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  1. # This package includes a gcc plugin, which can be loaded when debugging gcc,
    2. 

  2. # to show internal structures graphically.
    3. 

  3. #
    4. 

  4. # This program is free software: you can redistribute it and/or modify
    5. 

  5. # it under the terms of the GNU General Public License as published by
    6. 

  6. # the Free Software Foundation, either version 2 of the License, or
    7. 

  7. # (at your option) any later version.
    8. 

  8. #
    9. 

  9. # This program is distributed in the hope that it will be useful,
    10. 

  10. # but WITHOUT ANY WARRANTY; without even the implied warranty of
    11. 

  11. # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    12. 

  12. # GNU General Public License for more details.
    13. 

  13. #
    14. 

  14. # You should have received a copy of the GNU General Public License
    15. 

  15. # along with this program.  If not, see <http://www.gnu.org/licenses/>.
    16. 

  16. 

  17. 

  18. ###########
    19. 

  19. # Install #
    20. 

  20. ###########
    21. 

  21. 

  22. The plugin requires gcc-8 version or later, which supports the plugin features. To install it, run the following commands,
    23. 

  23. 

  24. ./autogen.sh
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  25. ./gcc8.sh
    26. 

  26. make
    27. 

  27. make install
    28. 

  28. make distclean
    29. 

  29. 

  30. #########
    31. 

  31. # Usage #
    32. 

  32. #########
    33. 

  33. 

  34. 

  35. 1. Use plugin in gdb.
    36. 

  36. 

  37. The pre-defined dot plugin commands can be used. Rename file "gml4gtk-plugin.gdbinit" to ".gdbinit" or add "source dot-plugin.gdbinit" in your original ".gdbinit".
    38. 

  38. 

  39. You can use -fplugin-arg-gml4gtk-viewer=gml4gtk to select dot viewer
    40. 

  40. 

  41. 2. Use plugin without gdb.
    42. 

  42. 

  43. The plugin also can work without gdb, using -fplugin-arg-gml4gtk_plugin-option. Options are,
    44. 

  44. 

  45.     * cgraph ---- dump the call graph before IPA passes.
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  46.     * cgraph-callee ---- dump the callee graph for each function.
    47. 

  47.     * cgraph-caller ---- dump the caller graph for each function.
    48. 

  48.     * gimple-hierarchy ---- dump the gimple hierarchy graph.
    49. 

  49.     * help ---- show this help.
    50. 

  50.     * passes ---- dump the passes graph.
    51. 

  51.     * pass-lists ---- dump the pass lists graph.
    52. 

  52.     * tree-hierarchy ---- dump the tree hierarchy graph.
    53. 

  53.     * viewer=name ---- set the dot viewer
    54. 

  54. 

  55. Here's an example about how to use dot plugin without gdb:
    56. 

  56. 

  57.     gcc -fplugin=/path/to/gml4gtk_plugin.so -fplugin-arg-gml4gtk_plugin-cgraph foo.c 
    58. 

  58. 

  59. There are examples in "example" directory. 
    60. 

  60. 

  61. ##############
    62. 

  62. # Bug report #
    63. 

  63. ##############
    64. 

  64. 

  65. Any suggestion or bug report are welcome.
    66. 

  66.