* doc/rtl.texi (simple_return): Document.
(parallel, PATTERN): Here too.
* doc/md.texi (return): Mention it's allowed to expand to simple_return
in some cases.
(simple_return): Document standard pattern.
* gengenrtl.c (special_rtx): SIMPLE_RETURN is special.
* final.c (final_scan_insn): Use ANY_RETURN_P on body.
* reorg.c (function_return_label, function_simple_return_label):
New static variables, replacing...
(end_of_function_label): ... this.
(simplejump_or_return_p): New static function.
(optimize_skip, steal_delay_list_from_fallthrough,
fill_slots_from_thread): Use it.
(relax_delay_slots): Likewise. Use ANY_RETURN_P on body.
(rare_destination, follow_jumps): Use ANY_RETURN_P on body.
(find_end_label): Take a new arg which is one of the two return
rtxs. Depending on which, set either function_return_label or
function_simple_return_label. All callers changed.
(make_return_insns): Make both kinds.
(dbr_schedule): Adjust for two kinds of end labels.
* function.c (emit_return_into_block): Set JUMP_LABEL properly.
* genemit.c (gen_exp): Handle SIMPLE_RETURN.
(gen_expand, gen_split): Use ANY_RETURN_P.
* df-scan.c (df_uses_record): Handle SIMPLE_RETURN.
* rtl.def (SIMPLE_RETURN): New code.
* ifcvt.c (find_if_case_1): Be more careful about
redirecting jumps to the EXIT_BLOCK.
* jump.c (condjump_p, condjump_in_parallel_p, any_condjump_p,
returnjump_p_1): Handle SIMPLE_RETURNs.
* print-rtl.c (print_rtx): Likewise.
* rtl.c (copy_rtx): Likewise.
* bt-load.c (compute_defs_uses_and_gen): Use ANY_RETURN_P.
* combine.c (simplify_set): Likewise.
* resource.c (find_dead_or_set_registers, mark_set_resources):
Likewise.
* emit-rtl.c (verify_rtx_sharing, classify_insn, copy_insn_1,
copy_rtx_if_shared_1, mark_used_flags): Handle SIMPLE_RETURNs.
(init_emit_regs): Initialize simple_return_rtx.
* cfglayout.c (fixup_reorder_chain): Pass a JUMP_LABEL to
force_nonfallthru_and_redirect.
* rtl.h (ANY_RETURN_P): Allow SIMPLE_RETURN.
(GR_SIMPLE_RETURN): New enum value.
(simple_return_rtx): New macro.
* basic-block.h (force_nonfallthru_and_redirect): Adjust
declaration.
* cfgrtl.c (force_nonfallthru_and_redirect): Take a new jump_label
argument. All callers changed. Be careful about what kinds of
returnjumps to generate.
* config/i386/3i86.c (ix86_pad_returns, ix86_count_insn_bb,
ix86_pad_short_function): Likewise.
* config/arm/arm.c (arm_final_prescan_insn): Handle both kinds
of return.
* config/mips/mips.md (any_return): New code_iterator.
(optab): Add cases for return and simple_return.
(return): Expand to a simple_return.
(simple_return): New pattern.
(*<optab>, *<optab>_internal for any_return): New patterns.
(return_internal): Remove.
* config/mips/mips.c (mips_expand_epilogue): Make the last insn
a simple_return_internal.
From-SVN: r178135
* insn-notes.def (NOTE_INSN_CFA_RESTORE_STATE): Remove.
* final.c (final_scan_insn): Don't test for it.
(rest_of_clean_state): Likewise.
From-SVN: r176779
* tree-pass.h (pass_dwarf2_frame): Declare.
* passes.c (init_optimization_passes): Add it.
* dwarf2cfi.c (dwarf2out_frame_debug): Make static.
(create_cfi_notes): Rename from dwarf2out_frame_debug_after_prologue;
make static, do not call add_cfis_to_fde.
(dwarf2out_frame_debug_init, dwarf2cfi_function_init,
dwarf2out_frame_init): Merge into...
(execute_dwarf2_frame): ... here. New function.
(dwarf2out_do_frame, dwarf2out_do_cfi_asm): Make boolean. Change
saved_do_cfi_asm to a tri-state variable.
(gate_dwarf2_frame, pass_dwarf2_frame): New.
* dwarf2out.c (dwarf2out_begin_prologue): Only allocate the fde
if it has yet to be done. Don't call dwarf2cfi_function_init.
