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Re: Improve end check on rs6000 prologue analyzer
- From: Daniel Jacobowitz <drow at false dot org>
- To: Mark Kettenis <mark dot kettenis at xs4all dot nl>, gdb-patches at sourceware dot org
- Date: Thu, 30 Nov 2006 15:11:46 -0500
- Subject: Re: Improve end check on rs6000 prologue analyzer
- References: <20060929213726.GA1770@nevyn.them.org> <200609301932.k8UJW0kw030997@elgar.sibelius.xs4all.nl> <20061017212114.GC12643@nevyn.them.org> <200610181958.k9IJw88G009044@elgar.sibelius.xs4all.nl> <20061018200554.GD13273@nevyn.them.org>
On Wed, Oct 18, 2006 at 04:05:54PM -0400, Daniel Jacobowitz wrote:
> On Wed, Oct 18, 2006 at 09:58:08PM +0200, Mark Kettenis wrote:
> > Unfortunately, I still get a few regressions, see below. They all
> > seem to be problems with not skipping the complete prologue. I get
> > the feeling that using line number information for prologue skipping
> > is just not reliable :(.
>
> It's true that it isn't completely reliable, but it's usually "good
> enough" and has its own advantages - it's better than accidentally
> walking off into the epilogue, for instance, as this code is currently
> somewhat prone to.
>
> What version of GCC are you using? Perhaps I can reproduce it with a
> different version.
Hi Mark, did you miss this question? I'd really like to figure out why
this patch causes regressions for you.
--
Daniel Jacobowitz
CodeSourcery