[LLVMbugs] [Bug 11455] New: Dead store elimination kills non-dead store as part of memcpy

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=11455

             Bug #: 11455
           Summary: Dead store elimination kills non-dead store as part of
                    memcpy
           Product: libraries
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: release blocker
          Priority: P
         Component: Scalar Optimizations
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: joerg at NetBSD.org
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified


Created attachment 7657
  --> http://llvm.org/bugs/attachment.cgi?id=7657
Test case

Changeset 144239 introduced more aggressive DSE. This created a codegen bug
shown in the attached input. With -O2 for AMD64, tf->tf_rdi is no longer
copied.

-- 
Configure bugmail: http://llvm.org/bugs/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.