On Thu, Mar 26, 2026 at 07:54:51AM +0100, Richard Biener wrote:
> Alan - you added this check, can you possibly guess what it was
> supposed to guard against?

I don't remember anything relevant.  It was probably over concerns
about causing useless copies.  I'd have to analyse the gcc source as
it was in late 2004 to say anything definite.

You should probably consider whether a copy to increase alignment is
better in cases when the address of the parm does not escape.

-- 
Alan Modra

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