[Bug tree-optimization/116785] [15 Regression] RAJAPerf REDUCE_SUM regresses with r15-792-gf0a02467bbc35a

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116785

--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #5)
> Note I think this code has undefined code in it.
> 
> 
> 
> double sm0[max_DQ*max_DQ*max_DQ];
> double (*u)[max_D1D][max_D1D] = (double (*)[max_D1D][max_D1D]) sm0;
> 
> That seems questionable.

That looks good, we specifically mangle TBAA (in particular) to allow this.