+2012-05-16 Richard Guenther <rguenther@suse.de>
+
+ * tree-inline.c (insert_init_stmt): Do not call
+ mark_symbols_for_renaming.
+ (setup_one_parameter): Avoid initializing unused parameters.
+ (declare_return_variable): Properly handle DECL_BY_REFERENCE
+ return vars in SSA form.
+
2012-05-16 Richard Guenther <rguenther@suse.de>
* tree-flow.h (get_virtual_var): Remove.
}
gsi_insert_after (&si, init_stmt, GSI_NEW_STMT);
gimple_regimplify_operands (init_stmt, &si);
- mark_symbols_for_renaming (init_stmt);
if (!is_gimple_debug (init_stmt) && MAY_HAVE_DEBUG_STMTS)
{
STRIP_USELESS_TYPE_CONVERSION (rhs);
- /* We want to use MODIFY_EXPR, not INIT_EXPR here so that we
- keep our trees in gimple form. */
- if (def && gimple_in_ssa_p (cfun) && is_gimple_reg (p))
+ /* If we are in SSA form properly remap the default definition
+ or omit the initialization if the parameter is unused. */
+ if (gimple_in_ssa_p (cfun) && is_gimple_reg (p))
{
- def = remap_ssa_name (def, id);
- init_stmt = gimple_build_assign (def, rhs);
- SSA_NAME_IS_DEFAULT_DEF (def) = 0;
- set_default_def (var, NULL);
+ if (def)
+ {
+ def = remap_ssa_name (def, id);
+ init_stmt = gimple_build_assign (def, rhs);
+ SSA_NAME_IS_DEFAULT_DEF (def) = 0;
+ set_default_def (var, NULL);
+ }
}
else
init_stmt = gimple_build_assign (var, rhs);
if (gimple_in_ssa_p (id->src_cfun))
add_referenced_var (temp);
insert_decl_map (id, result, temp);
- /* When RESULT_DECL is in SSA form, we need to use it's default_def
- SSA_NAME. */
- if (gimple_in_ssa_p (id->src_cfun) && gimple_default_def (id->src_cfun, result))
- temp = remap_ssa_name (gimple_default_def (id->src_cfun, result), id);
+ /* When RESULT_DECL is in SSA form, we need to remap and initialize
+ it's default_def SSA_NAME. */
+ if (gimple_in_ssa_p (id->src_cfun)
+ && is_gimple_reg (result))
+ {
+ temp = make_ssa_name (temp, NULL);
+ insert_decl_map (id, gimple_default_def (id->src_cfun, result),
+ temp);
+ }
insert_init_stmt (id, entry_bb, gimple_build_assign (temp, var));
}
else