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Re: [LNO, mainline] Remember rs6000 builtins decls
- From: Richard Henderson <rth at redhat dot com>
- To: Ayal Zaks <ZAKS at il dot ibm dot com>
- Cc: Andrew Pinski <pinskia at physics dot uc dot edu>, Devang Patel <dpatel at apple dot com>, gcc-patches at gcc dot gnu dot org, Dorit Naishlos <DORIT at il dot ibm dot com>
- Date: Sun, 6 Jun 2004 18:11:04 -0700
- Subject: Re: [LNO, mainline] Remember rs6000 builtins decls
- References: <OF0C7501F7.236A948D-ONC2256EAB.006D011C-C2256EAB.00707100@il.ibm.com>
On Sun, Jun 06, 2004 at 11:28:09PM +0300, Ayal Zaks wrote:
> Well, take loads/stores from/to unaligned memory addresses as an example.
> The vectorizer needs to know if the target supports such operations, and if
> so at what cost. Note that such a cost might be amortized across several
> loads/stores, and could determine if the entire loop is worth vectorizing
> or not.
And you get this from tables of FUNCTION_DECLs ... how?
I think pinskia's point is very valid.
r~