[tuples] tree-tailcall.c

[Zdenek Dvorak]

Hi,

> Zdenek, you committed changes to tree-tailcall.c but you didn't fully 
> convert the file.  Was that a mis-commit?  The file does not compile and 
> uses PHI_RESULT instead of gimple_phi_result.

the file compiles for me; it indeed uses PHI_RESULT, but since
that is equivalent to DEF_FROM_PTR (gimple_phi_result_ptr (PHI)),
it does not cause any problems (I was not aware of that using
gimple_phi_result is preferable, I will fix that).

Zdenek