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Re: [patch] tree-cfg.c: Speed up thread_jumps.

From: Andrew Pinski <pinskia at physics dot uc dot edu>
To: Kazu Hirata <kazu at cs dot umass dot edu>
Cc: gcc-patches at gcc dot gnu dot org
Date: Mon, 8 Nov 2004 00:03:52 -0500
Subject: Re: [patch] tree-cfg.c: Speed up thread_jumps.
References: <20041107.235934.123924562.kazu@cs.umass.edu>

On Nov 7, 2004, at 11:59 PM, Kazu Hirata wrote:

Hi,
Attached is a patch to speed up thread_jumps by keeping a pointer to
the last used element in the worklist.
This trick is used in cfganal.c:find_unreachable_blocks as well.

Note that we get to keep one fewer variables in innermost loops.


Should IVopts do this for us?  Can you file a bug for this optimization
since it seems like it should be doing it.

Thanks,
Andrew Pinski

References:
- [patch] tree-cfg.c: Speed up thread_jumps.
  - From: Kazu Hirata

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