__builtin_malloc, __builtin_calloc support in cfe

Clang Frontend
#1

Hi,

Is builtin’s __builtin_malloc, __builtin_calloc supported in clang fe??

I checked in

  • “tools/clang/include/clang/Basic/Builtins.def”,
  • “tools/clang/lib/CodeGen/CGBuiltin.cpp” and couldn’t find the implementation.

Is there any particular reason for not supporting it currently ?

Thanks in advance,
Viswa

#2

What's the point of them? Can the compiler do anything useful with them
except turning them back to calls of the corresponding library
functions? "GCC has them" IMO is a bad reason in this case by itself.

Joerg

#3

Especially when the workaround is as simple as

#define __builtin_malloc malloc

-- Jean-Daniel