[LLVMdev] LLC fail without gccld optimization on spec2000 int benchmarks

Wed Apr 26 17:50:34 PDT 2006

On Wed, 26 Apr 2006, Jing Yu wrote:
> In my experiments, I need to disable several linking optimizations. However,
> bzip2, vortex and eon failed if "-disable-opt" was passed to gccld. I tried
> the out-of-box llvm and the building process provided by llvm-test. The same
> problem was observed, when I specified EXTRA_LINKTIME_OPT_FLAGS =
> -disable-opt on Makefile.program and simplied typed "make" under
> llvm-test/External/SPEC/CINT2000. Seems that these errors come from llc
> backend. But I have to stick to x86 backend because otherwise I can not
> control the optimization passes that gcc will put on the generated c code.
>
> I am wondering if this problem is a llc bug or some implicit rules. I really
> appreciate if it is solved.

This looks like an LLVM bug.  The best way for us to figure out what the 
problem is would be for you to follow the instructions on this page:

http://llvm.org/docs/HowToSubmitABug.html

Given that, the fix for the bug is probably straight-forward.

Thanks!

-Chris

> ==============error messages for vortex:=================
> /home/snir/jingyu/resources/llvm/build2/Debug/bin/gccas
> Output/255.vortex.linked.rll -o Output/255.vortex.linked.bc
> /home/snir/jingyu/resources/llvm/build2/Debug/bin/gccld
> -L/home/snir/jingyu/resources/llvm/cfrontend/x86/llvm-gcc/bin/../lib/gcc/i686-pc-linux-gnu/3.4-llvm
> -L/home/snir/jingyu/resources/llvm/cfrontend/x86/llvm-gcc/bin/../lib
> Output/255.vortex.linked.bc
> -disable-opt -lc -lpthread -lltdl -lm  -lcrtend -o Output/255.vortex.llvm
> /home/snir/jingyu/resources/llvm/build2/Debug/bin/llc  -f
> Output/255.vortex.llvm.bc -o Output/255.vortex.llc.s
> llc:
> /home/snir/jingyu/resources/llvm/build2/../llvm2/llvm/lib/Target/X86/X86ISelLowering.cpp:2405:
> virtual llvm::SDOperand
> llvm::X86TargetLowering::LowerOperation(llvm::SDOperand,
> llvm::SelectionDAG&): Assertion `isFP && "Illegal integer SetCC!"'
> failed./home/snir/jingyu/resources/llvm/build2/Debug/bin/llc((anonymous
> namespace)::PrintStackTrace()+0x1a)[0x87a818e]
> /home/snir/jingyu/resources/llvm/build2/Debug/bin/llc((anonymous
> namespace)::SignalHandler(int)+0xe9)[0x87a841d]
> /lib/tls/libc.so.6[0x420277b8]
> /lib/tls/libc.so.6(abort+0x1d5)[0x42028c55]
> /lib/tls/libc.so.6[0x42021043]
> /home/snir/jingyu/resources/llvm/build2/Debug/bin/llc(llvm::X86TargetLowering::LowerOperation(llvm::SDOperand,
> llvm::SelectionDAG&)+0x26c5)[0x83fe515]
> /home/snir/jingyu/resources/llvm/build2/Debug/bin/llc((anonymous
> namespace)::SelectionDAGLegalize::LegalizeOp(llvm::SDOperand)+0xa318)[0x851262c]
> /home/snir/jingyu/resources/llvm/build2/Debug/bin/llc((anonymous
> namespace)::SelectionDAGLegalize::PromoteOp(llvm::SDOperand)+0x3030)[0x851c3cc]
> /home/snir/jingyu/resources/llvm/build2/Debug/bin/llc((anonymous
> namespace)::SelectionDAGLegalize::HandleOp(llvm::SDOperand)+0xa9)[0x85080bf]
> /home/snir/jingyu/resources/llvm/build2/Debug/bin/llc((anonymous
> namespace)::SelectionDAGLegalize::LegalizeDAG()+0x236)[0x8507a4e]
