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ggml-cpu: Faster IQ1 mul_mat_vec on AVX2 using BMI2 instructions (#12154)

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* ggml-cpu: Faster IQ1 mul_mat_vec on AVX2 using BMI2 instructions

* cmake: Add GGML_BMI2 build option

* ggml: enable BMI2 on relevant CPU variants

* ggml-cpu: include BMI2 in backend score

* ggml-cpu: register BMI2 in ggml_backend_cpu_get_features

* ggml-cpu: add __BMI2__ define when using MSVC
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Rémy O 2025-03-06 02:26:10 +01:00 • committed by GitHub
parent 5e43f104cc
commit 07d1572347
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8 changed files with 68 additions and 18 deletions
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ggml/src/ggml-cpu/cpu-feats-x86.cpp
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@ -278,6 +278,10 @@ static int ggml_backend_cpu_x86_score() {
if (!is.SSE42()) { return 0; }
score += 1<<2;
#endif
#ifdef GGML_BMI2
if (!is.BMI2()) { return 0; }
score += 1<<3;
#endif
#ifdef GGML_AVX
if (!is.AVX()) { return 0; }
score += 1<<4;