[lworld] RFR: 8371993: [lworld] Aarch64: save bad values instead of rfp and lr above the extension space [v3]

[Marc Chevalier]

On Fri, 28 Nov 2025 14:11:51 GMT, Manuel Hässig <mhaessig at openjdk.org> wrote:

>> Marc Chevalier has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   review
>
> src/hotspot/cpu/aarch64/macroAssembler_aarch64.cpp line 5912:
> 
>> 5910:   if (framesize < ((1 << 9) + 2 * wordSize)) {
>> 5911:     sub(sp, sp, framesize);
>> 5912:     if (DEBUG_ONLY(zap_rfp_lr_spills) NOT_DEBUG(false)) {
> 
> Suggestion:
> 
>     if (DEBUG_ONLY(zap_rfp_lr_spills ||) false) {
> 
> This would be an alternative, if you want to reduce macro noise.

Yep, thought about that too. I like it equally.

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PR Review Comment: https://git.openjdk.org/valhalla/pull/1764#discussion_r2571813474