[LLVMdev] llc assertion failure

[Ryan M. Lefever]

Reid,

I have filed the llc assertion failure as a new bug report.  I attached 
the offending bytecode, and the results of running bugpoint.

Thanks,
Ryan


Reid Spencer wrote:
> On Fri, 2007-04-06 at 14:27 -0500, Ryan M. Lefever wrote:
> 
>>Is a PR a bug report on the bugzilla database? 
> 
> 
> Yes, so named because of the URL translation. I.e. http://llvm.org/PR123
> takes you to bugzilla bug 123. PR == Problem Report.
> 
> 
>> I am also running 
>>bugpoint to see if that yields anything.
> 
> 
> Okay, good. That might turn up something useful. If you suspect its a
> bug, please file the stack trace and reduced test case in a new PR.
> 
> Thanks, Ryan.
> 
> Reid.
> 
>>Reid Spencer wrote:
>>
>>>Hi Ryan,
>>>
>>>On Fri, 2007-04-06 at 13:34 -0500, Ryan M. Lefever wrote:
>>>
>>>
>>>>I am running the following llvm-ld command to produce native code:
>>>>
>>>>llvm-ld -native -o code.exe code.bc   -lm
>>>>
>>>>However, I am getting the following assertion failure in llc.  The 
>>>>bytecode has been processed with opt, it passes opt bytecode 
>>>>verification.  I'm not too familiar with backend code generation.  Does 
>>>>anyone have any insight in to what the problem might be or how to go 
>>>>about debugging it?
>>>
>>>
>>>Okay, a couple things:
>>>
>>>1. Does the llc version match the llvm-gcc or whatever frontend that
>>>   produced "code.bc". This could simply be an IR version issue if 
>>>   you're working on CVS HEAD. If that's not it, then ...
>>>
>>>2. This looks to be an llc problem not llvm-ld. All that is happening
>>>   here is that llvm-ld is exec'ing llc on code.bc. Could you please
>>>   run llc under the debugger and give it code.bc as input. When it
>>>   fails, please get a stack trace and then create a PR for this
>>>   problem.
>>>
>>>Thanks,
>>>
>>>Reid.
>>>
>>>
>>>
>>>>Regards,
>>>>Ryan
>>>>
>>>>llc: 
>>>>/home/lefever/work/llvm-cvs-070325/include/llvm/Support/Casting.h:199: 
>>>>typename llvm::cast_retty<To, From>::ret_type llvm::cast(const Y&) [with 
>>>>X = llvm::ConstantSDNode, Y = llvm::SDOperand]: Assertion `isa<X>(Val) 
>>>>&& "cast<Ty>() argument of incompatible type!"' failed.
>>>>/home/lefever/work/install/bin/llc((anonymous 
>>>>namespace)::PrintStackTrace()+0x1a)[0x88b77e6]
>>>>/home/lefever/work/install/bin/llc((anonymous 
>>>>namespace)::SignalHandler(int)+0x112)[0x88b7aac]
>>>>[0xd5c420]
>>>>/lib/libc.so.6(abort+0x101)[0x4cab64f1]
>>>>/lib/libc.so.6(__assert_fail+0xfd)[0x4caae859]
>>>>/home/lefever/work/install/bin/llc(llvm::cast_retty<llvm::ConstantSDNode, 
>>>>llvm::SDOperand>::ret_type llvm::cast<llvm::ConstantSDNode, 
>>>>llvm::SDOperand>(llvm::SDOperand const&)+0x4c)[0x83f6af6]
>>>>/home/lefever/work/install/bin/llc(llvm::ScheduleDAG::EmitNode(llvm::SDNode*, 
>>>>llvm::DenseMap<llvm::SDNode*, unsigned int, 
>>>>llvm::DenseMapKeyInfo<llvm::SDNode*> >&)+0x8b2)[0x86ab9fc]
>>>>/home/lefever/work/install/bin/llc(llvm::ScheduleDAG::EmitSchedule()+0x283)[0x86abf7d]
>>>>/home/lefever/work/install/bin/llc[0x861cada]
>>>>/home/lefever/work/install/bin/llc(llvm::ScheduleDAG::Run()+0x94)[0x86a9d6c]
>>>>/home/lefever/work/install/bin/llc(llvm::SelectionDAGISel::ScheduleAndEmitDAG(llvm::SelectionDAG&)+0x73)[0x863e64d]
>>>>/home/lefever/work/install/bin/llc[0x84edf05]
>>>>/home/lefever/work/install/bin/llc(llvm::SelectionDAGISel::CodeGenAndEmitDAG(llvm::SelectionDAG&)+0x13b)[0x863e7ab]
>>>>/home/lefever/work/install/bin/llc(llvm::SelectionDAGISel::SelectBasicBlock(llvm::BasicBlock*, 
>>>>llvm::MachineFunction&, llvm::FunctionLoweringInfo&)+0xad)[0x8652ca7]
>>>>/home/lefever/work/install/bin/llc(llvm::SelectionDAGISel::runOnFunction(llvm::Function&)+0x5d2)[0x865449e]
>>>>/home/lefever/work/install/bin/llc[0x851d559]
>>>>/home/lefever/work/install/bin/llc(llvm::FPPassManager::runOnFunction(llvm::Function&)+0x13a)[0x8844a7c]
>>>>/home/lefever/work/install/bin/llc(llvm::FunctionPassManagerImpl::run(llvm::Function&)+0x6e)[0x8844d00]
>>>>/home/lefever/work/install/bin/llc(llvm::FunctionPassManager::run(llvm::Function&)+0x88)[0x8844dc0]
>>>>/home/lefever/work/install/bin/llc(main+0xbe0)[0x83b9cb6]
>>>>/lib/libc.so.6(__libc_start_main+0xdc)[0x4caa24e4]
>>>>/home/lefever/work/install/bin/llc(__gxx_personality_v0+0x171)[0x83b8031]
>>>>llvm-ld:
>>>>make: *** [benchmarks/bc-1.06/src/bc---all.rdi_prim.exe] Error 1
>>>>_______________________________________________
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>>>>http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>>>
>>>
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>>
>>-- 
>>Ryan M. Lefever  [http://www.ews.uiuc.edu/~lefever]
>>_______________________________________________
>>LLVM Developers mailing list
>>LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
>>http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
> 
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-- 
Ryan M. Lefever  [http://www.ews.uiuc.edu/~lefever]