Younes Manton comments

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                                            Younes Manton

Fix JIT System.nanoTime() in checkpoint mode

@r30shah can you look at the Z changes in particular?

Fix JIT System.nanoTime() in checkpoint mode

@0xdaryl can you or someone else familiar with the x86 codegen look at that part?

Fix JIT System.nanoTime() in checkpoint mode

I've - added a new JIT FE query that uses `isCRIUSupportEnabled`. - split the test case in two to verify that compilation before and after the C/R transition work as...

Fix JIT System.nanoTime() in checkpoint mode

Jenkins test sanity.functional xlinuxcriu jdk11

Fix JIT System.nanoTime() in checkpoint mode

One failure, but it doesn't look related to timing or checkpoint/restore functionality. #15617 was recently merged and looks related. @mpirvu does this crash look familiar? ``` [2022-08-08T22:58:01.867Z] =============================================== [2022-08-08T22:58:01.867Z] Running...

Fix JIT System.nanoTime() in checkpoint mode

It doesn't look like this test does any checkpointing at all.

JDK18 aarch64_mac Segmentation error vmState=0x00000000 Module=libj9jit29.dylib

It doesn't make sense to me that a dedicated JIT compilation thread would be executing such Java code. If writing to the code cache without calling `pthread_jit_write_protect_np()` causes a `SIGBUS`...

[WIP] Inline superClassTest for transformed checkCast nodes when castClass is runtime variable

Jenkins test sanity.functional all jdk8,jdk11

[WIP] Inline superClassTest for transformed checkCast nodes when castClass is runtime variable

Tests failed due to infrastructure issues, for example: ``` 17:29:24 Cannot contact cent6-x64-1: java.lang.InterruptedException ``` I'll retry tomorrow.

[WIP] Inline superClassTest for transformed checkCast nodes when castClass is runtime variable

Jenkins test sanity.functional all jdk8,jdk11