[yocto] [PATCH 1/1] beagleboard.conf: set DEFAULT_TUNE to cortexa8

[Martin Jansa]

On Tue, Aug 23, 2011 at 02:26:06PM -0700, Saul Wold wrote:
> On 08/23/2011 12:35 PM, Tom Rini wrote:
> > On Tue, Aug 23, 2011 at 1:36 PM, Saul Wold<sgw at linux.intel.com>  wrote:
> >>     [YOCTO #1381]
> >>
> >>     lttng-ust generates an ICE when building for armv7, so change it to armv5
> >>     | vfprintf.c:956:1: error: unrecognizable insn:
> >>     | (insn 3968 3967 3969 145 (set (subreg:SI (reg/v:DI 160 [ _umax ]) 0)
> >>     |         (sign_extend:SI (mem:QI (plus:SI (mult:SI (reg/v:SI 166 [ nextarg ])
> >>     |                         (const_int 8 [0x8]))
> >>     |                     (reg/f:SI 370 [ argtable.7 ])) [0 *D.6937_569+0 S1
> >>     A32]))) vfprintf.c:555 -1
> >>     |      (nil))
> >>     | vfprintf.c:956:1: internal compiler error: in extract_insn, at recog.c:2109
> >
> > Which version of lttng-ust is this exactly?  In addition to what
> > Darren is saying about how this should be papered-over at the recipe
> > level until gcc itself is fixed...
> >
> Sorry, this was my mis-understanding of Darren's comment.
> 
> Version of lttng-ust is 0.15.
> 
> Initially I tried to do something with tcmode-default, setting lttng-ust 
> similar to meta-xlib which also had a ICE issue.
> 
> TARGET_CC_ARCH_arm_pn-mesa-xlib := 
> "${@'${TARGET_CC_ARCH}'.replace('armv7-a','armv5')}"
> 
> That caused the compiler to complain about a mode issue, probably due to 
> mixing of tune parameters:
> 
> | arm-poky-linux-gnueabi-libtool: compile:  ccache 
> arm-poky-linux-gnueabi-gcc
> -march=armv5 -fno-tree-vectorize -mthumb-interwork -mfloat-abi=softfp
> -mfpu=neon -mtune=cortex-a8
> --sysroot=/vol/1/sgw/autobuilder/yab/yocto-slave/external/build/build/tmp/sysroots/beagleboard
> -DHAVE_CONFIG_H -I. -I.. -I../include/ust -I../include -I../libustcomm
> -DUST_COMPONENT=libust -fno-strict-aliasing -Wall -pipe -g
> -feliminate-unused-debug-types -MT libust_la-marker-control.lo -MD -MP -MF
> .deps/libust_la-marker-control.Tpo -c marker-control.c -o
> libust_la-marker-control.o >/dev/null 2>&1
> | mv -f .deps/libust_la-tracercore.Tpo .deps/libust_la-tracercore.Plo
> | {standard input}: Assembler messages:
> | {standard input}:190: Error: selected processor does not support ARM 
> mode `dmb'
> 
> Yes, we are trying to solve Compiler issue, when I first started working 
> on the last week there was not a compiler bug filed, but now there seems 
> to be one!
> 
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43137
> 
> Which looks like it is resolved also!

This is better bug report:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50099

Regards,

> I will move this to Nitin to see if he can incorporate the patch into gcc.
> 
> Sau!
> 
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> yocto at yoctoproject.org
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-- 
Martin 'JaMa' Jansa     jabber: Martin.Jansa at gmail.com
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