Going to keep attacking the "the x86-64 ISA is really space-efficient" meme until it finally dies.
@qcar_ Interesting, but I can't reproduce the results—I just tried Thumb vs. x86-64 LZSS and I got 330 bytes vs. 609 bytes respectively
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@pcwalton the results were on "hand-optimized" code, I'm surprised the compilers can't do as well, though. -
@qcar_ x86-64 compilers don't try to pick registers to minimize the number of REX prefixes. So you end up with tons of REX bytes. - 1 more reply
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