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Alex Susu via llvm-dev

2021-Feb-06 17:26 UTC

[llvm-dev] Linker error while building a new back end in the latest LLVM from GitHub

Hello.
     I would like to come back to this message.
     It seems the reason of these linker errors are some changes performed in
LLVM itself
in the last 2 years, since I am able to run my back end in an older LLVM build
downloaded
from the source repository in Mar 2019. I apologize for being a bit in the haze
- I didn't
follow closely the changes performed to LLVM lately.

     If interested please find my main CMakeLists.txt for my Connex LLVM back
end:
         add_llvm_component_group(Connex)

         set(LLVM_TARGET_DEFINITIONS Connex.td)

         tablegen(LLVM ConnexGenRegisterInfo.inc -gen-register-info)
         tablegen(LLVM ConnexGenInstrInfo.inc -gen-instr-info)
         tablegen(LLVM ConnexGenAsmWriter.inc -gen-asm-writer)
         tablegen(LLVM ConnexGenAsmMatcher.inc -gen-asm-matcher)
         tablegen(LLVM ConnexGenDAGISel.inc -gen-dag-isel)
         tablegen(LLVM ConnexGenMCCodeEmitter.inc -gen-emitter)
         tablegen(LLVM ConnexGenCallingConv.inc -gen-callingconv)
         tablegen(LLVM ConnexGenSubtargetInfo.inc -gen-subtarget)
         add_public_tablegen_target(ConnexCommonTableGen)

         add_llvm_target(ConnexCodeGen
           ConnexAsmPrinter.cpp
           ConnexFrameLowering.cpp
           ConnexHazardRecognizer.cpp
           # ConnexHazardRecognizerPreRAScheduler.cpp
           ConnexInstrInfo.cpp
           ConnexISelDAGToDAG.cpp
           ConnexISelLowering.cpp
           ConnexMCInstLower.cpp
           ConnexRegisterInfo.cpp
           ConnexSelectionDAGInfo.cpp
           ConnexSubtarget.cpp
           ConnexTargetMachine.cpp

           LINK_COMPONENTS
           #Analysis
           AsmPrinter
           CodeGen
           Core
           ConnexDesc
           ConnexInfo
           MC
           SelectionDAG
           Support
           Target
           #TransformUtils

           ADD_TO_COMPONENT
           Connex
           )

         #add_subdirectory(AsmParser) # 2021_01
         #add_subdirectory(InstPrinter)
         #add_subdirectory(Disassembler)
         add_subdirectory(MCTargetDesc)
         add_subdirectory(TargetInfo)


     Please keep in mind that the source files of my Connex LLVM back
  end are in a ZIP archive at this address:
  https://sites.google.com/site/alexsusu/myfilecabinet/Connex_be.zip .


