[PATCH] [ARC] Update conditions for illegal placed instructions.

[Claudiu Zissulescu]

Hi Nick,

> PPS: Looking to the future, if you add more classes of ARC instructions
> then the is_br_jmp_insn macro might need updating.  I was wondering if it
> would be better if the type of instruction were encoded into the opcode
> structure directly, so that you do not need to test for a whole range of
> classes...

Cupertino and myself had a talk about the need to update a bit ARC's opcode structure, and it seems to us, as you nicely hinted, we need an extra field there for error checking/exceptions.

Thank you for feedback,
Claudiu