[LLVMbugs] [Bug 2602] New: OOM in SCEV with polynomial induction variable

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=2602

           Summary: OOM in SCEV with polynomial induction variable
           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: sharparrow1 at yahoo.com
                CC: nicholas at mxc.ca, llvmbugs at cs.uiuc.edu


Testcase:
int x(int); int a(void) {unsigned q=0,w=0,e=0; do {q+=w;w+=e;e+=1;x(q);} while
(q != 0xFFFFFFFF);}

crashes with OOM in llvm-gcc. The issue is in
SCEVAddRecExpr::getNumIterationsInRange.

I think Nick Lewycky said he would do this on IRC, but I don't want it to get
lost.


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