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PR bootstrap/50010
* dwarf2cfi.c (add_cfis_to_fde): Ignore non-active insns in between
NOTE_INSN_CFI notes, with the exception of
NOTE_INSN_SWITCH_TEXT_SECTIONS.
From-SVN: r178795
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* rtl.h (INSN_ANNULLED_BRANCH_P): Only allow JUMP_INSN.
* dwarf2cfi.c (scan_trace): Test JUMP_P before INSN_ANNULLED_BRANCH_P.
* resource.c (next_insn_no_annul): Likewise.
(mark_set_resources): Likewise.
* reorg.c (delete_from_delay_slot): Likewise.
(dbr_schedule, redundant_insn, try_merge_delay_insns): Likewise.
(get_branch_condition): Test pc_rtx and LABEL_REF before dereferencing.
From-SVN: r177944
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PR rtl-opt/49977
* dwarf2cfi.c (scan_insn_after): Split out of ...
(scan_trace): ... here. Correctly place notes wrt sequences.
From-SVN: r177466
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PR target/49864
* reg-notes.def (REG_ARGS_SIZE): New.
* calls.c (emit_call_1): Emit REG_ARGS_SIZE for call_pop.
(expand_call): Add REG_ARGS_SIZE to emit_stack_restore.
* cfgcleanup.c (old_insns_match_p): Don't allow cross-jumping to
different stack levels.
* combine-stack-adj.c (adjust_frame_related_expr): Remove.
(maybe_move_args_size_note): New.
(combine_stack_adjustments_for_block): Use it.
* combine.c (distribute_notes): Place REG_ARGS_SIZE.
* dwarf2cfi.c (dw_cfi_row_struct): Remove args_size member.
(dw_trace_info): Add beg_true_args_size, end_true_args_size,
beg_delay_args_size, end_delay_args_size, eh_head, args_size_undefined.
(cur_cfa): New.
(queued_args_size): Remove.
(add_cfi_args_size): Assert size is non-negative.
(stack_adjust_offset, dwarf2out_args_size): Remove.
(dwarf2out_stack_adjust, dwarf2out_notice_stack_adjust): Remove.
(notice_args_size, notice_eh_throw): New.
(dwarf2out_frame_debug_def_cfa): Use cur_cfa.
(dwarf2out_frame_debug_adjust_cfa): Likewise.
(dwarf2out_frame_debug_cfa_offset): Likewise.
(dwarf2out_frame_debug_expr): Likewise. Don't stack_adjust_offset.
(dwarf2out_frame_debug): Don't handle non-frame-related-p insns.
(change_cfi_row): Don't emit args_size.
(maybe_record_trace_start_abnormal): Split out from ...
(maybe_record_trace_start): Here. Set args_size_undefined.
(create_trace_edges): Update to match.
(scan_trace): Handle REG_ARGS_SIZE.
(connect_traces): Connect args_size between EH insns.
* emit-rtl.c (try_split): Handle REG_ARGS_SIZE.
* explow.c (suppress_reg_args_size): New.
(adjust_stack_1): Split out from ...
(adjust_stack): ... here.
(anti_adjust_stack): Use it.
(allocate_dynamic_stack_space): Suppress REG_ARGS_SIZE.
* expr.c (mem_autoinc_base): New.
(fixup_args_size_notes): New.
(emit_single_push_insn_1): Rename from emit_single_push_insn.
(emit_single_push_insn): New. Generate REG_ARGS_SIZE.
* recog.c (peep2_attempt): Handle REG_ARGS_SIZE.
* reload1.c (reload_as_needed): Likewise.
* rtl.h (fixup_args_size_notes): Declare.
From-SVN: r177218
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Minimal bug fix is to unset RTX_FRAME_RELATED_P on the PUSH
insn generated in h8300_swap_into_er6. But with a tiny bit
of effort we can generate real unwind info around the sequence.
From-SVN: r177209
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From-SVN: r176772
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From-SVN: r176771
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dwarf2cfi.c connect_traces)
PR debug/49831
* dwarf2cfi.c (connect_traces): Allow unvisited traces. Skip
them entirely.
