https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93661
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2020-02-10
CC| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
Bisection points to r273194:
2019-07-08 Richard Biener <rguent...@suse.de>
PR tree-optimization/83518
* tree-ssa-sccvn.c: Include splay-tree.h.
(struct pd_range, struct pd_data): New.
(struct vn_walk_cb_data): Add data to track partial definitions.
(vn_walk_cb_data::~vn_walk_cb_data): New.
(vn_walk_cb_data::push_partial_def): New.
(pd_tree_alloc, pd_tree_dealloc, pd_range_compare): New.
(vn_reference_lookup_2): When partial defs are registered give up.
(vn_reference_lookup_3): Track partial defs for memset and
constructor zeroing and for defs from constants.