> /home/snir/jingyu/resources/llvm/build2/Debug/bin/llc(llvm::SelectionDAG::Legalize()+0x48)[0x852848c]
> /home/snir/jingyu/resources/llvm/build2/Debug/bin/llc(llvm::SelectionDAGISel::CodeGenAndEmitDAG(llvm::SelectionDAG&)+0x75)[0x854f957]
> /home/snir/jingyu/resources/llvm/build2/Debug/bin/llc(llvm::SelectionDAGISel::SelectBasicBlock(llvm::BasicBlock*,
> llvm::MachineFunction&, llvm::FunctionLoweringInfo&)+0xd8)[0x854fb1e]
> /home/snir/jingyu/resources/llvm/build2/Debug/bin/llc(llvm::SelectionDAGISel::runOnFunction(llvm::Function&)+0x2cd)[0x854e111]
> /home/snir/jingyu/resources/llvm/build2/Debug/bin/llc((anonymous
> namespace)::X86DAGToDAGISel::runOnFunction(llvm::Function&)+0x25)[0x84ea18b]
> /home/snir/jingyu/resources/llvm/build2/Debug/bin/llc(llvm::FunctionPassManagerT::runPass(llvm::FunctionPass*,
> llvm::Function*)+0x1f)[0x86e004b]
> /home/snir/jingyu/resources/llvm/build2/Debug/bin/llc(llvm::PassManagerT<llvm::FTraits>::runPasses(llvm::Function*,
> std::map<llvm::Pass*, std::vector<llvm::Pass*, std::allocator<llvm::Pass*>
>> , std::less<llvm::Pass*>, std::allocator<std::pair<llvm::Pass*
> const, std::vector<llvm::Pass*, std::allocator<llvm::Pass*> > > >
>> &)+0x13e)[0x86de7e0]
> /home/snir/jingyu/resources/llvm/build2/Debug/bin/llc(llvm::PassManagerT<llvm::FTraits>::runOnUnit(llvm::Function*)+0x17b)[0x86de667]
> /home/snir/jingyu/resources/llvm/build2/Debug/bin/llc(llvm::FunctionPassManagerT::runOnFunction(llvm::Function&)+0x25)[0x86e00e9]
> /home/snir/jingyu/resources/llvm/build2/Debug/bin/llc(llvm::FunctionPass::runOnModule(llvm::Module&)+0xa5)[0x867420f]
> /home/snir/jingyu/resources/llvm/build2/Debug/bin/llc(llvm::ModulePassManager::runPass(llvm::ModulePass*,
> llvm::Module*)+0x1f)[0x86e1c11]
> /home/snir/jingyu/resources/llvm/build2/Debug/bin/llc(llvm::PassManagerT<llvm::MTraits>::runPasses(llvm::Module*,
> std::map<llvm::Pass*, std::vector<llvm::Pass*, std::allocator<llvm::Pass*>
>> , std::less<llvm::Pass*>, std::allocator<std::pair<llvm::Pass* const,
> std::vector<llvm::Pass*, std::allocator<llvm::Pass*> > > >
>> &)+0x13e)[0x86e0a4e]/home/snir/jingyu/resources/llvm/build2/Debug/bin/llc(llvm::PassManagerT<llvm::MTraits>::runOnUnit(llvm::Module*)+0x17b)[0x86e08d5]
> /home/snir/jingyu/resources/llvm/build2/Debug/bin/llc(llvm::ModulePassManager::runOnModule(llvm::Module&)+0x25)[0x867329d]
> /home/snir/jingyu/resources/llvm/build2/Debug/bin/llc(llvm::PassManager::run(llvm::Module&)+0x23)[0x867362d]
> /home/snir/jingyu/resources/llvm/build2/Debug/bin/llc(main+0xd67)[0x83c589b]
> /lib/tls/libc.so.6(__libc_start_main+0xe4)[0x42015704]
> /home/snir/jingyu/resources/llvm/build2/Debug/bin/llc(dlopen+0x45)[0x83c49a1]
> make[1]: *** [Output/255.vortex.llc.s] Aborted (core dumped)
>
>
> ==========error messages for bzip2:===========
> ...
> gcc  Output/256.bzip2.llc.s  -lm    -lm  -o Output/256.bzip2.llc
> /home/snir/jingyu/resources/llvm/llvm2/llvm/projects/llvm-test/External/SPEC/Sandbox.sh
> llc-train Output/256.bzip2.out-llc
> /home/snir/jingyu/resources/llvm/build2/projects/llvm-test/External/speccpu2000/benchspec/CINT2000/256.bzip2/data/train/input/
> \
>
