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  1. 25 Jul, 2011 25 commits
  3. 24 Jul, 2011 7 commits
  5. 23 Jul, 2011 8 commits
    • dwarf2cfi: Generate and connect traces. · 829bdd4b 
      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
      Richard Henderson committed
    • dwarf2cfi: Introduce dw_trace_info. · 43215a89 
      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
      Richard Henderson committed
    • dwarf2cfi: Allocate reg_saved_in_data in the heap. · 6ffc63e1 
              * 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
      Richard Henderson committed
    • dwarf2cfi: Convert queued_reg_save to a VEC. · 999646c1 
      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
      Richard Henderson committed
    • dwarf2cfi: Remove dw_cfi_row_ref typedef. · ce363ef2 
              * dwarf2cfi.c (dw_cfi_row_ref): Remove.  Update all users.

From-SVN: r176701
      Richard Henderson committed
    • dwarf2cfi: Implement change_cfi_row. · 57e16c96 
      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
      Richard Henderson committed
    • dwarf2cfi: Populate CUR_ROW->REG_SAVE. · f1a0e830 
      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
      Richard Henderson committed
    • dwarf2cfi: Rename cfi_insn to add_cfi_insn. · 141618e2 
      Make it consistent with add_cfi_vec.

        * dwarf2cfi.c (add_cfi_insn): Rename from cfi_insn.  Update all users.

From-SVN: r176698
      Richard Henderson committed