RFR: [backport] 8202976: Add C1 lea patching support for x86

[Roman Kennke]

This patch was actually missing the aarch64 parts. The original change 
did not have it either, it only came much later with the ZGC port to 
aarch64. I would like to add it here.

http://cr.openjdk.java.net/~rkennke/JDK-8202976-jdk8/webrev.01/

Testing: hotspot_gc_shenandoah (also, with the following SFX patches 
that actually use it)

Ok too?

Thanks,
Roman

On 23/11/2020 13:11, Aleksey Shipilev wrote:
> On 11/20/20 8:17 PM, Roman Kennke wrote:
>> http://cr.openjdk.java.net/~rkennke/JDK-8202976-jdk8/webrev.00/
> 
> Looks fine.
>