   Thank you very much,
     Alex


On 2/3/2021 11:43 PM, Alex Susu wrote:> Hello.
>      I am trying to build against the latest LLVM source from GitHub (from
Jan 23 2021) my
> Connex processor back end, which is mostly inspired from the BPF and Mips
back end.
>      I did my best to correct all the errors that appeared, but I now get a
rather strange
> linker error that I don't know exactly how to solve (maybe somebody is
more experienced
> than me on this). Maybe I have an error in
lib/Target/Connex/CMakeLists.txt.
> 
>     The error I get while building LLVM is:
>        <<cd
/home/asusu/LLVM/llvm2021_01_23/llvm-project/build/lib/Target/Connex &&
> /usr/bin/cmake -E cmake_link_script
CMakeFiles/LLVMConnexCodeGen.dir/link.txt --verbose=1
>        /usr/bin/c++ -fPIC  -fPIC -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-maybe-uninitialized 
> -Wno-class-memaccess -Wno-redundant-move -Wno-noexcept-type
-Wdelete-non-virtual-dtor
> -Wsuggest-override -Wno-comment -g 
>   -Wl,-rpath-link,/home/asusu/LLVM/llvm2021_01_23/llvm-project/build/./lib
  -Wl,-z,defs
> -Wl,-z,nodelete -shared -Wl,-soname,libLLVMConnexCodeGen.so.12git -o 
> ../../libLLVMConnexCodeGen.so.12git 
> CMakeFiles/LLVMConnexCodeGen.dir/ConnexAsmPrinter.cpp.o 
> CMakeFiles/LLVMConnexCodeGen.dir/ConnexFrameLowering.cpp.o 
> CMakeFiles/LLVMConnexCodeGen.dir/ConnexHazardRecognizer.cpp.o 
> CMakeFiles/LLVMConnexCodeGen.dir/ConnexInstrInfo.cpp.o 
> CMakeFiles/LLVMConnexCodeGen.dir/ConnexISelDAGToDAG.cpp.o 
> CMakeFiles/LLVMConnexCodeGen.dir/ConnexISelLowering.cpp.o 
> CMakeFiles/LLVMConnexCodeGen.dir/ConnexMCInstLower.cpp.o 
> CMakeFiles/LLVMConnexCodeGen.dir/ConnexRegisterInfo.cpp.o 
> CMakeFiles/LLVMConnexCodeGen.dir/ConnexSelectionDAGInfo.cpp.o 
> CMakeFiles/LLVMConnexCodeGen.dir/ConnexSubtarget.cpp.o 
> CMakeFiles/LLVMConnexCodeGen.dir/ConnexTargetMachine.cpp.o
 -Wl,-rpath,"\$ORIGIN/../lib"
> ../../libLLVMAsmPrinter.so.12git ../../libLLVMConnexDesc.so.12git 
> ../../libLLVMConnexInfo.so.12git ../../libLLVMSelectionDAG.so.12git 
> ../../libLLVMCodeGen.so.12git ../../libLLVMTarget.so.12git
../../libLLVMMC.so.12git
> ../../libLLVMCore.so.12git ../../libLLVMSupport.so.12git 
> -Wl,-rpath-link,/home/asusu/LLVM/llvm2021_01_23/llvm-project/build/lib
>        /usr/bin/ld:
CMakeFiles/LLVMConnexCodeGen.dir/ConnexTargetMachine.cpp.o: in
> function
`llvm::TargetTransformInfo::Model<llvm::ConnexTTIImpl>::~Model()':
>
/home/asusu/LLVM/llvm2021_01_23/llvm-project/llvm/include/llvm/Analysis/TargetTransformInfo.h:1672:
> undefined reference to `llvm::TargetTransformInfo::Concept::~Concept()'
>        /usr/bin/ld:
CMakeFiles/LLVMConnexCodeGen.dir/ConnexTargetMachine.cpp.o: in
> function 
>
`llvm::TargetTransformInfoImplCRTPBase<llvm::ConnexTTIImpl>::getUserCost(llvm::User
> const*, llvm::ArrayRef<llvm::Value const*>,
llvm::TargetTransformInfo::TargetCostKind)':
>
/home/asusu/LLVM/llvm2021_01_23/llvm-project/llvm/include/llvm/Analysis/TargetTransformInfoImpl.h:911:
> undefined reference to
`llvm::IntrinsicCostAttributes::IntrinsicCostAttributes(unsigned
> int, llvm::CallBase const&)'
>        /usr/bin/ld: 
>
/home/asusu/LLVM/llvm2021_01_23/llvm-project/llvm/include/llvm/Analysis/TargetTransformInfoImpl.h:953:
> undefined reference to
`llvm::TargetTransformInfo::getOperandInfo(llvm::Value const*,
> llvm::TargetTransformInfo::OperandValueProperties&)'
>        ...
>        ...
>        /usr/bin/ld: 
>
/home/asusu/LLVM/llvm2021_01_23/llvm-project/llvm/include/llvm/CodeGen/BasicTTIImpl.h:1805:
undefined
> reference to
`llvm::IntrinsicCostAttributes::IntrinsicCostAttributes(unsigned int,
> llvm::Type*, llvm::ArrayRef<llvm::Type*>)'
>        /usr/bin/ld: 
>
/home/asusu/LLVM/llvm2021_01_23/llvm-project/llvm/include/llvm/CodeGen/BasicTTIImpl.h:1826:
undefined
> reference to
`llvm::IntrinsicCostAttributes::IntrinsicCostAttributes(unsigned int,
> llvm::Type*, llvm::ArrayRef<llvm::Type*>, llvm::FastMathFlags)'
>        collect2: error: ld returned 1 exit status>>
> 
> 
>      Please find if you have the time also most of the source files of my
Connex LLVM back
> end in the ZIP archive at this address: 
> https://sites.google.com/site/alexsusu/myfilecabinet/Connex_be.zip (please
note the file
> ERROR_LINKER.txt contains the above mentioned linker error).
>      Please let me know if you want me to provide any further information
about my build.
> 
>    Thank you very much,
>      Alex

