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From: "Steven J. Hill" <Steven.Hill@imgtec.com>
To: <linux-mips@linux-mips.org>
Cc: Ralf Baechle <ralf@linux-mips.org>,
	"Maciej W . Rozycki" <macro@linux-mips.org>
Subject: Re: [PATCH] MIPS: Reduce kernel binary size.
Date: Fri, 28 Jun 2013 16:29:30 -0500	[thread overview]
Message-ID: <51CE003A.5040902@imgtec.com> (raw)
In-Reply-To: <1372454107-7784-1-git-send-email-Steven.Hill@imgtec.com>

Ralf,

Take note of the addition of '#ifdef CONFIG_SYS_HAS_CPU_R10000' around 
the 'cpu_is_noncoherent_r10000' and empty inline function if we're not 
one of the SGI platforms. Without the the empty inline function, I get 
an internal compiler compiler error. It results from the new 
'current_cpu_type()' function you added. Essentially two functions are 
going to get optimized out. The compiler does not seem to complete that 
successfully. Here is the message:

   CC      arch/mips/mm/dma-default.o
arch/mips/mm/dma-default.c: In function 'mips_dma_sync_sg_for_cpu':
arch/mips/mm/dma-default.c:320:1: internal compiler error: in 
add_insn_before, at emit-rtl.c:3852

Maciej, what are we dealing with here? Thanks.

-Steve

WARNING: multiple messages have this Message-ID (diff)
From: "Steven J. Hill" <Steven.Hill@imgtec.com>
To: linux-mips@linux-mips.org
Cc: Ralf Baechle <ralf@linux-mips.org>,
	"Maciej W . Rozycki" <macro@linux-mips.org>
Subject: Re: [PATCH] MIPS: Reduce kernel binary size.
Date: Fri, 28 Jun 2013 16:29:30 -0500	[thread overview]
Message-ID: <51CE003A.5040902@imgtec.com> (raw)
Message-ID: <20130628212930.QyiBSu3GRHjhPG1t1ycFPpJ7lDVejcrMGNNZMK0bdjQ@z> (raw)
In-Reply-To: <1372454107-7784-1-git-send-email-Steven.Hill@imgtec.com>

Ralf,

Take note of the addition of '#ifdef CONFIG_SYS_HAS_CPU_R10000' around 
the 'cpu_is_noncoherent_r10000' and empty inline function if we're not 
one of the SGI platforms. Without the the empty inline function, I get 
an internal compiler compiler error. It results from the new 
'current_cpu_type()' function you added. Essentially two functions are 
going to get optimized out. The compiler does not seem to complete that 
successfully. Here is the message:

   CC      arch/mips/mm/dma-default.o
arch/mips/mm/dma-default.c: In function 'mips_dma_sync_sg_for_cpu':
arch/mips/mm/dma-default.c:320:1: internal compiler error: in 
add_insn_before, at emit-rtl.c:3852

Maciej, what are we dealing with here? Thanks.

-Steve

  reply	other threads:[~2013-06-28 21:31 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-06-28 21:15 [PATCH] MIPS: Reduce kernel binary size Steven J. Hill
2013-06-28 21:29 ` Steven J. Hill [this message]
2013-06-28 21:29   ` Steven J. Hill
2013-06-28 22:31 ` Jonas Gorski

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