> /home/snir/jingyu/resources/llvm/llvm2/llvm/projects/llvm-test/RunSafely.sh
> 500 /dev/null input.compressed.out \
>                  ../256.bzip2.llc `cat
> /home/snir/jingyu/resources/llvm/build2/projects/llvm-test/External/speccpu2000/benchspec/CINT2000/256.bzip2/data/train/input/control`
> Running:
> /home/snir/jingyu/resources/llvm/llvm2/llvm/projects/llvm-test/RunSafely.sh
> 500 /dev/null input.compressed.out ../256.bzip2.llc input.compressed 8
> (cd Output/llc-train; cat input.compressed.out) > Output/256.bzip2.out-llc
> cp Output/llc-train/input.compressed.out.time Output/256.bzip2.out-llc.time
> /home/snir/jingyu/resources/llvm/llvm2/llvm/projects/llvm-test/DiffOutput.sh
> "/home/snir/jingyu/resources/llvm/build2/Debug/bin/fpcmp " llc 256.bzip2
> /home/snir/jingyu/resources/llvm/build2/Debug/bin/fpcmp: Comparison failed,
> not a numeric difference.
> ******************** TEST (llc) '256.bzip2' FAILED! ********************
> Execution Context Diff:
> ******************** TEST (llc) '256.bzip2' ****************************
>
>
>
> ========error messages for eon============
> ...
> Running:
> /home/snir/jingyu/resources/llvm/llvm2/llvm/projects/llvm-test/RunSafely.sh
> 500 /dev/null cook_log.out
> /home/snir/jingyu/resources/llvm/build2/Debug/bin/lli
> -force-interpreter=false ../252.eon.llvm.bc chair.control.cook chair.camera
> chair.surfaces chair.cook.ppm ppm pixels_out.cook
> Core was generated by `/home/snir/jingyu/resources/llvm/build2/Debug/bin/lli
> -force-interpreter=false'.
> Program terminated with signal 11, Segmentation fault.
> #0  0x4055c292 in ?? ()
> #0  0x4055c292 in ?? ()
> #1  0x405500c8 in ?? ()
> #2  0x0846fb12 in llvm::ExecutionEngine::runFunctionAsMain(llvm::Function*,
> std::vector<std::string, std::allocator<std::string> > const&, char const*
> const*)
>    (this=0x8e00ae0, Fn=0x8a0c378, argv=@0x890fe5c, envp=0xbfffe35c)
>    at
> /home/snir/jingyu/resources/llvm/build2/../llvm2/llvm/lib/ExecutionEngine/ExecutionEngine.cpp:154
> #3  0x083ba550 in main (argc=9, argv=0xbfffe334, envp=0xbfffe35c)
>    at
> /home/snir/jingyu/resources/llvm/build2/../llvm2/llvm/tools/lli/lli.cpp:105
> #4  0x42015704 in __libc_start_main () from /lib/tls/libc.so.6
> (cd Output/jit-train; cat pixels_out.cook pixels_out.kajiya
> pixels_out.rushmeier) > Output/252.eon.out-jit
> cat: pixels_out.cook: No such file or directory
> cat: pixels_out.kajiya: No such file or directory
> cat: pixels_out.rushmeier: No such file or directory
> make[1]: [Output/252.eon.out-jit] Error 1 (ignored)
> cp Output/jit-train/cook_log.out.time Output/252.eon.out-jit.time
> /home/snir/jingyu/resources/llvm/llvm2/llvm/projects/llvm-test/DiffOutput.sh
> "/home/snir/jingyu/resources/llvm/build2/Debug/bin/fpcmp  -a 0.005" jit
> 252.eon
> ******************** TEST (jit) '252.eon' FAILED! ********************
> Execution Context Diff:
> ******************** TEST (jit) '252.eon' ****************************
> make[1]: Leaving directory
> `/home/snir/jingyu/resources/llvm/build2/projects/llvm-test/External/SPEC/CINT2000/252.eon'
>

-Chris

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