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author | Richard Sandiford <richard.sandiford@arm.com> | 2019-10-01 08:55:50 +0000 |
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committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2019-10-01 08:55:50 +0000 |
commit | 17d184e5c4896264c27c27d125a6c1f8462d9d37 (patch) | |
tree | 1dca9c9172cc83f10975cf111475bbf1c2327df6 /gcc/rtl.h | |
parent | bb6ce448fc194cca8e51aea274a1b2408c7746c3 (diff) | |
download | gcc-17d184e5c4896264c27c27d125a6c1f8462d9d37.zip gcc-17d184e5c4896264c27c27d125a6c1f8462d9d37.tar.gz gcc-17d184e5c4896264c27c27d125a6c1f8462d9d37.tar.bz2 |
Remove clobber_high
The AArch64 SVE tlsdesc patterns were the main motivating reason
for clobber_high. It's no longer needed now that the patterns use
calls instead.
At the time, one of the possible future uses for clobber_high was for
asm statements. However, the current code wouldn't handle that case
without modification, so I think we might as well remove it for now.
We can always reapply it in future if it turns out to be useful again.
2019-10-01 Richard Sandiford <richard.sandiford@arm.com>
gcc/
* rtl.def (CLOBBER_HIGH): Delete.
* doc/rtl.texi (clobber_high): Remove documentation.
* rtl.h (SET_DEST): Remove CLOBBER_HIGH from the list of codes.
(reg_is_clobbered_by_clobber_high): Delete.
(gen_hard_reg_clobber_high): Likewise.
* alias.c (record_set): Remove CLOBBER_HIGH handling.
* cfgexpand.c (expand_gimple_stmt): Likewise.
* combine-stack-adj.c (single_set_for_csa): Likewise.
* combine.c (find_single_use_1, set_nonzero_bits_and_sign_copies)
(can_combine_p, is_parallel_of_n_reg_sets, try_combine)
(record_dead_and_set_regs_1, reg_dead_at_p_1): Likewise.
* cse.c (invalidate_reg): Remove clobber_high parameter.
(invalidate): Update call accordingly.
(canonicalize_insn): Remove CLOBBER_HIGH handling.
(invalidate_from_clobbers, invalidate_from_sets_and_clobbers)
(count_reg_usage, insn_live_p): Likewise.
* cselib.h (cselib_invalidate_rtx): Remove sett argument.
* cselib.c (cselib_invalidate_regno, cselib_invalidate_rtx): Likewise.
(cselib_invalidate_rtx_note_stores): Update call accordingly.
(cselib_expand_value_rtx_1): Remove CLOBBER_HIGH handling.
(cselib_invalidate_regno, cselib_process_insn): Likewise.
* dce.c (deletable_insn_p, mark_nonreg_stores_1): Likewise.
(mark_nonreg_stores_2): Likewise.
* df-scan.c (df_find_hard_reg_defs, df_uses_record): Likewise.
(df_get_call_refs): Likewise.
* dwarf2out.c (mem_loc_descriptor): Likewise.
* emit-rtl.c (verify_rtx_sharing): Likewise.
(copy_insn_1, copy_rtx_if_shared_1): Likewise.
(hard_reg_clobbers_high, gen_hard_reg_clobber_high): Delete.
* genconfig.c (walk_insn_part): Remove CLOBBER_HIGH handling.
* genemit.c (gen_exp, gen_insn): Likewise.
* genrecog.c (validate_pattern, remove_clobbers): Likewise.
* haifa-sched.c (haifa_classify_rtx): Likewise.
* ira-build.c (create_insn_allocnos): Likewise.
* ira-costs.c (scan_one_insn): Likewise.
* ira.c (equiv_init_movable_p, memref_referenced_p): Likewise.
(rtx_moveable_p, interesting_dest_for_shprep): Likewise.
* jump.c (mark_jump_label_1): Likewise.
* lra-int.h (lra_insn_reg::clobber_high): Delete.
* lra-eliminations.c (lra_eliminate_regs_1): Remove CLOBBER_HIGH
handling.
