> > +rewrite_expr_tree_parallel (gassign *stmt, int width, bool has_fma,
> > +const vec
> > +&ops)
> > {
> >enum tree_code opcode = gimple_assign_rhs_code (stmt);
> >int op_num = ops.length ();
> > @@ -5483,10 +5494,11 @@ rewrite_expr_tree_parallel (
On Wed, May 17, 2023 at 3:02 PM Cui, Lili wrote:
>
> From: Lili Cui
>
> Make some changes in reassoc pass to make it more friendly to fma pass later.
> Using FMA instead of mult + add reduces register pressure and insruction
> retired.
>
> There are mainly two changes
> 1. Put no-mult ops and mul
Attach CPU2017 3 run results:
On ICX:
507.cactuBSSN_r: Improved by 1.7% for multi-copy .
503.bwaves_r : Improved by 0.60% for single copy .
507.cactuBSSN_r : Improved by 1.10% for single copy .
519.lbm_r : Improved by 2.21% for single copy .
no measurable changes for other ben
