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

[Chris Lattner]

On Mon, 8 Oct 2007, Evan Cheng wrote:
>> [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.

Evan, are you "3 addrifying" 32-bit adds into a 32-bit LEA on x86-64? 
Could this be the problem? (iirc, it wants you to use eax = LEA rsi, rdi)

-Chris

>> 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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-Chris

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