The demangler had stopped using a custom allocator but had not been updated to
remove the use of the explicit allocator passing. This removes that as we do
not need to do anything special here anymore. This just makes the code more
compact. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@287472 91177308-0d34-0410-b5e6-96231b3b80d8
We could create a local typedef for std::vector called Vector. Inline the use
of std::vector rather than use the typedef. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@287471 91177308-0d34-0410-b5e6-96231b3b80d8
We created a local typedef for `std::basic_string<char, std::char_traits<char>>`
which is just `std::string`. Remove the local typedef and propagate the type
information through the rest of the demangler. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@287470 91177308-0d34-0410-b5e6-96231b3b80d8
Prefer direct member initialization over the explicit out-of-line initialization
for the construction of the local type. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@287469 91177308-0d34-0410-b5e6-96231b3b80d8
Only attempt to demangle symbols which have the itanium C++ prefix of `_Z`.
This ensures that we do not treat any symbol name as a managled named. We would
previously treat a C function `f` as a mangled name and decode that to `float`
incorrectly.
While it is easy to add tests for this, Mehdi recommended against introducing
tests for the demangler as libc++abi should cover the testing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@286795 91177308-0d34-0410-b5e6-96231b3b80d8
This requires removing the custom allocator, since Demangle cannot
depend on Support and so cannot use Compiler.h.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@280750 91177308-0d34-0410-b5e6-96231b3b80d8
This adds a copy of the demangler in libcxxabi.
The code also has no dependencies on anything else in LLVM. To enforce
that I added it as another library. That way a BUILD_SHARED_LIBS will
fail if anyone adds an use of StringRef for example.
The no llvm dependency combined with the fact that this has to build
on linux, OS X and Windows required a few changes to the code. In
particular:
No constexpr.
No alignas
On OS X at least this library has only one global symbol:
__ZN4llvm16itanium_demangleEPKcPcPmPi
My current plan is:
Commit something like this
Change lld to use it
Change lldb to use it as the fallback
Add a few #ifdefs so that exactly the same file can be used in
libcxxabi to export abi::__cxa_demangle.
Once the fast demangler in lldb can handle any names this
implementation can be replaced with it and we will have the one true
demangler.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@280732 91177308-0d34-0410-b5e6-96231b3b80d8
