[LLVMbugs] [Bug 11982] New: llc segfaults when compiling GHC intermediate code for -march=arm

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http://llvm.org/bugs/show_bug.cgi?id=11982

             Bug #: 11982
           Summary: llc segfaults when compiling GHC intermediate code for
                    -march=arm
           Product: tools
           Version: 3.0
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: llc
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: ricardo.wurmus at gmail.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified


Created attachment 8040
  --> http://llvm.org/bugs/attachment.cgi?id=8040
LLVM bytecode generated by GHC 7.4.1

I'm compiling Haskell code with GHC 7.4.1 which uses LLVM as a backend to
produce binaries for ARM. This command is executed:

  llc file.bc -o file.lm_s -march=arm

(The generated LLVM bytecode that is fed to llc is attached.)


This results in a segfault:

0  libLLVM-3.0.so  0x00007fe422be883f                                      
1  libLLVM-3.0.so  0x00007fe422be8e01
2  libpthread.so.0 0x00007fe421d64270
3  libLLVM-3.0.so  0x00007fe422d00e35 llvm::SelectionDAG::getNode(unsigned int,
llvm::DebugLoc, llvm::EVT, llvm::SDValue) + 1765
4  libLLVM-3.0.so  0x00007fe422d15435
5  libLLVM-3.0.so  0x00007fe422d24ae1
llvm::SelectionDAGISel::LowerArguments(llvm::BasicBlock const*) + 2817
6  libLLVM-3.0.so  0x00007fe422d59142
llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&) + 2770
7  libLLVM-3.0.so  0x00007fe422d5a812
llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) + 578
8  libLLVM-3.0.so  0x00007fe4225a4249
llvm::FPPassManager::runOnFunction(llvm::Function&) + 537
9  libLLVM-3.0.so  0x00007fe4225a42f3
llvm::FPPassManager::runOnModule(llvm::Module&) + 51
10 libLLVM-3.0.so  0x00007fe4225a3ecf
llvm::MPPassManager::runOnModule(llvm::Module&) + 463
11 libLLVM-3.0.so  0x00007fe4225a3fe7 llvm::PassManagerImpl::run(llvm::Module&)
+ 119
12 llc             0x000000000040c381 main + 3105
13 libc.so.6       0x00007fe4216cf38d __libc_start_main + 237
14 llc             0x000000000040c791
Stack dump:
0.    Program arguments: llc file.bc -o file.lm_s -march=arm 
1.    Running pass 'Function Pass Manager' on module 'file.bc'.
2.    Running pass 'ARM Instruction Selection' on function '@s1Bi_info'
zsh: segmentation fault  llc file.bc -o file.lm_s -march=arm


This happens for the architectures `arm' and `thumb'. Compiling succeeds with
other targets, such as `x86' or `c'.

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