[cfe-dev] Strange character around function declared with "asm"

[Chris Lattner]

On Dec 2, 2010, at 10:43 PM, Eric Christopher wrote:

>> 
>> Is there a reason for the quotation marks (") and the \01 before the
>> intrinsic call? I tried to get the same assembly from llvm-gcc, and in
>> that case there are no quotation marks or other artefacts.
> 
> Apparently clang is mangling it this way on purpose as far as I can
> tell... I'm not really sure why though.

The gnu "asm renaming" extension says that USER_LABEL_PREFIX is not prefixed onto the symbol name.  The \1 prefix on the LLVM name tells the backend (through the 'Mangler' class) not to add it.

-Chris