[llvm-dev] Error in generating Object Code for implemented assembly vector instructions
hameeza ahmed via llvm-dev
llvm-dev at lists.llvm.org
Sat Aug 26 12:47:40 PDT 2017
Please help. How to resolve above mentioned issues.
On Sat, Aug 26, 2017 at 2:31 PM, hameeza ahmed <hahmed2305 at gmail.com> wrote:
> i want to emit binary code for the following implemented vector assembly
> instructions.
> P_256B_LOAD_DWORD R_0_R2048b_0, pword ptr [rip + b]
> P_256B_LOAD_DWORD R_0_R2048b_1, pword ptr [rip + c]
> P_256B_VADD R_0_R2048b_0, R_0_R2048b_1, R_0_R2048b_0
> P_256B_STORE_DWORD pword ptr [rip + a], R_0_R2048b_0
>
> I added the following lines in X86MCInstLower.cpp;
> unsigned NewOpc;
> switch (OutMI.getOpcode()) {
> default: llvm_unreachable("Invalid opcode");
> case X86::P_256B_LOAD_DWORD: NewOpc = X86::P_256B_LOAD_DWORD;
> break;
> case X86::P_256B_STORE_DWORD: NewOpc = X86::P_256B_STORE_DWORD;
> break;
> case X86::P_256B_VADD: NewOpc = X86::P_256B_VADD; break;
> }
> OutMI.setOpcode(NewOpc);
> break;
>
>
> when i used the command:
>
> llc -x86-asm-syntax=intel -debug -p-enabled=true -filetype=obj
> sum-vec03.ll>objpon 2>&1
> i am getting the following error:
>
> ********** COMPUTING STACKMAP LIVENESS: foo **********
> Unknown immediate size
> UNREACHABLE executed at lib/Target/X86/MCTargetDesc/X86BaseInfo.h:574!
> #0 0x00000000019d9fec llvm::sys::PrintStackTrace(llvm::raw_ostream&)
> lib/Support/Unix/Signals.inc:402:11
> #1 0x00000000019da4d9 PrintStackTraceSignalHandler(void*)
> lib/Support/Unix/Signals.inc:466:1
> #2 0x00000000019d8853 llvm::sys::RunSignalHandlers()
> lib/Support/Signals.cpp:0:5
> #3 0x00000000019da834 SignalHandler(int) lib/Support/Unix/Signals.inc:
> 256:1
> #4 0x00007f2f2be14d10 __restore_rt (/lib/x86_64-linux-gnu/
> libpthread.so.0+0x10d10)
> #5 0x00007f2f2adc2267 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x35267)
> #6 0x00007f2f2adc3eca abort (/lib/x86_64-linux-gnu/libc.so.6+0x36eca)
> #7 0x000000000195f6c0 LLVMInstallFatalErrorHandler
> lib/Support/ErrorHandling.cpp:133:0
> #8 0x0000000000c08966 llvm::X86II::getSizeOfImm(unsigned long)
> lib/Target/X86/MCTargetDesc/X86BaseInfo.h:577:29
> #9 0x0000000000c04c2a (anonymous namespace)::X86MCCodeEmitter::encodeInstruction(llvm::MCInst
> const&, llvm::raw_ostream&, llvm::SmallVectorImpl<llvm::MCFixup>&,
> llvm::MCSubtargetInfo const&) const lib/Target/X86/MCTargetDesc/
> X86MCCodeEmitter.cpp:1512:67
> #10 0x00000000015884b3 llvm::MCELFStreamer::EmitInstToData(llvm::MCInst
> const&, llvm::MCSubtargetInfo const&) lib/MC/MCELFStreamer.cpp:478:26
> #11 0x00000000015aadc0 llvm::MCObjectStreamer::EmitInstruction(llvm::MCInst
> const&, llvm::MCSubtargetInfo const&) lib/MC/MCObjectStreamer.cpp:245:5
> #12 0x00000000007a036b llvm::X86AsmPrinter::EmitAndCountInstruction(llvm::MCInst&)
> lib/Target/X86/X86MCInstLower.cpp:106:3
> #13 0x00000000007a32dc llvm::X86AsmPrinter::EmitInstruction(llvm::MachineInstr