* dwarf2out.h, debug.h: Update decls.
* final.c (final_start_function): Don't call
dwarf2out_frame_debug_init or dwarf2out_frame_debug_after_prologue.
* lto-streamer-in.c (lto_init_eh): Don't call dwarf2out_frame_init.
* toplev.c (lang_dependent_init): Likewise.
From-SVN: r176019
This patch is essentially Bernd's 006-cfilabel patch, updated
for all the other changes to dwarf2out.
The patch reduces the difference between the cfi-asm and non-cfi-asm
code paths. We now emit the CFI notes in all cases. Later, after we're
done producing the CFI insns we need, another pass over the rtl adds
the necessary labels and set_loc/advance_loc CFIs. One consequence of
this is that def_cfa_1 can no longer use lookup_cfa, so it just compares
to an old_cfa variable instead.
The major change since Bernd's patch is that all the target-specific
changes are no longer necessary.
* dwarf2cfi.c (add_cfi): Remove.
(dwarf2out_cfi_label): Remove force argument. Only generate the
label name.
(add_fde_cfi): Simplify the different code paths.
(add_cie_cfi): New.
(old_cfa, old_cfa_remember): New.
(def_cfa_1, reg_save): Remove label, add for_cie parameter.
(last_reg_save_label): Remove.
(dwarf2out_args_size, dwarf2out_stack_adjust, queue_reg_save,
dwarf2out_frame_debug_def_cfa, dwarf2out_frame_debug_adjust_cfa,
dwarf2out_frame_debug_cfa_offset, dwarf2out_frame_debug_cfa_register,
dwarf2out_frame_debug_cfa_expression,
dwarf2out_frame_debug_cfa_restore,
dwarf2out_frame_debug_cfa_window_save,
dwarf2out_frame_debug_expr): Remove label parameter.
(cfi_label_required_p, add_cfis_to_fde): New.
(dwarf2out_frame_debug_after_prologue): New.
(dwarf2cfi_frame_init): Initialize old_cfa.
(dwarf2out_frame_debug_restore_state): Likewise.
* dwarf2out.c (dwarf2out_emit_cfi): Only do output for cfi_asm.
(dwarf2out_switch_text_section): Don't clear dw_fde_current_label here.
* final.c (final_start_function): Call
dwarf2out_frame_debug_after_prologue.
Co-Authored-By: Richard Henderson <rth@redhat.com>
From-SVN: r176017
This patch is essentially Bernd's 005-scanfirst patch, updated for
the introduction of the dwarf2cfi.c file.
We introduce NOTE_INSN_CFI and NOTE_INSN_CFI_LABEL to hold the dwarf2
info during the bulk of final. The actual construction of these notes
still happens during final, right at the very beginning of the pass,
via the dwarf2out_frame_debug_init hook.
* dwarf2cfi.c (cfi_insn): New.
(dwarf2out_cfi_label): Don't emit cfi label here.
(add_fde_cfi): Create a NOTE_INSN_CFI.
(dwarf2out_frame_debug): Setup cfi_insn.
(dwarf2out_frame_debug_init): Loop over insns creating CFI notes.
(dwarf2out_cfi_begin_epilogue): Make static.
(dwarf2out_frame_debug_restore_state): Make static.
* dwarf2out.c (output_cfi_directive): Make static.
(dwarf2out_emit_cfi): New.
* dwarf2out.h: Update.
* final.c (final): Remove CFI notes.
(final_scan_insn): Don't call dwarf2out_cfi_begin_epilogue,
dwarf2out_frame_debug_restore_state, dwarf2out_frame_debug.
Handle NOTE_INSN_CFI and NOTE_INSN_CFI_LABEL.
* insn-notes.def (NOTE_INSN_CFI): New.
(NOTE_INSN_CFI_LABEL): New.
* rtl.h (union rtunion_def): Add rt_cfi member.
(XCFI, XCCFI, NOTE_CFI, NOTE_LABEL_NUMBER): New.
Co-Authored-By: Richard Henderson <rth@redhat.com>
From-SVN: r176016
* reg-notes.def (REG_CFA_FLUSH_QUEUE): New.
* dwarf2out.c (dwarf2out_frame_debug): Handle it.
* final.c (final_scan_insn): Look for it, and invoke
dwarf2out_frame_debug before the insn if found.
From-SVN: r175729
* dwarf2out.h (dwarf2out_frame_debug_init): Declare.
