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r292467 | compnerd | 2017-01-18 18:58:46 -0800 (Wed, 18 Jan 2017) | 7 lines
llvm-cxxfilt: filter out invalid manglings
c++filt does not attempt to demangle symbols which do not match its
expected format. This means that the symbol must start with _Z or ___Z
(block invocation function extension). Any other symbols are returned
as is. Note that this is different from the behaviour of __cxa_demangle
which will demangle fragments.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_40@292861 91177308-0d34-0410-b5e6-96231b3b80d8
`c++filt` when given no arguments runs as a REPL, decoding each line as a
decorated name. Unify the test structure to be more uniform, with the tests for
llvm-cxxfilt living under test/tools/llvm-cxxfilt.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@286777 91177308-0d34-0410-b5e6-96231b3b80d8
This adds a dependency on Support/. As llvm-cxxfilt will grow
support for options this will be needed anyway.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282523 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
