Re: [PATCH v2 3/3] Simplify switch bit test clustering algorithm

2024-10-29 Thread Andi Kleen
On Tue, Oct 29, 2024 at 01:50:57PM +0100, Richard Biener wrote: > On Mon, Oct 28, 2024 at 9:58 PM Andi Kleen wrote: > > > > From: Andi Kleen > > > > The current switch bit test clustering enumerates all possible case > > clusters combinations to find ones that fit the bit test constrains > > best

Re: [PATCH v2 3/3] Simplify switch bit test clustering algorithm

2024-10-29 Thread Andrew Pinski
On Tue, Oct 29, 2024 at 3:04 PM Andi Kleen wrote: > > On Tue, Oct 29, 2024 at 01:50:57PM +0100, Richard Biener wrote: > > On Mon, Oct 28, 2024 at 9:58 PM Andi Kleen wrote: > > > > > > From: Andi Kleen > > > > > > The current switch bit test clustering enumerates all possible case > > > clusters

Re: [PATCH v2 3/3] Simplify switch bit test clustering algorithm

2024-10-29 Thread Richard Biener
On Mon, Oct 28, 2024 at 9:58 PM Andi Kleen wrote: > > From: Andi Kleen > > The current switch bit test clustering enumerates all possible case > clusters combinations to find ones that fit the bit test constrains > best. This causes performance problems with very large switches. > > For bit test