* dwarf2out.c (dwarf2out_frame_debug_init): New function, broken
out of ...
(dwarf2out_frame_debug): ... here. Don't handle a NULL argument.
* final.c (final_start_function): Call the new function rather
than using a NULL argument for dwarf2out_frame_debug.
From-SVN: r171839
* final.c (final_scan_insn): Handle NOTE_INSN_CALL_ARG_LOCATION.
Call var_location debug hook even on CALL_INSNs.
(rest_of_clean_state): Don't print NOTE_INSN_CALL_ARG_LOCATION.
* rtl.def (ENTRY_VALUE): New.
* dwarf2out.c: Include cfglayout.h.
(dwarf_stack_op_name, size_of_loc_descr, output_loc_operands,
output_loc_operands_raw): Handle DW_OP_GNU_entry_value.
(struct call_arg_loc_node): New type.
(call_arg_locations, call_arg_loc_last, block_map, call_site_count,
tail_call_site_count): New variables.
(dwarf_tag_name): Handle DW_TAG_GNU_call_site and
DW_TAG_GNU_call_site_parameter.
(dwarf_attr_name): Handle DW_AT_GNU_call_site_value,
DW_AT_GNU_call_site_data_value, DW_AT_GNU_call_site_target,
DW_AT_GNU_call_site_target_clobbered, DW_AT_GNU_tail_call,
DW_AT_GNU_all_tail_call_sites, DW_AT_GNU_all_call_sites
and DW_AT_GNU_all_source_call_sites.
(mem_loc_descriptor): Handle ENTRY_VALUE.
(add_src_coords_attributes): Don't add enything if
DECL_SOURCE_LOCATION is UNKNOWN_LOCATION.
(dwarf2out_abstract_function): Save and clear call_arg_location,
call_site_count and tail_call_site_count around dwarf2out_decl call.
(gen_call_site_die): New function.
(gen_subprogram_die): Emit DW_TAG_GNU_call_site DIEs for call sites.
(gen_lexical_block_die, gen_inlined_subroutine_die): Update block_map.
(dwarf2out_function_decl): Clear call_arg_locations,
call_arg_loc_last, set call_site_count and tail_call_site_count
to -1 and free block_map.
(dwarf2out_var_location): Handle NOTE_INSN_CALL_ARG_LOCATION and
CALL_INSNs. Add NOTE_DURING_CALL_P var location notes even when not
followed by any real instructions.
(dwarf2out_begin_function): Set call_site_count and
tail_call_site_count to 0.
(resolve_addr): If DW_AT_abstract_origin of DW_TAG_GNU_call_site
is dw_val_class_addr, attempt to look it up again, for DECL_EXTERNAL
attempt to force a DIE for it and worst case remove the attribute.
(resolve_one_addr): For TREE_CONSTANT_POOL_ADDRESS_P SYMBOL_REFs
check TREE_ASM_WRITTEN of DECL_INITIAL of the decl instead of
the decl itself.
* var-tracking.c: Include tm_p.h.
(vt_stack_adjustments): For calls call note_register_arguments.
(argument_reg_set): New variable.
(add_stores): For MO_VAL_SET of non-tracked regs from argument_reg_set
ensure the VALUE is resolved.
(call_arguments): New variable.
(prepare_call_arguments): New function.
(add_with_sets): For MO_CALL set u.loc from call_arguments and clear it.
(struct expand_loc_callback_data): Add ignore_cur_loc field.
(vt_expand_loc_callback): If ignore_cur_loc, don't look at cur_loc and
always use the best expression.
(vt_expand_loc): Add ignore_cur_loc argument.
(vt_expand_loc_dummy): Clear ignore_cur_loc field.
(emit_note_insn_var_location): Adjust vt_expand_loc callers.
(emit_notes_in_bb) <case MO_CALL>: Add NOTE_INSN_CALL_ARG_LOCATION
note for all calls.
(vt_add_function_parameter): Use cselib_lookup_from_insn.
If dv is a VALUE, enter into hash table also ENTRY_VALUE for the
argument. Don't call cselib_preserve_only_values and
cselib_reset_table.
(note_register_arguments): New function.
(vt_initialize): Compute argument_reg_set. Call
vt_add_function_parameters before processing basic blocks instead of
afterwards. For calls call prepare_call_arguments before calling
cselib_process_insn.