> const*) lib/Target/X86/X86MCInstLower.cpp:1849:1
> #14 0x0000000000dde226 llvm::AsmPrinter::EmitFunctionBody()
> lib/CodeGen/AsmPrinter/AsmPrinter.cpp:943:11
> #15 0x0000000000796e81 llvm::X86AsmPrinter::runOnMachineFunction(llvm::MachineFunction&)
> lib/Target/X86/X86AsmPrinter.cpp:73:3
> #16 0x000000000104d441 llvm::MachineFunctionPass::runOnFunction(llvm::Function&)
> lib/CodeGen/MachineFunctionPass.cpp:62:8
> #17 0x00000000014766bf llvm::FPPassManager::runOnFunction(llvm::Function&)
> lib/IR/LegacyPassManager.cpp:1513:27
> #18 0x00000000014769d5 llvm::FPPassManager::runOnModule(llvm::Module&)
> lib/IR/LegacyPassManager.cpp:1534:16
> #19 0x000000000147716a (anonymous namespace)::MPPassManager::runOnModule(llvm::Module&)
> lib/IR/LegacyPassManager.cpp:1590:27
> #20 0x0000000001476c96 llvm::legacy::PassManagerImpl::run(llvm::Module&)
> lib/IR/LegacyPassManager.cpp:1693:16
> #21 0x0000000001477681 llvm::legacy::PassManager::run(llvm::Module&)
> lib/IR/LegacyPassManager.cpp:1724:3
> #22 0x000000000076bbde compileModule(char**, llvm::LLVMContext&)
> tools/llc/llc.cpp:530:42
> #23 0x000000000076a0c9 main tools/llc/llc.cpp:285:13
> #24 0x00007f2f2adada40 __libc_start_main (/lib/x86_64-linux-gnu/libc.
> so.6+0x20a40)
> #25 0x0000000000769b99 _start (/bin/llc+0x769b99)
> Stack dump:
> 0. Program arguments: /bin/llc -x86-asm-syntax=intel -debug
> -pim-enabled=true -filetype=obj sum-vec03.ll
> 1. Running pass 'Function Pass Manager' on module 'sum-vec03.ll'.
> 2. Running pass 'X86 Assembly Printer' on function '@foo'
>
>
> what to do now? I am stuck here. Please help.
>
>
>
>
>
>
>> when i used the command: llc -x86-asm-syntax=intel -debug -p-enabled=true
>> -filetype=obj sum-vec03.ll>objpon 2>&1
>> i am getting the following error:
>>
>> ********** COMPUTING STACKMAP LIVENESS: foo **********
>> Unknown immediate size
>> UNREACHABLE executed at /lib/Target/X86/MCTargetDesc/X86BaseInfo.h:574!
>> #0 0x00000000019d9fec llvm::sys::PrintStackTrace(llvm::raw_ostream&)
>> /lib/Support/Unix/Signals.inc:402:11
>> #1 0x00000000019da4d9 PrintStackTraceSignalHandler(void*)
>> /lib/Support/Unix/Signals.inc:466:1
>> #2 0x00000000019d8853 llvm::sys::RunSignalHandlers()
>> /lib/Support/Signals.cpp:0:5
>> #3 0x00000000019da834 SignalHandler(int) /lib/Support/Unix/Signals.inc:
>> 256:1
>> #4 0x00007f6d08f79d10 __restore_rt (/lib/x86_64-linux-gnu/libpthr
>> ead.so.0+0x10d10)
>> #5 0x00007f6d07f27267 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x35267)
>> #6 0x00007f6d07f28eca abort (/lib/x86_64-linux-gnu/libc.so.6+0x36eca)
>> #7 0x000000000195f6c0 LLVMInstallFatalErrorHandler
>> /lib/Support/ErrorHandling.cpp:133:0
>> #8 0x0000000000c08966 llvm::X86II::getSizeOfImm(unsigned long)
>> /lib/Target/X86/MCTargetDesc/X86BaseInfo.h:577:29
>> #9 0x0000000000c04c2a (anonymous namespace)::X86MCCodeEmitter::encodeInstruction(llvm::MCInst
>> const&, llvm::raw_ostream&, llvm::SmallVectorImpl<llvm::MCFixup>&,