Alex Susu via llvm-dev

2021-Feb-09 11:33 UTC

head link

[llvm-dev] Linker error while building a new back end in the latest LLVM from GitHub

Hello.
     I would like to inform that I managed to solve the problem mentioned here
and to
build LLVM today.
     What I had to do was to add (uncomment) in the
lib/Target/Connex/CMakeLists.txt (my
main back end CMakeLists file), in the section LINK_COMPONENTS the following 2
lines:
           Analysis
           TransformUtils

     I got inspired a bit from the XCore back end's main CMakeLists.txt
since my back
end's ConnexTargetTransformInfo.h is inspired from XCore.

     If ever, you can find the corrected CMakeLists.txt at 
https://sites.google.com/site/alexsusu/myfilecabinet/Connex_be.zip.


     However, I still have issues. While running llc I get the following error:
         ********** EXPANDING POST-RA PSEUDO INSTRS **********
         ********** Function: MatMul_BTransposed
         real copy:   $r5 = COPY $r0
         Target didn't implement TargetInstrInfo::copyPhysReg!
         UNREACHABLE executed at 
/home/asusu/LLVM/llvm2021_01_23/llvm-project/llvm/include/llvm/CodeGen/TargetInstrInfo.h:951!
         ...
          #8 0x00007fce772ce4b6
llvm::TargetInstrInfo::isCopyInstrImpl(llvm::MachineInstr
const&) const 
/home/asusu/LLVM/llvm2021_01_23/llvm-project/llvm/include/llvm/CodeGen/TargetInstrInfo.h:960:3
          #9 0x00007fce712082c8 (anonymous 
namespace)::ExpandPostRA::LowerCopy(llvm::MachineInstr*) 
/home/asusu/LLVM/llvm2021_01_23/llvm-project/llvm/lib/CodeGen/ExpandPostRAPseudos.cpp:166:19
         #10 0x00007fce71208611 (anonymous 
namespace)::ExpandPostRA::runOnMachineFunction(llvm::MachineFunction&) 
/home/asusu/LLVM/llvm2021_01_23/llvm-project/llvm/lib/CodeGen/ExpandPostRAPseudos.cpp:215:20
        ...
         #17 0x00005560165771f7 compileModule(char**, llvm::LLVMContext&) 
/home/asusu/LLVM/llvm2021_01_23/llvm-project/llvm/tools/llc/llc.cpp:661:66


     But actually I did implement TargetInstrInfo::copyPhysReg() in
ConnexInstrInfo.cpp in
my back end (you can see my back end code at 
https://sites.google.com/site/alexsusu/myfilecabinet/Connex_be.zip).

     Can somebody help me with this new llc runtime error that just appeared?
(It looks
like llc does not load the object file of ConnexInstrInfo.cpp, so it might be a
hidden
linker issue).

