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J. Nick Koston
b8e4343d86
Split the single loop into two paths (with/without separator) to eliminate the per-byte branch on separator. In the separator path, write the separator unconditionally and overwrite the last one with the null terminator. This also lets the compiler use constant stride values (2 or 3) instead of a runtime variable. Benchmarks show ~16-20% improvement on the separator path (format_hex_pretty_to, format_mac_addr_upper).
