RFR(sh/jdk11): Shenandoah: Isolate Shenandoah-specific aarch64 changes

[Aleksey Shipilev]

On 7/7/20 10:36 AM, Roman Kennke wrote:
> This isolates the remaining shared-code changes in aarch64 in
> shenandoah/jdk11. The intention is that when building without
> Shenandoah, it'd compile the exact same code as current upstream
> jdk11u, and that it is obvious from the vs-upstream-patch that it does.
> 
> http://cr.openjdk.java.net/~rkennke/shjdk11-isolate-aarch64/webrev.00/

This:

 876 #if INCLUDE_SHENANDOAHGC
 877   if (UseShenandoahGC) {
 878     __ load_mirror(r10, rmethod);
 879     __ stp(r10, zr, Address(sp, 4 * wordSize));
 880   } else {
 881 #endif
 882   __ load_mirror(rscratch1, rmethod);
 883   __ stp(rscratch1, zr, Address(sp, 4 * wordSize));
 884   SHENANDOAHGC_ONLY(})

...is probably just:

 #if INCLUDE_SHENANDOAHGC
   if (UseShenandoahGC) {
     __ load_mirror(r10, rmethod);
     __ stp(r10, zr, Address(sp, 4 * wordSize));
   } else
 #else
   {
     __ load_mirror(rscratch1, rmethod);
     __ stp(rscratch1, zr, Address(sp, 4 * wordSize));
   }
 #endif


Otherwise looks good.

-- 
Thanks,
-Aleksey