PR c++/59813 PR tree-optimization/89060 * tree-ssa-live.h (live_vars_map): New typedef. (compute_live_vars, live_vars_at_stmt, destroy_live_vars): Declare. * tree-ssa-live.c: Include gimple-walk.h and cfganal.h. (struct compute_live_vars_data): New type. (compute_live_vars_visit, compute_live_vars_1, compute_live_vars, live_vars_at_stmt, destroy_live_vars): New functions. * tree-tailcall.c: Include tree-ssa-live.h. (live_vars, live_vars_vec): New global variables. (find_tail_calls): Perform variable life analysis before punting. (tree_optimize_tail_calls_1): Clean up live_vars and live_vars_vec. * tree-inline.h (struct copy_body_data): Add eh_landing_pad_dest member. * tree-inline.c (add_clobbers_to_eh_landing_pad): Remove BB argument. Perform variable life analysis to select variables that really need clobbers added. (copy_edges_for_bb): Don't call add_clobbers_to_eh_landing_pad here, instead set id->eh_landing_pad_dest and assert it is the same. (copy_cfg_body): Call it here if id->eh_landing_pad_dest is non-NULL. * gcc.dg/tree-ssa/pr89060.c: New test. From-SVN: r271013
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