diff options
Diffstat (limited to 'gcc/gimple-low.c')
| -rw-r--r-- | gcc/gimple-low.c | 77 |
1 files changed, 0 insertions, 77 deletions
diff --git a/gcc/gimple-low.c b/gcc/gimple-low.c index 4417134..de0f6f2 100644 --- a/gcc/gimple-low.c +++ b/gcc/gimple-low.c @@ -55,7 +55,6 @@ static void lower_stmt (tree_stmt_iterator *, struct lower_data *); static void lower_bind_expr (tree_stmt_iterator *, struct lower_data *); static void lower_cond_expr (tree_stmt_iterator *, struct lower_data *); static void lower_return_expr (tree_stmt_iterator *, struct lower_data *); -static bool expand_var_p (tree); /* Lowers the body of current_function_decl. */ @@ -533,82 +532,6 @@ record_vars (tree vars) } } -/* Check whether to expand a variable VAR. */ - -static bool -expand_var_p (tree var) -{ - struct var_ann_d *ann; - - if (TREE_CODE (var) != VAR_DECL) - return true; - - /* Leave statics and externals alone. */ - if (TREE_STATIC (var) || DECL_EXTERNAL (var)) - return true; - - /* Remove all unused local variables. */ - ann = var_ann (var); - if (!ann || !ann->used) - return false; - - return true; -} - -/* Throw away variables that are unused. */ - -static void -remove_useless_vars (void) -{ - tree var, *cell; - FILE *df = NULL; - - if (dump_file && (dump_flags & TDF_DETAILS)) - { - df = dump_file; - fputs ("Discarding as unused:\n", df); - } - - for (cell = &cfun->unexpanded_var_list; *cell; ) - { - var = TREE_VALUE (*cell); - - if (!expand_var_p (var)) - { - if (df) - { - fputs (" ", df); - print_generic_expr (df, var, dump_flags); - fputc ('\n', df); - } - - *cell = TREE_CHAIN (*cell); - continue; - } - - cell = &TREE_CHAIN (*cell); - } - - if (df) - fputc ('\n', df); -} - -struct tree_opt_pass pass_remove_useless_vars = -{ - "vars", /* name */ - NULL, /* gate */ - remove_useless_vars, /* execute */ - NULL, /* sub */ - NULL, /* next */ - 0, /* static_pass_number */ - 0, /* tv_id */ - 0, /* properties_required */ - 0, /* properties_provided */ - 0, /* properties_destroyed */ - 0, /* todo_flags_start */ - TODO_dump_func, /* todo_flags_finish */ - 0 /* letter */ -}; /* Mark BLOCK used if it has a used variable in it, then recurse over its subblocks. */ |