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Re: GCC-3.4 reorders asm() with -O2

To: Andi Kleen <ak@suse.de>, Jan Hubicka <jh@suse.cz>, echristo@redhat.com, hubicka@ucw.cz, eager@mvista.com, gcc@gcc.gnu.org, linux-mips@linux-mips.org
Subject: Re: GCC-3.4 reorders asm() with -O2
From: Ralf Baechle <ralf@linux-mips.org>
Date: Sun, 25 Jan 2004 19:26:43 +0100
In-reply-to: <20040125170351.GA10938@nevyn.them.org>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <4011C72C.613E25@mvista.com> <20040124011955.GA12040@nevyn.them.org> <20040124012303.GJ32288@atrey.karlin.mff.cuni.cz> <20040124050849.GB14951@nevyn.them.org> <1075009125.3649.0.camel@dzur.sfbay.redhat.com> <20040125100514.GA8810@kam.mff.cuni.cz> <20040125164758.79373419.ak@suse.de> <20040125170351.GA10938@nevyn.them.org>
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On Sun, Jan 25, 2004 at 12:03:51PM -0500, Daniel Jacobowitz wrote:

> It is.  Ralf already knows about the problem, I think - we leave
> markers outside of functions which define an entry point, save some
> additional registers to the stack, and try to fall through to the
> following function.  If the function gets emitted elsewhere, obviously,
> we've lost :)
> 
> [This is save_static_function...]

I only recently fixed the problem with the save_static() inline function
which of course was fragile, speculating on the compiler doing the
right thing ...  I'll cook up a fix ...

  Ralf

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