silk_LPC_analysis_filter neon implementation#487
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Hi, @jmvalin Could you please help review this PR when you have a moment? It includes targeted silk_LPC_analysis_filter neon implementation. Please let me know if you need any additional information or if there are any changes required. Thanks in advance for your time! |
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Changes：
Add a NEON-vectorized silk_LPC_analysis_filter() that processes 8 filter taps per iteration using paired vmlal_s16 accumulators (int32x4_t), when the remaining trailing data is less than 8 units, the execution falls back to the original C implementation. The original scalar implementation is preserved as silk_LPC_analysis_filter_c() for reference and OPUS_CHECK_ASM validation.