>
> I think the right fix to the problem is to realize that BBs with the
> following conditions y_8 !=0, p.0_10 !=0, and x_5 !=0 are actually
> control equivalent. This fact allows simplifying the USE predicates
> from (y_8 !=0 OR p.0_10 !=0 OR x_5 !=0) into just p.0_10 !=0 which is
> the same as
I have concerns with the proposed this patch:
1) not sharing cd_root may lead to difficulties in later predication
simplication
2) the change to check post-dom may also lead to incomplete predicate chain.
I think the right fix to the problem is to realize that BBs with the
following conditions y_
On Mon, May 12, 2014 at 5:42 AM, Patrick Palka wrote:
> Hi,
>
> This patch fixes a bogus warning generated by -Wmaybe-uninitialized.
> The problem is that we sometimes fail to acknowledge a defining edge
> belonging to a control-dependence chain because we assume that each
> defining edge shares t
Hi,
This patch fixes a bogus warning generated by -Wmaybe-uninitialized.
The problem is that we sometimes fail to acknowledge a defining edge
belonging to a control-dependence chain because we assume that each
defining edge shares the same control-dependence root. But this may not
be true if a de
