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This fixes tracking of the alias-set of partial defs for use by redundant store removal. 2020-01-23 Richard Biener <rguenther@suse.de> PR tree-optimization/93381 * tree-ssa-sccvn.c (vn_walk_cb_data::push_partial_def): Take alias-set of the def as argument and record the first one. (vn_walk_cb_data::first_set): New member. (vn_reference_lookup_3): Pass the alias-set of the current def to push_partial_def. Fix alias-set used in the aggregate copy case. (vn_reference_lookup): Consistently set *last_vuse_ptr. * real.c (clear_significand_below): Fix out-of-bound access. * gcc.dg/torture/pr93354.c: New testcase.
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