[LLVMdev] loop carried dependence analysis?

[Arnaldo]

Preston, thanks for the explanation and patch.  Now it's printing the
direction and distance values.

On Tue, Nov 13, 2012 at 12:22 PM, Preston Briggs
<preston.briggs at gmail.com>wrote:

> Erkan, you're right. Sorry about that.
> Attached is the most recent version.
>
> Preston
>
>
>
> Hi Preston,
>> I am trying to use DA as well. I used your example and commands that you
>> wrote in order to get DA information.
>> However, it does not report any dependence info.
>> I am wondering whether your local copy differs from the one on the
>> repository ?
>> Thanks.
>> Erkan.
>
>
>
> ---------- Forwarded message ----------
> From: Preston Briggs <preston.briggs at gmail.com>
> Date: Wed, Nov 7, 2012 at 12:51 PM
> Subject: DependenceAnalysis patch
> To: "llvm-commits at cs.uiuc.edu" <llvm-commits at cs.uiuc.edu>, Chandler
> Carruth <chandlerc at google.com>, Hal Finkel <hfinkel at anl.gov>, Benjamin
> Kramer <benny.kra at gmail.com>
>
>
> Here's a patch that covers the problems reported by Chandler last week.
> It checks the base pointer of each GEP to be sure they are loop
> invariant. The patch also updates the -analyze functionality so that all
> pairs of memory references are tested. Finally, all the test cases have
> been updated.
>
> I haven't yet updated DA to analyze pairs of pointer dereferences. I
> wanted to get the initial correction in place first. I also expect that
> analyzer pointer derefs will benefit from delinearization and am hoping it
> gets incorporated soon.
>
> If someone could review this change and check it in, if appropriate, I'd
> be obliged.
>
> Thanks,
> Preston
>
>
>
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