[llvm-bugs] [Bug 44814] New: Please cherry-pick rG41206b61e30c into the release-10 branch

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=44814

            Bug ID: 44814
           Summary: Please cherry-pick rG41206b61e30c into the release-10
                    branch
           Product: libraries
           Version: 10.0
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Common Code Generator Code
          Assignee: unassignedbugs at nondot.org
          Reporter: jeremy.morse.llvm at gmail.com
                CC: greg.bedwell at sony.com, llvm-bugs at lists.llvm.org,
                    paul.robinson at am.sony.com
            Blocks: 44555

Hi Hans,

Could you please cherry pick rG41206b61e30c into the release-10 branch. This
cleanly cherry-picks and passes check-llvm on amd64 Ubuntu 18. The patch fixes
a performance regression where in certain circumstances, debugging information
could grow quadratically with the size of a basic block. This behaviour was
introduced in llvm 9, it'd be great to fix it for llvm 10.


Referenced Bugs:

https://bugs.llvm.org/show_bug.cgi?id=44555
[Bug 44555] [meta] 10.0.0 Release Blockers
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