[Bug tree-optimization/81488] [8 Regression] gcc goes off the limits allocating memory in gimple-ssa-strength-reduction.c
wschmidt at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Tue Aug 22 20:15:00 GMT 2017
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81488
--- Comment #7 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Author: wschmidt
Date: Tue Aug 22 17:32:26 2017
New Revision: 251286
URL: https://gcc.gnu.org/viewcvs?rev=251286&root=gcc&view=rev
Log:
2017-08-22 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
PR tree-optimization/81488
* gimple-ssa-strength-reduction (struct slsr_cand_d): Add visited
and cached_basis fields.
(MAX_SPREAD): New constant.
(alloc_cand_and_find_basis): Initialize new fields.
(clear_visited): New function.
(create_phi_basis_1): Rename from create_phi_basis, set visited
and cached_basis fields.
(create_phi_basis): New wrapper function.
(phi_add_costs_1): Rename from phi_add_costs, add spread
parameter, set visited field, short-circuit when limits reached.
(phi_add_costs): New wrapper function.
(record_phi_increments_1): Rename from record_phi_increments, set
visited field.
(record_phi_increments): New wrapper function.
(phi_incr_cost_1): Rename from phi_incr_cost, set visited field.
(phi_incr_cost): New wrapper function.
(all_phi_incrs_profitable_1): Rename from
all_phi_incrs_profitable, set visited field.
(all_phi_incrs_profitable): New wrapper function.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/gimple-ssa-strength-reduction.c
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