https://bugs.llvm.org/show_bug.cgi?id=46848
Bug ID: 46848
Summary: Cleanup: Don't emit DBG_VALUEs after copies in
SelectionDAG
Product: libraries
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: enhancement
Priority: P
Component: DebugInfo
Assignee: unassignedb...@nondot.org
Reporter: tbosch1...@gmail.com
CC: jdevliegh...@apple.com, keith.wal...@arm.com,
llvm-bugs@lists.llvm.org,
paul_robin...@playstation.sony.com
Currently, SelectionDAG emits DBG_VALUEs after every copy for a parameter.
However, it should be the job of LiveDebugValues::transferRegisterCopy to track
when a copy introduces a backup location for a variable, /not/ the job of the
instruction selector.
For more details, see https://bugs.llvm.org/show_bug.cgi?id=39715#c34 and
following comments.
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