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3f16a16781
This improves a previous heuristic to sort address-taken variables first (because those appear in points-to bitmaps) by tracking which variables appear in ADDRESSOF constraints (there's also graph->address_taken but that's computed only later). This shaves off 30s worth of compile-time for the full testcase in PR38474 (which then still takes 965s to compile at -O2). 2021-02-16 Richard Biener <rguenther@suse.de> PR tree-optimization/38474 * tree-ssa-structalias.c (variable_info::address_taken): New. (new_var_info): Initialize address_taken. (process_constraint): Set address_taken. (solve_constraints): Use the new address_taken flag rather than is_reg_var for sorting variables. (dump_constraint): Dump the variable number if the name is just NULL.
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