PointerLikeTypeTraits: Standardize NumLowBitsAvailable on static constexpr rather than anonymous enum
This is (more?) usable by GDB pretty printers and seems nicer to write.
There's one tricky caveat that in C++14 (LLVM's codebase today) the
static constexpr member declaration is not a definition - so odr use of
this constant requires an out of line definition, which won't be
provided (that'd make all these trait classes more annoyidng/expensive
to maintain). But the use of this constant in the library implementation
is/should always be in a non-odr context - only two unit tests needed to
be touched to cope with this/avoid odr using these constants.
Based on/expanded from D72590 by Christian Sigg.
GitOrigin-RevId: 65eb74e94b414fcde6bfa810d1c30c7fcb136b77
1 file changed