* print-rtl.c (print_rtx): Handle NOTE_INSN_CALL_ARG_LOCATION.
* Makefile.in (dwarf2out.o): Depend on $(CFGLAYOUT_H).
(var-tracking.o): Depend on $(TM_P_H).
* cfglayout.h (insn_scope): New prototype.
* gengtype.c (adjust_field_rtx_def): Handle NOTE_INSN_CALL_ARG_LOCATION.
* cfglayout.c (insn_scope): No longer static.
* insn-notes.def (CALL_ARG_LOCATION): New.
* calls.c (expand_call, emit_library_call_value_1): Put USEs for
MEM arguments into CALL_INSN_FUNCTION_USAGE unconditionally.
* integrate.c (set_block_origin_self, set_block_abstract_flags): Do
nothing for DECL_EXTERNAL BLOCK_VARS.
cp/
* cp-objcp-common.c (cp_function_decl_explicit_p): Don't crash if
DECL_LANG_SPECIFIC is NULL.
include/
* dwarf2.h (DW_TAG_GNU_call_site, DW_TAG_GNU_call_site_parameter,
DW_AT_GNU_call_site_value, DW_AT_GNU_call_site_data_value,
DW_AT_GNU_call_site_target, DW_AT_GNU_call_site_target_clobbered,
DW_AT_GNU_tail_call, DW_AT_GNU_all_tail_call_sites,
DW_AT_GNU_all_call_sites,, DW_AT_GNU_all_source_call_sites,
DW_OP_GNU_entry_value): New.
From-SVN: r171033
* lto-symtab.c (lto_symtab_entry_def): Add guessed field.
(lto_symtab_resolve_symbols): Set it.
(lto_symtab_merge_decls_1): Do not compute used_from_object_file;
store resolution field in cgraph/varpool.
* cgraph.c (cgraph_same_body_alias, cgraph_add_thunk): Return node.
(cgraph_get_node_or_alias, cgraph_get_node_or_alias): Constify.
(cgraph_dump_node): Drop used_from_object_file.
(cgraph_clone_node, cgraph_create_virtual_clone): Likewise.
(cgraph_function_body_availability): Use decl_replaceable_p.
(cgraph_make_node_local): Set resolution to LDPR_PREVAILING_DEF_IRONLY.
(cgraph_can_remove_if_no_direct_calls_and_refs): Use
cgraph_used_from_object_file_p.
(cgraph_will_be_removed_from_program_if_no_direct_calls): Use
cgraph_used_from_object_file_p.
(resolution_used_from_other_file_p): New functoin.
(cgraph_used_from_object_file_p): New predicate.
* cgraph.h: Include plugin-api.h
(struct cgraph_local_info): Remove used_from_object_file.
(struct cgraph_node): Add resolution field.
(struct varpool_node): Likewise; remove used_from_object_file;
reove const_value_known.
(cgraph_get_node, cgraph_get_node_or_alias, cgraph_node,
cgraph_same_body_alias, cgraph_add_thunk): Update prototypes.
(resolution_used_from_other_file_p, cgraph_used_from_object_file_p,
varpool_used_from_object_file_p): Declare.
(varpool_get_node, varpool_extra_name_alias): Update prototype.
* tree.h (DECL_REPLACEABLE_P): Remove.
(decl_replaceable_p, decl_binds_to_current_def_p): Declare.
* final.c (rest_of_clean_state): Use decl_binds_to_current_def_p.
* lto-cgraph.c (lto_output_node, lto_output_varpool_node,
input_overwrite_node, input_node, input_varpool_node): Stream
resolution.
* expr.c (expand_expr_real_1): Use const_value_known_p
* ipa.c (ipa_discover_readonly_nonaddressable_var): Do not set
const_value_known.
(cgraph_externally_visible_p): Use cgraph_used_from_object_file_p.
(function_and_variable_visibility): Set resolution for local vars
and functions.
use varpool_used_from_object_file_p.
* varasm.c (resolution_to_local_definition_p, resolution_local_p): New
static functions.
(default_binds_local_p_1): Use resolutoin info.
(decl_binds_to_current_def_p, decl_replaceable_p): New functions.
* varpool.c (varpool_get_node): Constify.
(const_value_known_p): Do not use vnode->const_value_known;
use decl_replaceable_p.
(varpool_finalize_decl): Do not set const_value_known.
(cgraph_variable_initializer_availability): Use decl_replaceable_p
(varpool_extra_name_alias): Return new node.
