[llvm-bugs] [Bug 31310] New: SROA fails to propagate debug location annotation

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=31310

            Bug ID: 31310
           Summary: SROA fails to propagate debug location annotation
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Scalar Optimizations
          Assignee: unassignedbugs at nondot.org
          Reporter: anemet at apple.com
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

Created attachment 17734
  --> https://llvm.org/bugs/attachment.cgi?id=17734&action=edit
testcase

The testcase s.ll demonstrates the problem.  The phis generated by SROA carry
no debug location MD:

/org/llvm/build$ grep phi s.ll
/org/llvm/build$ ./bin/opt -sroa s.ll -S | grep phi
  %a.addr.0 = phi i32 [ %a, %entry ], [ %0, %for.inc ]
  %i.0 = phi i32 [ 0, %entry ], [ %inc, %for.inc ]

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