[Bug middle-end/32044] [4.3 regression] udivdi3 counterproductive, unwarranted use

[rguenther at suse dot de]

------- Comment #24 from rguenther at suse dot de  2007-11-09 17:11 -------
Subject: Re:  [4.3 regression] udivdi3 counterproductive,
 unwarranted use

On Fri, 9 Nov 2007, bunk at stusta dot de wrote:

> ------- Comment #23 from bunk at stusta dot de  2007-11-09 17:09 -------
> We need a way to globally prevent it in the kernel or it will be a repeating
> source of problems there.
> 
> Is -fno-tree-scev-cprop a reasonable (and not too expensive) workaround for the
> Linux kernel?

Yes, as is using volatile on this particular loop variable.

Richard.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32044