[Bug testsuite/105706] [13 regression] gcc.target/powerpc/pr78604.c fails after r13-707-g68e0063397ba82

["linkw at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105706

Kewen Lin <linkw at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |linkw at gcc dot gnu.org
   Last reconfirmed|                            |2022-05-24
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW

--- Comment #1 from Kewen Lin <linkw at gcc dot gnu.org> ---
(In reply to seurer from comment #0)
> g:68e0063397ba820e71adc220b2da0581dce29ffa, r13-707-g68e0063397ba82
> make  -k check-gcc RUNTESTFLAGS="powerpc.exp=gcc.target/powerpc/pr78604.c"
> FAIL: gcc.target/powerpc/pr78604.c scan-tree-dump-times vect
> "vect_model_simple_cost" 8
> # of expected passes		4
> # of unexpected failures	1
> 
> 
> Does this test need to be adjusted, too?
> 

Yes. The related commit mainly adjust the below gimple:

    iftmp.7_4 = _1 < _2 ? val2_7(D) : val1_8(D);

into

    _3 = _1 >= _2;
    iftmp.7_4 = _3 ? val1_8(D) : val2_7(D);

So for each function it has two statements (comparison and condition) calling
vect_model_simple_cost instead of one (condition). By checking the history, the
case was updated with r8-731, which meant to verify if vectorized COND_EXPRs
calling vect_model_simple_cost.

One simple fix is to adjust the match count to 16.