[LLVMbugs] [Bug 2401] New: memcpyopt incorrectly removes memcpy

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=2401

           Summary: memcpyopt incorrectly removes memcpy
           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: llvmbugs at cs.uiuc.edu


Created an attachment (id=1694)
 --> (http://llvm.org/bugs/attachment.cgi?id=1694)
Testcase

Testcase attached; exits quietly when run with "lli memtest.bc", but calls
abort() when run with "opt memtest.bc -memcpyopt -o - | lli".

Sorry the testcase is a little big, but I didn't want to break it reducing it,
and bugpoint didn't seem too helpful.  It should be pretty easy to see what's
going on, though, because all the memcpyopt pass does here is remove one
memcpy.


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