[meta] 12.0.0 Release Blockers

@DimitryAndric


Bugzilla Link	48902
Version	11.0
OS	Linux
Depends On	#48374 #49263 #46956 #47532 #47931 #48176 #48210 #48221 #48235 llvm/llvm-bugzilla-archive#48901 #48248 #48249 #48251 #48252 #48257 #48258 #48261 #48263 #48264 #48265 #48270 #48271 #48272 #48274 #48275 #48278 #48279 #48287 #48291 #48292 #48293 #48294 #48295 #48296 #48297 #48298 #48299 #48300 #48301 #48302 #48303 #48311 #48313 #48317 #48333 #48337 #48338 #48342 #48350 #48354 #48355 #48365 #48369 #48370 #48375 #48376 #48377 #48383 #48387 #48389 #48390 #48391 #48393 #48394 #48395 #48402 #48403 #48415 #48417 #48418 #48419 #48436 #48456 #48458 #48461 #48481 #48482 #48483 #48484 #48493 #48502 #48506 #48507 #48520 #48541 #48549 #48551 #48559 #48562 #48563 #48571 #48573 #48574 #48587 #48599 #48609 #48611 #48641 #48643 #48662 #48664 #48677 #48678 #48683 #48709 #48713 #48720 #48737 #48745 #48756 #48811 #48815 #48819 #48828 #48853 #48883 #48885 #48931 #48975 #49076 #49089 #49096 #49118 #49122 #49176 #49248 #49249 #49252 #49279
CC	@DimitryAndric,@LebedevRI,@RKSimon,@slacka,@pogo59,@jprotze

Extended Description

This is the meta-bug for tracking 12.0.0 release blockers.

Rather than adding comments here, please file bugs and mark them as blocking this one.

The 12.0.0 release branch was created at 8e464dd