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1997-09-08alias.c (init_alias_analysis): Clean up incompatible pointer type warning in ↵Weiwen Liu1-1/+1
bzero. * alias.c (init_alias_analysis): Clean up incompatible pointer type warning in bzero. * regmove.c (regmove_optimize): Ditto. * haifa-sched.c (find_rgns): Ditto. * haifa-sched.c (print_value): Clean up ptr->int cast warnings. From-SVN: r15169
1997-09-03Fix H.J. Lu's alpha-linux aliasing bug.Jim Wilson1-2/+10
* alias.c (true_dependence): Address with AND can alias scalars. (anti_dependence, output_dependence): Likewise. From-SVN: r15063
1997-09-03Fix minor alias typo found while working on H.J. Lu's alpha-linux alias bug.Jim Wilson1-1/+1
* alias.c (true_dependence): Test x for BLKmode, in addition to mem. From-SVN: r15061
1997-08-22Fix m68k-next-nextstep3 stage2 enquire compilation hang reported by Moene.Jim Wilson1-1/+1
* alias.c (true_dependence): Pass x_addr not x to varies. From-SVN: r14898
1997-08-22alias.c (find_base_value): Improve handling of PLUS, MINUS, and LO_SUM.John F. Carr1-43/+58
* alias.c (find_base_value): Improve handling of PLUS, MINUS, and LO_SUM. (record_set): Handle LO_SUM like PLUS. (init_alias_analysis): When following chains of base addresses, do not stop on reaching a hard register. Updates from jfc. From-SVN: r14888
1997-08-20alias.c (init_alias_analysis): When simplifying the reg_base_value array, ↵Jeffrey A Law1-1/+1
simplify entries for hard registers too. * alias.c (init_alias_analysis): When simplifying the reg_base_value array, simplify entries for hard registers too. From jfc. Fixes c-torture failure on the PA. From-SVN: r14869
1997-08-11* Integrate alias analysis changes from jfc@mit.eduJeffrey A Law1-0/+1015
* Makefile.in (OBJS): Add alias.o (alias.o): Add dependencies. * alias.c: New file. * sched.c: Remove alias analysis code. It lives in alias.c now. (reg_last_uses_size): Declare. (sched_analyze_2): Add new arguments to true_dependence. (sched_analyze_insn): Use reg_last_uses_size instead of max_reg. (schedule_block): Initialize reg_last_uses_size. (schedule_insns): Always call init_alias_analysis. * calls.c (expand_call): Note calls to malloc, calloc, and realloc; mark return value from such functions as a pointer and keep track of them for alias analysis. If a return value from a function is a pointer, mark it as such. * combine.c (distribute_notes): Handle REG_NOALIAS. * cse.c (struct write_data): Delete. No longer needed. (invalidate): Don't call set_nonvarying_address_components anymore. Use true_dependence to decide if an entry should be removed from the hash table. (invalidate_memory): Remove WRITES argument, simplify appropriately. Fix all callers. (note_mem_written): Similarly for WRITE_PTR argument. (invalidate_from_clobbers): Similarly for W argument. (invalidate_for_call): Remove memory elements from the hash table. (refers_to_mem_p, cse_rtx_addr_varies_p): Deleted. (cse_rtx_varies_p): New function. Derived from old cse_rtx_addr_varies_p. (cse_insn): Remove WRITES_MEMORY and INIT variables and all references. Don't call note_mem_written anymore. Stack pushes invalidate the stack pointer if PUSH_ROUNDING is defined. No longer need to call cse_rtx_addr_varies_p to decide if a MEM should be invalidated. (skipped_writes_memory): Remove variable. (invalidate_skipped_set): Simplify and wewrite to use invalidate_memory. (invalidate_skipped_block): Simplify for new alias analysis code. (cse_set_around_loop): Likewise. (cse_main): Call init_alias_analysis. * flags.h (flag_alias_check, flag_argument_noalias): Declare. * toplev.c (flag_alias_check, flag_argument_noalias): Define. (f_options): Add new alias checking arguments. (main): Set flag_alias_check when optimizing. * local_alloc (validate_equiv_mem_from_store): Add new arguments to true_dependence. (memref_referenced_p): Likewise. * loop.c (NUM_STORES): Increase to 30. (prescan_loop): Only non-constant calls set unknown_address_altered. (invariant_p): Add new arguments to true_dependence. (record_giv): Initialize unrolled and shared fields. (emit_iv_add_mult): Call record_base_value as needed. * loop.h (struct induction): Add unrolled and shared fields. * unroll.c (unroll_loop): Call record_base_value as needed. (copy_loop_body): Likewise. (final_biv_value): Likewise. (final_giv_value): Likewise. (find_splittable_regs): Likewise. Only create one new pseudo if we have multiple address GIVs that were combined with the same dst_reg GIV. Note when a new register is created due to unrolling. * rtl.c (reg_note_name): Add REG_NOALIAS. * rtl.h (enum reg_note): Similarly. (rtx_varies_p, may_trap_p, side_effects_p): Declare. (volatile_refs_p, volatile_insn_p, remove_note): Likewise. (note_stores, refers_to_regno_p, reg_overlap_mentioned_p): Likewise. (true_dependence, read_dependence, anti_dependence): Likewise. (output_dependence, init_alias_analysis, end_alias_analysis): Likewise. (mark_user_reg, mark_reg_pointer): Likewise. jfc's alias analysis code. From-SVN: r14768