M68K codegen problem with `unsigned long long' - showstopper for NetBSD
Jeffrey A Law
Sat Aug 29 15:35:00 GMT 1998
In message < Pine.NEB.email@example.com >you write:
> >From reports sent me by <firstname.lastname@example.org>, there seems to be a serious codegen
> bug affecting `unsigned long long', or possibly even register constraints.
> I can't reproduce it with a small test case, but I have attached m68k.tgz
> which contains:
> - prepro.c, the preprocessed C source which can be run through cc/cc1 to
> produce the resultant assembly/object;
> - opt.s, the output of "cc -O -S prepro.c"
> - nonopt.s, the output of "cc -S prepro.c"
> Target is m68k-netbsd, but I could cause the same codegen on "m68k-coff",
> so it seems to affect all m68k variants.
It's a 3+ year old bug in the m68k backend. Yes, you read that correctly,
this bug was introduced in May 1995. So, this bug is actually in
gcc2.7.2, gcc-2.8 and egcs1.0 :(
I'll have a patch checked into the mainline and branch sources
in a few minutes.
More information about the Gcc-bugs