[Bug middle-end/42749] [4.5 Regression] -O2 and verify_stmts failed again

[rakdver at gcc dot gnu dot org]

------- Comment #10 from rakdver at gcc dot gnu dot org  2010-01-16 12:53 
-------
 /* Reject a tailcall if the type conversion might need
285                       additional code.  */
286                    if (gimple_assign_cast_p (stmt)
287                        && TYPE_MODE (TREE_TYPE (dest)) != TYPE_MODE
(TREE_TYPE (src_var)))
288                      return false;

This is suspicious; replacing the weird TYPE_MODE check with
useless_type_conversion_p fixes the problem.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42749