[11] RFR: Re-push 8237007

[Aleksey Shipilev]

Hi,

I want to re-push 8237007 in order to have proper backport synopsis. Otherwise it would throw off
issue tracking and on-going 11u upstreaming that needs "[backport]" for issue list.

Webrev (supposed to be empty, because this thing is effectively no-op):
  https://cr.openjdk.java.net/~shade/shenandoah/repush-8237007/webrev.01/

"hg out":

changeset:   53743:3120b7b887ba
user:        shade
date:        Fri Jan 17 17:17:49 2020 +0100
summary:     Backout 8237007: Shenandoah: assert(_base == Tuple) failure during C2 compilation

changeset:   53744:e3b73ca3ac87
tag:         tip
user:        roland
date:        Thu Jan 09 17:26:26 2020 +0100
summary:     [backport] 8237007: Shenandoah: assert(_base == Tuple) failure during C2 compilation

Testing: build

-- 
Thanks,
-Aleksey