DragonFly On-Line Manual Pages
LLVM-CXXMAP(1) LLVM LLVM-CXXMAP(1)
llvm-cxxmap - Mangled name remapping tool
llvm-cxxmap [options] symbol-file-1 symbol-file-2
The llvm-cxxmap tool performs fuzzy matching of C++ mangled names,
based on a file describing name components that should be considered
The symbol files should contain a list of C++ mangled names (one per
line). Blank lines and lines starting with # are ignored. The output
is a list of pairs of equivalent symbols, one per line, of the form
where <symbol-1> is a symbol from symbol-file-1 and <symbol-2> is a
symbol from symbol-file-2. Mappings for which the two symbols are
identical are omitted.
Specify a file containing a list of equivalence rules that
should be used to determine whether two symbols are equivalent.
Required. See REMAPPING FILE.
Specify a file to write the list of matched names to. If
unspecified, the list will be written to stdout.
Produce a warning if there are multiple equivalent (but
distinct) symbols in symbol-file-2.
Produce a warning if symbol-file-1 contains a symbol for which
there is no equivalent symbol in symbol-file-2.
The remapping file is a text file containing lines of the form
fragmentkind fragment1 fragment2
where fragmentkind is one of name, type, or encoding, indicating
whether the following mangled name fragments are <name>s, <type>s, or
<encoding>s, respectively. Blank lines and lines starting with # are
For convenience, built-in <substitution>s such as St and Ss are
accepted as <name>s (even though they technically are not <name>s).
For example, to specify that absl::string_view and std::string_view
should be treated as equivalent, the following remapping file could be
# absl::string_view is considered equivalent to std::string_view
type N4absl11string_viewE St17basic_string_viewIcSt11char_traitsIcEE
# std:: might be std::__1:: in libc++ or std::__cxx11:: in libstdc++
name St St3__1
name St St7__cxx11
Symbol remapping is currently only supported for C++ mangled names
following the Itanium C++ ABI mangling scheme. This covers all C++
targets supported by Clang other than Windows targets.
Maintained by the LLVM Team (https://llvm.org/).
2003-2020, LLVM Project
8 2020-02-22 LLVM-CXXMAP(1)