Constant pools are emitted in such a way as to be indistinguishable
from regular instructions, and these constant pools are, naturally,
not reachable as code.
From-SVN: r176730
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PR debug/49825
* dwarf2cfi.c (dwarf2out_stack_adjust): Move A_O_A test earlier.
(dwarf2out_notice_stack_adjust): Use args_size from call_insn.
From-SVN: r176729
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in dwarf2cfi.c connect_traces)
PR debug/49827
* dwarf2cfi.c (create_trace_edges): Handle sequences properly.
From-SVN: r176728
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* dwarf2cfi.c (maybe_record_trace_start): Add abnormal parameter.
Zero args_size for abnormal edges. Adjust all callers.
From-SVN: r176727
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PR debug/49825
Test case gcc.c-torture/compile/pr49474.c, among others.
* dwarf2cfi.c (cfi_row_equal_p): Don't compare args_size.
From-SVN: r176726
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This kinda-sorta corresponds to Bernd's 007-dw2cfi patch. Certainly
the same concepts of splitting the instruction stream into extended
basic blocks is the same. This patch does a bit better job with the
documentation. Also, I'm a bit more explicit about matching things
up with the similar code from the regular CFG routines.
What's missing at this point is any attempt to use DW_CFA_remember_state.
I've deferred that for the moment because it's easy to test the state
change code across epilogues, whereas the shrink-wrapping code is not
in this tree and section switching is difficult to force.
* dwarf2cfi.c: Include basic-block.h.
(dw_label_info): Remove.
(trace_work_list, trace_index): New.
(remember_row, emit_cfa_remember): Remove.
(dw_trace_info_hash, dw_trace_info_eq): New.
(get_trace_index, get_trace_info): New.
(save_point_p): New.
(free_cfi_row): Remove.
(add_cfi): Do not emit DW_CFA_remember_state.
(cfa_row_equal_p): New.
(barrier_args_size): Remove.
(compute_barrier_args_size_1, compute_barrier_args_size): Remove.
(dwarf2out_notice_stack_adjust): Don't compute_barrier_args_size.
(maybe_record_trace_start, create_trace_edges, scan_trace): New.
(dwarf2out_cfi_begin_epilogue): Remove.
(dwarf2out_frame_debug_restore_state): Remove.
(connect_traces, create_pseudo_cfg): New.
(create_cfi_notes, execute_dwarf2_frame): Rewrite using traces.
* Makefile.in (dwarf2cfi.o): Update.
From-SVN: r176705
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This patch only introduces the structure definition and adjusts
the existing routines to use the new cur_trace global to access
the variables that were moved into the structure.
* dwarf2cfi.c (dw_trace_info): New.
(dw_label_info): New.
(cie_return_save): New.
(cur_trace): New.
(queued_args_size): Rename from args_size. Update all users.
(cfa_store, cfa_temp, regs_saved_in_regs): Remove.
(def_cfa_1): Use cur_trace instead of cfa_*.
(dwarf2out_stack_adjust, record_reg_saved_in_reg): Likewise.
(clobbers_queued_reg_save, reg_saved_in): Likewise.
(dwarf2out_frame_debug_expr): Likewise.
(create_cie_data): Split out from ...
(execute_dwarf2_frame): ... here. Initialize cur_trace.
From-SVN: r176704
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* dwarf2cfi.c (regs_saved_in_regs): Allocate from heap, not gc.
Update all users to match.
(execute_dwarf2_frame): Free reg_saved_in_data.
From-SVN: r176703
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Also, allocate it in the heap instead of garbage collected.
* dwarf2cfi.c (queued_reg_save): Reorder for packing. Don't GTY.
(queued_reg_saves): Don't GTY. Change to a VEC.
(queue_reg_save): Update to match.
(dwarf2out_flush_queued_reg_saves): Likewise.
(clobbers_queued_reg_save): Likewise.
(reg_saved_in): Likewise.
