[llvm-bugs] [Bug 44882] New: Please cherry-pick two debuginfo reverts into the release-10 branch

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=44882

            Bug ID: 44882
           Summary: Please cherry-pick two debuginfo reverts 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: llvm-bugs at lists.llvm.org
        Depends on: 44814
            Blocks: 44555

Hi Hans,

Could you please cherry pick these two commits into the release-10 branch:

  rGece761427f63de96ee52bbd6be1c61b07967a917
  rG6531a78ac4b5b229bce272706593a0bc873877d7

They're reverts of the work in https://reviews.llvm.org/D68945 that turned out
to be half baked, and breaks debug information for -fsanitize=safe-stack, as
reported in bug 44585. Crucially, incorrect locations under safestack are being
generated even at -O0, which is a fairly bad failure.

For a clean merge, these commits depend on the cherry pick in bug 44814. This
is due to a spurious test conflict; I can separate the two if needs be.

Thanks for all the release engineering!


Referenced Bugs:

https://bugs.llvm.org/show_bug.cgi?id=44555
[Bug 44555] [meta] 10.0.0 Release Blockers
https://bugs.llvm.org/show_bug.cgi?id=44814
[Bug 44814] Please cherry-pick rG41206b61e30c into the release-10 branch
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