On 08/22/2017 03:03 AM, Richard Biener wrote: > > The following patch makes sure to not grow the number of incoming > edges in the destination when doing split_edge on GIMPLE. That's > easy by first redirecting the existing edge to the destination > to the new block rather than creating the new fallthru from the > new block to the destination. > > Bootstrapped and tested on x86_64-unknown-linux-gnu, applied to trunk. > > Richard. > > 2017-08-22 Richard Biener <rguent...@suse.de> > > * tree-cfg.c (gimple_split_edge): Avoid reallocating target > PHI nodes. Definitely a good thing. Having PHIs get reallocated has led to some subtle bugs. I realize this isn't a complete solution to that problem, but every bit helps.
jeff
