[LLVMdev] LoopInterchange Pass

Owen Anderson resistor at me.com
Wed Jul 14 10:00:26 PDT 2010


The following two lines scare me:

  // TODO Perform data dependence analysis for the loop nest.
  // TODO Check if there is any data dependence preventing interchange.

It looks like your pass is going ahead and interchanging pairs of loops, without checking for correctness concerns.  Is this the case?  Have you tested it on, say, the LLVM nightly testsuite?


On Jul 13, 2010, at 5:14 PM, Satya Jandhayala wrote:

> --- On Tue, 7/13/10, Satya Jandhayala <satya_jandhayala at yahoo.com> wrote:
> From: Satya Jandhayala <satya_jandhayala at yahoo.com>
> Subject: LoopInterchange Pass
> To: llvmdev at cs.uiuc.edu
> Date: Tuesday, July 13, 2010, 12:06 PM
> Hi,
> I developed a Loop Interchange pass. Please take a look.
> I have not incorporate data dependence analysis check. I can insert it when the LoopDependenceAnalysis is available.
> Thank you
> Satya
> <LoopInterchange.cpp>_______________________________________________
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