gcse-common.h
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re PR rtl-optimization/64317 (Ineffective allocation of PIC base register) · af3eb110
PR rtl-optimization/64317 * Makefile.in (OBJS): Add gcse-common.c * gcse.c: Include gcse-common.h (struct modify_pair_s): Move structure definition to gcse-common.h (compute_transp): Move function to gcse-common.c. (canon_list_insert): Similarly. (record_last_mem_set_info): Break out some code and put it into gcse-common.c. Call into the new common code. (compute_local_properties): Pass additional arguments to compute_transp. * postreload-gcse.c: Include gcse-common.h and df.h (modify_mem_list_set, blocks_with_calls): New variables. (modify_mem_list, canon_modify_mem_list, transp): Likewise. (get_bb_avail_insn): Pass in the expression index too. (alloc_mem): Allocate memory for the new bitmaps and lists. (free_mem): Free memory for the new bitmaps and lists. (insert_expr_in_table): Record a bitmap index for each entry we add to the table. (record_last_mem_set_info): Call into common code in gcse-common.c. (get_bb_avail_insn): If no available insn was found in the requested BB. If BB has a single predecessor, see if the expression is transparent in BB and available in that single predecessor. (compute_expr_transp): New wrapper for compute_transp. (eliminate_partially_redundant_load): Pass expression's bitmap_index to get_bb_avail_insn. Compute next_pred_bb_end a bit later. (gcse_after_reload_main): If there are elements in the hash table, then compute transparency for all the elements in the hash table. * gcse-common.h: New file. * gcse-common.c: New file. From-SVN: r221585
Jeff Law committed