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Re: [RFA:] Fix PR rtl-optimization/20466, flow not invalidating knowledge for (mem (mem ...))
- From: David Edelsohn <dje at watson dot ibm dot com>
- To: Hans-Peter Nilsson <hans-peter dot nilsson at axis dot com>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Mon, 21 Mar 2005 16:31:28 -0500
- Subject: Re: [RFA:] Fix PR rtl-optimization/20466, flow not invalidating knowledge for (mem (mem ...))
- References: <200503141821.j2EIL8mK022796@ignucius.se.axis.com>
Have you looked at the effect of this patch on other
architectures, especially architectures that do not allow (mem (mem ...))?
If this change catches an address that is in a generic alias set, it will
cause a lot of extra memory traffic.
David