diff options
Diffstat (limited to 'gcc/ChangeLog')
| -rw-r--r-- | gcc/ChangeLog | 68 |
1 files changed, 67 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index b23e8050002..cdf71eb59d8 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,6 +1,72 @@ Mon Aug 11 10:04:49 1997 Jeffrey A Law (law@cygnus.com) - * Integrate reload bugfix from Wilson which enables the PA port + * Integrate alias analysis changes from jfc@mit.edu + * 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. + + + * Integrate reload bugfix from Wilon which enables the PA port to bootstrap again. * reload1.c (reload): Sum needs for both OPADDR_ADDR and and OPERAND_ADDRESS when computing how many registers an insn needs. |