[LLVMbugs] [Bug 15882] New: opt -loop-vectorize breaks this function

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=15882

            Bug ID: 15882
           Summary: opt -loop-vectorize breaks this function
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Interprocedural Optimizations
          Assignee: unassignedbugs at nondot.org
          Reporter: rafael.espindola at gmail.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Created attachment 10447
  --> http://llvm.org/bugs/attachment.cgi?id=10447&action=edit
testcase

Producing a .o from this testcase and linking it with the rest of firefox
produces a working binary.

Running opt -loop-vectorize on this single (but large) function produces a
browser that crashes at startup.

Hopefully this is enough for someone familiar with the vectorizer to see what
is going wrong, but if not I can try to put the remaining object files
somewhere (or reduce this further, but probably not this week).

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