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download PDF document: llvm-cxxmap15.1.pdf

LLVM-CXXMAP(1) LLVM LLVM-CXXMAP(1)
NAME llvm-cxxmap - Mangled name remapping tool
SYNOPSIS llvm-cxxmap [options] symbol-file-1 symbol-file-2
DESCRIPTION The llvm-cxxmap tool performs fuzzy matching of C++ mangled names, based on a file describing name components that should be considered equivalent.
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
<symbol-1> <symbol-2>
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.
OPTIONS
-remapping-file=file, -r=file Specify a file containing a list of equivalence rules that should be used to determine whether two symbols are equivalent. Required. See REMAPPING FILE.
-output=file, -o=file Specify a file to write the list of matched names to. If unspecified, the list will be written to stdout.
-Wambiguous Produce a warning if there are multiple equivalent (but distinct) symbols in symbol-file-2.
-Wincomplete Produce a warning if symbol-file-1 contains a symbol for which there is no equivalent symbol in symbol-file-2.
REMAPPING FILE 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 ignored.
Unmangled C names can be expressed as an encoding that is a (length-prefixed) <source-name>:
# C function "void foo_bar()" is remapped to C++ function "void foo::bar()". encoding 7foo_bar _Z3foo3barv
For convenience, built-in <substitution>s such as St and Ss are 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
NOTE: 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.
AUTHOR Maintained by the LLVM Team (https://llvm.org/).
COPYRIGHT 2003-2023, LLVM Project
15 2023-12-15 LLVM-CXXMAP(1)