>> llvm::MCSubtargetInfo const&) const /lib/Target/X86/MCTargetDesc/X
>> 86MCCodeEmitter.cpp:1512:67
>> #10 0x00000000015884b3 llvm::MCELFStreamer::EmitInstToData(llvm::MCInst
>> const&, llvm::MCSubtargetInfo const&) /lib/MC/MCELFStreamer.cpp:478:26
>> #11 0x00000000015aadc0 llvm::MCObjectStreamer::EmitInstruction(llvm::MCInst
>> const&, llvm::MCSubtargetInfo const&) /lib/MC/MCObjectStreamer.cpp:245:5
>> #12 0x00000000007a036b llvm::X86AsmPrinter::EmitAndCountInstruction(llvm::MCInst&)
>> /lib/Target/X86/X86MCInstLower.cpp:106:3
>> #13 0x00000000007a32dc llvm::X86AsmPrinter::EmitInstruction(llvm::MachineInstr
>> const*) /lib/Target/X86/X86MCInstLower.cpp:1738:1
>> #14 0x0000000000dde226 llvm::AsmPrinter::EmitFunctionBody()
>> /lib/CodeGen/AsmPrinter/AsmPrinter.cpp:943:11
>> #15 0x0000000000796e81 llvm::X86AsmPrinter::runOnMach
>> ineFunction(llvm::MachineFunction&) /lib/Target/X86/X86AsmPrinter.
>> cpp:73:3
>> #16 0x000000000104d441 llvm::MachineFunctionPass::runOnFunction(llvm::Function&)
>> /lib/CodeGen/MachineFunctionPass.cpp:62:8
>> #17 0x00000000014766bf llvm::FPPassManager::runOnFunction(llvm::Function&)
>> /lib/IR/LegacyPassManager.cpp:1513:27
>> #18 0x00000000014769d5 llvm::FPPassManager::runOnModule(llvm::Module&)
>> /lib/IR/LegacyPassManager.cpp:1534:16
>> #19 0x000000000147716a (anonymous namespace)::MPPassManager::runOnModule(llvm::Module&)
>> /lib/IR/LegacyPassManager.cpp:1590:27
>> #20 0x0000000001476c96 llvm::legacy::PassManagerImpl::run(llvm::Module&)
>> /lib/IR/LegacyPassManager.cpp:1693:16
>> #21 0x0000000001477681 llvm::legacy::PassManager::run(llvm::Module&)
>> /lib/IR/LegacyPassManager.cpp:1724:3
>> #22 0x000000000076bbde compileModule(char**, llvm::LLVMContext&)
>> /tools/llc/llc.cpp:530:42
>> #23 0x000000000076a0c9 main /tools/llc/llc.cpp:285:13
>> #24 0x00007f6d07f12a40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so
>> .6+0x20a40)
>> #25 0x0000000000769b99 _start (/bin/llc+0x769b99)
>> Stack dump:
>> 0. Program arguments: /bin/llc -x86-asm-syntax=intel -debug
>> -p-enabled=true -filetype=obj sum-vec03.ll
>> 1. Running pass 'Function Pass Manager' on module 'sum-vec03.ll'.
>> 2. Running pass 'X86 Assembly Printer' on function '@foo'
>>
>>
>> What should I do? Please help.
>>
>>
>>
>>
>>
>> On Thu, Aug 24, 2017 at 1:35 AM, hameeza ahmed <hahmed2305 at gmail.com>
>> wrote:
>>
>>> Hello,
>>>
>>> I have implemented some vector instructions ( greater vector width) in
>>> LLVM x86 backend. The llc is generating correct assembly. however to
>>> execute that on some target machine. i need object file. What changes do i
>>> need to do? do i need to put these new instructions and register info in MC
>>> framework to generate object code from .s assembly file?
>>>
>>>
>>> Please help. I am stuck at this point.
>>>
>>> Thank You
>>> Regards
>>>
>>
>>
>
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