Re: GCC Cortex-A17, "genattrtab: unknown value `alu_sreg' for `type' attribute"

[Kyrill Tkachov <kyrylo dot tkachov at arm dot com>]

CC'ing gcc-help as it is the proper channel for such discussions

On 17/11/14 23:25, Abhisit Sangjan wrote:
> Hi Kyrylo Tkachov,
>
> Thank so much for your reply  ^_^.
>
> I have one question.
> What is best performance on Cortex-A17? "GCC  4.9.2 + 
> -march=armv7ve -mtune=cortex-a12-mfpu=neon-vfpv4" or "GCC 5.0.0 + your 
> patch + -march=armv7ve -mtune=cortex-a17-mfpu=neon-vfpv4".

That is not easy to answer. It largely depends on your workloads and 
potential improvements or regressions with GCC 5.0 may
be caused by other changes in the compiler that have happened since 4.9.
 I remind you that GCC 5 has not been released yet and is in a 
relatively unstable state at the moment due to stage1 development
having just closed last Saturday.

Kyrill

> Thank you,
> Abhisit.
>
> On Mon, Nov 17, 2014 at 5:36 AM, Kyrill Tkachov 
> <kyrylo.tkachov@arm.com <mailto:kyrylo.tkachov@arm.com>> wrote:
>
>     Hi Abhisit,
>
>     The patch was made for the gcc trunk, not the 4.9.2 codebase. It's
>     not expected to apply there.
>     If accepted this patch will be part of the GCC 5 release.
>     If you want to try it out I suggest you checkout the current gcc
>     trunk and apply it there.
>
>     Cheers,
>     Kyrill
>
>     On 17/11/14 03:12, Abhisit Sangjan wrote:
>
>         Hello Kyrylo Tkachov,
>
>         I am sorry, if I make disturb to you.
>         I create GCC cross compile by GCC 4.9.2 for ARM Cortex-A17, I
>         added your patch - > http://patchwork.ozlabs.org/patch/410511/.
>
>         I got this message "genattrtab: unknown value `alu_sreg' for
>         `type' attribute".
>         Please help me, How can I fix it?
>
>         make[2]: Entering directory `/opt/toolchain/build/gcc-1st/gcc'
>         g++ -c  -DIN_GCC_FRONTEND -g -O2 -DIN_GCC
>         -DCROSS_DIRECTORY_STRUCTURE  -fno-exceptions -fno-rtti
>         -fasynchronous-unwind-tables -W -Wall -Wwrite-strings
>         -Wcast-qual -Wmissing-format-attribute -pedantic
>         -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings 
>          -DHAVE_CONFIG_H -I. -I. -I/opt/toolchain/src/gcc-4.9.2/gcc
>         -I/opt/toolchain/src/gcc-4.9.2/gcc/.
>         -I/opt/toolchain/src/gcc-4.9.2/gcc/../include
>         -I/opt/toolchain/src/gcc-4.9.2/gcc/../libcpp/include
>         -I/opt/toolchain/build/gcc-1st/./gmp
>         -I/opt/toolchain/src/gcc-4.9.2/gmp
>         -I/opt/toolchain/build/gcc-1st/./mpfr
>         -I/opt/toolchain/src/gcc-4.9.2/mpfr
>         -I/opt/toolchain/src/gcc-4.9.2/mpc/src
>         -I/opt/toolchain/src/gcc-4.9.2/gcc/../libdecnumber
>         -I/opt/toolchain/src/gcc-4.9.2/gcc/../libdecnumber/dpd
>         -I../libdecnumber
>         -I/opt/toolchain/src/gcc-4.9.2/gcc/../libbacktrace
>         -DCLOOG_INT_GMP -I/opt/toolchain/build/gcc-1st/./cloog/include
>         -I/opt/toolchain/src/gcc-4.9.2/cloog/include
>         -I/opt/toolchain/src/gcc-4.9.2/cloog/include
>         -I/opt/toolchain/build/gcc-1st/./isl/include
>         -I/opt/toolchain/src/gcc-4.9.2/isl/include  -o glibc-c.o -MT
>         glibc-c.o -MMD -MP -MF ./.deps/glibc-c.TPo
>         /opt/toolchain/src/gcc-4.9.2/gcc/config/glibc-c.c
>         build/genattrtab
>         /opt/toolchain/src/gcc-4.9.2/gcc/config/arm/arm.md
>         <http://arm.md> <http://arm.md> insn-conditions.md
>         <http://insn-conditions.md> <http://insn-conditions.md> \
>                 -Atmp-attrtab.c -Dtmp-dfatab.c -Ltmp-latencytab.c
>         genattrtab: unknown value `alu_sreg' for `type' attribute
>         make[2]: *** [s-attrtab] Error 1
>         make[2]: Leaving directory `/opt/toolchain/build/gcc-1st/gcc'
>         make[1]: *** [all-gcc] Error 2
>         make[1]: Leaving directory `/opt/toolchain/build/gcc-1st'
>         make: *** [all] Error 2
>
>         Thank you,
>         Abhisit.