This is the mail archive of the gcc-patches@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: [PATCH ARM]Extend thumb1_reorg to save more comparison instructions


> I haven't looked at compare-elim, but probably not.  Thumb1 doesn't use
> cc[0] and doesn't expose flag setting instructions in a MI manner (since
> add instructions clobber the flags).

compare-elim is supposed to be designed for this kind of targets, but of 
course you need to split the instructions after reload.

-- 
Eric Botcazou


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