[LLVMbugs] [Bug 1959] New: -dse mysteriously eliminates "free" instructions

bugzilla-daemon at cs.uiuc.edu bugzilla-daemon at cs.uiuc.edu
Tue Jan 29 23:36:45 PST 2008


           Summary: -dse mysteriously eliminates "free" instructions
           Product: libraries
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: Scalar Optimizations
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: nicholas at mxc.ca
                CC: resistor at mac.com, llvmbugs at cs.uiuc.edu

Created an attachment (id=1362)
 --> (http://llvm.org/bugs/attachment.cgi?id=1362)

Attached is a reduced testcase from a failure in
SingleSource/Benchmarks/Shootout/lists. It looks like DSE eliminated the free's
that matched up with the malloc's. This lead to a quick out of memory condition
when running the resulting program.

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