From: Iain Sandoe <developer@sandoe-acoustics.co.uk>
To: Richard Henderson <rth@redhat.com>
Cc: GCC Patches <gcc-patches@gcc.gnu.org>,
Bernd Schmidt <bernds@codesourcery.com>
Subject: Re: [CFT][PATCH 0/6] Move dwarf2 cfi creation to a new pass
Date: Thu, 07 Jul 2011 08:10:00 -0000 [thread overview]
Message-ID: <D2B39406-C1BD-465D-97C9-C829733DDF8B@sandoe-acoustics.co.uk> (raw)
In-Reply-To: <4E14EC99.40607@codesourcery.com>
On 7 Jul 2011, at 00:15, Bernd Schmidt wrote:
> On 07/03/11 22:01, Richard Henderson wrote:
>> Bernd's original patch to optimize dwarf2 cfi for shrink-wrapping
>> is difficult to analyze because that optimization was done via a
>> random debugging hook during final, and the cfi notes are deleted
>> at the end of final so that we don't get debug comparison failures.
>>
>> By pulling the note creation out to a separate pass, we can dump
>> the notes and thus debug the optimization.
>>
>> So far I've tested this only on x86_64-linux. It needs a bit more
>> testing across other targets before going in. Any help that can
>> be given there would be welcome.
>
> I'm trying to help by running ARM tests, but I've managed to screw
> up by
> running out of disk space, so I'm starting again from scratch now.
I've run once through on i686-darwin9 (on the basis that it should
make no difference, that seems to be the case).
I still need to figure out a way to suppress DW2 epilogue info in
unwind frames (for Darwin variants that can't handle them) ...
... will try and merge my patch-in-progress with your changes.
Iain
next prev parent reply other threads:[~2011-07-07 8:07 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-03 20:03 Richard Henderson
2011-07-03 20:03 ` [PATCH 2/6] dwarf2out: Move insn scanning out of final.c Richard Henderson
2011-07-03 20:03 ` [PATCH 3/6] dwarf2out: Emit NOTE_INSN_CFI_* both with and without cfi-asm Richard Henderson
2011-07-03 20:03 ` [PATCH 5/6] dwarf2: Extract cfi creation to a new pass Richard Henderson
2011-07-03 20:03 ` [PATCH 4/6] dwarf2out: Convert fde_table to a VEC Richard Henderson
2011-07-03 20:03 ` [PATCH 6/6] Dump NOTE_INSN_CFI notes Richard Henderson
2011-07-03 20:04 ` [PATCH 1/6] dwarf2out: Split CFI construction routines into a new file Richard Henderson
2011-07-06 23:23 ` [CFT][PATCH 0/6] Move dwarf2 cfi creation to a new pass Bernd Schmidt
2011-07-07 8:10 ` Iain Sandoe [this message]
2011-07-08 2:32 ` Richard Henderson
2011-07-07 21:51 ` Bernd Schmidt
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