(execute_dwarf2_frame): Free queued_reg_saves.
From-SVN: r176702
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* dwarf2cfi.c (dw_cfi_row_ref): Remove. Update all users.
From-SVN: r176701
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Add a generic function to adjust cfi state from one row to another.
Use this to implement text section switching. This will also be
usable for arbitrary changes around a cfg for shrink-wrapping.
* dwarf2cfi.c (add_cfi_args_size): Split out from...
(dwarf2out_args_size): ... here.
(add_cfi_restore): Split out from ...
(dwarf2out_frame_debug_cfa_restore): ... here.
(def_cfa_0): Split out from ...
(def_cfa_1): ... here.
(cfi_oprnd_equal_p, cfi_equal_p): New.
(change_cfi_row): New.
(add_cfis_to_fde): Set fde->dw_fde_switch_cfi_index.
(create_cfi_notes): Use change_cfi_row at SWITCH_TEXT note.
(output_cfis): Remove.
* dwarf2out.c (output_fde): Simplify output_cfi loop.
(dwarf2out_switch_text_section): Don't call output_cfis.
(dw_val_equal_p, loc_descr_equal_p_1, loc_descr_equal_p): New.
* dwarf2out.h: Update decls.
(enum dw_val_class): Add dw_val_class_none.
From-SVN: r176700
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To be actually used by a subsequent patch.
* dwarf2cfi.c (update_row_reg_save): New.
(dwarf2out_frame_debug_cfa_expression): Use it.
(dwarf2out_frame_debug_cfa_restore): Likewise.
(reg_save): Likewise. Do not emit DW_CFA_same_value.
From-SVN: r176699
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Make it consistent with add_cfi_vec.
* dwarf2cfi.c (add_cfi_insn): Rename from cfi_insn. Update all users.
From-SVN: r176698
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Use it instead of old_cfa, old_args_size, and cfa_remember variables.
Remove the global cfa variable, as it was usually a duplicate of
old_cfa and otherwise confusing. Always make a local copy of the
cur_row->cfa variable before modification instead.
* dwarf2cfi.c (dw_cfi_row, dw_cfi_row_ref): New.
(cie_cfi_row): New.
(new_cfi_row, copy_cfi_row, free_cfi_row): New.
(cfa, old_cfa, cfa_remember, old_cfa_remember, old_args_size): Remove.
(cur_row, remember_row): New.
(def_cfa_1): Use cur_row instead of the old_* variables.
(dwarf2out_frame_debug_restore_state): Similarly.
(dwarf2out_args_size, dwarf2out_notice_stack_adjust): Likewise.
(dwarf2out_frame_debug_def_cfa): Use a local variable instead of cfa.
(dwarf2out_frame_debug_adjust_cfa): Likewise.
(dwarf2out_frame_debug_cfa_offset): Likewise.
(dwarf2out_frame_debug_expr): Likewise.
(execute_dwarf2_frame): Set up cur_row.
* dwarf2out.h (struct cfa_loc): Mark for GTY.
From-SVN: r176697
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PR target/49713
* dwarf2out.h (dwarf_frame_regnum): Remove.
* dwarf2out.c (based_loc_descr): Revert last change. Initialize regno
earlier from DWARF_FRAME_REGNUM. Never use dbx_reg_number.
* dwarf2cfi.c (dw_stack_pointer_regnum, dw_frame_pointer_regnum): New.
(execute_dwarf2_frame): Initialize them.
(DW_STACK_POINTER_REGNUM, DW_FRAME_POINTER_REGNUM): Remove; replace
users of the macros with the variables.
(expand_builtin_dwarf_sp_column): Revert last change.
(expand_builtin_init_dwarf_reg_sizes): Likewise. Compute the
result of DWARF_FRAME_REGNUM into a local variable.
From-SVN: r176212
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* dwarf2cfi.c (DW_STACK_POINTER_REGNUM): New.
(DW_FRAME_POINTER_REGNUM): New.
(expand_builtin_init_dwarf_reg_sizes): Use unsigned for rnum.
