tree c1f70f6d29da55e0f82c6f571bfa13c9672bd4f0
parent 63d88110ccb598e90dcce6a5dd79353bc9ae385a
author Saleem Abdulrasool <compnerd@compnerd.org> 1505454159 +0000
committer Saleem Abdulrasool <compnerd@compnerd.org> 1505454159 +0000

typeinfo: provide a partial implementation for Win32

The RTTI structure is different on Windows when building under MS ABI.
Update the definition to reflect this. The structure itself contains an
area for caching the undecorated name (which is 0-initialized). The
decorated name has a bitfield followed by the linkage name. When
std::type_info::name is invoked for the first time, the runtime should
undecorate the name, cache it, and return the undecorated name. This
requires access to an implementation of __unDName. For now, return
the raw name.

This uses the fnv-1a hash to hash the name of the RTTI. We could use an
alternate hash (murmur? city?), but, this was the quickest to throw
together.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@313344 91177308-0d34-0410-b5e6-96231b3b80d8