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  1. 25 Jul, 2011 29 commits
  3. 24 Jul, 2011 7 commits
  5. 23 Jul, 2011 4 commits
    • rth's avatar
      dwarf2cfi: Generate and connect traces. · 97c251e4
      rth authored 
      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.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@176705 138bc75d-0d04-0410-961f-82ee72b054a4
      97c251e4
    • rth's avatar
      dwarf2cfi: Introduce dw_trace_info. · b1613fc3
      rth authored 
      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.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@176704 138bc75d-0d04-0410-961f-82ee72b054a4
      b1613fc3
    • rth's avatar
      dwarf2cfi: Allocate reg_saved_in_data in the heap. · e53680b9
      rth authored 
              * dwarf2cfi.c (regs_saved_in_regs): Allocate from heap, not gc.
        Update all users to match.
        (execute_dwarf2_frame): Free reg_saved_in_data.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@176703 138bc75d-0d04-0410-961f-82ee72b054a4
      e53680b9
    • rth's avatar
      dwarf2cfi: Convert queued_reg_save to a VEC. · c73aa568
      rth authored 
      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.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@176702 138bc75d-0d04-0410-961f-82ee72b054a4
      c73aa568

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