diff options
| author | Richard Biener <rguenther@suse.de> | 2019-07-08 07:09:24 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2019-07-08 07:09:24 +0000 |
| commit | 38988cbf9ebaa96fb1e891a46aa063f0c298a2e2 (patch) | |
| tree | 0f54d5e9ceddc39613106ca89f748a865a10a7f9 /gcc/ada | |
| parent | 8849d5034c5ab5c2e6f3fc17209504576e7c6dd4 (diff) | |
| download | gcc-38988cbf9ebaa96fb1e891a46aa063f0c298a2e2.zip gcc-38988cbf9ebaa96fb1e891a46aa063f0c298a2e2.tar.gz gcc-38988cbf9ebaa96fb1e891a46aa063f0c298a2e2.tar.bz2 | |
re PR tree-optimization/83518 (Missing optimization: useless instructions should be dropped)
2019-07-08 Richard Biener <rguenther@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.
* gcc.dg/tree-ssa/ssa-fre-73.c: New testcase.
* gcc.dg/tree-ssa/ssa-fre-74.c: Likewise.
* gcc.dg/tree-ssa/ssa-fre-75.c: Likewise.
* gcc.dg/tree-ssa/ssa-fre-76.c: Likewise.
* g++.dg/tree-ssa/pr83518.C: Likewise.
From-SVN: r273194
Diffstat (limited to 'gcc/ada')
0 files changed, 0 insertions, 0 deletions