[PATCH, rs6000] testsuite fixup pr96139 tests

[Segher Boessenkool]

Hi!

On Fri, Sep 11, 2020 at 02:55:03PM -0500, will schmidt wrote:
> > > --- a/gcc/testsuite/gcc.target/powerpc/pr96139-c.c
> > > +++ b/gcc/testsuite/gcc.target/powerpc/pr96139-c.c
> > > @@ -1,7 +1,7 @@
> > >  /* { dg-do run } */
> > > -/* { dg-options "-O2 -Wall" } */
> > > +/* { dg-options "-O2 -Wall -maltivec" } */
> > >  /* { dg-require-effective-target powerpc_altivec_ok } */
> > 
> > But this one as well, why does it not need VSX like the rest?
> 
> I made these changes based on the failures reported when I tested
> against older targets, and thats all it seems to want.  :-) 
> 
> Upon further investigation, it appears that the logic simplifies down
> to a BIT_FIELD_REF against the llfoo symbol and the call to printf. 
> The actual code generation consists entirely of non-vector instructions
> (lis,ori,std,addi,... bl..).  So it simply does not need the vsx
> support.

Ah, this testcase will not actually use vectors at all.  It just needs
-maltivec for altivec.h to work, and for the "vector" keyword.

Okay for trunk.  Thank you!


Segher