Eric Fiselier 0ed525382f [libc++] Shrink variant's index type when possible ... Summary: Currently `std::variant` always uses an unsigned int to store the variant index. However this isn't nessesary and causes `std::variant` to be larger than it needs to be in most cases. This patch changes the index type to be `unsigned char` when possible, and `unsigned short` or `unsigned int` otherwise, depending on the size (Although it's questionable if it's even possible to create a variant with 65535 elements. Unfortunately this change is an ABI break, and as such is only enabled in ABI v2. Reviewers: mpark Reviewed By: mpark Subscribers: cfe-commits Differential Revision: https://reviews.llvm.org/D40210 llvm-svn: 318621		2017-11-19 04:19:44 +00:00
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libcxx	[libc++] Shrink variant's index type when possible	2017-11-19 04:19:44 +00:00
std	More of P0600 - '[[nodiscard]] in the Library' mark empty() as nodiscard in filesystem::path	2017-11-16 05:48:32 +00:00
support	Rename identifiers named `__output`	2017-11-14 11:14:25 +00:00
CMakeLists.txt	Resubmit "Fix llvm-lit script generation in libcxx."	2017-09-19 17:19:10 +00:00
lit.cfg	Move libcxx/test/libcxx python package into libcxx/utils/libcxx.	2017-02-09 23:18:11 +00:00
lit.site.cfg.in	[libc++][CMake] Use debug MSVC runtimes when libc++ is built in debug mode	2017-01-14 07:54:39 +00:00
nothing_to_do.pass.cpp	Test commit: Reverting whitespace changes	2014-07-17 05:10:03 +00:00