On 9/13/23 3:48 PM, Segher Boessenkool wrote:
- "TARGET_POWER10 && TARGET_POWERPC64"
+ "TARGET_POWER10 && TARGET_POWERPC64 && !RS6000_DISABLE_SCALAR_MODULO"
"vmoduq %0,%1,%2"
Did we ever test if this insn in fact is slower as well? I don't mean
either way, orthogonality is good, but ju
Hi!
On Fri, Jun 30, 2023 at 02:26:35PM -0500, Pat Haugen wrote:
> gcc/
> * config/rs6000/rs6000.cc (rs6000_rtx_costs): Check if disabling
> scalar modulo.
"Check whether the modulo instruction is disabled?"
> * config/rs6000/rs6000.md (mod3, *mod3): Disable.
> (define_expand umod
Ping.
On 6/30/23 2:26 PM, Pat Haugen via Gcc-patches wrote:
Updated from prior version to address latest review comment (simplify
umod3).
Disable generation of scalar modulo instructions.
It was recently discovered that the scalar modulo instructions can suffer
noticeable performance issues fo
