> -----Original Message----- > From: Mikael Pettersson [mailto:mi...@it.uu.se] > Sent: 04 May 2013 11:51 > To: Paulo Matos > Cc: gcc@gcc.gnu.org > Subject: Re: BImode and STORE_VALUE_FLAG > > > I can't comment on the code in question, but the backend for m68k may be > affected > since it defines STORE_FLAG_VALUE as -1. Do you have a testcase that would > cause > wrong code, or a patch to cure the issue? I'd be happy to do some testing on > m68k-linux. > > /Mikael
Mikael, I have looked at m68k code and it seems that the predicate (cc reg) is FPmode. I can't see a definition of FPmode anywhere (where is it?) but I assume it's not a defined as a single bit. I think we are making the mistake of using BImode for this and therefore STORE_FLAG_VALUE of -1 is invalid (or unsupported because it's meaningless). So I guess the problem (which might not be a problem after all can't be reproduced in m68k and it's fine. I will keep researching this issue and will get back to you if I find anything interesting. In the meantime, where is FPmode defined in m68k? Paulo Matos
