Re: [PATCH v4 0/1] MR3546: gdiplus: move pointer calculation outside inner loop for alpha_blend_bmp_pixels

[Jeffrey Smith (＠whydoubt)]

On Mon Aug 14 15:03:01 2023 +0000, Alexandre Julliard wrote:
> I expect that any decent compiler is going to move the calculation out
> of the inner loop, so this won't make any change in performance.
> Doing micro-optimizations at the C level is usually a waste of time.

Running a mocked-up test on godbolt shows:
- clang results in the same assembly with or without the change.
- gcc also moves the calculation out of the inner loop (though the changed code does result in slightly shorter assembly).

So yeah, there is no meaningful gain here.