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Date:   Wed, 13 Dec 2017 01:51:25 +0000
From:   Al Viro <>
To:     Jakub Kicinski <>
Cc:     Linus Torvalds <>,,
Subject: Re: [RFC][PATCH] new byteorder primitives - ..._{replace,get}_bits()

On Tue, Dec 12, 2017 at 05:35:28PM -0800, Jakub Kicinski wrote:

> It used to be __always_inline, but apparently LLVM/clang doesn't
> propagate constants :(  
> 4e59532541c8 ("nfp: don't depend on compiler constant propagation")

Doesn't propagate constants or doesn't have exact same set of
rules for __builtin_constant_p()?  IOW, if you dropped that
BUILD_BUG_ON(), what would be left after optimizations?

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