   Thank you very much,
     Alex



On 2/6/2021 7:26 PM, Alex Susu wrote:>    Hello.
>      I would like to come back to this message.
>      It seems the reason of these linker errors are some changes performed
in LLVM itself
> in the last 2 years, since I am able to run my back end in an older LLVM
build downloaded
> from the source repository in Mar 2019. I apologize for being a bit in the
haze - I didn't
> follow closely the changes performed to LLVM lately.
> 
>      If interested please find my main CMakeLists.txt for my Connex LLVM
back end:
>          add_llvm_component_group(Connex)
> 
>          set(LLVM_TARGET_DEFINITIONS Connex.td)
> 
>          tablegen(LLVM ConnexGenRegisterInfo.inc -gen-register-info)
>          tablegen(LLVM ConnexGenInstrInfo.inc -gen-instr-info)
>          tablegen(LLVM ConnexGenAsmWriter.inc -gen-asm-writer)
>          tablegen(LLVM ConnexGenAsmMatcher.inc -gen-asm-matcher)
>          tablegen(LLVM ConnexGenDAGISel.inc -gen-dag-isel)
>          tablegen(LLVM ConnexGenMCCodeEmitter.inc -gen-emitter)
>          tablegen(LLVM ConnexGenCallingConv.inc -gen-callingconv)
>          tablegen(LLVM ConnexGenSubtargetInfo.inc -gen-subtarget)
>          add_public_tablegen_target(ConnexCommonTableGen)
> 
>          add_llvm_target(ConnexCodeGen
>            ConnexAsmPrinter.cpp
>            ConnexFrameLowering.cpp
>            ConnexHazardRecognizer.cpp
>            # ConnexHazardRecognizerPreRAScheduler.cpp
>            ConnexInstrInfo.cpp
>            ConnexISelDAGToDAG.cpp
>            ConnexISelLowering.cpp
>            ConnexMCInstLower.cpp
>            ConnexRegisterInfo.cpp
>            ConnexSelectionDAGInfo.cpp
>            ConnexSubtarget.cpp
>            ConnexTargetMachine.cpp
> 
>            LINK_COMPONENTS
>            #Analysis
>            AsmPrinter
>            CodeGen
>            Core
>            ConnexDesc
>            ConnexInfo
>            MC
>            SelectionDAG
>            Support
>            Target
>            #TransformUtils
> 
>            ADD_TO_COMPONENT
>            Connex
>            )
> 
>          #add_subdirectory(AsmParser) # 2021_01
>          #add_subdirectory(InstPrinter)
>          #add_subdirectory(Disassembler)
>          add_subdirectory(MCTargetDesc)
>          add_subdirectory(TargetInfo)
> 
> 
>      Please keep in mind that the source files of my Connex LLVM back
>   end are in a ZIP archive at this address:
>   https://sites.google.com/site/alexsusu/myfilecabinet/Connex_be.zip .
> 
> 
>    Thank you very much,
>      Alex
> 
> 
> On 2/3/2021 11:43 PM, Alex Susu wrote:
>> Hello.
>>      I am trying to build against the latest LLVM source from GitHub
(from Jan 23 2021)
>> my Connex processor back end, which is mostly inspired from the BPF and
Mips back end.
>>      I did my best to correct all the errors that appeared, but I now
get a rather
>> strange linker error that I don't know exactly how to solve (maybe
somebody is more
>> experienced than me on this). Maybe I have an error in
lib/Target/Connex/CMakeLists.txt.
>>
>>     The error I get while building LLVM is:
>>        <<cd
/home/asusu/LLVM/llvm2021_01_23/llvm-project/build/lib/Target/Connex &&
>> /usr/bin/cmake -E cmake_link_script
CMakeFiles/LLVMConnexCodeGen.dir/link.txt --verbose=1
>>        /usr/bin/c++ -fPIC  -fPIC -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-maybe-uninitialized -Wno-class-memaccess -Wno-redundant-move
-Wno-noexcept-type
>> -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -g 
>>
  -Wl,-rpath-link,/home/asusu/LLVM/llvm2021_01_23/llvm-project/build/./lib  
-Wl,-z,defs
