Build failure

[svkeerthy]

Hello,

I am trying to build LLVM-MCAD with main branch of the llvm project. The build fails with the following error -

[63/2914] Building CXX object CMakeFiles/llvm-mcad.dir/Brokers/AsmUtils/CodeRegionGenerator.cpp.o
FAILED: CMakeFiles/llvm-mcad.dir/Brokers/AsmUtils/CodeRegionGenerator.cpp.o 
/usr/bin/c++ -DGTEST_HAS_RTTI=0 -I/home/VK/llvm-project/llvm/include -I/home/VK/llvm-project/build/include -I/home/VK/LLVM-MCA-Daemon -fno-rtti -g -std=gnu++17   -D_GNU_SOURCE -D_DEBUG -D_GLIBCXX_ASSERTIONS -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS  -fno-exceptions -funwind-tables -fno-rtti -MD -MT CMakeFiles/llvm-mcad.dir/Brokers/AsmUtils/CodeRegionGenerator.cpp.o -MF CMakeFiles/llvm-mcad.dir/Brokers/AsmUtils/CodeRegionGenerator.cpp.o.d -o CMakeFiles/llvm-mcad.dir/Brokers/AsmUtils/CodeRegionGenerator.cpp.o -c /home/VK/LLVM-MCA-Daemon/Brokers/AsmUtils/CodeRegionGenerator.cpp
/home/VK/LLVM-MCA-Daemon/Brokers/AsmUtils/CodeRegionGenerator.cpp: In member function ‘virtual llvm::Expected<const llvm::mca::CodeRegions&> llvm::mca::AsmCodeRegionGenerator::parseCodeRegions()’:
/home/VK/LLVM-MCA-Daemon/Brokers/AsmUtils/CodeRegionGenerator.cpp:126:57: error: no matching function for call to ‘llvm::Target::createAsmTargetStreamer(llvm::mca::MCStreamerWrapper&, llvm::formatted_raw_ostream&, std::unique_ptr<llvm::MCInstPrinter>::pointer, bool&) const’
  126 |                                          Opts.AsmVerbose);
      |                                                         ^
In file included from /home/VK/LLVM-MCA-Daemon/Brokers/AsmUtils/CodeRegionGenerator.h:23,
                 from /home/VK/LLVM-MCA-Daemon/Brokers/AsmUtils/CodeRegionGenerator.cpp:16:
/home/VK/llvm-project/llvm/include/llvm/MC/TargetRegistry.h:553:21: note: candidate: ‘llvm::MCTargetStreamer* llvm::Target::createAsmTargetStreamer(llvm::MCStreamer&, llvm::formatted_raw_ostream&, llvm::MCInstPrinter*) const’
  553 |   MCTargetStreamer *createAsmTargetStreamer(MCStreamer &S,
      |                     ^~~~~~~~~~~~~~~~~~~~~~~
/home/VK/llvm-project/llvm/include/llvm/MC/TargetRegistry.h:553:21: note:   candidate expects 3 arguments, 4 provided
[84/2914] Building CXX object _deps/grpc-build/CMakeFiles...rc/core/ext/filters/channel_idle/channel_idle_filter.cc.o
In file included from /home/VK/LLVM-MCA-Daemon/build/_deps/grpc-src/src/core/ext/filters/channel_idle/channel_idle_filter.cc:48:
/home/VK/LLVM-MCA-Daemon/build/_deps/grpc-src/src/core/lib/promise/loop.h:127:31: warning: attribute ignored in declaration of ‘union grpc_core::promise_detail::Loop<F>::<unnamed>’ [-Wattributes]
  127 |   GPR_NO_UNIQUE_ADDRESS union {
      |                               ^
/home/VK/LLVM-MCA-Daemon/build/_deps/grpc-src/src/core/lib/promise/loop.h:127:31: note: attribute for ‘union grpc_core::promise_detail::Loop<F>::<unnamed>’ must follow the ‘union’ keyword
[88/2914] Building CXX object _deps/grpc-build/CMakeFiles...r/src/core/ext/filters/client_channel/client_channel.cc.o
ninja: build stopped: subcommand failed.

Any inputs on how to handle this?

Also, would it be possible to use MCAD with other versions of LLVM? Say 17.x? Build with LLVM 17.x also fails with a similar error -

[8/10] Building CXX object CMakeFiles/llvm-mcad.dir/llvm-mcad.cpp.o
FAILED: CMakeFiles/llvm-mcad.dir/llvm-mcad.cpp.o 
/usr/bin/c++ -DGTEST_HAS_RTTI=0 -I/home/VK/llvm-project/install/include -I/home/VK/LLVM-MCA-Daemon -fno-rtti -g -std=gnu++17   -D_GNU_SOURCE -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_LIBCPP_ENABLE_HARDENED_MODE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS  -fno-exceptions -funwind-tables -fno-rtti -MD -MT CMakeFiles/llvm-mcad.dir/llvm-mcad.cpp.o -MF CMakeFiles/llvm-mcad.dir/llvm-mcad.cpp.o.d -o CMakeFiles/llvm-mcad.dir/llvm-mcad.cpp.o -c /home/VK/LLVM-MCA-Daemon/llvm-mcad.cpp
/home/VK/LLVM-MCA-Daemon/llvm-mcad.cpp: In function ‘int main(int, char**)’:
/home/VK/LLVM-MCA-Daemon/llvm-mcad.cpp:361:71: error: no matching function for call to ‘llvm::mca::InstrBuilder::InstrBuilder(llvm::MCSubtargetInfo&, llvm::MCInstrInfo&, llvm::MCRegisterInfo&, std::unique_ptr<llvm::MCInstrAnalysis>::pointer, llvm::mca::InstrumentManager&, llvm::cl::opt<unsigned int>&)’
  361 |   mca::InstrBuilder IB(*STI, *MCII, *MRI, MCIA.get(), *IM, CallLatency);
      |                                                                       ^
In file included from /home/VK/LLVM-MCA-Daemon/llvm-mcad.cpp:18:
/home/VK/llvm-project/install/include/llvm/MCA/InstrBuilder.h:100:3: note: candidate: ‘llvm::mca::InstrBuilder::InstrBuilder(const llvm::MCSubtargetInfo&, const llvm::MCInstrInfo&, const llvm::MCRegisterInfo&, const llvm::MCInstrAnalysis*, const llvm::mca::InstrumentManager&)’
  100 |   InstrBuilder(const MCSubtargetInfo &STI, const MCInstrInfo &MCII,
      |   ^~~~~~~~~~~~
/home/VK/llvm-project/install/include/llvm/MCA/InstrBuilder.h:100:3: note:   candidate expects 5 arguments, 6 provided
[9/10] Building CXX object CMakeFiles/llvm-mcad.dir/MCAWorker.cpp.o
ninja: build stopped: subcommand failed.

Thanks!

[chinmaydd]

Hi @svkeerthy, I would recommend using the main branch to work with upstream LLVM. After following instructions in the README (using upstream LLVM commit and applying the Identifier patch) I am able to get MCAD working.

Here's the commit I am working with -

commit 846dccce9cd030a1984a4d4336267cd2850e6bd8 (upstream/main)
Author: Jacek Caban <[email protected]>
Date:   Sun Aug 11 19:03:09 2024 +0200

    [LLD][COFF] Validate import library machine type. (#102738)

Let me know if you run into issues. That branch is still a bit experimental, so I would advise some caution when using it.

Working with other versions of LLVM is going to be tricky as some core MCA APIs have changed in the past few years. We only support custom LLVM (with the broker-improvements branch) or upstream.