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: unassignedb...@nondot.org
Reporter: apra...@apple.com
CC: llvm-bugs@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.
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