[Bug middle-end/45312] [4.4 Regression] GCC 4.4.4 miscompiles the Linux kernel
------- Comment #18 from uweigand at gcc dot gnu dot org 2010-09-07 19:18 -------
(In reply to comment #17)
> I am thinking in the same direction. merge_assign_reloads is dated by 1993.
> Since then it was not practically changed. I guess postreload can remove
> unecessary loads if it is generated without merge_assigned_reload.
>
> I've tried to compile SPEC2000 by gcc-4.4 with and without
> merge_assigned_reloads. I did not find any code difference. I've tried a lot
> of other programs with the same result. The single difference in code I found
> exists on this test case.
Thanks, that's certainly good to know!
> So I'd remove merge_assigned_reloads at all as it became obsolete long ago.
I agree, this seems the best way forward.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45312
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