WHY? commit ac76bc1145dd7f4476e5d982ce8f355f71015713

From: Steve Kargl <sgk_at_troutmask.apl.washington.edu>
Date: Fri, 05 Nov 2021 20:13:23 UTC 
Why was this committed?

commit ac76bc1145dd7f4476e5d982ce8f355f71015713
Author: Dimitry Andric <dim@FreeBSD.org>
Date:   Tue Feb 9 22:06:51 2021 +0100

    Fix lib/msun's ctrig_test/test_inf_inputs test case with clang >= 10
    
    This sprinkles a few strategic volatiles in an attempt to defeat clang's
    optimization interfering with the expected floating-point exception
    flags.

There is nothing, and I mean, nothing strategic about "sprinkling"
volatile onto the declaration of "float x, y, h;"  These variables
are referenced in all floating pointing operations in the file,
which means that there are needless reloading of x, y, and h
from memory.

-- 
Steve