On Nov 27, 2012, at 5:16 PM, Xinliang David Li <davi...@google.com> wrote: >>>> Removing PCH will give us more implementation freedom for the memory >>>> management project >>>> (http://gcc.gnu.org/wiki/cxx-conversion/gc-alternatives). >>> >>> One of the arguments put forward to advocate the transition to C++ was the >>> competition. Where do the other compilers stand when it comes to PCHs? >> > >> Clang has fantastic support for PCH... and soon modules. > > Are they sharing some implementations?
Yes, absolutely. In the GCC terminology, both use a "streaming" approach for writing out code, and a lot of the mechanics of that streaming logic are similar. Modules adds a bunch of additional logic on top of what PCH uses though. -Chris
