https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94135
Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |segher at gcc dot gnu.org
--- Comment #1 from Segher Boessenkool <segher at gcc dot gnu.org> ---
On what CPU do subfic and neg execute at different speed?
(neg is better, of course, it doesn't write CA).
GCC does not know rotates work for any masking of the amount (with 1's in
the low 5 (resp. 6) bits); the rs6000 target code does not know about any
masking (the SHIFT_COUNT_TRUNCATED macro cannot be used, but we could have
more patterns, and then combine can do this in many cases).
