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Re: [PATCH] Fix RTL checking failure in fix_crossing_unconditional_branches
- From: Richard Henderson <rth at redhat dot com>
- To: Ian Lance Taylor <ian at airs dot com>
- Cc: Eric Botcazou <ebotcazou at libertysurf dot fr>, gcc-patches at gcc dot gnu dot org
- Date: Fri, 21 Oct 2005 16:04:11 -0700
- Subject: Re: [PATCH] Fix RTL checking failure in fix_crossing_unconditional_branches
- References: <200510212142.49837.ebotcazou@libertysurf.fr> <m38xwma7tz.fsf@gossamer.airs.com>
On Fri, Oct 21, 2005 at 02:17:12PM -0700, Ian Lance Taylor wrote:
> Looking at this I wonder if it would just be simpler to let BARRIERs
> have a BLOCK_FOR_INSN field.
Eh. They ought never be part of a basic block, so in theory
they don't need one.
> Letting them have a BLOCK_FOR_INSN field would permit us to remove a
> bunch of !BARRIER_P tests.
That's probably not worth nothing, fair enough. We could
simply rely on other rtx validation to see that barriers
aren't part of blocks.
r~