[LLVMdev] problems compiling gcc frontend: Error: bad register name `%rbp'

[robert muth]

I have problem compiling the gcc frontend.
Almost everything seems to compile but at the very end
when crt startup files are compiled, the assembler complains
about bad registers.
Any idea what I am doing wrong?
Thanks,
Robert


HOST:
os: ubuntu 2.6.18 kernel  x86_64 GNU/Linux
compiler:            gcc (GCC) 4.0.3 (Ubuntu 4.0.3-1ubuntu5)

SOURCE:
svn trunk  gcc4.2

CONFIGURE:
../llvm-gcc-svn/configure --prefix=/home/robertm/Projects/llvm/
--enable-llvm=$PWD/../llvm-objects --disable-shared
--enable-languages=c

SAMPLE ERROR:
/home/robertm/Projects/llvm/llvm-gcc-objects/./gcc/xgcc
-B/home/robertm/Projects/llvm/llvm-gcc-objects/./gcc/
-B/home/robertm/Projects/llvm/export/x86_64-unknown-linux-gnu/bin/
-B/home/robertm/Projects/llvm/export/x86_64-unknown-linux-gnu/lib/
-isystem /home/robertm/Projects/llvm/export/x86_64-unknown-linux-gnu/include
-isystem /home/robertm/Projects/llvm/export/x86_64-unknown-linux-gnu/sys-include
-O2 -O2 -g -O2  -DIN_GCC    -W -Wall -Wwrite-strings
-Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition
-isystem ./include  -I. -I. -I../../llvm-gcc-svn/gcc
-I../../llvm-gcc-svn/gcc/. -I../../llvm-gcc-svn/gcc/../include
-I../../llvm-gcc-svn/gcc/../libcpp/include
-I../../llvm-gcc-svn/gcc/../libdecnumber -I../libdecnumber
-I/home/robertm/Projects/llvm/llvm-gcc-objects/../llvm-objects/include
-I/home/robertm/Projects/llvm/llvm-svn/include  -g0
-finhibit-size-directive -fno-inline-functions -fno-exceptions
-fno-zero-initialized-in-bss -fno-toplevel-reorder
-fno-omit-frame-pointer -fno-asynchronous-unwind-tables \
          -c ../../llvm-gcc-svn/gcc/crtstuff.c -DCRT_BEGIN \
          -o crtbegin.o
/tmp/ccW2TMKx.s: Assembler messages:
/tmp/ccW2TMKx.s:15: Error: bad register name `%rbp'
/tmp/ccW2TMKx.s:16: Error: bad register name `%rsp'
/tmp/ccW2TMKx.s:22: Error: bad register name `%rax'
/tmp/ccW2TMKx.s:23: Error: bad register name `%rax)'
/tmp/ccW2TMKx.s:24: Error: bad register name `%rcx'
/tmp/ccW2TMKx.s:29: Error: bad register name `%rbp'
/tmp/ccW2TMKx.s:32: Error: bad register name `%rax'
/tmp/ccW2TMKx.s:33: Error: bad register name `%rax'
/tmp/ccW2TMKx.s:34: Error: bad register name `%rcx'
/tmp/ccW2TMKx.s:42: Error: bad register name `%rbp'
/tmp/ccW2TMKx.s:43: Error: bad register name `%rsp'
/tmp/ccW2TMKx.s:44: Error: suffix or operands invalid for `cmp'
/tmp/ccW2TMKx.s:47: Error: bad register name `%rax'
/tmp/ccW2TMKx.s:50: Error: bad register name `%rax'
/tmp/ccW2TMKx.s:53: Error: bad register name `%rdi'
/tmp/ccW2TMKx.s:54: Error: bad register name `%rax'
/tmp/ccW2TMKx.s:56: Error: bad register name `%rbp'
make[3]: *** [crtbegin.o] Error 1