llvm dev - Aug 2010 - [LLVMdev] llvmgcc-4.2 llvmg++-4.2 on OS X -- missing GCC __builtin intrinsics

I've had good luck using the llvm-gcc & llvm-g++ on small projects,
but I just discovered that it's apparently missing some of the GCC
intrinsic functions -- specifically, when I try and compile VXL
(http://vxl.sourceforge.net) it dies when it encounters
__builtin_bswap32 .

This is on OS X with the llvm-gcc-4.2 & llvm_g++-42 that are part of
the XCode 3.2.3

I don't know if this was the LLVM-GCC developer's oversight or
Apple's
 but it keeps me from using llvm-gcc as my default compiler.

Hi Kent, I suggest you open a bug report with a preprocessed testcase.

Best wishes,

Duncan.
> I've had good luck using the llvm-gcc&  llvm-g++ on small projects,
> but I just discovered that it's apparently missing some of the GCC
> intrinsic functions -- specifically, when I try and compile VXL
> (http://vxl.sourceforge.net) it dies when it encounters
> __builtin_bswap32 .
>
> This is on OS X with the llvm-gcc-4.2&  llvm_g++-42 that are part of
> the XCode 3.2.3
>
> I don't know if this was the LLVM-GCC developer's oversight or
Apple's
>   but it keeps me from using llvm-gcc as my default compiler.
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev

I didn't file a bug because as it turns out the problem isn't LLVM,
it's gcc-xml which is part of the CableSwig package.
gcc-xml picked up on the __llvm__ symbol and defined it when it
'compiled' C++ files.  Since __llvm__ was defined, but gcc-xml
doesn't
know anything about llvm intrinsic functions, it threw an error.

The gcc-xml guys at Kitware are working on fixing this.

On Mon, Aug 30, 2010 at 11:29 AM, Duncan Sands <baldrick at free.fr>
wrote:
> Hi Kent, I suggest you open a bug report with a preprocessed testcase.
>
> Best wishes,
>
> Duncan.
>
>> I've had good luck using the llvm-gcc&  llvm-g++ on small
projects,
>> but I just discovered that it's apparently missing some of the GCC
>> intrinsic functions -- specifically, when I try and compile VXL
>> (http://vxl.sourceforge.net) it dies when it encounters
>> __builtin_bswap32 .
>>
>> This is on OS X with the llvm-gcc-4.2&  llvm_g++-42 that are part
of
>> the XCode 3.2.3
>>
>> I don't know if this was the LLVM-GCC developer's oversight or
Apple's
>>   but it keeps me from using llvm-gcc as my default compiler.
>> _______________________________________________
>> LLVM Developers mailing list
>> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
>> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>