Re: [PATCH] scsi: FlashPoint: Replace arithmetic addition by bitwise OR

[James Bottomley]

On Tue, 2023-02-07 at 16:51 +0530, Deepak R Varma wrote:
> When adding two bit-field mask values, an OR operation offers higher
> performance over an arithmetic operation. So, convert such additions
> to an OR based expressions. Issue identified using orplus.cocci
> semantic patch script.

No it doesn't, at least not for constants, which is the entirety of
this patch: the compiler can find the value at compile time, so the
whole lot becomes a load immediate of a single value.  Whether the
compiler sees OR or + is immaterial to the compile time computation. 
Perhaps Coccinelle should be fixed not to complain about this case?

James