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Re: [PATCH] Clear LOOP_CLOSED_SSA after pass_ccp

From: Jeff Law <law at redhat dot com>
To: Tom de Vries <Tom_deVries at mentor dot com>, "gcc-patches at gnu dot org" <gcc-patches at gnu dot org>
Date: Mon, 16 Nov 2015 15:01:36 -0700
Subject: Re: [PATCH] Clear LOOP_CLOSED_SSA after pass_ccp
Authentication-results: sourceware.org; auth=none
References: <564A4BA8 dot 6000309 at mentor dot com>

On 11/16/2015 02:33 PM, Tom de Vries wrote:

Hi,

while playing around with inserting pass_ccp here and there in the pass
list, I put it after a pass where the loops state contained
LOOP_CLOSED_SSA.

And apparently pass_ccp does not preserve loop-closed ssa.

As a consequence, during executing the pass_ccp todos,
verify_loop_closed_ssa fails.

This patch fixes that by noting in pass_ccp that it does not preserve
loop-closed ssa.

OK for trunk if bootstrap and reg-test succeeds?

OK.
jeff

References:
- [PATCH] Clear LOOP_CLOSED_SSA after pass_ccp
  - From: Tom de Vries

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