[LLVMbugs] [Bug 5534] New: Local register allocator assertion " Silently clearing a virtual register?" failed

bugzilla-daemon at cs.uiuc.edu bugzilla-daemon at cs.uiuc.edu
Tue Nov 17 02:09:03 PST 2009


           Summary: Local register allocator assertion "Silently clearing a
                    virtual register?" failed
           Product: new-bugs
           Version: unspecified
          Platform: PC
        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=3829)
 --> (http://llvm.org/bugs/attachment.cgi?id=3829)
testcase .ll

This is a recent regression.

$ llc regalloc_crash.ll -O0 -regalloc=local
llc: llvm/lib/CodeGen/RegAllocLocal.cpp:859:
void<unnamed>::RALocal::AllocateBasicBlock(llvm::MachineBasicBlock&): Assertion
`(!PhysRegsUsed[PhysReg] || PhysRegsUsed[PhysReg] == -1) && "Silently clearing
a virtual register?"' failed.

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