[LLVMdev] Can't bootstrap llvm-gcc-4.0 for x84_64

[Evan Cheng]

On Oct 8, 2007, at 12:50 PM, David Greene wrote:

> I've been unable to bootstrap llvm-gcc-4.0 or -4.2 for x86_64
> for some weeks now.  The current problem is this:
>
> [x86_64-mod-dbg]: ./xgcc -B./
> -B/install.modified.debug/x86_64-unknown-linux-gnu/x86_64-unknown- 
> linux-gnu/bin/
> -isystem /install.modified.debug/x86_64-unknown-linux-gnu/x86_64- 
> unknown-linux-gnu/include
> -isystem /install.modified.debug/x86_64-unknown-linux-gnu/x86_64- 
> unknown-linux-gnu/sys-include
> -L/tmp/ptmp/dag/build.llvm-gcc-4.0.modified.debug/x86_64-unknown- 
> linux-gnu/gcc/../ld
> -O2  -DIN_GCC    -W -Wall -Wwrite-strings -Wstrict-prototypes
> -Wmissing-prototypes -Wold-style-definition  -isystem ./include  - 
> fPIC -g
> -DHAVE_GTHR_DEFAULT -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED  -I. -I.
> -I/llvm-project.modified/llvm-gcc-4.0/trunk/gcc
> -I/llvm-project.modified/llvm-gcc-4.0/trunk/gcc/.
> -I/llvm-project.modified/llvm-gcc-4.0/trunk/gcc/../include
> -I/llvm-project.modified/llvm-gcc-4.0/trunk/gcc/../libcpp/include
> -I/llvm-project.modified/llvm/trunk/include
> -I/ptmp/dag/build.llvm.modified.debug/x86_64-unknown-linux-gnu/include
> -DL_addvsi3 -c /llvm-project.modified/llvm-gcc-4.0/trunk/gcc/ 
> libgcc2.c -o
> libgcc/./_addvsi3.o
> [x86_64-mod-dbg]: /tmp/ccxekXCc.s: Assembler messages:
> [x86_64-mod-dbg]: /tmp/ccxekXCc.s:36: Error: `(%esi,%edi)' is not a  
> valid 64
> bit base/index expression

Looks like llvm is generating invalid x86-64 assembly. Can you add a - 
emit-llvm to the xgcc line and generate a reproducible test case?  
Please file a bugzilla report.

Thanks,

Evan

>
>
> I also see warnings like this:
>
> [x86_64-mod-dbg]: ./xgcc -B./
> -B/install.modified.debug/x86_64-unknown-linux-gnu/x86_64-unknown- 
> linux-gnu/bin/
> -isystem /install.modified.debug/x86_64-unknown-linux-gnu/x86_64- 
> unknown-linux-gnu/include
> -isystem /install.modified.debug/x86_64-unknown-linux-gnu/x86_64- 
> unknown-linux-gnu/sys-include
> -L/tmp/ptmp/dag/build.llvm-gcc-4.0.modified.debug/x86_64-unknown- 
> linux-gnu/gcc/../ld
> -O2  -DIN_GCC    -W -Wall -Wwrite-strings -Wstrict-prototypes
> -Wmissing-prototypes -Wold-style-definition  -isystem ./include  - 
> fPIC -g
> -DHAVE_GTHR_DEFAULT -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED  -I. -I.
> -I/llvm-project.modified/llvm-gcc-4.0/trunk/gcc
> -I/llvm-project.modified/llvm-gcc-4.0/trunk/gcc/.
> -I/llvm-project.modified/llvm-gcc-4.0/trunk/gcc/../include
> -I/llvm-project.modified/llvm-gcc-4.0/trunk/gcc/../libcpp/include
> -I/llvm-project.modified/llvm/trunk/include
> -I/ptmp/dag/build.llvm.modified.debug/x86_64-unknown-linux-gnu/include
> -DL_absvdi2 -c /llvm-project.modified/llvm-gcc-4.0/trunk/gcc/ 
> libgcc2.c -o
> libgcc/./_absvdi2.o
> [x86_64-mod-dbg]: WARNING: 128-bit integers not supported!
>
> This is from the latest trunk.  Is anyone else seeing this problem?
>
>                                                -Dave
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