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Re: [PATCH] Fix SCHED_GROUP_P ICEs on v850

From: Graham Stott <graham dot stott at btinternet dot com>
To: "Vladimir N. Makarov" <vmakarov at redhat dot com>
Cc: Roger Sayle <roger at www dot eyesopen dot com>, gcc-patches at gcc dot gnu dot org
Date: Sun, 19 Jan 2003 22:53:51 +0000
Subject: Re: [PATCH] Fix SCHED_GROUP_P ICEs on v850
References: <Pine.LNX.4.44.0301190809100.30567-100000@www.eyesopen.com> <3E2AEFC3.FFB2C315@redhat.com>

Vlad,

  I think there is no big harm from the patch.  We can only lose a note (it
might be serious or not, at least it is less serious than the ice).  The
scheduler removes notes before scheduling a block.  There should be no notes
at this stage but they are present.  So the bug is in something else.
I suspect that when we move insn from one block to another, the block being
scheduled has no notes but the block from which the insn is moved has
notes.  This is a design flaw.  It can not be easy solved.

Vlad

It's NOTE_INSN_DELETED notes that are tripping up the abort.

Graham

Follow-Ups:
- Re: [PATCH] Fix SCHED_GROUP_P ICEs on v850
  - From: Vladimir Makarov

References:
- [PATCH] Fix SCHED_GROUP_P ICEs on v850
  - From: Roger Sayle
- Re: [PATCH] Fix SCHED_GROUP_P ICEs on v850
  - From: Vladimir N. Makarov

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