[PATCH] ARM: ISB options other than SY are reserved

[Renato Golin]

Hi Amaury,

Sorry for the delay, I think the patch looks good overall. The only
nit-pick I have is:

+  } else if (Tok.is(AsmToken::Hash) ||
+             Tok.is(AsmToken::Dollar) ||
+             Tok.is(AsmToken::Integer)) {
+    if (Parser.getTok().isNot(AsmToken::Integer))
+      Parser.Lex(); // Eat the '#'.

The comment is misleading, should be "eat # and $" or something like that.

Other than that, I'm happy with it.

cheers,
--renato
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