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Re: [PATCH] Fix parts of PR61607

From: Jeff Law <law at redhat dot com>
To: Richard Biener <rguenther at suse dot de>, gcc-patches at gcc dot gnu dot org
Date: Wed, 25 Jun 2014 12:34:48 -0600
Subject: Re: [PATCH] Fix parts of PR61607
Authentication-results: sourceware.org; auth=none
References: <alpine dot LSU dot 2 dot 11 dot 1406251605030 dot 29270 at zhemvz dot fhfr dot qr>

On 06/25/14 08:06, Richard Biener wrote:


This removes prematurely killing loops during jump threading
and moves it to a spot where we know we didn't cancel the
jump thread.

Bootstrapped on x86_64-unknown-linux-gnu, testing in progress.

Ok?

Thanks,
Richard.

2014-06-25  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/61607
	* tree-ssa-threadupdate.c (ssa_redirect_edges): Cancel the
	loop if we redirected its latch edge.
	(thread_block_1): Do not cancel loops prematurely.

This is fine. Looking at how often we prematurely cancel loops has beenon my todo list for a while. Thanks for taking care of it.


jeff

References:
- [PATCH] Fix parts of PR61607
  - From: Richard Biener

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