http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51244
--- Comment #5 from Oleg Endo <oleg.e...@t-online.de> 2011-12-28 02:44:05 UTC
---
(In reply to comment #2)
> (In reply to comment #1)
> >
> > BTW, OT, (a != b || a != c) ? b : c could be reduced to b, I think.
> >
>
> Yes, very much so.
> It is reduced to "return b" for -m2, -m2e, -m2a, -m3, -m3e
> but not for -m1 and -m4*.
This seems to be due to the following in sh.h:
#define BRANCH_COST(speed_p, predictable_p) \
(TARGET_SH5 ? 1 : ! TARGET_SH2 || TARGET_HARD_SH4 ? 2 : 1)
