Add an argument to SuperPMI

[SeanWoo]

I want to suggest adding an optional -c argument for superpmi.py asmdiffs

What will it give?

This will allow you to run certain tests, and not all at once, this is especially useful when a problem occurs in a certain test and it is easier to run it alone than to run it all at once. This would especially affect when collecting JitDump.

How will it work?

Adding a new argument -c to superpmi.py and we throw it into superpmi.exe when we run asmdiff, if -c is specified, then we remove the -p key (since this does not work if -c is specified)

I can implement it

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Issue Details

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I want to suggest adding an optional -c argument for superpmi.py asmdiffs

What will it give?

This will allow you to run certain tests, and not all at once, this is especially useful when a problem occurs in a certain test and it is easier to run it alone than to run it all at once. This would especially affect when collecting JitDump.

How will it work?

Adding a new argument -c to superpmi.py and we throw it into superpmi.exe when we run asmdiff, if -c is specified, then we remove the -p key (since this does not work if -c is specified)

I can implement it

Author:	SeanWoo
Assignees:	-
Labels:	area-CodeGen-coreclr, untriaged
Milestone:	-

[JulieLeeMSFT]

CC @dotnet/jit-contrib.
Thanks @SeanWoo for suggesting to implement it. We will review it once you submit a PR.

[BruceForstall]

I've wanted to do this for a while; would be happy to see it. Without it, I've always just manually copy/pasted the superpmi.exe command line from the superpmi.log file generated by superpmi.py, and altered it as appropriate.

Note that you should add -c to both asmdiffs and replay for consistency.