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[PATCH GCC][1/4]Extend interface ref_at_iteration to compute ref @ (NITERS + ITERS)-th iteration

From: Bin Cheng <Bin dot Cheng at arm dot com>
To: "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>
Cc: nd <nd at arm dot com>
Date: Tue, 27 Jun 2017 10:48:38 +0000
Subject: [PATCH GCC][1/4]Extend interface ref_at_iteration to compute ref @ (NITERS + ITERS)-th iteration
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Hi,
This is a simple patch extending interface ref_at_iteration in order to compute memory
refernce at (NITERS + ITERS)-th iteration.  This is for following predictive commoning
pass enhancement in which we need to compute reference after (NITERS) loop at
ITERS shifted iterations.
Bootstrap(O2/O3) in patch series on x86_64 and AArch64.  Is it OK?

Thanks,
bin
2017-06-21  Bin Cheng  <bin.cheng@arm.com>

	* tree-predcom.c (ref_at_iteration): Add parameter NITERS.  Compute
	memory reference to DR at (NITERS + ITERS)-th iteration of loop.

Attachment: ref-at-iteration-20170620.txt
Description: ref-at-iteration-20170620.txt

Follow-Ups:
- Re: [PATCH GCC][1/4]Extend interface ref_at_iteration to compute ref @ (NITERS + ITERS)-th iteration
  - From: Richard Biener

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