Re: [PATCH v2, middle end]: Fix PR 37908, thinko with atomic NAND operation

[Andrew Haley <aph at redhat dot com>]

Jakub Jelinek wrote:
> On Wed, Oct 29, 2008 at 07:37:08PM +0000, Andrew Haley wrote:
>> No, because real-world users might depend on the documented behaviour.
> 
> Or maybe not.  I've tried codesearch.google.com on both
> __sync_fetch_and_nand and __sync_nand_and_fetch and it didn't reveal
> anything outside of GCC (and LLVM) sources.  I know that doesn't imply
> no such users exist at all, but just that there probably aren't many
> at least in the opensource world.

Thanks for doing that.  To be honest, the current behaviour isn't very
useful, so I'm not surprised it isn't much used.  I'm still going to
suggest that silently changing the behaviour with no warning isn't a
good idea, though.

Andrew.