>> -Wl,-z,nodelete -shared -Wl,-soname,libLLVMConnexCodeGen.so.12git -o 
>> ../../libLLVMConnexCodeGen.so.12git 
>> CMakeFiles/LLVMConnexCodeGen.dir/ConnexAsmPrinter.cpp.o 
>> CMakeFiles/LLVMConnexCodeGen.dir/ConnexFrameLowering.cpp.o 
>> CMakeFiles/LLVMConnexCodeGen.dir/ConnexHazardRecognizer.cpp.o 
>> CMakeFiles/LLVMConnexCodeGen.dir/ConnexInstrInfo.cpp.o 
>> CMakeFiles/LLVMConnexCodeGen.dir/ConnexISelDAGToDAG.cpp.o 
>> CMakeFiles/LLVMConnexCodeGen.dir/ConnexISelLowering.cpp.o 
>> CMakeFiles/LLVMConnexCodeGen.dir/ConnexMCInstLower.cpp.o 
>> CMakeFiles/LLVMConnexCodeGen.dir/ConnexRegisterInfo.cpp.o 
>> CMakeFiles/LLVMConnexCodeGen.dir/ConnexSelectionDAGInfo.cpp.o 
>> CMakeFiles/LLVMConnexCodeGen.dir/ConnexSubtarget.cpp.o 
>> CMakeFiles/LLVMConnexCodeGen.dir/ConnexTargetMachine.cpp.o
 -Wl,-rpath,"\$ORIGIN/../lib"
>> ../../libLLVMAsmPrinter.so.12git ../../libLLVMConnexDesc.so.12git 
>> ../../libLLVMConnexInfo.so.12git ../../libLLVMSelectionDAG.so.12git 
>> ../../libLLVMCodeGen.so.12git ../../libLLVMTarget.so.12git
../../libLLVMMC.so.12git
>> ../../libLLVMCore.so.12git ../../libLLVMSupport.so.12git 
>> -Wl,-rpath-link,/home/asusu/LLVM/llvm2021_01_23/llvm-project/build/lib
>>        /usr/bin/ld:
CMakeFiles/LLVMConnexCodeGen.dir/ConnexTargetMachine.cpp.o: in
>> function
`llvm::TargetTransformInfo::Model<llvm::ConnexTTIImpl>::~Model()':
>>
/home/asusu/LLVM/llvm2021_01_23/llvm-project/llvm/include/llvm/Analysis/TargetTransformInfo.h:1672:
>> undefined reference to
`llvm::TargetTransformInfo::Concept::~Concept()'
>>        /usr/bin/ld:
CMakeFiles/LLVMConnexCodeGen.dir/ConnexTargetMachine.cpp.o: in
>> function 
>>
`llvm::TargetTransformInfoImplCRTPBase<llvm::ConnexTTIImpl>::getUserCost(llvm::User
>> const*, llvm::ArrayRef<llvm::Value const*>,
llvm::TargetTransformInfo::TargetCostKind)':
>>
/home/asusu/LLVM/llvm2021_01_23/llvm-project/llvm/include/llvm/Analysis/TargetTransformInfoImpl.h:911:
>> undefined reference to
`llvm::IntrinsicCostAttributes::IntrinsicCostAttributes(unsigned
>> int, llvm::CallBase const&)'
>>        /usr/bin/ld: 
>>
/home/asusu/LLVM/llvm2021_01_23/llvm-project/llvm/include/llvm/Analysis/TargetTransformInfoImpl.h:953:
>> undefined reference to
`llvm::TargetTransformInfo::getOperandInfo(llvm::Value const*,
>> llvm::TargetTransformInfo::OperandValueProperties&)'
>>        ...
>>        ...
>>        /usr/bin/ld: 
>>
/home/asusu/LLVM/llvm2021_01_23/llvm-project/llvm/include/llvm/CodeGen/BasicTTIImpl.h:1805:
>> undefined reference to
`llvm::IntrinsicCostAttributes::IntrinsicCostAttributes(unsigned
>> int, llvm::Type*, llvm::ArrayRef<llvm::Type*>)'
>>        /usr/bin/ld: 
>>
/home/asusu/LLVM/llvm2021_01_23/llvm-project/llvm/include/llvm/CodeGen/BasicTTIImpl.h:1826:
>> undefined reference to
`llvm::IntrinsicCostAttributes::IntrinsicCostAttributes(unsigned
>> int, llvm::Type*, llvm::ArrayRef<llvm::Type*>,
llvm::FastMathFlags)'
>>        collect2: error: ld returned 1 exit status>>
>>
>>
>>      Please find if you have the time also most of the source files of
my Connex LLVM
>> back end in the ZIP archive at this address: 
>> https://sites.google.com/site/alexsusu/myfilecabinet/Connex_be.zip
(please note the file
>> ERROR_LINKER.txt contains the above mentioned linker error).
>>      Please let me know if you want me to provide any further
information about my build.
>>
>>    Thank you very much,
>>      Alex

llvm dev - Feb 2021 - Linker error while building a new back end in the latest LLVM from GitHub

[llvm-dev] Linker error while building a new back end in the latest LLVM from GitHub

[llvm-dev] Linker error while building a new back end in the latest LLVM from GitHub