[PATCH] D36431: Add powerpc64 to compiler-rt build infrastructure.

[Nemanja Ivanovic via Phabricator via cfe-commits]

nemanjai added a comment.

This patch appears to be perfectly fine. However, it triggers a large number of warnings. Namely, there's a large number of `warning: ISO C forbids an empty translation unit [-Wpedantic]` warnings produced.
The reason is that all the code in the file is wrapped with an `if !_ARCH_PPC` macro. I assume that we do not want `compiler_rt` to expose builtins that assume an 80-bit `long double` (which is the behaviour we get now). So it seems to me that files that define such builtins should simply be removed from the `powerpc64_SOURCES` and they should `#error` on PPC.

Also, I'm getting lots of warnings from `compiler-rt/lib/builtins/atomic.c` such as `warning: implicit declaration of function '__c11_atomic_fetch_or' [-Wimplicit-function-declaration]`. It would appear that the `__c11_atomic_*` family of builtins isn't exposed by the build compiler (and should presumably be declared in a header if file is being built with a compiler that doesn't expose those).


https://reviews.llvm.org/D36431