[Bug tree-optimization/50763] [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -ftree-tail-merge

[vries at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50763

--- Comment #6 from vries at gcc dot gnu.org 2011-10-19 15:48:38 UTC ---
Created attachment 25556
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25556
Updated patch, tries to keep dominance info up-to-date.