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111
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1 /* This plugin verifies the source-code location ranges of
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2 expressions, at the pre-gimplification tree stage. */
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3 /* { dg-options "-O" } */
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4
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5 #include "gcc-plugin.h"
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6 #include "config.h"
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7 #include "system.h"
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8 #include "coretypes.h"
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9 #include "tm.h"
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10 #include "tree.h"
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11 #include "stringpool.h"
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12 #include "toplev.h"
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13 #include "basic-block.h"
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14 #include "hash-table.h"
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15 #include "vec.h"
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16 #include "ggc.h"
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17 #include "basic-block.h"
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18 #include "tree-ssa-alias.h"
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19 #include "internal-fn.h"
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20 #include "gimple-fold.h"
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21 #include "tree-eh.h"
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22 #include "gimple-expr.h"
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23 #include "is-a.h"
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24 #include "gimple.h"
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25 #include "gimple-iterator.h"
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26 #include "tree.h"
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27 #include "tree-pass.h"
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28 #include "intl.h"
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29 #include "plugin-version.h"
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30 #include "diagnostic.h"
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31 #include "context.h"
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32 #include "print-tree.h"
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33
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34 int plugin_is_GPL_compatible;
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35
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36 static void
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37 emit_warning (location_t loc)
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38 {
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39 source_range src_range = get_range_from_loc (line_table, loc);
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40 warning_at (loc, 0,
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41 "tree range %i:%i-%i:%i",
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42 LOCATION_LINE (src_range.m_start),
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43 LOCATION_COLUMN (src_range.m_start),
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44 LOCATION_LINE (src_range.m_finish),
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45 LOCATION_COLUMN (src_range.m_finish));
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46 }
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47
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48 tree
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49 cb_walk_tree_fn (tree * tp, int * walk_subtrees,
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50 void * data ATTRIBUTE_UNUSED)
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51 {
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52 if (TREE_CODE (*tp) != CALL_EXPR)
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53 return NULL_TREE;
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54
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55 tree call_expr = *tp;
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56 tree fn = CALL_EXPR_FN (call_expr);
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57 if (TREE_CODE (fn) != ADDR_EXPR)
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58 return NULL_TREE;
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59 fn = TREE_OPERAND (fn, 0);
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60 if (TREE_CODE (fn) != FUNCTION_DECL)
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61 return NULL_TREE;
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62 if (strcmp (IDENTIFIER_POINTER (DECL_NAME (fn)), "__emit_expression_range"))
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63 return NULL_TREE;
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64
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65 /* Get arg 1; print it! */
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66 tree arg = CALL_EXPR_ARG (call_expr, 1);
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67
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68 emit_warning (EXPR_LOCATION (arg));
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69
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70 return NULL_TREE;
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71 }
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72
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73 static void
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74 callback (void *gcc_data, void *user_data)
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75 {
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76 tree fndecl = (tree)gcc_data;
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77 walk_tree (&DECL_SAVED_TREE (fndecl), cb_walk_tree_fn, NULL, NULL);
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78 }
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79
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80 int
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81 plugin_init (struct plugin_name_args *plugin_info,
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82 struct plugin_gcc_version *version)
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83 {
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84 struct register_pass_info pass_info;
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85 const char *plugin_name = plugin_info->base_name;
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86 int argc = plugin_info->argc;
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87 struct plugin_argument *argv = plugin_info->argv;
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88
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89 if (!plugin_default_version_check (version, &gcc_version))
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90 return 1;
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91
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92 register_callback (plugin_name,
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93 PLUGIN_PRE_GENERICIZE,
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94 callback,
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95 NULL);
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96
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97 return 0;
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98 }
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