tree-predcom.c: use gimple_phi in various places
This corresponds to:
[PATCH 12/89] tree-predcom.c: use gimple_phi in various places
https://gcc.gnu.org/ml/gcc-patches/2014-04/msg01229.html
from the original 89-patch kit
That earlier patch was approved by Jeff:
> OK when prerequisites have gone in.
in https://gcc.gnu.org/ml/gcc-patches/2014-05/msg00621.html
gcc/
* tree-predcom.c (find_looparound_phi): Return a gimple_phi rather
than just a gimple.
(insert_looparound_copy): Require a gimple_phi rather than just a
gimple.
(add_looparound_copies): Convert local "phi" to be a gimple_phi.
(initialize_root_vars): Likewise.
(initialize_root_vars_lm): Likewise.