[LLVMbugs] [Bug 15982] New: GVN crashes

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Mon May 13 11:16:07 PDT 2013


            Bug ID: 15982
           Summary: GVN crashes
           Product: tools
           Version: 3.2
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: opt
          Assignee: unassignedbugs at nondot.org
          Reporter: fwinter at jlab.org
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Created attachment 10505
  --> http://llvm.org/bugs/attachment.cgi?id=10505&action=edit
IR that crashes GVN (LLVM 3.2)

The attached IR (gvn_crash.ll) crashes GVN. The instructions at label %L3 seem
to be too much for it, since when simplifying them (1 basic block level less)
the pass succeeds.

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