https://bugs.llvm.org/show_bug.cgi?id=39140
Bug ID: 39140
Summary: Improve 'collectDebugValues' algorithm.
Product: new-bugs
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: new bugs
Assignee: unassignedb...@nondot.org
Reporter: international.phan...@gmail.com
CC: apra...@apple.com, dblai...@gmail.com,
f...@flametop.co.uk, greg.bedw...@sony.com,
jeremy.morse.l...@gmail.com, llvm-bugs@lists.llvm.org,
paul.robin...@am.sony.com, v...@apple.com,
wolfgang_p...@playstation.sony.com
During the review of
https://reviews.llvm.org/D50887
there were some discussion on the algorithm used by 'collectDebugValues':
https://reviews.llvm.org/D50887?id=161183#inline-448054
The idea was to use the list of USEs instead of linearily scanning through all
instructions.
https://reviews.llvm.org/D50887?id=161183#inline-448099
It was mentioned to use `MachineInstrIterator::use_instructions(Reg)`, with a
MRI object being available in the contexts where collecting debug values.
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