Re: gcc4.4.1 related doubt

[trisha yad <trisha1march at gmail dot com>]

thanks for your reply


I am attaching one sample program.

1. arm-linux-gnueabi-gcc -fno-optimize-sibling-calls -O0 test.c
2. arm-linux-gnueabi-gcc -fno-optimize-sibling-calls -O2 test.c
arm-linux-gnueabi-nm of O0 is log1
arm-linux-gnueabi-nm of O2 is log


I am attaching o/p of command using option --save-temps i.e in file test.s
arm-linux-gnueabi-gcc -fno-optimize-sibling-calls --save-temps -O2 test.c

arm-linux-gnueabi-as -v
GNU assembler version 2.19.51 (arm-linux-gnueabi) using BFD version
(Sourcery G++ Lite 2009q1-203) 2.19.51.20090205

_-----------------------------------------------------------------------------------------------------------------------------
arm-linux-gnueabi-gcc -v
Using built-in specs.
Target: arm-linux-gnueabi
Configured with:
/scratch/mitchell/builds/4.4-arm-linux-gnueabi-respin/src/gcc-4.4/configure
--build=i686-pc-linux-gnu --host=i686-pc-linux-gnu
--target=arm-linux-gnueabi --enable-threads --disable-libmudflap
--disable-libssp --enable-extra-sgxxlite-multilibs
--disable-libstdcxx-pch --with-gnu-as --with-gnu-ld
--with-specs='%{funwind-tables|fno-unwind-tables|mabi=*|ffreestanding|nostdlib:;:-funwind-tables}'
--enable-languages=c,c++ --enable-shared --enable-symvers=gnu
--enable-__cxa_atexit --with-pkgversion='Sourcery G++ Lite 2009q1-203'
--with-bugurl=https://support.codesourcery.com/GNUToolchain/
--disable-nls --prefix=/opt/codesourcery
--with-sysroot=/opt/codesourcery/arm-linux-gnueabi/libc
--with-build-sysroot=/scratch/mitchell/builds/4.4-arm-linux-gnueabi-respin/lite/install/arm-linux-gnueabi/libc
--with-gmp=/scratch/mitchell/builds/4.4-arm-linux-gnueabi-respin/lite/obj/host-libs-2009q1-203-arm-linux-gnueabi-i686-pc-linux-gnu/usr
--with-mpfr=/scratch/mitchell/builds/4.4-arm-linux-gnueabi-respin/lite/obj/host-libs-2009q1-203-arm-linux-gnueabi-i686-pc-linux-gnu/usr
--disable-libgomp --enable-poison-system-directories
--with-build-time-tools=/scratch/mitchell/builds/4.4-arm-linux-gnueabi-respin/lite/install/arm-linux-gnueabi/bin
--with-build-time-tools=/scratch/mitchell/builds/4.4-arm-linux-gnueabi-respin/lite/install/arm-linux-gnueabi/bin
--with-interwork --with-cpu=cortex-a9 --with-arch=armv7-a
--with-mode=arm --with-tune=cortex-a9 --with-fpu=vfp3
--with-float=softfp
Thread model: posix
gcc version 4.4.1 (Sourcery G++ Lite 2009q1-203)
--------------------------------------------------------------------------------------------------------------------------------------


On Thu, Mar 25, 2010 at 7:21 PM, Ian Lance Taylor <iant@google.com> wrote:
> trisha yad <trisha1march@gmail.com> writes:
>
>> I am sending you simple test program.
>>
>> I run following command
>> arm-linux-gnueabi-gcc ?--save-temps ?-O0 ?main.c
>> arm-linux-gnueabi-gcc ?--save-temps ?-O2 ?main.c (Function name disappear)
>
> Please reply to the mailing list, not just to me. ?Thanks.
>
> I don't see any T. symbols in the assembly files that you sent.
> Presumably the assembler is inserting these symbols. ?Although, when I
> ran a recent version of gas, it did not do so. ?What assembler are you
> using?
>
> I would guess that these are ARM mapping symbols. ?Why are they a
> problem?
>
> Ian
>

Attachment: test.c
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Attachment: log
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Attachment: log1
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Attachment: test.s
Description: Binary data

Attachment: test.o
Description: Binary data