(mark_not_eliminable): Likewise.
* lra-lives.c (process_bb_lives): Likewise.
* lra.c (new_insn_reg): Remove clobber_high parameter.
(collect_non_operand_hard_regs): Likewise. Update call to new
insn_reg. Remove CLOBBER_HIGH handling.
(lra_set_insn_recog_data): Remove CLOBBER_HIGH handling. Update call
to collect_non_operand_hard_regs.
(add_regs_to_insn_regno_info): Remove CLOBBER_HIGH handling.
Update call to new_insn_reg.
(lra_update_insn_regno_info): Remove CLOBBER_HIGH handling.
* postreload.c (reload_cse_simplify, reload_combine_note_use)
(move2add_note_store): Likewise.
* print-rtl.c (print_pattern): Likewise.
* recog.c (store_data_bypass_p_1, store_data_bypass_p): Likewise.
(if_test_bypass_p): Likewise.
* regcprop.c (kill_clobbered_value, kill_set_value): Likewise.
* reginfo.c (reg_scan_mark_refs): Likewise.
* reload1.c (maybe_fix_stack_asms, eliminate_regs_1): Likewise.
(elimination_effects, mark_not_eliminable, scan_paradoxical_subregs)
(forget_old_reloads_1): Likewise.
* reorg.c (find_end_label, try_merge_delay_insns, redundant_insn)
(own_thread_p, fill_simple_delay_slots, fill_slots_from_thread)
(dbr_schedule): Likewise.
* resource.c (update_live_status, mark_referenced_resources)
(mark_set_resources): Likewise.
* rtl.c (copy_rtx): Likewise.
* rtlanal.c (reg_referenced_p, set_of_1, single_set_2, noop_move_p)
(note_pattern_stores): Likewise.
(reg_is_clobbered_by_clobber_high): Delete.
* sched-deps.c (sched_analyze_reg, sched_analyze_insn): Remove
CLOBBER_HIGH handling.
From-SVN: r276393
Diffstat (limited to 'gcc/rtl.h')
-rw-r--r-- | gcc/rtl.h | 13 |
1 files changed, 1 insertions, 12 deletions
@@ -2679,7 +2679,7 @@ do { \ /* For a SET rtx, SET_DEST is the place that is set and SET_SRC is the value it is set to. */ -#define SET_DEST(RTX) XC3EXP (RTX, 0, SET, CLOBBER, CLOBBER_HIGH) +#define SET_DEST(RTX) XC2EXP (RTX, 0, SET, CLOBBER) #define SET_SRC(RTX) XCEXP (RTX, 1, SET) #define SET_IS_RETURN_P(RTX) \ (RTL_FLAG_CHECK1 ("SET_IS_RETURN_P", (RTX), SET)->jump) @@ -3524,16 +3524,6 @@ extern rtx tablejump_casesi_pattern (const rtx_insn *insn); extern int computed_jump_p (const rtx_insn *); extern bool tls_referenced_p (const_rtx); extern bool contains_mem_rtx_p (rtx x); -extern bool reg_is_clobbered_by_clobber_high (unsigned int, machine_mode, - const_rtx); - -/* Convenient wrapper for reg_is_clobbered_by_clobber_high. */ -inline bool -reg_is_clobbered_by_clobber_high (const_rtx x, const_rtx clobber_high_op) -{ - return reg_is_clobbered_by_clobber_high (REGNO (x), GET_MODE (x), - clobber_high_op); -} /* Overload for refers_to_regno_p for checking a single register. */ inline bool @@ -4330,7 +4320,6 @@ extern void vt_equate_reg_base_value (const_rtx, const_rtx); extern bool memory_modified_in_insn_p (const_rtx, const_rtx); extern bool may_be_sp_based_p (rtx); extern rtx gen_hard_reg_clobber (machine_mode, unsigned int); -extern rtx gen_hard_reg_clobber_high (machine_mode, unsigned int); extern rtx get_reg_known_value (unsigned int); extern bool get_reg_known_equiv_p (unsigned int); extern rtx get_reg_base_value (unsigned int); |