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I'm getting following errors while cross compiling llvm for ARM. Please help since it is urgent and critical My gcc version is 4.2.0, 32bit Linux and target is ARM Configure options are: ./configure --host=i686-pc-linux-gnu --build=i686-pc-linux-gnu --target=armv7fl-montavista-linux-gnueabi --enable-cross --with-sysroot=/home//arm_v7_vfp_le/target/ --with-build-sysroot=/home//arm_v7_vfp_le/target/ --enable-shared --enable-languages=c,c++ --with-as=/home//arm_v7_vfp_le/bin/arm_v7_vfp_le-as --with-ld=/home//arm_v7_vfp_le/bin/arm_v7_vfp_le-ld --enable-checking=r...

On 2010-06-04 13:41, Sanjeev C wrote: > I get following errors: > > /home/llvm-gcc-4.2-2.7.source/host-i686-pc-linux-gnu/gcc/xgcc > -B/home/llvm-gcc-4.2-2.7.source/host-i686-pc-linux-gnu/gcc/ > -B/usr/local/armv7fl-montavista-linux-gnueabi/bin/ > -B/usr/local/armv7fl-montavista-linux-gnueabi/lib/ -isystem > /usr/local/armv7fl-montavista-linux-gnueabi/include -isystem > /usr/local/armv7fl-montavista-linux-gnueabi/sys-include -DHAVE_CONFIG_H -I. > -I../.././libmudflap -I. -Wall -ffunction-sections -...

This is the full description of errors I am getting /home/llvm-gcc-4.2-2.7.source/host-i686-pc-linux-gnu/gcc/xgcc -B/home/llvm-gcc-4.2-2.7.source/host-i686-pc-linux-gnu/gcc/ -B/usr/local/armv7fl-montavista-linux-gnueabi/bin/ -B/usr/local/armv7fl-montavista-linux-gnueabi/lib/ -isystem /usr/local/armv7fl-montavista-linux-gnueabi/include -isystem /usr/local/armv7fl-montavista-linux-gnueabi/sys-include -DHAVE_CONFIG_H -I. -I../.././libmudflap -I. -Wall -ffunction-sections -fdata-sections -O2 -...

...ents on llvm+arm and this time it's performance was 3x better than native ARM. Can you guys please suggest what could be there in this graphics component which is not allowing the performance to improve for ARM+llvm. cross-compiler has been built with these flags Using built-in specs. Target: armv7fl-montavista-linux-gnueabi Configured with: ./configure --host=i686-pc-linux-gnu --build=i686-pc-linux-gnu --target=armv7fl-montavista-linux-gnueabi --enable-cross --with-sysroot=/home/arm_v7_vfp_le/target/ --with-build-sysroot=/home/arm_v7_vfp_le/target/ --enable-shared --enable-languages=c,c++ --wi...

Hello > /tmp/cczBL31y.s:409: rdhi, rdlo and rm must all be different This is binutils bug fixed ~2 years ago: http://sourceware.org/ml/binutils/2007-11/msg00046.html Make sure you're using the latest binutils for ARM (from binutils CVS) -- With best regards, Anton Korobeynikov Faculty of Mathematics and Mechanics, Saint Petersburg State University

...s performance was 3x better > than native ARM. Can you guys please suggest what could be there in this > graphics component which is not allowing the performance to improve for > ARM+llvm. > > cross-compiler has been built with these flags > > Using built-in specs. > Target: armv7fl-montavista-linux-gnueabi > Configured with: ./configure --host=i686-pc-linux-gnu > --build=i686-pc-linux-gnu --target=armv7fl-montavista-linux-gnueabi > --enable-cross --with-sysroot=/home/arm_v7_vfp_le/target/ > --with-build-sysroot=/home/arm_v7_vfp_le/target/ --enable-shared > --en...

...r a .a. c) 'llc' to turn your combined .bc into a .s d) 'as' to turn your .s into a .o I followed instructions from web page. http://llvm.org/docs/GoldPlugin.html I configured linker with these paramters. ../src/configure --host=i686-pc-linux-gpu --build=i686-pc-linux-gpu --target=armv7fl-montavista-linux-gnueabi --enable-gold --enable-plugins --enable-lto --with-cpu=cortex-a8 --with-interwork --with-arch=armv7-a --with-mode=arm --with-tune=cortex-a8 --with-fpu=vfp3 Did a make then. But the code generated with ld-new is intel binary and not a ARM binary :( I did arm_v7_vfp-le a.c...

my g++-cross was configured with following parameters: ./configure --host=i686-pc-linux-gnu --build=i686-pc-linux-gnu --target=armv7fl-montavista-linux-gnueabi --enable-cross --with-sysroot=/home/arm_v7_vfp_le/target/ --with-build-sysroot=/home/arm_v7_vfp_le/target/ --enable-shared --enable-languages=c,c++ --with-as=/home/arm_v7_vfp_le/bin/arm_v7_vfp_le-as --with-ld=/home/arm_v7_vfp_le/bin/arm_v7_vfp_le-ld --enable-checking=releas...

Hello > a) 'llvm-gcc -c -flo -O2' to generate the .bc files. How llvm-gcc was configured & compiled? With best regards, Anton Korobeynikov Faculty of Mathematics and Mechanics, Saint Petersburg State University

> exactly Well, in general, there is no connection between the performance on x86 and on ARM. You can try to profile your code and find what causes the speedup on x86 and figure out the slowdowns on ARM. -- With best regards, Anton Korobeynikov Faculty of Mathematics and Mechanics, Saint Petersburg State University