(varpool_used_from_object_file_p): New function.
* decl.c (finish_function): Use decl_replaceable_p
* method.c (make_alias_for_thunk): Update call of cgraph_same_body_alias.
* lto.c (lto_promote_cross_file_statics): Use const_value_known_p.
From-SVN: r164610
* final.c (final_scan_insn): Call CC_STATUS_INIT unconditionally.
* config/arm/arm.c (thumb1_code): New variable.
(arm_override_options): Set it.
(thumb1_final_prescan_insn): Keep track of condition code status.
(arm_adjust_cost): For Thumb, try to keep cc-setting insns next to
jumps that depend on them.
* config/arm/arm.h (thumb1_code): Declare variable.
(struct machine_function): Guard with #ifndef GENERATOR_FILE. Add
members thumb1_cc_insn, thumb1_cc_op0, thumb1_cc_op1 and
thumb1_cc_mode.
(CC_STATUS_INIT): New macro.
* config/arm/constraints.md (Pd): New constraint.
* config/arm/predicates.md (noov_comparison_operator): New predicate.
* config/arm/arm.md (is_thumb1): New define_attr.
(conds): Set default to "clob" when generating Thumb1 code.
(thumb1_bicsi3): Renamed from bicsi3. All uses changed. Condition
code are set. Use two-operand assembly syntax.
(thumb1_subsi3_insn): Condition codes are set. Now a properly named
pattern.
(thumb1_andsi3_insn, thumb1_iorsi3_insn, thumb1_xorsi3_insn): Condition
codes are set. Use two-operand assembly syntax.
(zero_extendhisi splitter): Remove constraints.
(thumb1_movsi_insn, thumb1_movhi_insn, thumb1_movqi_insn, thumb1_movhf,
thumb1_movsf_insn): Set conds attribute as appropriate.
(cbranchsi4_insn): Use condition code status from struct
machine_function to determine whether the comparison can be eliminated.
Discourage the alternative using high registers.
(movsi_cbranchsi4, andsi3_cbranch, orrsi3_cbranch_scratch,
orrsi3_cbranch, xorsi3_cbranch_scratch, xorsi3_cbranch,
bicsi3_cbranch_scratch, bicsi3_cbranch, subsi3_cbranch_scratch,
subsi3_cbranch): Delete.
(movsi_cbranchsi4 peepholes): Rewrite to generate a sequence of
one subtract and one cbranch insn.
From-SVN: r162813
* final.c (rest_of_clean_state): Use %m in errors instead of
strerror (errno).
* gengtype.c (read_input_list, close_output_files): Use xstrerror
instead of strerror.
* toplev.c (process_options): Use %m in errors instead of strerror
(errno).
* tree-dump.c (dump_begin): Use %m in errors instead of strerror
(errno).
fortran:
* cpp.c (gfc_cpp_init_0): Use xstrerror instead of strerror.
* module.c (write_char, gfc_dump_module, gfc_use_module): Use
xstrerror instead of strerror.
lto:
* lto-coff.c (coff_errmsg): Remove.
(lto_coff_begin_section_with_type, lto_obj_append_data): Use %m in
errors instead of coff_errmsg (-1).
* lto-macho.c (mach_o_errmsg): Remove.
(lto_obj_begin_section, lto_obj_append_data): Use %m in errors
instead of mach_o_errmsg (-1).
* lto.c (read_cgraph_and_symbols): Use %m in errors instead of
xstrerror (errno).
From-SVN: r159969
* final.c (output_addr_const): Do not call mark_decl_referenced.
* cgraphunit.c (process_function_and_variable_attributes): Use
mark_needed_node dirrectly.
(assemble_thunk): Do not call mark_decl_referenced.
From-SVN: r159370
PR debug/43516
* flags.h (final_insns_dump_p): New extern.
* final.c (final_insns_dump_p): New variable.
(rest_of_clean_state): Set it before -fdump-final-insns=
dumping, clear afterwards.
* print-rtl.c (print_rtx): If final_insns_dump_p don't dump
MEM_ALIAS_SET on MEMs.
From-SVN: r157753
2009-12-01 Richard Guenther <rguenther@suse.de>
* final.c (rest_of_clean_state): If -fcompare-debug is
given dump final insns without UIDs.
* tree-ssa-live.c (remove_unused_scope_block_p): Remove
after_inlining checks.
From-SVN: r154869
