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Date: Mon, 6 May 2024 10:52:09 -0700
From: Nathan Chancellor <nathan@kernel.org>
To: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Cc: Yury Norov <yury.norov@gmail.com>, Miguel Ojeda <ojeda@kernel.org>,
	Kuan-Wei Chiu <visitorckw@gmail.com>,
	kernel test robot <lkp@intel.com>, llvm@lists.linux.dev,
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	Nick Desaulniers <ndesaulniers@google.com>,
	Bill Wendling <morbo@google.com>,
	Justin Stitt <justinstitt@google.com>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v5 1/2] lib/test_bitops: Add benchmark test for fns()
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On Sun, May 05, 2024 at 12:42:50PM +0200, Miguel Ojeda wrote:
> On Sat, May 4, 2024 at 12:23 AM Nathan Chancellor <nathan@kernel.org> wrote:
> > One gotcha that might be worth mentioning is that this combination only
> > works on functions and non-local variables (i.e., static or global).
> 
> Yeah, since the `unused` one only applies to that, right?

No, unused can be used with local variables, used cannot.

https://godbolt.org/z/1hroMGzb1

Cheers,
Nathatn