[LLVMbugs] [Bug 3561] New: Assertion `StackTop > 0 && "Cannot pop empty stack!"' failed.

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=3561

           Summary: Assertion `StackTop > 0 && "Cannot pop empty stack!"'
                    failed.
           Product: new-bugs
           Version: unspecified
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: baldrick at free.fr
                CC: llvmbugs at cs.uiuc.edu


Created an attachment (id=2542)
 --> (http://llvm.org/bugs/attachment.cgi?id=2542)
testcase .ll

This breaks the llvm-gcc build when targeting the i386 cpu.  To reproduce:
$ llc -mcpu=i386 fp_crash.bc
llc: lib/Target/X86/X86FloatingPoint.cpp:553:
void<unnamed>::FPS::popStackAfter(llvm::ilist_iterator<llvm::MachineInstr>&):
Assertion `StackTop > 0 && "Cannot pop empty stack!"' failed.
...


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