6cc886bf42
The walk_aliased_vdef calls do not update the walking budget until it is hit by a single call (and then in one case it resumes with no limit at all). The following rectifies this in multiple places. It also makes the updates more consistend and fixes determine_known_aggregate_parts to account its own alias queries. 2021-02-12 Richard Biener <rguenther@suse.de> PR middle-end/38474 * ipa-fnsummary.c (unmodified_parm_1): Only walk when fbi->aa_walk_budget is bigger than zero. Update fbi->aa_walk_budget. (param_change_prob): Likewise. * ipa-prop.c (detect_type_change_from_memory_writes): Properly account walk_aliased_vdefs. (parm_preserved_before_stmt_p): Canonicalize updates. (parm_ref_data_preserved_p): Likewise. (parm_ref_data_pass_through_p): Likewise. (determine_known_aggregate_parts): Account own alias queries. |
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