902690 - IonMonkey: Fake parallel compilation scheduling for reducing fuzz-test cases.

Status: NEW

(Core :: JavaScript Engine, defect, P5)

Description

[Nicolas B. Pierron [:nbp]]

One of the trouble which can be encountered by fuzzers is that running the compilation on a separated thread can cause different kind of issues where we might collect information in baseline or TI which should have invalidated/updated the compiled script

I suggest (based on gary's recommendation to not use a command line argument, but a shell function), to add a shell function such as "jitOptions(…)", which would give the ability to set a variable for the expected number of the Ion calls which should be done before we run the rest of the compilation.

I suggest the name jitOptions, because *later*, I assume that we might also want to handle ion-eager and other flags the same way in addition to the command line arguments.

Comment 1

[Gary Kwong [:gkw] [:nth10sd] (NOT official MoCo now)]

> I suggest (based on gary's recommendation to not use a command line
> argument, but a shell function), to add a shell function such as
> "jitOptions(…)", which would give the ability to set a variable for the
> expected number of the Ion calls which should be done before we run the rest
> of the compilation.

I mentioned this because I remembered the OOMAfterAllocations function which came about as a result of moving away from -A in bug 872823.

Comment 2

[Nicolas B. Pierron [:nbp]]

Attachment: WIP - set JIT options

This patch add a shell function for changing JIT parameters.