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...d it be > possible to send a patch generated by Git because those usually do work. > > Erik I'm not very familiar with git... I hope that now I did everything correctly. The patch is in the attachment. -------------- next part -------------- A non-text attachment was scrubbed... Name: autocorr_16.patch Type: application/octet-stream Size: 5155 bytes Desc: not available Url : http://lists.xiph.org/pipermail/flac-dev/attachments/20130826/d9b3cfdd/attachment.obj

libFLAC have three SSE-accelerated functions FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_N (N = 4, 8, 12). They require lpc_order less than N. The best compression preset (flac -8) uses lpc_order up to 12; it means that during encoding FLAC also uses unaccelerated C function. I'm not very familiar with asm so I took FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_12, changed it and