PR rtl-optimization/42575
* dce.c (word_dce_process_block): Renamed from byte_dce_process_block.
Argument AU removed. All callers changed. Ignore artificial refs.
Use return value of df_word_lr_simulate_defs to decide whether an insn
is necessary.
(fast_dce): Rename arg to WORD_LEVEL.
(run_word_dce): Renamed from rest_of_handle_fast_byte_dce. No longer
static.
(pass_fast_rtl_byte_dce): Delete.
* dce.h (run_word_dce): Declare.
* df-core.c (df_print_word_regset): Renamed from df_print_byteregset.
All callers changed. Simplify code to only deal with two-word regs.
* df.h (DF_WORD_LR): Renamed from DF_BYTE_LR.
(DF_WORD_LR_BB_INFO): Renamed from DF_BYTE_LR_BB_INFO.
(DF_WORD_LR_IN): Renamed from DF_BYTE_LR_IN.
(DF_WORD_LR_OUT): Renamed from DF_BYTE_LR_OUT.
(struct df_word_lr_bb_info): Renamed from df_byte_lr_bb_info.
(df_word_lr_mark_ref): Declare.
(df_word_lr_add_problem, df_word_lr_mark_ref, df_word_lr_simulate_defs,
df_word_lr_simulate_uses): Declare or rename from byte variants.
(df_byte_lr_simulate_artificial_refs_at_top,
df_byte_lr_simulate_artificial_refs_at_end, df_byte_lr_get_regno_start,
df_byte_lr_get_regno_len, df_compute_accessed_bytes): Delete
declarations.
(df_word_lr_get_bb_info): Rename from df_byte_lr_get_bb_info.
(enum df_mm): Delete.
* df-byte-scan.c: Delete file.
* df-problems.c (df_word_lr_problem_data): Renamed from
df_byte_lr_problem_data, all members deleted except for
WORD_LR_BITMAPS, which is renamed from BYTE_LR_BITMAPS. Uses changed.
(df_word_lr_expand_bitmap, df_byte_lr_simulate_artificial_refs_at_top,
df_byte_lr_simulate_artificial_refs_at_end, df_byte_lr_get_regno_start,
df_byte_lr_get_regno_len, df_byte_lr_check_regs,
df_byte_lr_confluence_0): Delete functions.
(df_word_lr_free_bb_info): Renamed from df_byte_lr_free_bb_info; all
callers changed.
(df_word_lr_alloc): Renamed from df_byte_lr_alloc; all callers changed.
Don't initialize members that were deleted, don't try to discover data
about registers. Ignore hard regs.
(df_word_lr_reset): Renamed from df_byte_lr_reset; all callers changed.
(df_word_lr_mark_ref): New function.
(df_word_lr_bb_local_compute): Renamed from
df_byte_bb_lr_local_compute; all callers changed. Use
df_word_lr_mark_ref. Assert that artificial refs don't include
pseudos. Ignore hard registers.
(df_word_lr_local_compute): Renamed from df_byte_lr_local_compute.
Assert that exit block uses don't contain pseudos.
(df_word_lr_init): Renamed from df_byte_lr_init; all callers changed.
(df_word_lr_confluence_n): Renamed from df_byte_lr_confluence_n; all
callers changed. Ignore hard regs.
(df_word_lr_transfer_function): Renamed from
df_byte_lr_transfer_function; all callers changed.
(df_word_lr_free): Renamed from df_byte_lr_free; all callers changed.
(df_word_lr_top_dump): Renamed from df_byte_lr_top_dump; all callers
changed.
(df_word_lr_bottom_dump): Renamed from df_byte_lr_bottom_dump; all
callers changed.
(problem_WORD_LR): Renamed from problem_BYTE_LR; uses changed;
confluence operator 0 set to NULL.
(df_word_lr_add_problem): Renamed from df_byte_lr_add_problem; all
callers changed.
(df_word_lr_simulate_defs): Renamed from df_byte_lr_simulate_defs.
Return bool, true if bitmap changed or insn otherwise necessary.
All callers changed. Simplify using df_word_lr_mark_ref.
(df_word_lr_simulate_uses): Renamed from df_byte_lr_simulate_uses;
all callers changed. Simplify using df_word_lr_mark_ref.
* lower-subreg.c: Include "dce.h"
(decompose_multiword_subregs): Call run_word_dce if df available.
* Makefile.in (lower-subreg.o): Adjust dependencies.
(df-byte-scan.o): Delete.
* timevar.def (TV_DF_WORD_LR): Renamed from TV_DF_BYTE_LR.
From-SVN: r162678
PR rtl-optimization/33644
* cfgcleanup.c: Do not include dce.h.
* cfgrtl.c (delete_insn_chain_and_edges): Resurrect.
* combine.c (distribute_notes): Delete REG_LIBCALL_ID case.
* dce.c (something_changed): Delete.
(libcall_dead_p): New predicate.
(delete_unmarked_insns): Use it to delete dead libcalls.
Deal with REG_LIBCALL and REG_RETVAL notes.
(prescan_libcall_for_dce): New function.
(prescan_insns_for_dce): Use it to deal with libcalls.
(mark_reg_dependencies): Do nothing special for libcalls.
(dce_process_block): Likewise.
(fast_dce): Delete unused local variable.
(run_fast_dce): Do not return a value.
* dce.h (struct df): Delete.
(run_fast_dce): Adjust prototype.
* optabs.c (libcall_id): Delete.
(maybe_encapsulate_block): Do not emit REG_LIBCALL_ID notes.
(emit_no_conflict_block): Do not look for REG_LIBCALL_ID notes.
* reload1.c (reload): Delete REG_LIBCALL_ID case.
* rtl.h (delete_insn_chain_and_edges): Resurrect prototype.
* see.c (see_update_relevancy): Look for REG_LIBCALL and REG_RETVAL
notes instead of REG_LIBCALL_ID notes.
* reg-notes.def (LIBCALL_ID): Delete.
* Makefile.in (see.o): Add dce.h dependency.
(cfgcleanup.o): Remove dce.h dependency.
From-SVN: r129556
