[patch] Fix g++.dg/gomp/{pr27325.C,pr27337-2.C}.

[Kazu Hirata]

Hi Andrew and Diego,

>>> +           if (targetm.cxx.cdtor_returns_this ())
>>> +             /* Because constructors and destructors return this,
>>> +                the call will have been cast to "void".  Remove the
>>> +                cast here.  We would like to use STRIP_NOPS, but it
>>> +                wouldn't work here because TYPE_MODE (t) and
>>> +                TYPE_MODE (TREE_OPERAND (t, 0)) are different.
>>> +                They are VOIDmode and Pmode, respectively.  */
>>> +             if (TREE_CODE (t) == NOP_EXPR)
>>> +               t = TREE_OPERAND (t, 0);
>> Why not just STRIP_NOPs?  Do we explicitly want to see through exactly
>> one NOP_EXPR here?
> 
> The comment explains why you can't use STRIP_NOPs already.  Now it
> could be with a loop, I was going to ask that question too.

Well, I don't have an example with two or more NOP_EXPR in series.  All I 
have is a CALL_EXPR wrapped with a single NOP_EXPR.  I can change the "if" 
to "while" if you like.

Kazu Hirata