(def_cfa_1): Do not convert reg to DWARF_FRAME_REGNUM here.
(dwf_regno): New.
(dwarf2out_flush_queued_reg_saves, dwarf2out_frame_debug_def_cfa,
dwarf2out_frame_debug_adjust_cfa, dwarf2out_frame_debug_cfa_register,
dwarf2out_frame_debug_cfa_expression, dwarf2out_frame_debug_expr):
Use it.
* dwarf2out.c (based_loc_descr): Use dwarf_frame_regnum.
* dwarf2out.h (dwarf_frame_regnum): New.
(struct cfa_loc): Document the domain of the reg member.
From-SVN: r176178
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* defaults.h (DWARF2_ADDR_SIZE, DWARF_OFFSET_SIZE,
DWARF_TYPE_SIGNATURE_SIZE): Move from ...
* dwarf2out.c: ... here.
(output_all_cfis): Remove.
(dwarf2out_switch_text_section): Use output_cfis directly.
(size_of_locs): Export.
(output_loc_sequence, output_loc_sequence_raw): Export.
(div_data_align, need_data_align_sf_opcode, dwarf_cfi_name, output_cfi,
output_cfi_directive, dwarf2out_emit_cfi, output_cfis, output_cfa_loc,
output_cfa_loc_raw): Move to ...
* dwarfcfi.c: ... here.
* dwarf2out.h: Update decls.
From-SVN: r176107
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Move some definitions to defaults.h; some simply aren't needed
anymore in the respective dwarf2{cfi,out}.c files.
* defaults.h (DWARF_CIE_DATA_ALIGNMENT, DWARF_FRAME_RETURN_COLUMN,
DWARF_FRAME_REGNUM, DWARF2_FRAME_REG_OUT): Move from ...
* dwarf2cfi.c: ... here.
(PTR_SIZE, DWARF_OFFSET_SIZE, DWARF_INITIAL_LENGTH_SIZE): Remove.
(DWARF_ROUND, DWARF_CIE_ID): Remove.
* dwarf2out.c (INCOMING_RETURN_ADDR_RTX): Remove.
(DWARF2_FRAME_REG_OUT, DWARF_CIE_DATA_ALIGNMENT): Remove.
(DWARF_FRAME_RETURN_COLUMN, DWARF_FRAME_REGNUM): Remove.
From-SVN: r176102
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When we record a save of the return column in the CIE, remember
that while processing the FDE. This requires propagating the
handling of PC_RTX as a representative of the return column to
more locations.
MIPS had been handling this case by hand, and is no longer required.
* dwarf2cfi.c (cie_return_save): New.
(queue_reg_save): Use compare_reg_or_pc.
(dwarf2out_flush_queued_reg_saves): Handle pc_rtx as return column.
(dwarf2out_frame_debug_expr): Likewise.
(dwarf2out_frame_debug_cfa_register): Record saved reg for pc too.
(initial_return_save): Likewise.
(execute_dwarf2_frame): Save and restore initial return save from
the cie to the fde.
* config/mips/mips.c (mips_frame_set): Remove special case for
DWARF_FRAME_RETURN_COLUMN.
From-SVN: r176099
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There's no point calling lookup_cfa to re-create the CFA
we initialized just a few lines above.
* dwarf2cfi.c (lookup_cfa): Remove.
(execute_dwarf2_frame): Assert queues are empty on entry.
Setup initial cfa directly, not via lookup_cfa.
Don't clear args_size state here.
From-SVN: r176098
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* dwarf2cfi.c (add_cfi_vec): New.
(add_cfi): Rename from add_fde_cfi. Add the element to add_cfi_vec.
(def_cfa_1, reg_save): Remove for_cie argument. Update all callers.
(execute_dwarf2_frame): Set add_cfi_vec.
From-SVN: r176095
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PR debug/49686
* dwarf2cfi.c (dwarf2out_frame_debug): Don't set cfi_insn here...
(create_cfi_notes): ... do it here instead.
From-SVN: r176091
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There's little point at holding onto these saves indefinitely.
