git: openjdk/jdk20u: master: 4 new changesets

[Tobias Hartmann]

Changeset: aae19b37
Author:    Tobias Hartmann <thartmann at openjdk.org>
Date:      2023-04-04 12:54:07 +0000
URL:       https://git.openjdk.org/jdk20u/commit/aae19b379041ff1e002fc13038fd535f6924f915

8300079: SIGSEGV in LibraryCallKit::inline_string_copy due to constant NULL src argument

Backport-of: 45e4e00981ef8b4bf143afce0889698319273c1d

! src/hotspot/share/opto/library_call.cpp
+ test/hotspot/jtreg/compiler/intrinsics/string/TestCopyValueOf.java

Changeset: 0343ba46
Author:    Tobias Hartmann <thartmann at openjdk.org>
Date:      2023-04-04 12:55:06 +0000
URL:       https://git.openjdk.org/jdk20u/commit/0343ba46a1793c414a744ff7b625a3b20c72c2d4

8299959: C2: CmpU::Value must filter overflow computation against local sub computation

Backport-of: 5f66024e957e5e40ce8d5a65717ea7f82c9f0b8f

! src/hotspot/share/opto/subnode.cpp
+ test/hotspot/jtreg/compiler/rangechecks/TestRangeCheckCmpUOverflowVsSub.java

Changeset: cbc2f897
Author:    Tobias Hartmann <thartmann at openjdk.org>
Date:      2023-04-04 12:56:06 +0000
URL:       https://git.openjdk.org/jdk20u/commit/cbc2f897d1e7535d6d31dec3a6ee3faf1b6542d2

8289748: C2 compiled code crashes with SIGFPE with -XX:+StressLCM and -XX:+StressGCM

Backport-of: 97c611d029b614bb462a8f5398ea75b2715c3f07

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

Changeset: 17dfaaf4
Author:    Tobias Hartmann <thartmann at openjdk.org>
Date:      2023-04-04 12:57:09 +0000
URL:       https://git.openjdk.org/jdk20u/commit/17dfaaf47c3be7d4a6be014092cedb0b94a0bbee

8300590: [JVMCI] BytecodeFrame.equals is broken

Backport-of: 06394ee8b110fe8e37a3b9e582f5dfbf225a3d89

! src/jdk.internal.vm.ci/share/classes/jdk.vm.ci.code/src/jdk/vm/ci/code/BytecodeFrame.java
+ test/hotspot/jtreg/compiler/jvmci/jdk.vm.ci.runtime.test/src/jdk/vm/ci/runtime/test/TestBytecodeFrame.java