[Libre-soc-bugs] [Bug 238] POWER Compressed Formal Standard writeup

bugzilla-daemon at libre-soc.org bugzilla-daemon at libre-soc.org
Sun Nov 22 01:22:40 GMT 2020


--- Comment #51 from Jacob Lifshay <programmerjake at gmail.com> ---
(In reply to Luke Kenneth Casson Leighton from comment #46)
> https://godbolt.org/z/enTPes
> hmmm this short example seems to be using an awful lot of r1 *and* r31 LD/ST

That's because you forgot to enable optimizations -- we *should not* be
optimizing compressed instructions for gcc's unoptimized output because that's
not the code you'll see when people care about going fast and/or being small.

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