RFR(XS): 8138896: C1: NativeGeneralJump is mixed up with NativeCall in C1 patching code

[Doerr, Martin]

Hi,

I have a webrev to clean up the usage of NativeGeneralJump where it is required. Seems like on other platforms than PPC64 NativeGeneralJump and NativeCall have the same size, so it is working by chance.
This change is a prerequisite for our C1 on PPC64 contribution where we observed crashes due to this bug.

The webrev is here:
http://cr.openjdk.java.net/~mdoerr/8138896_c1_patching_fix/webrev.00/

@Christian:
You already had a look at it. Can I consider it as reviewed?

I will also need a sponsor, please.

Best regards,
  Martin

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