linux-kernel - Re: [PATCH RFC 1/2] Makefile: Never use -fno-omit-frame-pointer

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Message-Id: <5D56FC27-95F2-4A9A-8955-C6D2A9BC4661@kernel.crashing.org>
Date:	Tue, 14 Jul 2009 15:46:51 +0200
From:	Segher Boessenkool <segher@...nel.crashing.org>
To:	avorontsov@...mvista.com
Cc:	Ingo Molnar <mingo@...e.hu>, linuxppc-dev@...abs.org,
	Steven Rostedt <srostedt@...hat.com>,
	Sam Ravnborg <sam@...nborg.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH RFC 1/2] Makefile: Never use -fno-omit-frame-pointer

[Sorry for not replying earlier, somehow I missed this mail]

>> On the other hand, *using* -fno-omit-frame-pointer causes gcc to
>> produce buggy code on PowerPC targets.

It doesn't cause the problem, it only exposes it.  And, of course,
only on certain GCC versions.

>> Segher, do you know if all GCC versions that we support for
>> building Linux are behaving the way that GCC manual describe?

I believe so, yes.


Segher

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