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+2018-05-15 Richard Biener <rguenther@suse.de>
+
+ * tree-ssa-dse.c (dse_classify_store): Remove use_stmt parameter,
+ add by_clobber_p one. Change algorithm to collect all defs
+ representing uses we need to walk and try reducing them to
+ a single one before failing.
+ (dse_dom_walker::dse_optimize_stmt): Adjust.
+
2018-05-13 Mark Wielaard <mark@klomp.org>
* dwarf2out.c (dwarf_OP): Handle DW_OP_addrx and DW_OP_constx.