[aarch64-port-dev ] RFR: 8252259: AArch64: Adjust default value of FLOATPRESSURE

Andrew Haley aph at redhat.com
Tue Aug 25 11:52:52 UTC 2020

On 25/08/2020 07:03, Joshua Zhu wrote:
> Therefore I propose the default value of FLOATPRESSURE be 32 because
> there are 32 float/SIMD registers on aarch64 and also the value of register
> pressure is the same as 1 for each LRG of Op_RegL/Op_RegD/Op_Vec. [3]
> Could you please help review this change?
> JBS: https://bugs.openjdk.java.net/browse/JDK-8252259
> Webrev: http://cr.openjdk.java.net/~jzhu/8252259/webrev.00/

Yes, thanks. I can't remember why FLOATPRESSURE is 64, but it
certainly looks like 32 is a much more sensible value.

Andrew Haley  (he/him)
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
EAC8 43EB D3EF DB98 CC77 2FAD A5CD 6035 332F A671

More information about the aarch64-port-dev mailing list