[RyuJIT] adding a function for checking if a HWIntrinsicFlag is set or unset

[fiigii]

dotnet/coreclr#16183 (comment)

cc @CarolEidt @tannergooding

[CarolEidt]

@fiigii, I believe this addresses one of the TODO items from#16183, but there's not enough context here to understand the issue. Could you explain, and reference the relevant source if possible?

[fiigii]

but there's not enough context here to understand the issue. Could you explain, and reference the relevant source if possible?

@CarolEidt
@tannergooding suggested this improvement at dotnet/coreclr#16183 (comment), I think this is just a convenient function to make the code more readable.

[tannergooding]

Resolved with dotnet/coreclr#18255