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@@ -19,6 +19,10 @@ static inline void mid_oswap(unsigned char *buf, uint32_t *dest,
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uint32_t destb = dest[b];
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uint8_t swap_flag = ((mid <= desta) & (desta < hi))
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| ((lo <= destb) & (destb < mid));
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+ // The next line could be optimized with some inline assembly, since
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+ // we've already loaded desta and destb, so we could obliviously
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+ // swap those registers, and then non-obliviously write them back
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+ // out to dest[a] and dest[b].
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oswap_buffer<OSWAP_4>((unsigned char *)(dest+a),
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(unsigned char *)(dest+b), 4, swap_flag);
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oswap_buffer<oswap_style>(buf+a*block_size, buf+b*block_size,
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