[llvm] [ORC] Add SymbolNameSpec for mangling-aware symbol names (PR #221635)

[via llvm-commits]

andreasmullen wrote:

Hi @lhames, 

This patch appears to have given the linker some trouble. With the following being reported: 
```
25.014 [1939/14/409] Linking CXX shared library lib/libLLVMOrcShared.so.24.0git
FAILED: lib/libLLVMOrcShared.so.24.0git 
: && /usr/bin/c++ -fPIC -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-uninitialized -Wno-nonnull -Wno-class-memaccess -Wno-dangling-reference -Wno-redundant-move -Wno-pessimizing-move -Wno-array-bounds -Wno-stringop-overread -Wno-dangling-pointer -Wno-unused-but-set-parameter -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG  -Wl,-z,defs -Wl,-z,nodelete -fuse-ld=lld -Wl,-z,pack-relative-relocs -Wl,--color-diagnostics   -Wl,--gc-sections -shared -Wl,-soname,libLLVMOrcShared.so.24.0git -o lib/libLLVMOrcShared.so.24.0git lib/ExecutionEngine/Orc/Shared/CMakeFiles/LLVMOrcShared.dir/AllocationActions.cpp.o lib/ExecutionEngine/Orc/Shared/CMakeFiles/LLVMOrcShared.dir/MachOObjectFormat.cpp.o lib/ExecutionEngine/Orc/Shared/CMakeFiles/LLVMOrcShared.dir/Mangler.cpp.o lib/ExecutionEngine/Orc/Shared/CMakeFiles/LLVMOrcShared.dir/ObjectFormats.cpp.o lib/ExecutionEngine/Orc/Shared/CMakeFiles/LLVMOrcShared.dir/OrcError.cpp.o lib/ExecutionEngine/Orc/Shared/CMakeFiles/LLVMOrcShared.dir/OrcRTBridge.cpp.o lib/ExecutionEngine/Orc/Shared/CMakeFiles/LLVMOrcShared.dir/SimpleRemoteEPCUtils.cpp.o lib/ExecutionEngine/Orc/Shared/CMakeFiles/LLVMOrcShared.dir/SymbolStringPool.cpp.o  -Wl,-rpath,"\$ORIGIN/../lib:\$ORIGIN/../lib/aarch64-unknown-linux-gnu:/home/buildbot/workspace/bolt-aarch64-ubuntu-shared/build/lib:"  lib/libLLVMSupport.so.24.0git  -Wl,-rpath-link,/home/buildbot/workspace/bolt-aarch64-ubuntu-shared/build/lib && :
ld.lld: error: undefined symbol: llvm::Triple::computeDataLayout[abi:cxx11](llvm::StringRef) const
>>> referenced by Mangler.cpp
>>>               lib/ExecutionEngine/Orc/Shared/CMakeFiles/LLVMOrcShared.dir/Mangler.cpp.o:(llvm::orc::Mangler::fromTriple(llvm::Triple const&, llvm::StringRef))
collect2: error: ld returned 1 exit status 
```
More information can be found on the build: https://lab.llvm.org/buildbot/#/builders/218/builds/6453

Can you look into this further please? 

https://github.com/llvm/llvm-project/pull/221635