From: Jan Hubicka <hubicka@ucw.cz>
To: Richard Henderson <rth@redhat.com>
Cc: Jan Hubicka <hubicka@ucw.cz>,
bernds@codesourcery.com, gcc-patches@gcc.gnu.org
Subject: Re: [RFC PATCH 0/9] CFG aware dwarf2 cfi generation
Date: Wed, 03 Aug 2011 20:33:00 -0000 [thread overview]
Message-ID: <20110803203247.GB22893@atrey.karlin.mff.cuni.cz> (raw)
In-Reply-To: <4E39AEDB.1080902@redhat.com>
> On 08/03/2011 01:24 PM, Jan Hubicka wrote:
> > Cool, will this also help to handle alternate entry points, so we can move ahead
> > on this area we got stuck years ago? (i.e. add support for alternate entry points on
> > i386 skipping IP pointer load in PIC mode/using register passing conventions)
>
> I honestly don't remember what happened with the alternate entry points.
> But if it was unwind info, then yes, this will help.
Well, as I remember, the basic infrastructure that allowed to introduce alternate entry points
late in the compilation (i.e. during prologue/epilogue generation) is in. We just got stuck precisely
on making it working with the unwind info. (as I recall years back, Ihad patches that allowed us
to skip the IP load in PIC mode and planned to follow with the register calling conventions).
This is the -fPIC patch.
http://web.archiveorange.com/archive/v/iv9U0XRCHosZ5bDh6Z6Q
and this is apparently where we got stuck back then.
http://web.archiveorange.com/archive/v/iv9U0byrEj0gzOKGqTtx
Honza
>
>
> r~
next prev parent reply other threads:[~2011-08-03 20:33 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-14 23:10 Richard Henderson
2011-07-14 23:10 ` [PATCH 4/9] dwarf2cfi: Implement change_cfi_row Richard Henderson
2011-07-14 23:10 ` [PATCH 2/9] dwarf2cfi: Rename cfi_insn to add_cfi_insn Richard Henderson
2011-07-14 23:10 ` [PATCH 6/9] dwarf2cfi: Convert queued_reg_save to a VEC Richard Henderson
2011-07-14 23:10 ` [PATCH 1/9] dwarf2cfi: Introduce a dw_cfi_row state Richard Henderson
2011-07-14 23:10 ` [PATCH 3/9] dwarf2cfi: Populate CUR_ROW->REG_SAVE Richard Henderson
2011-07-14 23:10 ` [PATCH 8/9] dwarf2cfi: Introduce dw_trace_info Richard Henderson
2011-07-14 23:16 ` [PATCH 9/9] dwarf2cfi: Generate and connect traces Richard Henderson
2011-08-06 17:46 ` H.J. Lu
2011-07-14 23:25 ` [PATCH 7/9] dwarf2cfi: Allocate reg_saved_in_data in the heap Richard Henderson
2011-07-15 6:09 ` [PATCH 5/9] dwarf2cfi: Remove dw_cfi_row_ref typedef Richard Henderson
2011-07-15 23:21 ` [RFC PATCH 0/9] CFG aware dwarf2 cfi generation Richard Henderson
2011-07-16 4:09 ` Bernd Schmidt
2011-07-16 6:07 ` Richard Henderson
2011-07-24 8:23 ` Richard Henderson
2011-07-24 8:24 ` Bernd Schmidt
2011-08-03 20:24 ` Jan Hubicka
2011-08-03 20:26 ` Richard Henderson
2011-08-03 20:33 ` Jan Hubicka [this message]
2011-08-04 1:08 ` Andi Kleen
2011-08-04 13:38 ` Jan Hubicka
2011-07-25 3:15 David Edelsohn
2011-07-25 8:46 ` Richard Henderson
2011-07-25 14:23 ` David Edelsohn
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