llvm dev - Jul 2006 - [LLVMdev] Hello World crashes!

Hi,

Sorry for the newbie question. I downloaded llvm and tried out the
simple "Hello, World" program but got the following error. What am I
missing? I am running RHAS 3 Update 4 with GCC 3.2.3.

Thanks,

Bharadwaj

$ ./hello
lli:
/home/proj/skokomish/syadaval/ia32/Sandbox/llvm/lib/Target/X86/X86CodeEmitter.cpp:208:
unsigned char ModRMByte(unsigned int, unsigned int, unsigned int):
Assertion `Mod < 4 && RegOpcode < 8 && RM < 8
&& "ModRM Fields out of
range!"' failed.
lli((anonymous namespace)::PrintStackTrace()+0x15)[0x84ab499]
/lib/tls/libc.so.6[0x3d7ec8]
/lib/tls/libc.so.6(abort+0x15)[0x3d94f5]
/lib/tls/libc.so.6[0x3d1619]
lli((anonymous namespace)::Emitter::emitMemModRMByte(llvm::MachineInstr
const&, unsigned int, unsigned int)+0x219)[0x81af7c9]
Aborted

On Fri, 14 Jul 2006, S. Bharadwaj Yadavalli wrote:
> Sorry for the newbie question. I downloaded llvm and tried out the
> simple "Hello, World" program but got the following error. What
am I
> missing? I am running RHAS 3 Update 4 with GCC 3.2.3.
That is clearly bad :).  Can you file a bug report (http://llvm.org/bugs) 
and attach the .bc file that crashes?  Please include info about what 
host you are running on.

Note that "hello" is actually a shell script that invokes the jit. 
You
want to attach hello.bc.

Thanks,

-Chris
> Thanks,
>
> Bharadwaj
>
> $ ./hello
> lli: 
>
/home/proj/skokomish/syadaval/ia32/Sandbox/llvm/lib/Target/X86/X86CodeEmitter.cpp:208:
> unsigned char ModRMByte(unsigned int, unsigned int, unsigned int):
> Assertion `Mod < 4 && RegOpcode < 8 && RM < 8
&& "ModRM Fields out of
> range!"' failed.
> lli((anonymous namespace)::PrintStackTrace()+0x15)[0x84ab499]
> /lib/tls/libc.so.6[0x3d7ec8]
> /lib/tls/libc.so.6(abort+0x15)[0x3d94f5]
> /lib/tls/libc.so.6[0x3d1619]
> lli((anonymous namespace)::Emitter::emitMemModRMByte(llvm::MachineInstr
> const&, unsigned int, unsigned int)+0x219)[0x81af7c9]
> Aborted
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>
-Chris

-- 
http://nondot.org/sabre/
http://llvm.org/

On Fri, Jul 14, 2006 at 02:29:09PM -0700, S. Bharadwaj Yadavalli
wrote:
> Sorry for the newbie question. I downloaded llvm and tried out the
> simple "Hello, World" program but got the following error. What
am I
> missing? I am running RHAS 3 Update 4 with GCC 3.2.3.
Is it possible there's a bug in GCC 3.2.3 which causes a miscompilation
and hence this crash?  As a related data point, GCC 3.2.2 is known not
to compile LLVM; see http://llvm.org/docs/GettingStarted.html#brokengcc

Does your build pass the regression tests and unit tests?

-- 
Misha Brukman :: http://misha.brukman.net