This is the mail archive of the gcc@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: RFC: generic vectors and GPR/simd duality


Why does V4SI take four GPRs, that's the question.  If you treat them
as V2SI registers GCC ought to be able to synthesize the V4SI as two
V2SIs.  It might be as simple as "fixing" HARD_REGNO_NREGS... probably
not, though.

Nope, I remember somewhere in the code reading "it is not worth" synthesizing a vector mode out of smaller vector modes.


Paolo


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]