tree 0e66ec8772f985ad8af8c821175b3c012ee2e92d
parent 8eb066a1066b286c66109750cd7a91ed5a7693e7
author Eric Fiselier <eric@efcs.ca> 1483738978 +0000
committer Eric Fiselier <eric@efcs.ca> 1483738978 +0000

Add _LIBCPP_COMPILER_[CLANG|GCC|MSVC|IBM] macros.

This patch refactors the compiler detection done in `__config` by creating a
set of `_LIBCPP_COMPILER_<TYPE>` macros. The goal of this patch is to make
it easier to detect what compiler is being used outside of `__config`.

Additionally this patch removes workarounds for GCC in `__bit_reference`. I
tested GCC 4.8 and 4.9 without the workaround and neither seemed to need it
anymore.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@291286 91177308-0d34-0410-b5e6-96231b3b80d8