
C
/*
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* SPDX-License-Identifier: AGPL-3.0-or-later
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* Copyright (c) 2026 Cristian Cezar Moisés
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*
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* Zupt — CPU Feature Detection
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* Copyright (c) 2026 Cristian Cezar Moisés — AGPL-3.0-or-later
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*/
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#ifndef ZUPT_CPUID_H
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#define ZUPT_CPUID_H
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#include <stdint.h>
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typedef struct {
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int has_aesni; /* CPUID.01H:ECX[25] — AES-NI instructions */
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int has_avx; /* AVX (VEX-encoded SSE) — requires CPUID + OS XSAVE */
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int has_pclmul; /* CPUID.01H:ECX[1] — CLMUL (carry-less multiply) */
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int has_avx2; /* CPUID.07H:EBX[5] — AVX2 (256-bit SIMD) */
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int has_sse41; /* CPUID.01H:ECX[19] — SSE4.1 */
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} zupt_cpu_features_t;
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/*@ assigns f->has_aesni, f->has_avx, f->has_pclmul, f->has_avx2, f->has_sse41;
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@ ensures f->has_aesni == 0 || f->has_aesni == 1;
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@ ensures f->has_avx == 0 || f->has_avx == 1;
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@ ensures f->has_pclmul == 0 || f->has_pclmul == 1;
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@ ensures f->has_avx2 == 0 || f->has_avx2 == 1;
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@ ensures f->has_sse41 == 0 || f->has_sse41 == 1;
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*/
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void zupt_detect_cpu(zupt_cpu_features_t *f);
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/* Global instance — set once at program start */
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extern zupt_cpu_features_t zupt_cpu;
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#endif /* ZUPT_CPUID_H */
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