PPC64 Compiler bug !!

Anton Blanchard anton at samba.org
Fri Jun 13 08:25:56 EST 2003

> Yes, I could also try to fix gcc to not use float regs for integer
> moves, but my attempt would also likely be blocked by the current
> rs6000 maintainers.  The trouble is that to prevent this problem
> re-occurring in kernel code, you'd need to have the options on
> *by default*, and this will have some impact on user code that could use
> extra registers.

With lazy FP save/restore in Linux we have the extra cost of taking an
exception the first time (after a context switch) we use an FP temporary.
Im guessing AIX doesnt do this.


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