PR bootstrap/49680
* dwarf2cfi.c (create_cfi_notes): Flush queued saves at the
end of the prologue.
From-SVN: r176066
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PR bootstrap/49680
* dwarf2cfi.c (dwarf2out_frame_debug): Insert cfi notes after
any tablejump vector.
From-SVN: r176065
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* 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
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Prepare for allocating the FDE for the current function earlier
than dwarf2out_begin_prologue.
* dwarf2out.c (fde_table, fde_table_allocated, fde_table_in_use,
FDE_TABLE_INCREMENT): Replace with...
(fde_vec): ... this, a new vector.
(current_fde): Remove. Replace all users with cfun->fde.
(output_call_frame_info): Use FOR_EACH_VEC_ELT over fde_vec.
(size_of_aranges, dwarf2out_finish): Likewise.
(dwarf2out_alloc_current_fde): Break out from ...
(dwarf2out_begin_prologue): ... here.
(dwarf2out_frame_init): Remove.
* dwarf2cfi.c: Update all users of current_fde.
(dwarf2out_frame_init): Rename from dwarf2cfi_frame_init.
* dwarf2out.h: Update decls.
(dw_fde_node): Add fde_index member.
* function.h (struct function): Add fde member.
From-SVN: r176018
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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
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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
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Excepting changing some functions from static to extern, this
patch contains code motion only. The split is not very clean
at this point, but will be refined as CFI construction is turned
into its own proper pass.
* dwarf2cfi.c: New file.
* Makefile.in (OBJS): Add it.
(GTFILES): Add dwarf2cfi.c and dwarf2out.h.
* gengtype.c (open_base_files): Include dwarf2out.h.
* coretypes.h (enum var_init_status): Move from ...
* rtl.h: ... here.
* dwarf2out.c (saved_do_cfi_asm, dwarf2out_do_frame,
dwarf2out_do_cfi_asm, cie_cfi_vec, dwarf2out_cfi_label_num,
expand_builtin_dwarf_sp_column, init_return_column_size,
expand_builtin_init_dwarf_reg_sizes, new_cfi, add_cfi,
dwarf2out_cfi_label, emit_cfa_remember, any_cfis_emitted, add_fde_cfi,
lookup_cfa_1, lookup_cfa, cfa, cfa_store, cfa_remember, args_size,
old_args_size, cfa_equal_p, def_cfa_1, reg_save, initial_return_save,
stack_adjust_offset, barrier_args_size, compute_barrier_args_size_1,
compute_barrier_args_size, dwarf2out_args_size,
dwarf2out_stack_adjust, dwarf2out_notice_stack_adjust,
queued_reg_saves, reg_saved_in_data, regs_saved_in_regs,
compare_reg_or_pc, record_reg_saved_in_reg, last_reg_save_label,
queue_reg_save, dwarf2out_flush_queued_reg_saves,
clobbers_queued_reg_save, reg_saved_in, cfa_temp,
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,
dwarf2out_frame_debug, dwarf2out_frame_debug_init,
dwarf2out_cfi_begin_epilogue, dwarf2out_frame_debug_restore_state,
get_cfa_from_loc_descr): Move to dwarf2cfi.c.
(dw_cfi_ref, dw_fde_ref, dw_cfi_oprnd_ref, enum dw_cfi_oprnd_type,
dw_cfi_oprnd, dw_cfi_node, cfi_vec, dw_cfa_location, dw_fde_node,
dw_val_ref, dw_die_ref, const_dw_die_ref, dw_loc_descr_ref,
dw_loc_list_ref, enum dw_val_class, dw_vec_const, dw_val_node,
dw_loc_descr_node): Move to dwarf2out.h.
(current_fde, output_cfi_directive, build_cfa_loc, get_address_mode,
mem_loc_descriptor): Export.
(build_cfa_aligned_loc): Export. Take CFA as a parameter.
(dwarf2out_frame_init): Extract CIE generation code to
dwarf2cfi_frame_init.
From-SVN: r176015
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