git: openjdk/jdk21u: master: 2 new changesets

[Goetz Lindenmaier]

Changeset: bbfbc7b3
Author:    Goetz Lindenmaier <goetz at openjdk.org>
Date:      2023-10-04 07:06:29 +0000
URL:       https://git.openjdk.org/jdk21u/commit/bbfbc7b3479debe9f53d63c3df4db1ac65e94952

8308103: Massive (up to ~30x) increase in C2 compilation time since JDK 17

Backport-of: c6ab9c2905203e1ec897b3404f9179ff975d0054

! src/hotspot/share/opto/loopopts.cpp
+ test/hotspot/jtreg/compiler/loopopts/TestSinkingNodesCausesLongCompilation.java

Changeset: 67d2836d
Author:    Goetz Lindenmaier <goetz at openjdk.org>
Date:      2023-10-04 07:08:37 +0000
URL:       https://git.openjdk.org/jdk21u/commit/67d2836de282f702c701d9d9668fa9d419b0257b

8315377: C2: assert(u->find_out_with(Op_AddP) == nullptr) failed: more than 2 chained AddP nodes?

Backport-of: ba1a46392f0b9c77c64278f82513aaf51f5c9b1b

! src/hotspot/share/opto/loopnode.hpp
! src/hotspot/share/opto/loopopts.cpp
+ test/hotspot/jtreg/compiler/loopopts/TestSinkingMoreThan2AddPNodes.java