[PATCH] Enhance ifcombine to recover non short circuit branches

[Marc Glisse]

On Wed, 16 Oct 2013, Zhenqiang Chen wrote:

> The patch enhances ifcombine pass to recover some non short circuit
> branches. Basically, it will do the following transformation:
>
> Case 1:
>  if (cond1)
>    if (cond2)
> ==>
>  if (cond1 && cond2)

Hello,

it might be more clear if you wrote (cond1 & cond2) so it can't be 
confused with a short-circuit?

Using branch probabilities to guide the decision would be nice, don't know 
how hard that would be though.

-- 
Marc Glisse