[llvm-bugs] [Bug 31012] New: IRMover duplicates global variable !dbg attachments

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=31012

            Bug ID: 31012
           Summary: IRMover duplicates global variable !dbg attachments
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Linker
          Assignee: unassignedbugs at nondot.org
          Reporter: aprantl at apple.com
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

Created attachment 17585
  --> https://llvm.org/bugs/attachment.cgi?id=17585&action=edit
test case with a global variable

To reproduce, copy the attached testcase to test/Linker or just run it through
llvm-link with any other module as a second input.

The global object g

> @g = common global i32 0, align 4, !dbg !0

will first be materialized with a !dbg attachement. Later, IRMover will invoke
linkGlobalValueBody() which calls GlobalObject::copyMetadata() a second time,
thus duplicating the !dbg attachment and creating an object g

> @g = common global i32 0, align 4, !dbg !0, !dbg 0

with a duplicate !dbg attachment.

-- 
You are receiving this mail because:
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-bugs/attachments/20161114/46113aae/attachment.html>