Date:	Mon, 23 Sep 2013 14:12:39 +0800
From:	Chen Gang <gang.chen@...anux.com>
To:	"vgupta@...opsys.com" <vgupta@...opsys.com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [Suggestion] arc: compiler: bug: about an arc compiler's bug
 which is not in gcc main source code.


Oh, I forgot to supply the related arc cross-compiler's information:

[root@...p122 linux-next]# /usr/local/bin/arc-elf32-gcc -v
Using built-in specs.
Target: arc-elf32
Configured with: /mnt/sda11/src/toolchain_arc/unisrc/configure --target=arc-elf32 --with-cpu=arc700 --disable-werror --disable-multilib --with-pkgversion='ARCompact elf32 toolchain (built 20130922)' --with-bugurl=http://solvnet.synopsys.com --enable-fast-install=N/A --enable-languages=c,c++ --prefix=/usr/local --with-headers=/mnt/sda11/src/toolchain_arc/unisrc/newlib/libc/include
Thread model: single
gcc version 4.4.7 (ARCompact elf32 toolchain (built 20130922)) 

[root@...p122 linux-next]# /usr/local/bin/arc-elf32-as -v
GNU assembler version 2.19.50.ARC_4.4 (arc-elf32) using BFD version (ARCompact elf32 toolchain (built 20130922)) 2.19.50.ARC_4.4.20081103

[root@...p122 linux-next]# /usr/local/bin/arc-elf32-ld -v
GNU ld (ARCompact elf32 toolchain (built 20130922)) 2.19.50.ARC_4.4.20081103


On 09/23/2013 02:04 PM, Chen Gang wrote:
> Hello arc members:
> 
> It is arc compiler's bug, but can not report to gnu tool chain (it is
> not integrated into gnu tool chain), so have to report it here (I find
> this bug here, and I guess, some arc folks are here, too).
> 
> 
> In "drivers/power/wm831x_power.c", all wm831x_bat_get_prop() calling
> functions are inline, so wm831x_bat_get_prop() size is more than 256,
> but it uses 1 byte to express related offset (".byte .L61-.L65 + 6").
> 
> If let some of wm831x_bat_get_prop() calling functions noinline, it can
> pass compiling.
> 
> The related .s file is in attachment, and the related command and error
> (for next-20130920 tree) is below:
> 
>     /usr/local/bin/arc-elf32-gcc -Wp,-MD,drivers/power/.wm831x_power.o.d  -nostdinc -isystem /usr/local/lib/gcc/arc-elf32/4.4.7/include -I/root/linux-next/arch/arc/include -Iarch/arc/include/generated  -Iinclude -I/root/linux-next/arch/arc/include/uapi -Iarch/arc/include/generated/uapi -I/root/linux-next/include/uapi -Iinclude/generated/uapi -include /root/linux-next/include/linux/kconfig.h -include /root/linux-next/arch/arc/include/asm/current.h -D__KERNEL__ -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -Werror-implicit-function-declaration -Wno-format-security -fno-delete-null-pointer-checks -Os -mA7 -fno-common -pipe -fno-builtin -D__linux__ -fsection-anchors -mlock -mswape -mrtsc -fasynchronous-unwind-tables -mno-sdata -fcall-used-gp -mbig-endian -multcost=16 -fno-reorder-blocks -fno-ipa-cp-clone -Wframe-larger-than=1024 -fno-stack-protector -fomit-frame-pointer -g -femit-struct-debug-baseonly -fno-var-tracking -fno-inline-functions-c
 alled-onc
e 
> -Wdeclaration-after-statement -Wno-pointer-sign -fno-strict-overflow -fconserve-stack -Werror=implicit-int -Werror=strict-prototypes -DDEBUG   -DMODULE -mlong-calls  -D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(wm831x_power)"  -D"KBUILD_MODNAME=KBUILD_STR(wm831x_power)" -c -o drivers/power/.tmp_wm831x_power.o drivers/power/wm831x_power.c
>   {standard input}: Assembler messages:
>   {standard input}:934: Error: value of 256 too large for field of 1 bytes at 1987
> 
> 
> Welcome any suggestions or completions (e.g. which location and members
> this bug should be reported to).
> 
> Thanks.
> 


-- 
Chen Gang
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