[LLVMbugs] [Bug 5036] New: llc crashes on Windows due to NULL X86AsmPrinter::MMI

bugzilla-daemon at cs.uiuc.edu bugzilla-daemon at cs.uiuc.edu
Wed Sep 23 13:41:47 PDT 2009


           Summary: llc crashes on Windows due to NULL X86AsmPrinter::MMI
           Product: tools
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: llc
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: ofv at wanadoo.es
                CC: llvmbugs at cs.uiuc.edu

Crashes on mingw and VC for every .bc file I tried, but not on Linux.

This is the stack trace:

 Line 167 + 0x3 bytes C++
& MF={...})  Line 145 + 0xb bytes       C++
        llc.exe!llvm::MachineFunctionPass::runOnFunction(llvm::Function &
F={...})  Line 31 + 0x13 bytes        C++
        llc.exe!llvm::FPPassManager::runOnFunction(llvm::Function & F={...}) 
Line 1380 + 0x17 bytes    C++
        llc.exe!llvm::FunctionPassManagerImpl::run(llvm::Function & F={...}) 
Line 1332 + 0x1b bytes    C++
        llc.exe!llvm::FunctionPassManager::run(llvm::Function & F={...})  Line
1262 + 0xf bytes C++
        llc.exe!main(int argc=3, char * * argv=0x001c4648)  Line 393    C++

The problem is in X86AsmPrinter::runOnMachineFunction:

  if (Subtarget->isTargetCOFF()) {
    X86COFFMachineModuleInfo &COFFMMI = 


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