linux-kernel - Re: [patch] x86: add -freg-struct-return to CFLAGS

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Message-ID: <20070222183557.GC8603@stusta.de>
Date:	Thu, 22 Feb 2007 19:35:57 +0100
From:	Adrian Bunk <bunk@...sta.de>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Jeremy Fitzhardinge <jeremy@...p.org>,
	Arjan van de Ven <arjan@...radead.org>,
	Andi Kleen <ak@....de>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [patch] x86: add -freg-struct-return to CFLAGS

On Thu, Feb 22, 2007 at 09:38:22AM +0100, Ingo Molnar wrote:
>...
> --- linux.orig/arch/i386/Makefile
> +++ linux/arch/i386/Makefile
> @@ -31,7 +31,7 @@ LDFLAGS_vmlinux := --emit-relocs
>  endif
>  CHECKFLAGS	+= -D__i386__
>  
> -CFLAGS += -pipe -msoft-float -mregparm=3
> +CFLAGS += -pipe -msoft-float -mregparm=3 -freg-struct-return
>  
>  # prevent gcc from keeping the stack 16 byte aligned
>  CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2)

Why is this i386 specific?

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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