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Re: intent in cfg_layout_initialize

From: DJ Delorie <dj at redhat dot com>
To: hubicka at ucw dot cz, gcc at gcc dot gnu dot org
Date: Thu, 29 Apr 2004 19:31:45 -0400
Subject: Re: intent in cfg_layout_initialize
References: <200404290407.i3T47TOm030427@greed.delorie.com> <20040429064641.GB31967@atrey.karlin.mff.cuni.cz> <200404291355.i3TDte2w002739@greed.delorie.com>

> > I think best fix is to simply add parameter of cfglayout_initialize
> > specifying whether the liveness shall be preserved, as for tracer
> > the cfglayout_initialize is called before liveness is built.
> 
> The one that I'm seeing is the call from the start of
> reorder_basic_blocks().

Didn't work.  x86 failed many tests because update_life got confused
about the FPU registers ($st, $st(1), etc) and deleted a few sets of
$st that it shouldn't have :-P

Any ideas?  Should I disable jump elimination for CLEANUP_CFGLAYOUT ?

References:
- intent in cfg_layout_initialize
  - From: DJ Delorie
- Re: intent in cfg_layout_initialize
  - From: Jan Hubicka
- Re: intent in cfg_layout_initialize
  - From: DJ Delorie

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