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Re: [patch, 4.5] Fix PR middle-end/43085 (make profiledbootstrap crashes due to dataflow bug)
- From: Eric Botcazou <ebotcazou at adacore dot com>
- To: "Ulrich Weigand" <uweigand at de dot ibm dot com>
- Cc: gcc-patches at gcc dot gnu dot org, bernds at codesourcery dot com
- Date: Thu, 28 Apr 2011 18:04:28 +0200
- Subject: Re: [patch, 4.5] Fix PR middle-end/43085 (make profiledbootstrap crashes due to dataflow bug)
- References: <201104271627.p3RGRT7B016124@d06av02.portsmouth.uk.ibm.com>
> The patch below is a backport of those fixes to the 4.5 branch, which
> fixes the profiled-bootstrap failure for me. (Note that on current
> mainling, the ifcvt.c dead_or_predictable routine has been significantly
> rewritten beyond what was done by those patches. These additional
> changes do not appear to be necessary to fix the PR ...)
Do you really need to backport the MERGE_SET_NOCLOBBER stuff? This will cause
the branch to optimize more aggressively than before.
--
Eric Botcazou