llvm dev - Jan 2012 - [LLVMdev] dragonegg arm patch

Hi Duncan,



I made a patch for dragonegg. This patch is for dragonegg to generate arm
assembly code.

Dragonegg is compiled with this patch after building gcc-4.6 as cross compiler
for arm and

then dragonegg can generate arm assembly code.



It currently makes errors to build dragonegg and llvm from svn. so I made a
patch using

dragonegg-3.0 source code. (This patch doesn't support TargetInstrinsic
lowering as

compared with llvm-gcc.4.2)



If you allow this patch, I will commit this patch.

(May be, I will commit two directory "include/arm" and
"src/arm". because I don't know

why "CC" is commented.)



Please review this patch.



Thanks,

Jin-Gu Kang
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Hi Jin-Gu,
> I made a patch for dragonegg. This patch is for dragonegg to generate arm
> assembly code.
thanks for working on this.
>
> Dragonegg is compiled with this patch after building gcc-4.6 as cross
compiler
> for arm and
>
> then dragonegg can generate arm assembly code.
>
> It currently makes errors to build dragonegg and llvm from svn. so I made a
> patch using
>
> dragonegg-3.0 source code. (This patch doesn't support TargetInstrinsic
lowering as
>
> compared with llvm-gcc.4.2 )
>
> If you allow this patch, I will commit this patch.
I applied a fix for decode_reg_name.  CallingConv::ID is just an integer, as
such returning it by reference makes no sense.  It was a silliness in the
llvm-gcc code and I don't want to reintroduce it, so those bits are no good.
I will try to build an ARM cross-compiler here to understand the rest better.
This might take a few days.

Ciao, Duncan.
>
> (May be, I will commit two directory "include/arm" and
"src/arm". because I
> don't know
>
> why "CC" is commented. )
>
> Please review this patch.
>
> Thanks,
>
> Jin-Gu Kang
>

Hi Duncan,

I appreciate your kind review.

I'd like to help you to build an ARM cross compiler.

I built GCC as following.

1. Download
"arm-2010.09-50-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.bz2"
You can find this file on
https://sourcery.mentor.com/sgpp/lite/arm/portal/release1600.
(Please click "IA32 GNU/Linux TAR" on Packages.)

2. Extract this file on your linux machine.

3. Add "bin" directory of extracted file to PATH.
(ex: PATH=$PATH:"/home/jaykang10/Projects/ARM/arm-2010.09/bin)

4. configure gcc-4.6 as following. (I used gcc-4.6.2)
"source directory"/configure --prefix="install directory"
 --target="ARM target"
 --with-gnu-as="ARM assembler"
 --with-gnu-ld="ARM linker"
 --with-sysroot="directory to condiser as root filesystem"
 --with-arch="ARM arch"
 --enable-languages="languages"

Extracted arm-2010.09 toolchain is used for --with-gnu-as, --with-gnu-ld and
 --with-sysroot options.
For example,
../../src/gcc-4.6.2/configure
--prefix=/home/jaykang10/Projects/dragonegg/bin/gcc-4.6/
 --target=arm-none-linux-gnueabi 
 --with-gnu-as=/home/jaykang10/Projects/ARM/arm-2010.09/bin/arm-none-linux-gnueabi-as
 --with-gnu-ld=/home/jaykang10/Projects/ARM/arm-2010.09/bin/arm-none-linux-gnueabi-ld
 --with-sysroot=/home/jaykang10/Projects/ARM/arm-2010.09/arm-none-linux-gnueabi/libc
 --with-arch=armv6
 --enable-languages=c,c++

5. make and make intall

I will modify code to use CallingConv::ID as integer.

Thanks for your kind review,
Jin-Gu Kang

Hi Duncan,

I send a modified patch which doesn't use reference type of CallingConv::ID.

Thanks,
Jin-Gu Kang
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